OFFICE LEASE




                                     between




                              OAIC Bush Street, LLC
                      a Delaware limited liability company



                                   as Landlord




                                       and



                                 Xoom.com, Inc.,
                             A Delaware corporation




                                    as Tenant



THE SUBMISSION OF THIS DOCUMENT FOR EXAMINATION, NEGOTIATION AND/OR SIGNATURE
DOES NOT CONSTITUTE AN OFFER TO LEASE. THIS DOCUMENT SHALL NOT BE BINDING AND IN
EFFECT AGAINST EITHER PARTY UNTIL AT LEAST ONE COUNTERPART, DULY EXECUTED BY
LANDLORD AND TENANT, HAS BEEN RECEIVED BY LANDLORD AND TENANT.


<PAGE>


                                TABLE OF CONTENTS

<TABLE>

                                                                                                               PAGE
<S>                                                                                                            <C>
1.       DEFINITIONS.............................................................................................1
2.       LEASE TERM; CONDITION OF PREMISES.......................................................................1
3.       8TH AND 9TH FLOORS......................................................................................2
4.       RENTAL..................................................................................................3
5.       ADDITIONAL RENT FOR EXPENSES AND REAL ESTATE TAXES......................................................5
6.       USE....................................................................................................10
7.       SERVICES...............................................................................................11
8.       TENANT REMEDIES........................................................................................14
9.       IMPOSITIONS PAYABLE BY TENANT..........................................................................15
10.      ALTERATIONS............................................................................................16
11.      LIENS..................................................................................................18
12.      REPAIRS; CONDITION OF PREMISES.........................................................................19
13.      DESTRUCTION OR DAMAGE..................................................................................19
14.      INSURANCE..............................................................................................21
15.      WAIVER OF SUBROGATION..................................................................................23
16.      INDEMNIFICATION........................................................................................24
17.      COMPLIANCE WITH LEGAL REQUIREMENTS.....................................................................24
18.      ASSIGNMENT AND SUBLETTING..............................................................................25
19.      RULES; NO DISCRIMINATION...............................................................................29
20.      ENTRY BY LANDLORD......................................................................................29
21.      EVENTS OF DEFAULT......................................................................................30
22.      TERMINATION UPON DEFAULT...............................................................................31
23.      CONTINUATION AFTER DEFAULT.............................................................................32
24.      OTHER RELIEF...........................................................................................32
25.      LANDLORD'S RIGHT TO CURE DEFAULTS......................................................................32
26.      LANDLORD DEFAULT.......................................................................................32
27.      ATTORNEYS' FEES........................................................................................33
28.      EMINENT DOMAIN.........................................................................................33
29.      SUBORDINATION AND NONDISTURBANCE.......................................................................33
30.      NO MERGER..............................................................................................34


                                                   -i-
<PAGE>

                                TABLE OF CONTENTS
                                   (CONTINUED)
                                                                                                               PAGE

31.      AMENDMENTS.............................................................................................34
32.      ESTOPPEL CERTIFICATE...................................................................................34
33.      NO LIGHT, AIR, OR VIEW EASEMENT........................................................................34
34.      HOLDING OVER...........................................................................................34
35.      SECURITY DEPOSIT.......................................................................................35
36.      WAIVER.................................................................................................37
37.      NOTICES AND CONSENTS...................................................................................37
38.      COMPLETE AGREEMENT.....................................................................................37
39.      CORPORATE AUTHORITY....................................................................................37
40.      STORAGE SPACE..........................................................................................38
41.      NO CONSEQUENTIAL DAMAGES...............................................................................38
42.      MISCELLANEOUS..........................................................................................38
43.      ABANDONMENT............................................................................................39
44.      AMERICANS WITH DISABILITIES ACT AND SIMILAR ACTS.......................................................39
45.      EXHIBITS...............................................................................................39
46.      LANDLORD'S LIABILITY; SALE OF BUILDING.................................................................39
47.      NAME OF BUILDING AND SIGNAGE...........................................................................40
48.      HAZARDOUS SUBSTANCE DISCLOSURE.........................................................................41
49.      REAL ESTATE BROKERS....................................................................................43
50.      NOTICE TO MORTGAGEE; FINANCIAL STATEMENT...............................................................43
51.      OPTION TO EXTEND.......................................................................................43
52.      RIGHT OF FIRST REFUSAL.................................................................................46
53.      PARKING................................................................................................47
54.      BICYCLE PARKING........................................................................................48
55.      INTERNAL FIRE STAIRS...................................................................................48
56.      DEDICATED ELEVATOR.....................................................................................48
57.      YEAR 2000..............................................................................................48

</TABLE>

                                                 -ii-
<PAGE>


                                  OFFICE LEASE
                             BASIC LEASE INFORMATION

Lease Execution Date:      August 13, 1999


         The Lease Execution Date shall be the date upon which the Lease is
         fully executed by both parties. Upon Lease execution by Landlord,
         Landlord shall promptly send a copy of the fully executed Lease to
         Tenant by facsimile, followed by overnight delivery of a complete,
         fully executed original Lease.


Landlord:         OAIC Bush Street, LLC, a Delaware limited liability company


Tenant:           Xoom.com, Inc., a Delaware corporation


Building (Section 1(a)):  225 Bush Street, San Francisco, California


Premises (Section 1(b)):

         Suite 800 on the entire 8th floor of the Building (the "8th Floor")
         Suite 900 on the entire 9th floor of the Building (the "9th Floor")
         Suite 1200 on the entire 12th floor of the Building (the "12th Floor")
         Suite 1300 on the entire 13th floor of the Building (the "13th Floor")
         Suite 1900 on the entire 19th floor of the Building (the "19th Floor")
         Suite 2000 on the entire 20th floor of the Building (the "20th Floor")
         Suite 2100 on the entire 21st floor of the Building (the "21st Floor")
         Suite 2200 on the entire 22nd floor of the Building (the "22nd Floor")

Rentable Area of Premises (Section 1(b)):

         25,233 rentable square feet on the 8th floor 
         26,042 rentable square feet on the 9th floor 
         26,041 rentable square feet on the 12th floor
         26,034 rentable square feet on the 13th floor 
         24,157 rentable square feet on the 19th floor 
         22,123 rentable square feet on the 20th floor
         18,751 rentable square feet on the 21st floor 
         18,314 rentable square feet on the 22nd floor

         The total rentable square footage for the Premises is 186,695 rentable
square feet.


                                        III
<PAGE>


         The Premises rentable square footage was measured based upon ANSI/BOMA
         Z65.1-1996 standards, except for the 22nd floor which calculation
         excludes the exterior loggia area for the purposes of this Lease.
         Landlord and Tenant have agreed to the Premises rentable square footage
         for all purposes and said square footage will not be revised during the
         entire term of the Lease, including all Extension Periods.

Term Commencement Date (Section 2(a)):

         (1)      The Term Commencement Date for the 19th Floor shall be on or
before September 1, 1999 (the "19th Floor Term Commencement Date").

         (2)      The Term Commencement Date for the 12th Floor and 13th Floor
shall be the earlier of twenty-six (26) weeks after the Lease Execution Date,
plus days attributable to Landlord Delays and Force Majeure Events, or
substantial completion of the Tenant Work and Base Building Work on the 12th and
13th Floor (the "12th and 13th Floor Term Commencement Date"). The estimated
12th and 13th Floor Term Commencement Date is February 4, 2000 (the "Estimated
12th and 13th Floor Term Commencement Date").

         (3)      The Term Commencement Date for the 20th Floor and 21st Floor
shall be the earlier of twenty-six (26) weeks after the Lease Execution Date,
plus days attributable to Landlord Delays and Force Majeure Events, or
substantial completion of the Tenant Work and Base Building Work on the 20th
Floor and 21st Floor (the "20th and 21st Floor Term Commencement Date"). The
estimated 20th and 21st Floor Term Commencement Date is February 4, 2000 (the
"Estimated 20th and 21st Floor Term Commencement Date").

         (4)      The Term Commencement Date for the 22nd Floor shall be the
earlier of fourteen (14) months after the Lease Execution Date, plus days
attributable to Landlord Delays and Force Majeure Events, or upon substantial
completion of the Tenant Work and Base Building Work on the 22nd Floor (the
"22nd Floor Term Commencement Date"). The estimated 22nd Floor Term Commencement
Date is October 15, 2000 (the "Estimated 22nd Floor Term Commencement Date").

         (5)      The Term Commencement Date for the 8th Floor and 9th Floor
shall be as set forth in Section 3 of the Lease.


Term Expiration Date (Section 2(a)): The last day of the month, one hundred
twenty (120) months after the 20th and 21st Floor Term Commencement Date.


                                    IV

<PAGE>

Base Monthly Rental (Section 3(a)):

<TABLE>
<CAPTION>
----------------------------------------------------------------------------------------
 FLOOR OF PREMISES              YEARS(2) 1-5:                     YEARS 6-10
<S>                      <C>                             <C>
----------------------------------------------------------------------------------------
     8th Floor                 $73,596.25/mo.                   $79,904.50/mo.
                          $883,155/an. ($35.00(1))         $958,854/an. ($38.00(1))
----------------------------------------------------------------------------------------
     9th Floor                 $75,955.83/mo.                   $82,466.33/mo.
                          $911,470/an. ($35.00(1))         $989,596/an. ($38.00(1))
----------------------------------------------------------------------------------------
     12th Floor                $80,293.08/mo.                    $84,633.25/mo.
                         $963,517.00/an. ($37.00(1))     $1,015,599.00/an. ($39.00(1))
----------------------------------------------------------------------------------------
     13th Floor                $80,271.50/mo.                   $84,610.50/mo.
                         $963,258.00/an. ($37.00(1))     $1,015,326.00/an. ($39.00(1))
----------------------------------------------------------------------------------------
     19th Floor                $74,484.08/mo.                   $78,510.25/mo.
                         $893,809.00/an. ($37.00(1))       $942,123.00/an. ($39.00(1))
----------------------------------------------------------------------------------------
     20th Floor                $73,743.33/mo.                   $82,961.25/mo.
                         $884,920.00/an. ($40.00(1))       $995,535.00/an. ($45.00(1))
----------------------------------------------------------------------------------------
     21st Floor                $62,503.33/mo.                   $70,316.25/mo.
                         $750,040.00/an. ($40.00(1))       $843,795.00/an. ($45.00(1))
----------------------------------------------------------------------------------------
     22nd Floor                $67,151.33/mo.                   $70,203.67/mo.
                         $805,816.00/an. ($44.00(1))       $842,444.00/an. ($46.00(1))
----------------------------------------------------------------------------------------
       Total:                  $587,998.73/mo.                  $633,606.00/mo.
                             $7,055,985.00/an.                 $7,603,272.00/an.
----------------------------------------------------------------------------------------

</TABLE>

(1)  Per rentable square, per annum.
(2)  Years shall be measured from the 20th and 21st Floor Term Commencement Date


Base Expense Year (Section 1(c)):   2000

Base Tax Year (Section 1(d)):       2000


                                      V
<PAGE>


Tenant's Expense Share (Section 5(a)):      33.62%

Tenant's Expense Share by floor of the Premises shall be

         4.54% for the 8th Floor 
         4.69% for the 9th Floor 
         4.69% for the 12th Floor 
         4.69% for the 13th Floor 
         4.35% for the 19th Floor 
         3.98% for the 20th Floor 
         3.38% for the 21st Floor 
         3.30% for the 22nd Floor

         Landlord and Tenant agree that Tenant's Expense Share is calculated
         based upon the Building containing 555,325 rentable square feet
         ("Building Square Footage").

Tenant's Tax Share (Section 5(a)):  33.62% of the Building

Tenant's Tax Share by floor of the Premises shall be:

         4.54% for the 8th Floor 
         4.69% for the 9th Floor 
         4.69% for the 12th Floor 
         4.69% for the 13th Floor 
         4.35% for the 19th Floor 
         3.98% for the 20th Floor 
         3.38% for the 21st Floor 
         3.30% for the 22nd Floor


         Landlord and Tenant agree that Tenant's Tax Share is calculated based
         upon the Building Square Footage (as defined above).

Security Deposit (Section 35):      Upon full execution of the Lease: a Letter
                                    of Credit in the amount of $4,500,000
                                    subject to reduction and/or return to the
                                    Tenant in accordance with the terms of
                                    Section 35 of this Lease


Tenant's Address
for Notices (Section 37):

Prior to 19th Floor Term Commencement Date:

         Xoom.com, Inc.
         300 Montgomery Street, Suite 300


                                     VI
<PAGE>


         San Francisco, California 94104
         Attn: Director of Operations and Administration
         Phone: (415) 288-2500
         Fax: (415) 288-2580

After the 19th Floor Term Commencement Date:

         Xoom.com, Inc.
         225 Bush Street, Suite ____
         San Francisco, California 94104
         Attn: Director of Operations and Administration
         Phone: (415)_________________________
         Fax: (415)___________________________
         [blanks to be completed on occupancy]

Landlord's Address
for Notices (Section 37)

         OAIC Bush Street, LLC
         c/o Ocwen Capital Corporation
         1675 Palm Beach Lakes Boulevard
         The Forum, Suite 511
         West Palm Beach, FL  33401
         Attn:    Secretary
         Phone:   (561) 682-8517
         Fax:     (561) 682-8177

         with a copy to:

         OAIC Bush Street, LLC
         c/o Ocwen Capital Corporation
         1675 Palm Beach Lakes Boulevard
         The Forum
         West Palm Beach, FL  33401
         Attn:    Real Estate Asset Management Department
         Phone:   (561) 682-8275
         Fax:     (561) 682-8163


                                       VII
<PAGE>


         with a copy to:

         Jones Lang LaSalle
         225 Bush Street, Suite 770
         San Francisco, California  94104
         Attn:    Property Manager
         Phone:   (415) 835-0225
         Fax:     (415) 835-0222



Exhibit(s) and Addendum (Section 45):

         Exhibit A:  Floor Plan
         Exhibit B:  Rules and Regulations
         Exhibit C:  Work Letter
         Exhibit D:  Commencement Date Memorandum
         Exhibit E:  Tenant Estoppel
         Exhibit F:  Subordination, Attornment and Non-Disturbance Agreement

Real Estate Brokers (Section 49): Mark Rosen of Rosen and Reynolds for Tenant
and Angus Scott and Richard Dougherty of Grubb & Ellis for Landlord.

The provisions of the Lease identified above in parentheses are those provisions
where references to particular Basic Lease Information appear. Each such
reference shall incorporate the applicable Basic Lease Information. In the event
of any conflict between any Basic Lease Information and the Lease, the latter
shall control.

TENANT:                                 LANDLORD:

Xoom.com, Inc.                          OAIC Bush Street, LLC,
a Delaware corporation                  a Delaware limited liability company

By: /s/ Chris Kitze                     By:  /s/ Gregory Breskin
   -----------------------------           ---------------------------------
Name:   Chris Kitze                     Name:    Gregory Breskin
     ---------------------------             -------------------------------
Its:    Chairman                        Its:     Vice President
    ----------------------------            --------------------------------


By: /s/ John Harbottle                  By:     /s/ Christine Reich
   -----------------------------           ---------------------------------
Name:   John Harbottle                  Name:       Christine Reich
     ---------------------------             -------------------------------
Its:    CFO                             Its:        President
    ----------------------------            --------------------------------


                                            VIII
<PAGE>

                                 OFFICE LEASE

         THIS LEASE, dated August 13, 1999, for purposes of reference only, 
is made and entered into by and between OAIC Bush Street, LLC, a Delaware 
limited liability company ("Landlord"), and Xoom.com, Inc., a Delaware 
corporation ("Tenant").

                                  WITNESSETH:

         Landlord hereby leases to Tenant, and Tenant hereby leases from 
Landlord, the premises described in Section 1(b) below for the term and 
subject to the terms, covenants, agreements and conditions hereinafter set 
forth, to each and all of which Landlord and Tenant hereby mutually agree.

         1.       DEFINITIONS.  Unless the context otherwise specifies or 
requires, the following terms shall have the meanings herein specified:

                  (a)      The term "Building" shall mean the building or 
buildings described in the Basic Lease Information, and the parcel or parcels 
of land on which such building or buildings are situated, together with all 
other improvements and other real property located on such parcel or parcels, 
including without limitation the garage, as well as any property interest in 
the area of the streets bounding the parcel described in the Basic Lease 
Information, and all other improvements on or appurtenances to said parcel or 
said streets.

                  (b)      The term "Premises" shall mean the portion of the 
Building located on the floors specified in the Basic Lease Information which 
is shown crosshatched on the floor plan(s) attached to this Lease as EXHIBIT A. 
Landlord and Tenant agree that the Premises consist of the number of square 
feet of rentable area set forth in the Basic Lease Information. All the 
outside walls and windows of the Premises and any space in the Premises used 
for shafts, stacks, pipes, conduits, ducts, electric or other utilities, 
sinks or other Building facilities, and the use thereof and access thereto 
through the Premises for the purposes of operation, maintenance and repairs, 
are reserved to Landlord.

                  (c)      The term "Base Expense Year" shall mean the 
calendar year specified in the Basic Lease Information as the Base Expense 
Year.

                  (d)      The term "Base Tax Year" shall mean the calendar 
year specified in the Basic Lease Information as the Base Tax Year.

         2.       LEASE TERM; CONDITION OF PREMISES.

                  (a)      The Lease term (the "Lease Term") shall commence 
for the respective floors of the Premises on the Term Commencement Dates 
specified in the Basic Lease Information, as modified by the terms of the 
Lease and the Work Letter attached hereto as Exhibit C (the "Work Letter"), 
and unless ended sooner as herein provided, shall expire on the Term 
Expiration Date specified in the Basic Lease Information.

<PAGE>

                  (b)      Tenant and Landlord shall construct or install in 
the Premises the improvements to be constructed or installed pursuant to the 
Work Letter. Landlord shall own all of said initial improvements to be 
constructed or installed pursuant to the Work Letter as of the Term 
Commencement Date for each respective floor in the Premises.

                  (c)      If Landlord for any reason whatsoever cannot 
deliver possession of the Premises to Tenant on the respective Premises 
Delivery Date (as defined in Exhibit C), this Lease shall not be void or 
voidable, no obligation of Tenant shall be affected hereby and Landlord shall 
not be liable to Tenant for any loss or damage resulting therefrom.

         3.       8TH AND 9TH FLOORS.

                  (a)      In connection with the 8th floor (the "8th Floor") 
and 9th floor (the "9th Floor") in the Building, Landlord shall give written 
notice to Tenant upon the current 8th and 9th Floor tenant's vacation of the 
8th and 9th Floors (the "Availability Notice"). In no event shall Landlord 
give Tenant the Availability Notice prior to January 1, 2000. Tenant shall 
have thirty (30) days after Landlord provides the Availability Notice (the 
"Availability Notice Period") to give Landlord written notice that (i) Tenant 
desires to build out the 8th and/or 9th Floors for Tenant's use ("Tenant 
Build Out"), or (ii) Tenant desires to sublet the 8th and/or 9th Floor to a 
third party sublessee and build out the 8th and 9th Floors accordingly 
("Sublessee Build Out"). Tenant shall have the right to pursue a Tenant Build 
Out or a Sublessee Build Out on either the 8th Floor or 9th Floor and is not 
required to elect the same build out for both of said floors. If Tenant fails 
to deliver written notice during the Availability Notice Period, Tenant shall 
be deemed to have elected a "Sublessee Build Out" for both the 8th Floor and 
9th Floor. Each and every provision of this Lease and Exhibit C shall apply 
to a Tenant Build Out or Sublessee Build Out, except as provided to the 
contrary in this Section or in Exhibit C.

                  (b)      In the case of a Tenant Built Out on the 8th Floor 
and/or 9th Floor, as applicable, (i) Tenant shall be entitled to a Tenant 
Improvement Allowance in Section 5 of Exhibit C of Forty Dollars ($40.00) per 
square foot of rentable area for the 8th Floor ($1,009,320) and/or Forty 
Dollars ($40.00) per square foot of rentable area for the 9th Floor 
($1,041,680), (ii) as required in Section 1(a) of Exhibit C, Tenant shall 
deliver an initial draft of the Space Plan for the 8th Floor and/or 9th 
Floor, as applicable, after the end of the Availability Notice Period, 
(iii) the Premises Delivery Date (as defined in Exhibit C), in Section 2(c) 
of Exhibit C, for the 8th Floor and/or 9th Floor, as applicable, shall be on 
or before six (6) weeks after the end of the Availability Notice Period, as 
extended by any Force Majeure Events and/or Landlord Delay, and (iv) the Term 
Commencement Date for the 8th Floor and/or 9th Floor ("8th Floor Term 
Commencement Date" and/or "9th Floor Term Commencement Date" as applicable) 
shall be twelve (12) weeks after the Premises Delivery Date. In addition to 
the definition of Landlord Delay in EXHIBIT C, for purposes of this Section 3, 
every day after January 1, 2000 until the date on which Landlord delivers the 
Availability Notice to Tenant shall be considered a Landlord Delay.

                  (c)      In the case of a Sublessee Build Out on the 
8th Floor and/or 9th Floor, as applicable, (i) Tenant shall be entitled to an 
initial Tenant Improvement Allowance in Section 5 


                                       2

<PAGE>

of Exhibit C of up to and including Five Dollars ($5.00) per square foot of 
rentable area for the 8th Floor ($126,165) and/or up to and including Five 
Dollars ($5.00) per square foot of rentable area for the 9th Floor 
($130,210), (ii) as required in Section 1(a) of Exhibit C, Tenant shall 
deliver an initial draft of the Space Plan for the 8th Floor and/or 9th 
Floor, as applicable, after the end of the Availability Notice Period, 
(iii) the Premises Delivery Date, in Section 2(c) of Exhibit C, for the 
8th Floor and/or 9th Floor, as applicable, shall be the date that Landlord 
receives written notice from the Tenant electing a Sublessee Build Out, but 
in no event later than the expiration of the Availability Notice Period, and 
(iv) the Term Commencement Date for the 8th Floor and/or 9th Floor 
("8th Floor Term Commencement Date" and/or "9th Floor Term Commencement Date" 
as applicable) shall be March 1, 2000, as extended by any Force Majeure 
Events and/or Landlord Delay.

                  (d)      In the event that Tenant elects a Sublessee Build 
Out pursuant to this Section for either the 8th Floor and/or 9th Floor, 
Tenant shall have the option, exercisable upon written notice to Landlord 
("Additional Build Out Notice"), to further build out the 8th Floor and/or 
9th Floor, as applicable for Tenant's use ("Additional Tenant Build Out"). In 
connection therewith, Tenant shall be entitled to a total Tenant Improvement 
Allowance in Section 5 of Exhibit C of Forty Dollars ($40.00) per square foot 
of rentable area for the 8th Floor ($1,009,320) and/or ($40.00) per square 
foot of rentable area for the 9th Floor ($1,041,680), less the amount of the 
Tenant Improvement Allowance expended during the Sublessee Build Out of the 
8th Floor and/or 9th Floor, as applicable. Notwithstanding anything to the 
contrary contained herein, during the last twenty-four (24) months of the 
original Lease Term, Tenant shall not be entitled to an any additional Tenant 
Improvement Allowance from Landlord in connection with an Additional Tenant 
Build Out. In the event that Tenant exercises the option contained in this 
Section 3(d) Tenant shall deliver an initial draft of the Space Plan for the 
tenant improvements to be constructed on the 8th Floor and/or 9th Floor, as 
applicable, as required in Section 1(a) of Exhibit C after the Additional 
Build Out Notice, and (ii) the parties agree that Landlord shall be required 
to complete any remaining Base Building Work (as defined in Exhibit C) at the 
time of the Additional Build Out.

                  (e)      If the Tenant elects the Sublessee Build Out, 
Tenant shall be entitled to a credit against the 8th Floor Base Monthly 
Rental and 9th Floor Base Monthly Rental (collectively, "Rent Credit") in the 
amount of three dollars ($3.00) per rentable square foot per year until the 
earlier of (i) the nineteenth (19th) month after the 8th Floor Term 
Commencement Date and/or the 9th Floor Term Commencement Date, as applicable, 
or (ii) eighteen (18) weeks after the Additional Build Out Notice.

         4.       RENTAL.

                  (a)      Commencing on the respective Rent Commencement 
Dates, as defined below, with respect to each floor of the Premises and 
thereafter through the remainder of the Lease Term, Tenant shall pay to 
Landlord throughout the Lease Term as basic monthly rental for the Premises 
the sum specified for each floor of the Premises in the Basic Lease 
Information as the Base Monthly Rental. As additional rent hereunder during 
such period, Tenant shall pay to Landlord the additional rent described in 
Section 5 below. Base Monthly Rental and additional 


                                       3

<PAGE>

rent payable pursuant to Section 5 shall be collectively referred to herein 
as "monthly rental." As used herein the "Rent Commencement Date" for each 
floor of the Premises shall mean the Term Commencement Date for each 
respective floor of the Premises as set forth in the Basic Lease Information. 
Landlord and Tenant hereby agree to confirm the Rent Commencement Date and 
Term Commencement Date for each floor of the Premises promptly after the Term 
Commencement Date for each floor of the Premises, by executing and delivering 
to each other a Commencement Date Memorandum in conformance with EXHIBIT D 
attached hereto, but failure to do so shall not affect the Rent Commencement 
Date, Term Commencement Date or Lease Term.

                  (b)      Monthly rental shall be paid to Landlord on or 
before the Rent Commencement Date and on or before the first day of each and 
every successive calendar month thereafter during the term hereof. In the 
event the Rent Commencement Date is on a day other than the first day of a 
calendar month or the Lease Term ends on a day other than the last day of a 
calendar month, the monthly rental for the first and last fractional months 
hereof shall be appropriately prorated.

                  (c)      All sums of money due from Tenant hereunder not 
specifically characterized as rental shall constitute additional rent, and if 
any such sum is not paid when due it shall nonetheless be collectible as 
additional rent with the next installment of monthly rental thereafter 
falling due, but nothing contained herein shall be deemed to suspend or delay 
the payment of any sum of money at the time it becomes due and payable 
hereunder, or to limit any other remedy of Landlord.

                  (d)      Tenant hereby acknowledges that late payment by 
Tenant to Landlord of monthly rental will cause Landlord to incur costs not 
contemplated by this Lease, the exact amounts of which will be difficult to 
ascertain. Such costs include, but are not limited to, processing and 
accounting charges, and late charges which may be imposed on Landlord by the 
terms of any encumbrances covering the Building and the Premises. 
Accordingly, if any installment of monthly rental shall not be received by 
Landlord prior to the expiration of any applicable grace period described in 
Section 21(a), Tenant shall pay to Landlord a late charge equal to five 
percent (5%) of such overdue amount; provided that, on not more than two 
(2) occasions in any consecutive twelve (12) month period Tenant may be up to 
five (5) days late in the payment of monthly rental after written notice from 
Landlord; provided further that, if monthly rental is not paid when due three 
(3) times during any Lease Year, then thereafter Tenant shall not be entitled 
to any grace period, and such late charge shall be assessed on any monthly 
rental not paid by 5:00 p.m. on the date due. The parties hereby agree that 
such late charge represents a fair and reasonable estimate of the costs 
Landlord will incur by reason of late payment by Tenant based on the 
circumstances existing as of the date of this Lease. Acceptance of such late 
charge by Landlord shall in no event constitute a waiver of Tenant's default 
with respect to such overdue amount, nor prevent Landlord from exercising any 
of the other rights and remedies granted hereunder.

                  (e)      Any amount due from Tenant, if not paid when first 
due, shall bear interest from the date first due until paid at an annual rate 
of thirteen percent (13%) (but in no event in 


                                       4

<PAGE>

excess of the maximum rate of interest permitted by law), provided that 
interest shall not be payable on late charges incurred by Tenant nor on any 
amounts upon which late charges are paid by Tenant to the extent such 
interest would cause the total interest to be in excess of that legally 
permitted. Payment of interest shall not excuse or cure any default hereunder 
by Tenant.

                  (f)      Subject to the provisions of Section 21(a) below, 
all payments due from Tenant to Landlord shall be paid to Landlord, without 
notice, demand, deduction or offset, in lawful money of the United States of 
America in immediately available funds or by good check as described below 
and unless otherwise instructed, addressed to the Property Manager at the 
address set forth in the Basic Lease Information, or to such other person or 
at such other place as Landlord may from time to time designate by notice to 
Tenant. Payments made by check must be drawn either on a California financial 
institution or on a financial institution that is a member of the federal 
reserve system. Notwithstanding the foregoing, Tenant may make any payments 
due to Landlord by wire transfer and said payments shall be considered 
received by Landlord upon receipt into Landlord's bank account.

         5.       ADDITIONAL RENT FOR EXPENSES AND REAL ESTATE TAXES.

                  (a)      For purposes of this Section 5, the following 
terms shall have the meanings hereinafter set forth:

                           (i)      "Tenant's Tax Share" and "Tenant's 
Expense Share" mean the percentage figures so specified in the Basic Lease 
Information.

                           (ii)     "Tax Year" means each twelve (12) 
consecutive month period commencing January 1st of each year during the Lease 
Term, including, without limitation, any partial year during which the Lease 
may commence; provided that Landlord, upon notice to Tenant, may change the 
Tax Year from time to time to any other twelve (12) consecutive month period 
and, in the event of any such change, Tenant's Tax Share of Real Estate Taxes 
shall be adjusted for the Tax Year involved in any such change.

                           (iii)    "Real Estate Taxes" means all taxes, 
assessments (whether general or special), levies, excises, fees and charges 
of any kind whatsoever, ordinary or extraordinary, unforeseen as well as 
foreseen, assessed, imposed or levied upon or with respect to the Building or 
any part thereof or any personal property of Landlord used in the operation 
thereof, or Landlord's interest in the Building or such personal property. 
Real Estate Taxes shall include, without limitation: all general real 
property taxes and general and special assessments, charges, fees, or 
assessments for transit, housing, police, fire, or other governmental 
services or purported benefits to the Building or the occupants thereof, 
service payments in lieu of taxes, business taxes, and any tax, fee, or 
excise on the act of entering into this Lease or any other lease of space in 
the Building, or on the use or occupancy of the Building or any part thereof, 
or on the rent payable under any lease or in connection with the business of 
renting space in the Building, or any gross receipt taxes or excise taxes 
that are now or hereafter levied or assessed against Landlord by the United 
States of America, the State of California or any political subdivision 
thereof, public corporation, district, or any other political or public 
entity, and shall also include any other tax, fee, charge or other excise, 
however described, that may be levied or assessed as a 


                                       5

<PAGE>

substitute for, or as an addition to, in whole or in part, any other Real 
Estate Taxes, whether or not now customary or in the contemplation of the 
parties on the date of this Lease. Real Estate Taxes shall not include taxes 
assessed solely upon and/or paid by other tenants in the Building, franchise, 
transfer, inheritance or capital stock taxes or income taxes measured by the 
net income of Landlord from all sources unless, due to a change in the method 
of taxation, any of such taxes is levied or assessed against Landlord as a 
substitute for, or as an addition to, in whole or in part, any other tax that 
would otherwise constitute a Real Estate Tax. Real Estate Taxes shall also 
include legal fees, costs, and disbursements incurred in connection with 
proceedings to contest, determine, or reduce Real Estate Taxes.

                           (iv)     "Expense Year" means each twelve (12) 
consecutive month period commencing January 1st of each year during the Lease 
Term, including, without any limitation, any partial year during which the 
Lease may commence; provided that Landlord, upon notice to Tenant, may change 
the Expense Year from time to time to any other twelve (12) consecutive month 
period and, in the event of any such change, Tenant's Expense Share of 
Expenses shall be adjusted for the Expense Years involved in any such change.

                           (v)      "Expenses" means the total costs and 
expenses paid or incurred by Landlord in connection with the ownership, 
management, operation, maintenance and repair of the Building, including, 
without limitation: (i) the cost of air conditioning, electricity, steam, 
water, sewer, heating, mechanical, telephone, ventilating, escalator and 
elevator systems and all other services and utilities; (ii) the cost of 
repairs and replacements and all labor and material costs related thereto, 
and the cost of general maintenance, cleaning and service contracts and the 
cost of all supplies, tools and equipment required in connection thereof; 
(iii) the cost of the Building delivery and messenger service; (iv) the cost 
incurred by Landlord for all insurance carried on the Building or in 
connection with the use and/or occupancy thereof and the amount of any 
deductible on uninsured loss (earthquake insurance shall either be included 
in the base year Expenses calculation or, if earthquake insurance is not so 
included in the base year Expenses calculation, and Landlord in the future 
desires to carry earthquake insurance, only that portion of the earthquake 
insurance cost as represents the reasonable increase in the cost of such 
earthquake insurance over an imputed base year cost shall be included as an 
Expense); (v) wages, salaries, payroll taxes and other labor costs and 
employee benefits for employees up to and including the level of Building 
manager; (vi) management fees, which shall not exceed the market range for 
such fees; (vii) fees, charges and other costs of all independent contractors 
engaged by Landlord, including those providing janitorial, window cleaning, 
security, extermination, rubbish removal, planting and other services; 
(viii) accounting and legal expenses and the costs of other professionals and 
consultants; (ix) Landlord's share of any shared expenses under any 
reciprocal easement agreement or similar document; (x) depreciation on 
personal property, including, without limitation, carpeting in public 
corridor and common areas and window coverings provided by Landlord; (xi) the 
rental paid for offices in the Building for the property manager and related 
management and operations personnel; (xii) the cost of any capital 
improvements made to the Building, or capital assets acquired by Landlord, 
after completion of the Building's construction that are (A) a labor-saving 
or energy saving device or to enhance the health and safety of the public 
(including tenants) or to effect other economies in the operation or 
maintenance of the Building to the extent of the actual savings, enhancement 
or effect on other 


                                       6

<PAGE>

economies, or (B) made to the Building after the date of this Lease that are 
required under any governmental law or regulation or insurance carrier that 
was not applicable to the Building at the time that permits for the 
construction thereof were obtained; provided that the total cost of said 
improvements or assets that shall be included in the Expenses calculation 
shall not exceed Three Hundred Thousand Dollars ($300,000) during any Expense 
Year; (C) to the extent that the cost of any such improvement or asset is 
less than One Hundred Thousand Dollars ($100,000.00), provided that the total 
cost of said improvements or assets that shall be included in the Expenses 
calculation shall not exceed Two Hundred Thousand Dollars ($200,000) during 
any Expense Year, or (D) which improvements or assets have a useful life of 
five (5) years or less (and the cost of which is not otherwise included in 
Expenses pursuant to this Section 5(a)(v)), so long as the amortized amount 
under this subsection (D) above that is included in the Expenses calculation 
for any Expense year, when combined with the costs under subsection (C), 
shall not exceed Two Hundred Thousand Dollars ($200,000); the costs pursuant 
to this subsection 5(a)(v)(xii) (other than those described in clause (C) 
above) are to be amortized over such period as Landlord shall determine 
(including, without limitation, with respect to any improvements which result 
in cost savings with respect to the Building, such period as would allow 
Landlord to amortize the improvements to the extent of such cost savings in 
any year or to any greater extent deemed appropriate to Landlord, together 
with interest on the unamortized balance at the rate of ten percent (10%) per 
annum or such higher rate as may have been paid by Landlord on funds borrower 
for the purpose of constructing such capital improvements (GAAP shall be used 
to determine if an item is an expense or a capital expenditure); (xiii) the 
amortized cost of the Transit Impact Development Fee of the City and County 
of San Francisco; (xiv) the cost of contesting the validity or applicability 
of any governmental enactments which may affect operating expenses; (xv) 
license, permit and inspection fees and charges; (xvi) sales, use and excise 
taxes on goods and services purchased by Landlord in connection with the 
operation, maintenance or repair of the Building and building systems and 
equipment; (xvii) supplies, tools, materials and equipment used in connection 
with the operation, maintenance or repair of the Building; (xviii) painting 
the exterior or the public or common areas of the Building and the cost of 
maintaining the sidewalks, landscaping and other common areas of the 
Building; and (xiv) any other expenses and costs of any kind whatsoever 
incurred in connection with the ownership, management, operation, maintenance 
and repair of the Building. Expenses shall not include Real Estate Taxes, the 
cost of tenant improvements, real estate broker's commissions, or interest or 
principal payments on loans which are secured by a deed of trust or mortgage 
encumbering the Building.

                  Actual Expenses for both the Base Expense Year and each 
subsequent Expense Year shall be adjusted to equal Landlord's reasonable 
estimate of the Expenses had the total area of the Building been occupied for 
each such Expense Year. Landlord and Tenant acknowledge and agree that 
certain costs of the ownership, management, operation maintenance and repair 
of the Building may be allocated exclusively to a single component of the 
Building (for example, and without limitation, to an office area, a retail 
area or a parking facility) and certain of such costs may be allocated among 
such components. The determination of such costs and their allocation shall 
be made by Landlord in Landlord's reasonable discretion. To the extent costs 
and expenses described above relate to both the Building and other property, 
such costs and 


                                       7

<PAGE>

expenses shall, in determining the amount of Expenses, be allocated as 
Landlord may determine to be appropriate.

                  Notwithstanding anything to the contrary in the definition 
of Expenses, Expenses shall not include:

                           (i)      Depreciation (except as provided in 
Section 5(a)(v)(x) above), interest, or amortization on mortgages payments;

                           (ii)     Leasing commissions, attorney's fees and 
other costs and expenses incurred in connection with negotiations or disputes 
with present or prospective tenants or other occupants of the Building;

                           (iii)    Advertising and promotional expenditures 
related to leasing tenant space in the Building;

                           (iv)     Costs incurred with respect to the 
installation of tenant improvements made for new tenants in the Building or 
incurred in renovating or otherwise improving, decorating, painting or 
redecorating space leased by or exclusively available to other tenants or 
other occupants of the Building;

                           (v)      Expenses, costs, and disbursements 
relating to, or arising directly or indirectly from, the testing for or 
analysis, handling, removal, treatment, disposal, remediation, or replacement 
of asbestos or asbestos-containing materials, lead or Hazardous Materials in, 
on, around, beneath, or from the Building;

                           (vi)     To the extent that retail tenants in the 
Building are separately metered or separately billed, the cost of 
electricity, chilled and hot water for heating and cooling air, and 
janitorial service for such retail tenants in their premises and in excess of 
standard water service to retail tenants in the Building;

                           (vii)    Cost for public art (including, without 
limitation, paintings and sculptures); and

                           (viii)   Expenses, to the extent reimbursed by 
third parties; and

                           (ix)     Any sales, mortgage or other brokerage 
commissions in connection with the sale of financing of the Building.

                  (b)      Tenant shall pay to Landlord as additional rent 
one twelfth (1/12) of Tenant's Tax Share of increases in the Real Estate 
Taxes for each Tax Year or portion thereof during the Lease Term after the 
Base Tax Year when compared to Real Estate Taxes for the Base Tax Year (the 
"Tax Increases"), in advance, on or before the first day of each month during 
such Tax Year, in an amount estimated by Landlord in a writing delivered to 
Tenant. Landlord may revise such estimates from time to time and Tenant will 
thereafter make payments on the basis of such revised estimates.


                                       8

<PAGE>

                  (c)      Tenant shall pay to Landlord as additional rent 
one twelfth (1/12) of Tenant's Expense Share of increases in the Expenses for 
each Expense Year or portion thereof during the Lease Term after the Base 
Expense Year when compared to Expenses for the Base Expense Year (the 
"Expense Increases"), in advance, on or before the first day of each month 
during such Expense Year, in an amount estimated by Landlord in a writing 
delivered to Tenant. Landlord may revise such estimates from time to time and 
Tenant will thereafter make payments on the basis of such revised estimates.

                  (d)      With reasonable promptness after the expiration of 
each Expense Year and Tax Year after the Base Expense Year and Base Tax Year, 
including, without limitation, the Expense Year and Tax Year during which 
this Lease terminates, Landlord will furnish Tenant with a statement (herein 
called "Landlord's Expense Statement" and "Landlord's Tax Statement"), 
prepared by Landlord or its accountant, setting forth in reasonable detail 
the Expenses and Real Estate Taxes for each such Expense Year and Tax Year 
and Tenant's Expense Share of the Expense Increases and Tenant's Tax Share of 
the Tax Increases, which statement shall be conclusive and binding upon 
Tenant, subject to Section 5(e). If the total of Tenant's Expense Share of 
the Expense Increases for any such Expense Year as set forth in Landlord's 
Expense Statement exceeds the total estimated payments for Expense Increases 
paid by Tenant for such Expense Year, Tenant shall pay to Landlord (whether 
or not this Lease has terminated) the difference between the total amount of 
estimated payments paid by Tenant with respect to Expense Increases and the 
total of Tenant's Expense Share of the actual Expense Increases within thirty 
(30) days after the receipt of Landlord's Expense Statement. If the total 
amount paid by Tenant for any such Expense Year shall exceed Tenant's Expense 
Share of the actual Expense Increases for such Expense Year, such excess 
shall be credited against the next installment of Expenses Increases due from 
Tenant to Landlord hereunder. If this Lease has terminated and no amounts are 
due or are to become due to Landlord from Tenant hereunder, any excess shall 
be paid to Tenant by check within thirty (30) days after such final 
determination of the actual Expenses. If the total of Tenant's Tax Share of 
the Tax Increases for any Tax Year as set forth in Landlord's Tax Statement 
exceeds the total estimated payments for Tax Increases paid by Tenant for 
such Tax Year, Tenant shall pay to Landlord (whether or not this Lease has 
terminated) the difference between the total amount of estimated payments 
paid by Tenant with respect to Tax Increases and the total of Tenant's Tax 
Share of the actual Tax Increases within thirty (30) days after the receipt 
of Landlord's Tax Statement. If the total amount paid by Tenant for any such 
Tax Year shall exceed Tenant's Tax Share of the actual Tax Increases for such 
Tax Year, such excess shall be credited against the next installment of Tax 
Increases due from Tenant to Landlord hereunder. If this Lease has terminated 
and no amounts are due or are to become due to Landlord from Tenant hereunder, 
any excess shall be paid to Tenant by check within thirty (30) days after 
such final determination of the actual Tax Increases. Notwithstanding 
anything to the contrary contained herein, in the event that the Expenses for 
any subsequent Expense Year are less than Expenses for the Base Expense Year 
or in the event that the Real Estate Taxes for any subsequent Tax Year are 
less than the Real Estate Taxes for the Base Tax Year, Tenant shall not be 
entitled to a credit against any Base Monthly Rental or other sums payable by 
Tenant hereunder or to a payment from Landlord to Tenant with respect 
thereto. Notwithstanding anything to the contrary contained herein, in no 
event shall Tenant pay for Real Estate Taxes or Expenses attributable to the 
period prior to the commencement of the Lease 


                                       9

<PAGE>

Term and following the Term Expiration Date, as the same may be extended 
pursuant to the terms of the Lease.

                  (e)      Tenant shall have the right, during the nine (9) 
month period following delivery of a Landlord's Expense Statement or a 
Landlord's Tax Statement, at Tenant's sole cost, to review in Landlord's 
offices Landlord's records of Expenses or Real Estate Taxes for the subject 
calendar year. Such review shall be carried out only by regular employees of 
Tenant or by a major national accounting firm and not by any other third 
party. No person conducting such an audit shall be compensated on a 
"contingency" or other incentive basis. If, as of the end of the ninth (9th) 
month after delivery to Tenant of a Landlord's Expense Statement or a 
Landlord's Tax Statement, Tenant shall not have delivered to Landlord an 
objection statement (as defined below), then such Landlord's Expense 
Statement or Landlord's Tax Statement shall be final and binding upon 
Landlord and Tenant, and Tenant shall have no further right to object thereto 
or to obtain any further review or accounting thereof, all of which rights 
Tenant expressly waives. If within such nine (9) month period, Tenant 
delivers to Landlord a written statement specifying objections to such 
Landlord Expense Statement or Landlord's Tax Statement (an "objection 
statement"), then Tenant and Landlord shall meet to attempt to resolve such 
objection within ten (10) days after delivery of the objection statement. If 
such objection is not resolved within such ten (10) day period, then either 
party shall have the right to require that the dispute be submitted to 
binding arbitration under the rules of the American Arbitration Association. 
Notwithstanding that any such dispute remains unresolved, Tenant shall be 
obligated to pay when billed Landlord all amounts payable in accordance with 
this Section 5 (including any disputed amount). If such dispute results in an 
agreement or an arbitrator's determination that Tenant is entitled to a 
refund, Landlord shall, at its option, either pay such refund or credit the 
amount thereof to the monthly rental next becoming due from Tenant, or if the 
Lease has terminated, pay Tenant such refund of credit within thirty (30) 
days.

                  (f)      If any of the respective Rent Commencement Dates 
or Term Expiration Date of the term shall occur on a date other than the 
first or last day, respectively, of a Tax Year and/or Expense Year, then 
Tenant's Tax Share of the Tax Increases and/or Tenant's Expense Share of 
Expense Increases for the year in which the Rent Commencement Date or Term 
Expiration Date occurs shall be prorated based on a 365 day year , but shall 
remain subject to adjustment based on receipt of information after the Term 
Expiration Date.

         6.       USE.

                  (a)      The Premises shall be used for general business 
and professional office purposes only and for no other purpose without the 
prior written consent of Landlord, which consent may be granted or denied in 
Landlord's absolute discretion. Tenant shall not do or permit to be done in 
or about the Premises, nor bring or keep or permit to be brought or kept 
therein, anything which is prohibited by or would in any way conflict with 
any law, statute, ordinance or governmental rule or regulation now in force 
or which may hereafter be enacted or promulgated. Tenant shall not do or 
permit anything to be done in or about the Premises which would in any way 
obstruct or interfere with the rights of other tenants of the Building, or 
injure or annoy them, or use or allow the Premises to be used for any 
improper, immoral, unlawful or 


                                       10

<PAGE>

objectionable purposes, nor shall Tenant cause, maintain or permit any 
nuisance or waste in, on or about the Premises.

                  (b)      Tenant shall not cause or permit the storage, use, 
generation, release, or disposal (collectively, "Handling") of any Hazardous 
Materials (as defined below), in, on, or about the Premises or the Building 
by Tenant or any agents, employees, contractors, licensees, subtenants, 
customers, guests or invitees of Tenant (collectively with Tenant, "Tenant 
Parties"), except that Tenant shall be permitted to use normal quantities of 
office supplies or products (such as copier fluids or cleaning supplies) 
customarily used in the conduct of general business office activities 
("Common Office Chemicals"), providing that the Handling of such Common 
Office Chemicals shall comply at all times with all Hazardous Materials Laws 
(as defined below). Notwithstanding anything to the contrary contained 
herein, however, in no event shall Tenant permit any usage of Common Office 
Chemicals in a manner that may cause the Premises or the Building to be 
contaminated by any Hazardous Materials or in violation of any Hazardous 
Materials Laws. Tenant's obligations under this Section shall survive the 
expiration or other termination of this Lease. For purposes of this Section 
"Hazardous Materials" means any explosive, radioactive materials, hazardous 
wastes, or hazardous substances, including without limitation, asbestos and 
asbestos containing materials ("ACMs"), PCBs, CFCs, or substances defined or 
regulated as hazardous substances or hazardous materials in the Comprehensive 
Environmental Response, Compensation and Liability Act of 1980, as amended, 
42 U.S.C. Section 9601-9657; the Hazardous Materials Transportation Act of 
1975, 42 U.S.C. Section 1001-1012; the Resource Conservation and Recovery Act 
of 1976, 42 U.S.C. Section 6901-6987; or any other federal, state or local 
law, ordinance or regulation. "Hazardous Materials Laws" shall mean all 
federal, state, and local laws, ordinances and regulations defining, 
regulating, restricting or otherwise governing the storage, use, generation, 
release or disapproval of Hazardous Materials.

                  (c)      Tenant shall immediately furnish Landlord with any 
(i) notices received from any insurance company or governmental agency or 
inspection bureau regarding any unsafe or unlawful conditions within the 
Premises, and (ii) notices or other communications sent by or on behalf of 
Tenant to any person relating to environmental laws or hazardous substances.

         7.       SERVICES.

                  (a)      Landlord shall maintain the public and common 
areas of the Building, including the lobbies, stairs, internal fire-stairs, 
elevators, corridors and rest rooms (with hot water), windows, mechanical, 
plumbing and electrical equipment, and the roof, external walls, foundations 
and the structure itself in reasonably good order and condition except for 
damage occasioned by the acts of Tenant, its employees, agents, contractors 
or invitees, which damage shall be repaired by Landlord at Tenant's expense. 
Tenant shall, at all times, have access to the Building, the Premises and, 
for those individuals with monthly parking rights, the garage, twenty four 
(24) hours a day, seven (7) days a week during the Lease Term , and the 
utilities and services described in this Section shall be available to Tenant 
twenty four (24) hours a day, seven (7) days a week. Landlord hereby agrees 
that it shall do all of the foregoing in a manner 


                                       11

<PAGE>

consistent with the standards for other comparable first class office 
buildings in the financial district of San Francisco north of Market Street 
("Comparable Buildings").

                  (b)      Landlord shall furnish the Premises with 
(1) electricity for lighting and the operation of customary office machines 
in an amount normally used for ordinary office use, (2) heat to the extent 
reasonably required for the comfortable occupancy by Tenant in its use of the 
Premises during the period from 7 a.m. to 6 p.m. on weekdays (except 
holidays) ("Building Hours"), or such shorter period as may be prescribed by 
any applicable policies or regulations adopted by any utility or governmental 
agency, (3) elevator service, (4) lighting replacement (for building standard 
lights), (5) restroom supplies, (6) window washing with reasonable frequency, 
and (7) lobby attendant services and janitor service during the times and in 
the manner that such services are customarily furnished in comparable 
buildings; provided that, Landlord shall not be required to maintain any HVAC 
system service to the Tenant's server room and Tenant shall be required to 
maintain said service to Tenant's server room. Landlord hereby agrees that it 
shall furnish said services to the Building in a manner consistent with the 
standards for such services provided to other Comparable Buildings.

                  (c)      Landlord may establish reasonable measures to 
conserve energy, including but not limited to, automatic switching off of 
lights after hours, so long as such measures do not unreasonably interfere 
with Tenant's use of the Premises. Except to the extent due to Landlord's or 
Landlord's agents', employees' or contractors' gross negligence or willful 
misconduct, Landlord shall not be in default hereunder or be liable for any 
damages directly or indirectly resulting from, nor shall the rental herein 
reserved be abated, or this Lease terminated, by reason of (i) the 
installation, use or interruption of use of any equipment in connection with 
the furnishing of any of the foregoing services, (ii) failure to furnish or 
delay in furnishing any such services or the making of necessary repairs or 
improvements to the Premises or to the Building, or (iii) the limitation, 
curtailment, rationing or restrictions on use of water, electricity, gas or 
any other utilities serving the Premises or the Building, nor, in any event, 
shall any such matter constitute or be construed as a constructive eviction. 
Tenant hereby waives the provisions of California Civil Code Section 1932(1) 
or any other applicable existing or future law, ordinance or governmental 
regulation permitting the termination of this Lease due to such failure or 
interruption. Landlord shall use reasonable diligent efforts to remedy any 
interruption in the furnishing of such services. In the event any 
governmental authority or public utility promulgates or revises any law, 
ordinance, rule or regulation, or issues mandatory controls or voluntary 
controls relating to the use or conservation of energy, water, gas, light or 
electricity, the reduction of automobile or other emissions, or the provision 
of any other utility or service (collectively "Controls"), or in the event 
Landlord is required or elects to make alterations to the Premises or the 
Building in order to comply with such mandatory or voluntary Controls, 
Landlord may, in its discretion, take any reasonably appropriate action to 
comply with such Controls or make such alterations to the Premises and/or 
Building related thereto. Such compliance and the making of such alterations 
shall not entitle Tenant to any abatement of rent, constitute an eviction of 
Tenant, constructive or otherwise, or impose upon Landlord any liability 
whatsoever, including but not limited to, liability for consequential damages 
or loss of business by Tenant. In carrying out such compliance and 
alterations, Landlord shall use its reasonable efforts to minimize any 
disruptions to Tenant's business in the Premises.


                                       12

<PAGE>

                  (d)      Landlord shall provide twenty-four (24) hour 
security service (either manned or electronic), comparable to other 
Comparable Buildings, three hundred sixty-five (365) days per year. The 
parties acknowledge that safety and security devices, services and programs 
provided by Landlord, if any, while intended to deter crime and ensure 
safety, may not in given instances prevent theft or other criminal acts, or 
ensure safety of persons or property. The risk that any safety or security 
device, service or program may not be effective, or may malfunction, or be 
circumvented by a criminal, is assumed by Tenant with respect to Tenant's 
property and interests, and Tenant shall obtain insurance coverage to the 
extent Tenant desires protection against such criminal actions and other 
losses, as further described in this Lease. Tenant agrees to cooperate in any 
reasonable safety or security program developed by Landlord or required by 
law. Tenant, at Tenant's sole cost and expense, may install a security system 
in the Premises, including an electronic, magnetic card or similar door 
access system, provided that said electric, magnetic card or similar door 
access system complies with all applicable codes, regulations and law and 
provided that Landlord shall have the right to approve any such system. In 
the event that Landlord installs an electronic, magnetic or similar door 
system, Landlord shall use reasonable efforts to inform Tenant about said 
system and discuss and compare said system with any similar system of 
Tenant's; provided that, said information and discussion shall in no way 
increase Landlord's responsibility or obligations with respect to the 
security of the Building or Premises.

                  (e)      Whenever heat-generating equipment or lighting 
other than building standard lights are used in the Premises by Tenant in 
excess of ordinary office use, Landlord shall have the right, after notice to 
Tenant, to install supplementary air conditioning facilities in the Premises 
or otherwise modify the ventilating and air conditioning system serving the 
Premises, and the cost of such facilities and modifications shall be borne by 
Tenant.

                  (f)      Landlord makes no representation to Tenant 
regarding the adequacy or fitness of the heating or ventilation equipment in 
the Building to maintain temperatures that may be required for, or because 
of, any of Tenant's equipment which uses other than the fractional horsepower 
normally required for office equipment, and Landlord shall have no liability 
for loss or damage suffered by Tenant or others in connection therewith. 
Landlord shall provide up to five (5) watts of electrical current per 
rentable square foot, exclusive of lighting and life safety systems (the 
"Electrical Allowance"); provided, however, (i) without Landlord's consent, 
Tenant shall not install, or permit the installation, in the Premises of any 
type of equipment or machines which will increase Tenant's use of electric 
current in excess of that which Landlord is obligated to provide hereunder 
(provided the foregoing shall not preclude the use of personal computers or 
similar office equipment); (ii) if Tenant shall require electric current in 
excess of the Electrical Allowance, Landlord may condition its consent upon 
Tenant's payment of the cost of installing and providing any additional 
facilities required to furnish such excess power to the Premises and upon the 
installation in the Premises of electric current meters to measure the amount 
of electric current consumed, in which latter event Tenant shall pay for the 
cost of such meter(s) and the cost of installation, maintenance and repair 
thereof, as well as for all excess electric current consumed at the rates 
charged by the applicable local public utility, plus a reasonable amount to 
cover the additional expenses incurred by Landlord in keeping account of the 
electric current so consumed; (iii) if Tenant's increased electrical 
requirements materially affect the temperature 


                                       13

<PAGE>

level in the Premises or the Building, Landlord's consent may be conditioned 
upon Tenant's requirement to pay such amounts as will be incurred by Landlord 
to install and operate any machinery or equipment necessary to restore the 
temperature level to that otherwise required to be provided by Landlord, 
including but not limited to the cost of modifications to the air 
conditioning system, if any, in other parts of the Building. Landlord shall 
not, in any way, be liable or responsible to Tenant for any loss or damage or 
expense which Tenant may incur or sustain if, for any reasons beyond 
Landlord's reasonable control, either the quantity or character of electric 
service is changed or is no longer available or suitable for Tenant's 
requirements. Tenant covenants that at all times its use of electric current 
shall never exceed the capacity of the feeders, risers or electrical 
installations of the Building. If submetering of electricity in the Building 
will not be permitted under future laws or regulations, the Base Monthly 
Rental will then be equitably adjusted to include an additional payment to 
Landlord reflecting the cost to Landlord for furnishing electricity to the 
Premises. Any amounts which Tenant is required to pay pursuant to this 
Section shall be payable upon demand by Landlord and shall constitute 
additional rent.

                  (g)      In the event that Landlord, at Tenant's request, 
provides services to Tenant that are not otherwise provided for in this Lease 
(including electrical power or heating at times other than Building Hours or 
in amounts in excess of the Electrical Allowance), Tenant shall pay 
Landlord's reasonable charges for such services upon billing therefor, 
including, without limitation, Landlord's then current administrative fee 
therefor. Currently, the cost for HVAC outside of Business Hours, is 
approximately sixty dollars ($60) per hour, which cost is subject to 
adjustment by Landlord from time to time in Landlord's reasonable discretion. 
Any such request for extra services shall be made not less than twenty-four 
(24) hours in advance.

         8.       TENANT REMEDIES.

                  (a)      Notwithstanding any contrary provision of this 
Lease, in the event that there is a water leak into the Tenant's server room, 
for a reason not caused by the acts of Tenant ("Water Leak"), Tenant shall 
promptly provide written notice of a Water Leak as set forth in Section 8(c) 
below ("Water Leak Notice"). If the Water Leak Notice is delivered to 
Landlord during Building Hours, Landlord shall have four (4) hours to 
commence curing said Water Leak and shall thereafter diligently pursue such 
cure to completion using commercially reasonable efforts, subject to Force 
Majeure Events. If the Water Leak Notice is delivered to Landlord outside of 
Building Hours, Landlord shall have until the next business day, but in no 
event longer than eight (8) hours, to commence curing said Water Leak and 
shall diligently pursue such cure to completion using commercially reasonable 
efforts, subject to Force Majeure Events. In the event that the Landlord 
fails to commence the cure of a Water Leak within the applicable cure 
commencement period as extended by Force Majeure Events, Tenant shall be 
entitled to undertake such commercially reasonable efforts as are reasonably 
necessary to cure the Water Leak. Subject to the rights of other tenants in 
the Building, Tenant shall have the right to enter such portions of the 
Building as may be reasonably required to effectuate any reasonable cure of 
such Water Leak, provided that (i) Tenant shall use all reasonable efforts to 
include the Building manager or Building personnel in connection with the 
entry into any portions of the Building outside of the Premises, and (ii) 
Tenant shall repair any damage caused by any such repair 


                                       14

<PAGE>

activities of Tenant and shall indemnify and hold Landlord harmless from any 
claims, including any related attorneys fees, by other tenants in the 
Building for damage to persons or property resulting from such activities of 
Tenant. Tenant shall be entitled to reimbursement for the sums reasonably 
expended by Tenant to effectuate such cure within thirty (30) days after 
submitting a written invoice of said sums to Landlord. If Landlord fails to 
reimburse Tenant within said thirty (30) days, Tenant shall be entitled to 
offset said sums from its Base Monthly Rental; provided that, if Landlord 
disputes the amount of such claim for reimbursement, Landlord shall give 
Tenant written notice of such dispute prior to the end of such thirty (30) 
day period in which event Landlord and Tenant shall meet and confer on not 
less than two (2) occasions (at a mutually agreeable time and place in 
San Francisco, California) in the ensuing sixty (60) days in an attempt to 
resolve such dispute and Tenant shall not offset said sums until ninety (90) 
days after the date of submission of such written invoice. Notwithstanding 
anything to the contrary contained herein, nothing contained in this 
subsection or elsewhere in this Lease shall be construed in any way to make 
Landlord liable to Tenant in any way for a Water Leak which is caused by 
Force Majeure Events.

                  (b)      Notwithstanding any contrary provision of this 
Lease, in the event that there is a failure in supply of electrical power to 
the Premises or a telecommunications or data interruption in the Premises, 
for a reason not caused by the acts of Tenant ("Communication Failure"), 
Tenant shall promptly provide written notice of a Communication Failure as 
set forth in Section 8(c) below ("Communication Failure Notice"). If the 
Communication Failure Notice is delivered to Landlord during Building Hours, 
Landlord shall have four (4) hours to commence curing said Communication 
Failure and shall thereafter diligently pursue such cure to completion using 
commercially reasonable efforts, subject to Force Majeure Events. If the 
Communication Failure Notice is delivered to Landlord outside of Building 
Hours, Landlord shall have until the next business day, but in no event 
longer than eight (8) hours, to commence curing said Communication Failure 
and shall diligently pursue such cure to completion using commercially 
reasonable efforts, subject to Force Majeure Events. In the event that the 
Landlord fails to commence the cure of a Communication Failure within the 
applicable cure commencement period as extended by Force Majeure Events, 
Tenant shall be entitled to undertake such commercially reasonable efforts as 
are reasonably necessary to cure the Communication Failure. Subject to the 
rights of other tenants in the Building, Tenant shall have the right to enter 
such portions of the Building as may be reasonably required to effectuate any 
reasonable cure of such Communication Failure, provided that (i) Tenant shall 
use all reasonable efforts to include the Building manager or Building 
personnel in connection with the entry into any portions of the Building 
outside of the Premises, and (ii) Tenant shall repair any damage caused by 
any such repair activities of Tenant and shall indemnify and hold Landlord 
harmless from any claims, including any related attorneys fees, by other 
tenants in the Building for damage to persons or property resulting from such 
activities of Tenant. Tenant shall be entitled to reimbursement for the sums 
reasonably expended by Tenant to effectuate such cure within thirty (30) days 
after submitting a written invoice of said sums to Landlord. If Landlord 
fails to reimburse Tenant within said thirty (30) days, Tenant shall be 
entitled to offset said sums from its Base Monthly Rental; provided that, if 
Landlord disputes the amount of such claim for reimbursement, Landlord shall 
give Tenant written notice of such dispute prior to the end of such thirty 
(30) day period in which event Landlord and Tenant shall meet and confer on 
not less than two (2) 


                                       15

<PAGE>

occasions (at a mutually agreeable time and place in San Francisco, 
California) in the ensuing sixty (60) days in an attempt to resolve such 
dispute and Tenant shall not offset said sums until ninety (90) days after 
the date of submission of such written invoice. Notwithstanding anything to 
the contrary contained herein, nothing contained in this subsection or 
elsewhere in this Lease shall be construed in any way to make Landlord liable 
to Tenant in any way for a Communication Failure which is caused by Force 
Majeure Events.

                  (c)      For purposes of Section 8, during Building Hours, 
Tenant shall provide written notice to the Building Manager or Building Chief 
Engineer and outside of Building Hours, Tenant shall provide written notice 
to the Building Manager, Building Chief Engineer or the Building security 
guard in the main lobby.

         9.       IMPOSITIONS PAYABLE BY TENANT.  In addition to the monthly 
rental and other charges to be paid by Tenant hereunder, Tenant shall pay or 
reimburse Landlord for any and all of the following items (hereinafter 
collectively referred to as "Impositions"), whether or not now customary or 
in the contemplation of the parties hereto: taxes (other than local, state 
and federal personal or corporate income or franchise taxes measured by the 
net income of Landlord from all sources), assessments (including, without 
limitation, all assessments for public improvements, services or benefits, 
irrespective of when commenced or completed), excises, levies, business 
taxes, license, permit, inspection and other authorization fees, transit 
development fees, assessments or charges for housing funds, service payments 
in lieu of taxes and any other fees or charges of any kind, which are levied, 
assessed, confirmed or imposed by any public authority, but only to the 
extent the Impositions are: (a) upon, measured by or reasonably attributable 
to the cost or value of Tenant's equipment, furniture, fixtures and other 
personal property located in the Premises, or the cost or value of any 
leasehold improvements made in or to the Premises by or for Tenant, 
regardless of whether title to such improvements (b) upon, with respect to or 
by reason of the development, possession, leasing, operation, management, 
maintenance, alteration, repair, use or occupancy by Tenant of the Premises 
or (c) upon this transaction or any document to which Tenant is a party 
creating or transferring an interest or an estate in the Premises (including 
any sales, excise or gross receipts tax measured by the rental payable 
hereunder). In the event that it shall not be lawful for Tenant to reimburse 
Landlord for the Impositions but it is lawful to increase the monthly rental 
to take into account Landlord's payment of the Impositions, the monthly 
rental payable to Landlord shall be revised to net Landlord the same net 
return without reimbursement of the Impositions as would have been received 
by Landlord with reimbursement of the Impositions.

         10.      ALTERATIONS.

                  (a)      Tenant may make alterations, additions or 
improvements (collectively, "Alterations") to the Premises or install 
fixtures in the Premises after first obtaining Landlord's consent, which 
consent shall not be unreasonably withheld; provided however, that it shall 
be deemed reasonable for Landlord to withhold its consent if: (a) the cost of 
the work will exceed Two Hundred Fifty Thousand Dollars ($250,000) (b) a 
building permit will be required; or (c) if there will be any material 
modifications to any exterior or structural components of the Building or any 
of the Building's operating systems, including, without limitation, heating, 
ventilating, air 


                                       16

<PAGE>

conditioning, plumbing, electrical, and other operating systems. 
Notwithstanding the foregoing, Tenant may make any Alterations which are 
cosmetic (e.g. minor painting, changes of floor coverings or wall coverings, 
installation of artwork or decorations, etc.), without Landlord's consent 
being required, provided such cosmetic alterations do not require a building 
permit and do not effect the exterior of the Building or the structural or 
mechanical components of the Building. Upon Tenant's written request for 
Landlord's consent to certain Alterations pursuant to this Section, Landlord 
shall have thirty (30) days from the date on which Landlord receives all 
information reasonably required by Landlord for Landlord's review of said 
request to provide Tenant with notice of Landlord's consent or withholding of 
consent to Tenant's request (along with a written description of Landlord's 
reason(s) for withholding of consent, if applicable). In the event that 
Landlord elects to and has a right to oversee (or cause to be overseen) 
Tenant's requested Alteration(s), Landlord shall provide Tenant with notice 
of such election within said thirty (30) day period. In connection with 
Tenant's request for Landlord's consent under this Lease, Tenant shall 
pre-pay to Landlord the sum of Two Hundred Fifty Dollars ($250.00) for 
Landlord's review of applicable documents and plans. Tenant also shall 
reimburse Landlord for any third-party costs and expenses incurred or to be 
incurred by Landlord related to such review within ten (10) days of receipt 
of Landlord's statement therefor. Furthermore, in the event Landlord may 
elect to oversee, or cause to be overseen, such Alterations, Landlord shall 
be entitled to receive a fee for such oversight in an amount equal to three 
(3%) of the cost of such alterations, additions or improvements. Landlord's 
review and approval of Tenant's plans and specifications for any work 
performed for or on behalf of Tenant shall not be deemed to be a 
representation by Landlord that such plans and specifications comply with 
applicable insurance requirements, building codes, ordinances, laws or 
regulations including, without limitation, the provisions of the Americans 
With Disabilities Act, 42. U.S.C. 12101 et seq. and any governmental 
regulations with respect thereof (the "ADA") and Title 24 of the California 
Administrative Code ("Title 24"), and other similar federal, state, and local 
laws and regulations or that the Alterations are constructed in accordance 
with such plans and specifications or that such plans and specifications will 
be adequate for Tenant's use. In no event, however, may the Tenant make any 
Alterations or install fixtures which, in Landlord's reasonable judgment, 
might adversely affect the structural components of the Building or Building 
mechanical, utility or life safety systems. At the time such consent is 
requested, Tenant shall furnish to Landlord a description of the proposed 
work, an estimate of the cost thereof and such information as shall 
reasonably be requested by Landlord substantiating Tenant's ability to pay 
for such work. Landlord, at its sole option, may require as a condition to 
the granting of such consent to any work costing in excess of Five Hundred 
Thousand Dollars ($500,000), that Tenant provide to Landlord, at Tenant's 
sole cost and expense, a lien and completion bond in an amount equal to one 
and one-half (1-1/2) times any and all estimated costs of the proposed work, 
to insure Landlord against any liability for mechanics' and materialmen's 
liens and to insure completion of the work. Before commencing any work, 
Tenant shall give Landlord at least twenty (20) days written notice of the 
proposed commencement of such work in order to give Landlord an opportunity 
to prepare, post and record such notice as may be permitted by law to protect 
Landlord's interest in the Premises and the Building from mechanics' and 
materialmen's liens. Within a reasonable period following completion of any 
work for which plans and specifications were required to obtain a building 
permit for such work, Tenant shall furnish to Landlord "as built" plans 
showing the changes made to the Premises.


                                       17

<PAGE>

                  (b)      All Alterations shall be constructed in a good and 
workmanlike manner using building standard materials or other new materials 
of equal or greater. Landlord, to the extent necessary to avoid any 
disruption to the tenants and occupants of the Building, shall have the right 
to designate the reasonable times when any such Alterations may be performed 
(Tenant hereby agrees that it is reasonable for Landlord to require 
Alterations to be performed on nights and weekends) and to otherwise 
designate reasonable rules, regulations, and procedures for the performance 
of work in the Building. Any Alterations to the Premises shall be made by 
Tenant at Tenant's sole cost and expense, and any contractor, subcontractor 
or other person selected by Tenant to make the same shall be selected from 
Landlord's approved bidder list. Tenant's contractor and its subcontractors 
shall employ union labor to the extent necessary to insure, so far as may be 
possible, the progress of the Alterations and the performance of any other 
work or the provision of any services in the Building without interruption on 
account of strikes, work stoppage or similar causes of delay. All work 
performed by Tenant shall comply with the laws, rules, orders, directions, 
regulations and requirements of all governmental entities having jurisdiction 
over such work including, without limitation, any laws, regulations or 
requirements respecting asbestos or ACMs, the ADA and Title 24 and shall 
comply with the rules, orders, directions, regulations and requirements of 
any nationally recognized board of insurance underwriters. All Alterations 
shall immediately become Landlord's property and shall remain on the Premises 
without compensation to Tenant; provided, however, that unless Landlord has 
previously agreed in writing that an Alteration does not have to be removed 
by Tenant at the end of the Lease Term, Tenant shall, prior to the end of the 
Lease Term, at its sole cost and expense, remove the Alterations required to 
be removed by Landlord and repair and restore the Premises to their condition 
at the commencement of the Lease Term. At the time that Tenant requests 
Landlord's consent to an Alteration(s), Tenant may also request and require 
that Landlord determine whether said Alteration(s) must be removed by Tenant 
at the end of the Lease Term. If so requested by Tenant, Landlord shall 
provide notice to Tenant of the Alteration(s) that Tenant is required to 
remove at the end of the Lease Term simultaneous with Landlord's consent to 
said Alteration(s), if Landlord's consent is given. In the event that 
Landlord determines that an Alteration(s) must be removed by Tenant at the 
end of the Lease Term, Tenant shall remove said Alteration(s) at Tenant's 
sole cost and expense and repair and restore the Premises to their condition 
prior to said Alteration.

                  (c)      Tenant may, in a manner consistent with the 
provisions of this Lease, install, maintain, replace, remove or use any 
communications or computer wires, cables, and related devices (collectively, 
the "Lines") at the Building in or serving the Premises, provided: (i) Tenant 
shall obtain Landlord's prior written consent, which consent may be 
conditioned as reasonably required by Landlord, (ii) if Tenant at any time 
uses any equipment that may create an electromagnetic field exceeding the 
normal insulation ratings of ordinary twisted pair riser cable or cause 
radiation higher than normal background radiation, the Lines therefor 
(including riser cables) shall be appropriately insulated to prevent such 
excessive electromagnetic fields or radiation, and (iii) Tenant shall pay all 
costs in connection therewith. Landlord reserves the right to require that 
Tenant remove any Lines which are installed in violation of these provisions. 
Landlord may (but shall not have the obligation to): (i) install new Lines at 
the Property, and (ii) create additional space for Lines at the Property, and 
(iii) adopt reasonable and uniform rules and regulations with respect to 
Lines.


                                       18

<PAGE>

         Notwithstanding anything to the contrary contained in this Lease, 
Landlord reserves the right to require Tenant to remove any or all Lines 
installed by or for Tenant within or serving the Premises upon the Expiration 
Date or earlier termination of this Lease. Tenant shall not, without the 
prior written consent of Landlord in each instance, grant to any third party 
a security interest or lien in or on the Lines, and any such security 
interest or lien granted without Landlord's written consent shall be null and 
void. Except to the extent arising from the gross negligence or intentional 
acts of Landlord, Landlord or Landlord's agents or employees, Landlord shall 
have no liability for damages arising from, and Landlord does not warrant 
that Tenant's use of any Lines will be free from the following (collectively 
"Line Problems"): (i) any eavesdropping or wire-tapping by unauthorized 
parties, or (ii) any failure of any lines to satisfy Tenant's requirements. 
Except to the extent arising from the Landlord's breach of Section 21(b) of 
this Lease, or the gross negligence or intentional acts of Landlord or 
Landlord's agents or employees, Landlord shall have no liability for damages 
arising from, and Landlord does not warrant that Tenant's use of any Lines 
will be free from any shortages, failures, variations, interruptions, 
disconnections, loss or damage caused by the installation, maintenance, 
replacement, use or removal of lines by or for other tenants or occupants at 
the Property. Under no circumstances shall any Line Problems be deemed an 
actual or constructive eviction of Tenant, render Landlord liable to Tenant 
for abatement of Base Monthly Rental, or relieve Tenant from performance of 
Tenant's obligations under this Lease. Landlord in no event shall be liable 
for damages by reason of loss of profits, business interruption or other 
consequential damages arising from any Line Problems.

         11.      LIENS.  Tenant shall pay when due all costs for work 
performed and materials supplied to the Premises. Tenant shall keep Landlord, 
the Premises and the Building free from all liens, stop notices and violation 
notices relating to the work performed, materials furnished or obligations 
incurred by or for Tenant and Tenant shall protect, indemnify, hold harmless 
and defend Landlord, the Premises and the Building of and from any and all 
loss, cost, damage, liability and expense, including attorney's fees and 
costs, arising out of or related to any such liens or notices. During the 
progress of such work, Tenant shall, upon Landlord's request, furnish 
Landlord with sworn contractor's statements and lien waivers covering all 
work theretofore performed. Tenant shall satisfy or otherwise discharge all 
liens, stop notices or other claims or encumbrances within twenty (20) days 
after Tenant obtains knowledge that any such lien, stop notice, claim or 
encumbrance has been filed. If Tenant fails to pay and remove such lien, 
claim or encumbrance within such twenty (20) days, or Tenant fails to 
diligently pursue, discharge or satisfy said lien, stop notice, claim or 
encumbrance, Landlord, at its election, may pay and satisfy the same and in 
such event the sums so paid by Landlord, with interest from the date of 
payment as set forth in Section 3(e) hereof for amounts owed Landlord by 
Tenant, shall be deemed additional rent due and payable by Tenant at once 
without notice or demand. Notwithstanding the foregoing, if Tenant is 
contesting any mechanics lien and provides to Landlord a bond reasonably 
satisfactory to Landlord and sufficient to remove the lien of record under 
California law, Landlord shall have no right to pay such lien after said bond 
has been provided to Landlord.


                                       19

<PAGE>

         12.      REPAIRS; CONDITION OF PREMISES.

                  (a)      Subject to the Work Letter, by entry hereunder, 
Tenant accepts the Premises as being in the condition in which Landlord is 
obligated to deliver the Premises. Subject to the Work Letter, Tenant shall, 
at all times during the term hereof and at Tenant's sole cost and expense, 
keep the Premises in good condition and repair, in compliance with all laws, 
including without limitation, the ADA and Title 24 (as defined hereafter); 
ordinary wear and tear and damage thereto by fire, earthquake, act of God or 
the elements excepted. Tenant hereby waives all rights to make repairs at the 
expense of Landlord or in lieu thereof to vacate the Premises, abate rent or 
terminate this Lease. Subject to the Work Letter, and subject to Landlord's 
rights to require the removal of Alterations, Tenant shall at the end of the 
term hereof surrender to Landlord the Premises and all Alterations thereto in 
the same condition as when received, ordinary wear and tear and damage by 
fire, earthquake, act of God or the elements excepted. Landlord has no 
obligation and has made no promise to alter, remodel, improve, repair, 
decorate or paint the Premises or any part thereof, except as specifically 
herein set forth. No representations respecting the condition of the Premises 
or the Building have been made by Landlord or Landlord's agents to Tenant, 
except as specifically herein set forth.

                  (b)      Subject to the Work Letter, Tenant has examined 
the Premises and is fully informed to Tenant's satisfaction of the physical 
and environmental condition and the utility of the Premises. Tenant 
acknowledges that Landlord, its agents and employees and other persons acting 
on behalf of Landlord have made no representation or warranty of any kind, 
express or implied, with respect to: (i) the physical or environmental 
condition, value, zoning or legal status or the Building; (ii) the fitness of 
the Premises for Tenant's intended use; (iii) the degree of sound transfer 
within the Building; (iv) the absence of electrical or radio interference in 
the Premises or the Building; (v) the condition, capacity or performance of 
electrical or communications systems or facilities; or (vi) the absence of 
objectionable odors, bright lights or other conditions which may affect 
Tenant's use and enjoyment of the Premises or the Building, upon which Tenant 
has relied directly or indirectly for any purpose, except as specifically set 
forth in this Lease.

         13.      DESTRUCTION OR DAMAGE.

                  (a)      In the event the Premises or the portion of the 
Building necessary for Tenant's use and enjoyment of the Premises are damaged 
by fire, earthquake, act of God, the elements or other casualty, Landlord 
shall repair the same (including the Tenant Work in the portion of the 
Premises damaged to the extent of the actual cost of said Tenant Work, but 
not to exceed the Tenant Improvement Allowance plus an additional Five 
Dollars ($5.00) per rentable square foot for the portion of the Premises so 
damaged), subject to the provisions of this Section hereinafter set forth, if 
(i) such repairs can, in Landlord's reasonable opinion, be made within a 
period of twelve (12) months after the date of casualty, (ii) the cost of 
repairing damage for which Landlord is not insured shall be less than five 
percent (5%) of the then full insurable value of the Premises with respect to 
repairing any damage to the Premises, or five percent (5%) of the then full 
insurable value of the Building with respect to repairing any damage to other 
areas of the Building, (iii) the damage or destruction does not occur during 
the last twelve (12) months of 


                                       20

<PAGE>

the Lease Term as the same may be extended under the terms of this Lease 
(said twelve (12) months shall be measured after taking into account any 
extension of the Lease Term under the terms of this Lease), and (iv) 
Landlord's mortgagee does not require that the insurance proceeds payable as 
a result of a casualty be applied to the payment of the mortgage debt. This 
Lease shall remain in full force and effect except that so long as the damage 
or destruction is not caused by the negligence or fault of Tenant, its 
contractors, agents, employees or invitees, an abatement of monthly rental 
shall be allowed Tenant for such part of the Premises as shall be rendered 
unusable by Tenant in the conduct of its business during the time such part 
is so unusable and Tenant does not actually occupy such part.

                  (b)      As soon as is reasonably possible following the
occurrence of any damage, Landlord shall notify Tenant of the estimated time and
cost required for the repair or restoration of the Premises or the portion of
the Building necessary for Tenant's occupancy (including the Tenant Work in the
portion of the Premises damaged to the extent of the actual cost of said Tenant
Work, but not to exceed the Tenant Improvement Allowance plus an additional Five
Dollars ($5.00) per rentable square foot for the portion of the Premises so
damaged). If, in Landlord's reasonable opinion, such repairs cannot be made
within twelve (12) months as set forth in Section 13(a)(i) above, Landlord or
Tenant may elect by written notice to the other within thirty (30) days after
Landlord's notice of estimated time and cost is given (i) in the event of damage
or destruction to two entire floors in the Premises or less, to terminate this
Lease only as to the portion of the Premises damaged or destroyed, effective as
of the date of such damage, or (ii) in the event of damage or destruction to
more than two floors in the Premises, to terminate this Lease effective as of
the date of such damage. If Landlord is not obligated to effect the repair based
upon the circumstances set forth in Sections 13(a)(ii) or 13(a)(iii) above,
Landlord shall have the right to terminate this Lease, by written notice to
Tenant within thirty (30) days after Landlord's notice of time and cost is
given, effective as of the date of such damage or destruction. If neither party
so elects to terminate this Lease, this Lease shall continue in full force and
effect, but the rent shall be partially abated as provided in Section 13(a)
above, and Landlord shall proceed with reasonable promptness to repair such
damage.

                  (c)      A total destruction of the Building shall
automatically terminate this Lease. Tenant hereby waives all statutory rights of
termination, including any such rights under California Civil Code Section 1933.

                  (d)      In no event shall Tenant be entitled to any
compensation or damages from Landlord, specifically including, but not limited
to, any compensation or damages for (i) loss of the use of the whole or any part
of the Premises, (ii) damage to Tenant's personal property in or improvements to
the Premises, or (iii) any inconvenience, annoyance or expense occasioned by
such damage or repair (including moving expenses and the expense of establishing
and maintaining any temporary facilities).

                  (e)      Landlord, in repairing the Premises, shall not be
required to repair any injury or damage to the personal property of Tenant, or
to make any repairs to or replacement of any alterations, additions,
improvements or fixtures installed on the Premises by or for Tenant, except the
Tenant Work to the extent of the actual cost of the Tenant Work, not to exceed
the 


                                  21
<PAGE>


Tenant Improvement Allowance plus an additional Five Dollars ($5.00) per 
rentable square foot for the portion of the Premises so damaged.

         14.      INSURANCE.

                  (a)      Tenant shall, at its sole cost and expense, during
the Lease Term, cause all improvements at any time located in the Premises
(other than Tenant Work to the extent of the actual cost thereof not to exceed
the Tenant Improvement Allowance plus an additional five dollars ($5.00) per
rentable square foot of the Premises) and all equipment and fixtures from time
to time used or intended to be used in connection with the operation and
maintenance of the Premises, to be insured for the mutual benefit of Landlord
and Tenant against loss or damage by fire and against loss or damage by other
risks now or hereafter included in an All-Risk insurance policy, in an amount
equal to the full insurable value thereof. All proceeds from such insurance
shall be used for the repair or replacement of such improvements, equipment and
fixtures.

                  (b)      All coverage shall be written on an occurrence basis
and shall be primary and non-contributory over any insurance the Landlord may
elect to provide on its behalf. Upon the commencement of the Lease Term, and
upon renewal of such insurance coverage, Tenant shall deliver to the Landlord
certified copies of Tenant's insurance policies, or an original certificate of
such insurance from the insurer providing a minimum of thirty (30) days' notice
of cancellation or modification. In the event Tenant shall fail to procure such
insurance or to deliver such policies and certificates, Landlord may, at
Landlord's option and in addition to Landlord's other remedies in the event of a
default by Tenant hereunder, procure the same for the account of Tenant, and the
cost thereof shall be paid to Landlord as additional rent. All policies of
insurance required to be carried by Tenant under this Section 14 shall be in
form reasonably satisfactory to Landlord and, except for workers compensation,
business interruption and property, shall name Landlord, Landlord's mortgagee,
Landlord's managing agent and any other party designated by Landlord as
additional insureds. All policies of insurance required by Landlord under this
Lease shall be issued by responsible insurance companies which are licensed to
do business in the State of California, and shall have a Best's rating of at
least "A-" and a financial rating of not less than "X" and have been approved in
writing by Landlord. The Commercial General Liability policy shall contain
cross-liability endorsements or its equivalent, and shall be for the mutual and
joint benefit and protection of Landlord, Tenant and any other party designated
by Landlord as an additional insured.

         Notwithstanding any other provisions of this Lease, Tenant, at its own
expense, shall also maintain the following insurance coverage:

                           (i)      WORKER'S COMPENSATION AND EMPLOYER'S
LIABILITY. Tenant shall maintain Worker's Compensation insurance sufficient to
comply with all applicable State and/or Federal laws and an Employer's Liability
policy with a limit of not less than One Million Dollars ($1,000,000.00).

                           (ii)     COMMERCIAL GENERAL LIABILITY. Tenant shall
maintain a Commercial General Liability policy applying to the use and occupancy
of the Premises and the Building, and any part of either, and any areas adjacent
thereto, and the business operated by 


                                  22
<PAGE>


Tenant, or by any other occupant of the Premises with limits of liability not 
less than Two Million Dollars ($2,000,000.00) per occurrence and Three 
Million Dollars ($3,000,000.00) general aggregate for Bodily Injury and 
Property Damage and Three Million Dollars ($3,000,000.00) aggregate 
products/completed operations coverage. Such policy shall specifically name 
the Landlord, Landlord's mortgagee and Landlord's managing agent as 
additional insureds. All such insurance shall provide for severability of 
interests; shall provide that an act or omission of one of the named insureds 
shall not reduce or avoid coverage to the other named insureds; and shall 
afford coverage for all claims based on acts, omissions, injury and damage, 
which claims occurred or arose (or the onset of which occurred or arose) in 
whole or in part during the policy period. Tenant's Commercial General 
Liability policy shall not provide for a deductible in excess of Two Hundred 
Thousand Dollars ($200,000) without the prior written approval of Landlord 
which shall not be unreasonably withheld. The amounts of insurance required 
in this Section 14(b)(ii) may be satisfied by purchasing coverage for the 
limits specified or by a combination of underlying and umbrella limits, so 
long as the total amount of insurance is not less than the limits specified.

                           (iii)    BUSINESS INTERRUPTION. Tenant shall also
maintain a policy of (or obtain an endorsement providing) business interruption
insurance insuring Tenant against losses from interruption of its use of the
Premises for any reason with coverage for a period of not less than one (1)
year.

                           (iv)     PROPERTY INSURANCE. Tenant shall, at its
sole cost and expense, during the Lease Term, cause all improvements at any time
located in the Premises (other than the Building standard tenant improvements)
and all equipment and fixtures from time to time used or intended to be used in
connection with the operation and maintenance of the Premises, to be insured for
the mutual benefit of Landlord and Tenant against loss or damage by fire and
against loss or damage by other risks now or hereafter included in an All-Risk
insurance policy, in an amount equal to the full insurable value thereof. All
proceeds from such insurance shall be used for the repair or replacement of such
improvements, equipment and fixtures. Tenant's property policy shall not provide
for a deductible in excess of One Hundred Thousand Dollars ($100,000) without
the prior written approval of Landlord which shall not be unreasonably withheld.

                           (v)      ADDITIONAL INSURANCE. Whenever good business
practice, in Landlord's reasonable judgment, indicates the need for additional
insurance coverage or different types of insurance in connection with the
Premises or Tenant's use and occupancy thereof, Tenant shall, upon request,
obtain such insurance at Tenant's expense and provide Landlord with evidence
thereof.

                  (c)      Before any repairs, alterations, additions,
improvements, or construction are undertaken by or on behalf of Tenant, Tenant
shall carry and maintain at its expense, or Tenant shall require any contractor
performing work in the Premises to carry and maintain, at no expense to
Landlord, in addition to workers' compensation insurance as required by the
jurisdiction in which the Building is located, All Risk Builder's Risk Insurance
in the amount of the replacement cost of any alterations, additions or
improvements (or such other amount 


                                  23
<PAGE>


reasonably required by Landlord) and Commercial General Liability Insurance 
(including, without limitation, Contractor's Liability coverage), written on 
an occurrence basis with a minimum combined single limit of $2,000,000.00 and 
adding the "owners of the Building and its (or their) respective members, 
principals, beneficiaries, partners, officers, directors, employees, managing 
agents, agents (and their respective members and principals) and 
mortgagee(s)" (and any other designees of Landlord as the interest of such 
designees shall appear) as additional insureds.

                  (d)      Tenant shall not do or fail to do anything in, upon
or about the Premises which will: (i) violate the terms of any of Landlord's
insurance policies; (ii) prevent Landlord from obtaining policies of insurance
acceptable to Landlord or any mortgagees; or (iii) result in an increase in the
rate of any insurance on the Premises, the Building, any other property of
Landlord or of others in the Building. In the event of the occurrence of any of
the events set forth in this Section 14(d), Tenant shall pay Landlord, upon
demand, as additional rent, the cost of the amount of any increase in any such
insurance premium, provided that the acceptance by Landlord of such payment
shall not be construed as a waiver of any rights by Landlord in connection with
a default by Tenant under the Lease.

                  (e)      Tenant shall, prior to and throughout the Lease Term,
procure from each of its insurers under all policies of fire, theft, public
liability, commercial general liability and any other insurance policies of
Tenant now or hereafter existing, pertaining in any way to the Premises or the
Building or any operation therein (except workers' compensation), a waiver, as
set forth in Section 15 of this Lease, of all rights of subrogation which the
insurer might otherwise, if at all, have against the Landlord or any officer,
agent or employee of Landlord (including, without limitation, Landlord's
managing agent).

                  (f)      Landlord also shall maintain (i) a Commercial General
Liability policy applying to its use and occupancy of the Building and any areas
adjacent thereto, and the business operated by Landlord, with limits of
liability not less than One Million Dollars ($1,000,000.00) per occurrence and
Two Million Dollars ($2,000,000.00) general aggregate for Bodily Injury and
Property Damage with an umbrella liability policy with a minimum limit of Five
Million Dollars ($5,000,000) per occurrence and in the aggregate (the "Umbrella
Policy"), and (ii) a policy covering loss by fire or other casualty in the form
of an All-Risk policy covering the Building and the Tenant Work, but only the
extent of the actual cost of the Tenant Work, not to exceed the Tenant
Improvement Allowance plus five dollars ($5.00) per rentable square foot of the
Premises, in such amounts and with such coverages as would generally be carried
in Comparable Buildings, provided that Landlord may, but shall not be required
to, carry earthquake insurance.

         15.      WAIVER OF SUBROGATION. Landlord and Tenant shall each have
included in all policies of fire, extended coverage, business interruption and
other insurance respectively obtained by them covering the Premises, the
Building and contents therein, a waiver by the insurer of all right of
subrogation against the other in connection with any loss or damage thereby
insured against. Any additional premium for such waiver shall be paid by the
primary insured party. To the full extent permitted by law, Landlord and Tenant
each waives all rights of 


                                    24
<PAGE>


recovery against the other for, and agrees to release the other from 
liability for, loss or damage to the extent such loss or damage is covered by 
valid and collectible insurance in effect at the time of such loss or damage 
or would be covered by the insurance required to be maintained under this 
Lease by the party seeking recovery.

         16.      INDEMNIFICATION. Tenant hereby waives all claims against
Landlord and any employee or agent of Landlord and the direct or indirect
constituent partners, members, shareholders or other owners thereof and the
officers, directors, managers, agents and employees of all such persons
(collectively the "Landlord Indemnitees") for damage to any property or injury
or death of any person in, upon or about the Premises arising at any time and
from any cause except to the extent caused by reason of gross negligence or
willful act of Landlord, its agents, employees or contractors. Landlord shall
provide Tenant with prompt notice of such claims and Tenant shall defend
Landlord against, hold Landlord and each of the Landlord Indemnitees harmless
from, and reimburse Landlord and each of the Landlord Indemnitees for any and
all claims, liabilities, damages, losses, costs and expenses, including without
limitation, reasonable attorneys' fees and costs arising out of or in any way
connected with (a) injury to or death of any person, and (b) damage to or
destruction of any property, occurring in, on or about the Premises or
attributable to or resulting from the condition, use or occupancy of the
Premises by Tenant or Tenant's failure to perform its obligations under this
Lease, except such as is caused principally by gross negligence or willful
misconduct of Landlord, its contractors or employees. Landlord shall have the
right to approve the attorneys used by Tenant pursuant to this Section, which
approval shall not be unreasonably withheld or delayed; provided that, Landlord
shall have the right to use attorneys selected by Landlord, subject to Tenant's
approval which shall not be unreasonably withheld or delayed, if a conflict
between Landlord and Tenant exists which would make representation of Landlord
by Tenant's attorneys infeasible. Subject to the foregoing provision regarding
the use of a mutually acceptable attorney for a common defense, the foregoing
indemnity obligation of Tenant shall include reasonable attorneys' fees,
investigation costs and all other reasonable costs and expenses incurred by
Landlord or any Landlord Indemnitee from the first notice that injury, death or
damage has occurred or that any claim or demand is to be made or may be made.
The provisions of this Section 16 shall survive the termination of this Lease
with respect to any damage, injury or death occurring prior to such termination.

         17.      COMPLIANCE WITH LEGAL REQUIREMENTS. Tenant, at its sole cost
and expense, shall promptly comply with all laws, statutes, ordinances and
governmental rules, regulations or requirements now in force or which may
hereafter be in force; with the requirements of any board of fire underwriters
or other similar body now or hereafter constituted; with any direction or
occupancy certificate issued pursuant to any law by any public officer or
officers, insofar as any thereof relate to or affect the condition, use or
occupancy of the Premises, including, without limitation, structural, utility
system and life safety system changes necessitated by Tenant's acts and specific
use of the Premises (but not by Tenant's mere occupancy of the Premises) or by
improvements made by or for Tenant.


                                     25
<PAGE>


         18.      ASSIGNMENT AND SUBLETTING.

                  (a)      Subject to the other provisions hereof, Tenant shall
not, without the prior written consent of Landlord, which consent shall not be
unreasonably withheld or delayed by Landlord, transfer or assign this Lease or
any interest herein, sublet the Premises or any part thereof, or permit the use
of the Premises by any party other than Tenant. Subject to the other provisions
hereof, this Lease shall not, nor shall any interest herein, be assignable as to
the interest of Tenant by operation of law without the consent of Landlord,
which consent shall not be unreasonably withheld or delayed. Tenant shall not
hypothecate or encumber this Lease or any interest herein without the prior
written consent of Landlord, which consent may be granted or denied in
Landlord's reasonable discretion. Any of the foregoing acts without such consent
shall be void and shall at the option of Landlord, terminate this Lease.

                  (b)      Notwithstanding any of the provisions of this Section
18, Tenant shall have the right (i) to assign the Premises or sublet the
Premises or any portion thereof to an Affiliate (as defined below) of Tenant,
and (ii) to sublet any portion of the Premises or permit the use or occupancy of
the Premises, either temporarily or long term, but in no event in excess of
10,000 square feet in the aggregate at any one time, to a supplier of services
to Tenant (e.g. data processing, photocopy, messenger, travel, communications,
facilities management, accounting, etc.), Tenant's consultants or Tenant's
contractors (the transfers described in (i) and (ii) above are referred to as
"Permitted Transfers" and the transferees described in (i) and (ii) above are
referred to as "Permitted Transferees"). "Affiliate" shall mean (i)the National
Broadcasting Company ("NBC"), (ii) any corporation in which or with which Tenant
is merged or consolidated in accordance with applicable statutory provisions for
merger or consolidation of corporations, so long as the liabilities of the
corporations participating in such merger or consolidation are assumed by the
corporation surviving such merger or created by such consolidation, (iii) to any
corporation or other entity acquiring this Lease and all or substantially all of
Tenant's assets, or (iv) to any corporation or other entity which purchases all
of the stock of Tenant, provided that Landlord has approved in writing the
financial condition of any such entity described in clauses (i), (ii), (iii) and
(iv) pursuant to Landlord's reasonable discretion, and any such entity has
assumed all obligations of Tenant hereunder pursuant to an assumption agreement
acceptable to Landlord; provided that, Landlord shall be deemed to have approved
the financial condition under (iv) above for NBC and that company resulting from
the merger transaction described in the S-4 Registration document filed July 12,
1999 by Tenant.

         Tenant shall provide written notice to Landlord of any Permitted
Transfers and the full name of any Permitted Transferee using, occupying,
subletting or taking by assignment the Premises. The use of the Premises by each
Permitted Transferee is subject to all the terms and conditions of the Lease. No
subletting or assignment to a Permitted Transferee shall release Tenant of
Tenant's obligations under this Lease or alter the primary liability of Tenant
to pay the rental and to perform all other obligations to be performed by Tenant
hereunder. The acceptance of rental by Landlord from a Permitted Transferee
shall not be deemed to be a waiver by Landlord of any provision hereof and
Landlord has no obligation to accept any rental from a Permitted Transferee. In
the event of default by any Permitted Transferee in the performance of 


                                  26
<PAGE>


any of the terms hereof, Landlord may proceed directly against Tenant without 
the necessity of exhausting remedies against such assignee, sublessee or 
successor.

                  (c)      If Tenant is a publicly held corporation, the public
trading of stock in Tenant shall not be deemed an assignment or transfer within
the meaning of this Section.

                  (d)      Without limiting the other instances in which it may
be reasonable for Landlord to withhold its consent to an assignment or
subletting, Landlord and Tenant acknowledge that it shall be reasonable for
Landlord to withhold or delay its consent in the following instances: 

                           (1) if, at the time consent is requested, or at 
any time prior to the granting of consent, Tenant is in default under this 
Lease or would be in default under this Lease but for the pendency of any 
grace or cure period under Section 21 below;

                           (2)      if the proposed assignee or sublessee is 
a governmental agency;

                           (3)      if, in Landlord's sole and absolute 
discretion, the use of the Premises by the proposed assignee or sublessee 
would not be compatible with the operation and uses of other tenants in the 
Building, would entail any alterations which would lessen the value of the 
leasehold improvements in the Premises, would result in an increased burden 
on the Building, the Premises and systems and structures thereof, would 
likely cause an increase in insurance premiums for insurance policies 
applicable to the Building, would conflict with any so-called "exclusive" or 
percentage lease then in favor of another tenant of the Building or would 
likely impair the dignity, reputation or character of the Building.

                           (4)      if, in Landlord's reasonable judgement, 
the financial worth or capacity of the proposed assignee or sublessee does 
not meet the credit standards applied by Landlord for other tenants under 
leases with comparable terms, or in Landlord's sole and absolute discretion, 
the character, reputation, or business of the proposed assignee or sublessee 
is not consistent with the quality of the other tenancies in the Building;

                           (5)      any portion of the Building or Premises 
would become subject to additional or different governmental laws and 
regulations including, without limitation, the ADA and Title 24; provided 
that, if Tenant elects to be responsible and pay for all costs resulting from 
said additional or different governmental laws and regulations including, 
without limitation, the ADA and Title 24, it shall not be reasonable for 
Landlord to withhold or delay its consent;

                           (6)      if the proposed assignee or sublessee is 
an existing tenant, or affiliate of an existing tenant, of the Building; or

                           (7)      if the proposed use is prohibited by law 
or by any provision of this Lease, including, without limitation, the rules 
and regulations then in effect; or


                                 27
<PAGE>


                           (8)      if Landlord is negotiating with, and has 
at any time within the past sixty (60) days negotiated with, the proposed 
assignee or sublessee for space in the Building.

                  (e)      If, at any time during the Lease Term, Tenant desires
to assign its interest in this Lease or sublet all or any part of the Premises,
Tenant shall give written notice to Landlord ("Tenant's Notice") setting forth
the terms of the proposed transaction, which shall be expressly subject to the
provisions of this Lease, the identity of the parties to the transaction, the
proposed documentation for the transaction and reasonably detailed information
regarding the business and financial condition of the parties involved as
requested by Landlord. Landlord shall have the option, exercisable by notice
given to Tenant ("Landlord's Election Notice") within fifteen (15) days after
Tenant's Notice is given ("Landlord's Option Period"), to either (i) consent to
the assignment or subletting, in which event the provisions of Section 18(g)
hereof shall be applicable, or (ii) disapprove the proposed assignment or
subletting. In the event that Landlord fails to provide Landlord's Election
Notice during the Landlord's Option Period, Landlord shall be deemed to have
consented to the assignment or sublet, in which event the provisions of Section
18(g) hereof shall be applicable.

         Notwithstanding the foregoing or anything else to the contrary
contained herein, in the event that Tenant desires to assign its interest in
this Lease or sublet more than fifty percent (50%) of the Premises during the
last five (5) years of the Lease Term (as the same may be extended pursuant to
the terms of this Lease), Tenant shall give written notice of its intent to
market and offer such space to any third party ("Intent to Market Space") and
Landlord shall have the option, exercisable by written notice given to Tenant
within thirty (30) days after receipt of Tenant's Intent to Market Space
("Landlord's Notice") to (i) consent to Tenant's intent to market and offer such
space to a third party, or (ii) in the case of an assignment, terminate this
Lease in its entirety or, in the case of a subletting, terminate this Lease as
to the portion of the Premises proposed to be sublet, in which event Tenant
shall, on the date specified by Landlord (which shall be no less than forty-five
(45) days and no more than ninety (90) days after Landlord's Notice) surrender
the Premises, or the portion proposed to be assigned or sublet, to Landlord (if
only a portion of the Premises on a given floor is involved, Landlord shall
retain such rights of access to and from such portion of the Premises as may be
reasonably required for Landlord or its tenant(s)' use and enjoyment and Tenant
shall receive a proportionate adjustment in the Base Monthly Rental payable
hereunder). If Landlord fails to provide Tenant notice under either (i) or (ii)
above within said thirty (30) day period, Landlord shall be deemed to have
consented to Tenant's intent to market and offer such space to a third party and
the process shall be governed by the first grammatical paragraph of this Section
18(e).

         Notwithstanding anything to the contrary contained herein, in the event
that Tenant desires to sublet any part of the 20th Floor and/or 21st Floor other
than to a Permitted Transferee, it shall be a requirement that said floors be
sublet together and at the same time on a full floor basis.

                  (f)      No sublessee shall have a right further to sublet
without Landlord's prior consent, which Tenant acknowledges may be withheld in
Landlord's absolute discretion, and any 


                                  28
<PAGE>


assignment by a sublessee of its sublease shall be subject to Landlord's 
prior consent in the same manner as if Tenant were entering into a new 
sublease. No sublease, once consented to by Landlord, shall be modified or 
terminated by Tenant without Landlord's prior consent, which consent shall 
not be unreasonably withheld.

                  (g)      In the case of an assignment or sublet, fifty percent
(50%) of any sums above the rate paid by Tenant, or other economic consideration
received by Tenant as a result of such assignment or sublet, shall be paid to
Landlord, after subtracting out-of-pocket leasing commissions paid to third
party brokers by Tenant (not to exceed market rate leasing commissions) and
tenant improvement costs paid by Tenant in connection with the assignment or
sublet (provided that in no event shall said tenant improvement costs exceed Ten
Dollars ($10.00) per rentable square foot).

                  (h)      If, at any time during the Lease, Tenant sublets a
portion of the Premises pursuant to Section 18(e) above which is less than fifty
percent (50%) of the Premises, but more than twenty-five thousand (25,000)
square feet, Tenant shall only have a right to sublet said portion of the
Premises a total of four (4) times during the Lease Term; provided that, if
Tenant initially sublets the 8th Floor and/or 9th Floor (as opposed to an
initial occupancy on the 8th Floor and/or 9th Floor by Tenant), said initial
sublets on the 8th Floor and/or 9th Floor shall not be included in the four (4)
allowed sublets discussed above.

                  (i)      Regardless of Landlord's consent and regardless of
whether Landlord consent is required pursuant to the terms hereof, no subletting
or assignment shall release Tenant of Tenant's obligations under this Lease or
alter the primary liability of Tenant to pay the rental and to perform all other
obligations to be performed by Tenant hereunder. The acceptance of rental by
Landlord from any other person shall not be deemed to be a waiver by Landlord of
any provision hereof. Consent to one assignment or subletting shall not be
deemed consent to any subsequent assignment or subletting. In the event of
default by any assignee of Tenant or any successor of Tenant in the performance
of any of the terms hereof, Landlord may proceed directly against Tenant without
the necessity of exhausting remedies against such assignee or successor.

                  (j)      Any request for Landlord's consent pursuant to this
Section 18 shall also be accompanied by a payment to Landlord of Five Hundred
Dollars ($500.00) for the review, evaluation, and/or preparation of any
materials or documents; provided however, if Landlord elects to terminate
pursuant to Section 18, the Five Hundred Dollars ($500.00) shall be refunded to
Tenant. Under no other event shall any of these costs be reimbursable to Tenant.
In addition, Tenant shall pay Landlord, within ten (10) days after demand, the
amount of Landlord's reasonable out-of-pocket costs incurred in processing each
proposed assignment, transfer or sublet (including, without limitation,
attorneys' and other professional fees and costs).

                  (k)      Notwithstanding anything to the contrary contained
herein, any and all unexercised options to expand the Premises and any and all
rights of first refusal and similar rights are intended by both Landlord and
Tenant to be personal to the original Tenant set forth in the Basic Lease
Information and any Affiliates, and are not intended to benefit any other
assignee 


                                  29
<PAGE>


or sublessee hereunder. Except in the case of assignment or subletting to an 
to an Affiliate, upon any assignment of the Premises or a subletting of more 
than fifty percent (50%) of the Premises, any such options or rights to 
expand or rights of first refusal set forth in Section 52 shall automatically 
and without any further action by Landlord terminate and be of no further 
force and effect;

                  (l)      Notwithstanding anything to the contrary contained
herein, any and all unexercised options to extend or renew the term of the Lease
are intended by both Landlord and Tenant to be personal to the original Tenant
set forth in the Basic Lease Information and any Affiliates, and are not
intended to benefit any other assignee or sublessee hereunder. Except in the
case of assignment or subletting to an Affiliate, upon any assignment of the
Premises or a subletting of more than fifty percent (50%) of the Premises, any
such options or rights to extend or renew the term of the Lease in Section 51
shall automatically and without any further action by Landlord terminate and be
of no further force and effect;

                  (m)      Notwithstanding anything to the contrary contained
herein, regardless of whether Tenant initially sublets or occupies the 8th Floor
and/or 9th Floor, the 8th Floor and 9th Floor shall not be included in the fifty
percent calculations described in Sections 18(k) and 18(l) above for the first
thirty-six (36) months after the earlier of the 8th Floor Term Commencement Date
or the 9th Floor Term Commencement Date; if Tenant initially sublets the 8th
and/or 9th Floor and the sublease has a term of five (5) years or more, then
said sublease shall not be included in the fifty percent calculations described
in Sections 18(k) and 18(l) above.

                  (n)      Notwithstanding any contrary provision of law,
including California Civil Code section 1995.310, Tenant shall have no right,
and Tenant hereby waives and relinquishes any right, to cancel or terminate this
Lease in the event Landlord is determined to have unreasonably withheld or
delayed its consent to a proposed transfer, assignment or subletting.

         19.      RULES; NO DISCRIMINATION. Tenant shall faithfully observe and
comply with the rules and regulations attached to this Lease as EXHIBIT B, and
after notice thereof, all reasonable modifications thereof and additions thereto
from time to time promulgated in writing by Landlord. Landlord shall not be
responsible to Tenant for the nonperformance by any other tenant or occupant of
the Building of any of said rules and regulations. Tenant specifically covenants
and agrees that Tenant shall not discriminate against or segregate any person or
group of persons on account of race, sex, creed, color, national origin, or
ancestry in the occupancy, use, sublease, tenure or enjoyment of the Premises.

         20.      ENTRY BY LANDLORD.

                  (a)      Upon prior reasonable notice, except in the case of
an emergency when Landlord shall provide such notice as is reasonable under the
circumstances, Landlord may enter the Premises at reasonable hours to (a)
inspect the same; (b) exhibit the same to prospective purchasers, lenders or
tenants (provided, however, that Landlord shall only exhibit the Premises to
prospective tenants during or after the final one hundred eighty (180) days of
the Lease Term); (c) make repairs or perform maintenance required of Landlord
under the terms hereof or repairs to any adjoining space or utility services or
make repairs, alterations or improvements to any 


                                    30

<PAGE>

other portion of the Building; (d) supply janitor service and any other 
service to be provided by Landlord to Tenant under this Lease; and (e) post 
notices of non-responsibility (provided, however, that all such work shall be 
done as promptly as reasonably practical and so as to cause as little 
interference to Tenant as reasonably practical). Tenant hereby waives any 
claim for damages for any inconvenience to or interference with Tenant's 
business or any loss of occupancy or quiet enjoyment of the Premises 
occasioned by such entry. Landlord shall at all times have and retain a key 
with which to unlock all of the doors in, on or about the Premises (excluding 
Tenant's vaults, safes and similar areas designated in writing by Tenant in 
advance); and Landlord shall have the right to use any and all means which 
Landlord may deem proper to open Tenant's doors in an emergency in order to 
obtain entry to the Premises, and any entry to the Premises obtained by 
Landlord in an emergency shall not be construed or deemed to be a forcible or 
unlawful entry into or a detainer of the Premises or an eviction, actual or 
construction, of Tenant from the Premises or any portion thereof and Landlord 
shall have no liability to Tenant as a result thereof.

                  (b)      Notwithstanding anything to the contrary contained 
herein, except in the case of an emergency, Landlord shall not enter into any 
electrical or telephone closet, or any LAN communication or computer server 
area (collectively, "Secured Areas") on any floor occupied by Tenant so long 
as Tenant occupies the entire floor; provided that, upon prior reasonable 
notice, Landlord shall have the right to enter a Secured Area with 
appropriate Tenant personnel and in the event of an emergency Landlord shall 
have the right to enter the Secured Area at any time.

         21.      EVENTS OF DEFAULT. The following events shall constitute 
Events of Default under this Lease:

                  (a)      a default by Tenant in the payment when due of any 
rent or other sum payable hereunder and the continuation of such default for 
a period of five (5) days after written notice from Landlord that the same is 
due; provided, however, that after the second failure in any calendar year to 
pay any rent or other sum on or before the date it is due, any further 
failure during such calendar year to pay any rent or other sum on or before 
the date it is due shall be an immediate Event of Default and shall not 
require any written notice from Landlord pursuant to the Lease;

                  (b)      a default by Tenant in the performance of any of 
the other terms, covenants, agreements or conditions contained herein and, if 
the default is curable, the continuation of such default for a period of 
thirty (30) days after notice by Landlord or beyond the time reasonably 
necessary for cure if Tenant is diligently pursuing a cure, if default is of 
a nature to require more than thirty (30) days to remedy; provided, however, 
in no event shall Tenant have more than a period of one hundred eighty (180) 
days to remedy any such default;

                  (c)      the bankruptcy or insolvency of Tenant, transfer 
by Tenant in fraud of creditors, an assignment by Tenant for the benefit of 
creditors, or the commencement of any proceedings of any kind by or against 
Tenant under any provision of the Federal Bankruptcy Act or under any other 
insolvency, bankruptcy or reorganization act unless, in the event any such 


                                       31
<PAGE>

proceedings are involuntary, Tenant is discharged from the same within sixty 
(60) days thereafter;

                  (d)      the appointment of a receiver for a substantial part
of the assets of Tenant;

                  (e)      the abandonment of the Premises by Tenant;

                  (f)      the levy upon this Lease or any estate of Tenant
hereunder by any attachment or execution and the failure to have such attachment
or execution vacated within thirty (30) days thereafter; or

                  (g)      the default of a guarantor under a guaranty or
repudiation of a guaranty required under this Lease.

In no event shall this Lease be assigned or assignable by reason of 
any voluntary or involuntary bankruptcy proceedings, nor shall any rights or 
privileges hereunder be an asset of Tenant, the trustee, 
debtor-in-possession, or the debtor's estate in any bankruptcy, insolvency or 
reorganization proceedings.

         22.      TERMINATION UPON DEFAULT. Upon the occurrence of any Event 
of Default by Tenant hereunder, Landlord may, at its option and without any 
further notice or demand, in addition to any other rights and remedies given 
hereunder or by law, terminate this Lease and exercise its remedies relating 
thereto in accordance with the following provisions:

                  (a)      Landlord shall have the right, so long as the 
Event of Default remains uncured, to give notice of termination to Tenant, 
and on the date specified in such notice this Lease shall terminate.

                  (b)      In the event of any such termination of this 
Lease, Landlord may then or at any time thereafter by judicial process, 
re-enter the Premises and remove therefrom all persons and property and again 
repossess and enjoy the Premises, without prejudice to any other remedies 
that Landlord may have by reason of Tenant's default or of such termination.

                  (c)      In the event of any such termination of this 
Lease, and in addition to any other rights and remedies Landlord may have, 
Landlord shall have all of the rights and remedies of a landlord provided by 
Section 1951.2 of the California Civil Code. The amount of damages which 
Landlord may recover in event of such termination shall include, without 
limitation: (1) the worth at the time of award (computed by discounting such 
amount at the discount rate of the Federal Reserve Bank of San Francisco at 
the time of award plus one percent) of the amount by which the unpaid rent 
for the balance of the term after the time of award exceeds the amount of 
rental loss that Tenant proves could be reasonably avoided; (2) all legal 
expenses and other related costs incurred by Landlord following Tenant's 
default; (3) all costs incurred by Landlord in restoring the Premises to good 
order and condition, or in remodeling, renovating or otherwise preparing the 
Premises for reletting; (4) all costs (including, without limitation, any 
brokerage commissions) actually incurred by Landlord in reletting the 
Premises; and (5) any and all other damages suffered by Landlord.


                                       32
<PAGE>

                  (d)      After terminating this Lease, Landlord may remove 
any and all personal property located in the Premises and place such property 
in a public or private warehouse or elsewhere at the sole cost and expense of 
Tenant. In the event that Tenant shall not immediately pay the cost of 
storage of such property after the same has been stored for a period of 
thirty (30) days or more, Landlord may sell any or all thereof at a public or 
private sale in such manner and at such times and places as Landlord in its 
sole discretion may deem proper, without notice to or demand upon Tenant. 
Tenant waives all claims for damages that may be caused by Landlord's 
removing or storing or selling the property as herein provided, and Tenant 
shall indemnify and hold Landlord free and harmless from and against any and 
all claims, damages, liabilities, losses, costs and expenses, including, 
without limitation, all costs of court and attorneys' fees of Landlord 
occasioned thereby.

                  (e)      In the event of the occurrence of any of the 
events specified in Section 21(c) of this Lease, if Landlord shall not choose 
to exercise, or by law shall not be able to exercise, its rights hereunder to 
terminate this Lease, then, in addition to any other rights of Landlord 
hereunder or by law, (i) Landlord may discontinue the services provided 
pursuant to Section 7 of this Lease, unless Landlord has received 
compensation in advance for such services in the amount of Landlord's 
reasonable estimate of the compensation required with respect to such 
services, and (ii) neither Tenant, as debtor-in-possession, nor any trustee 
or other person (collectively, the "Assuming Tenant") shall be entitled to 
assume this Lease unless on or before the date of such assumption, the 
Assuming Tenant (a) cures, or provides adequate assurance that the Assuming 
Tenant will promptly cure, any existing default under this Lease, (b) 
compensates, or provides adequate assurance that the Assuming Tenant will 
promptly compensate Landlord for any pecuniary loss (including, without 
limitation, attorneys' fees and disbursements) resulting from such default, 
and (c) provides adequate assurance of future performance under this Lease. 
For purposes of this Section 22(e) "adequate assurance" of such cure, 
compensation or future performance shall be effected by the establishment of 
an escrow fund for the amount at issue or by bonding.

         23.      CONTINUATION AFTER DEFAULT. Landlord shall have the remedy 
described in California Civil Code Section 1951.4 (i.e. Landlord may continue 
this Lease in effect after Tenant's abandonment and recover rental as it 
becomes due, because Tenant has the right to sublet or assign, subject only 
to reasonable limitations). Even though Tenant has breached this Lease and 
abandoned the Premises, this Lease shall continue in effect for so long as 
Landlord does not terminate Tenant's right to possession, and Landlord may 
enforce all its rights and remedies as it becomes due under this Lease. Acts 
of maintenance or preservation or efforts to relet the Premises or the 
appointment of a receiver upon initiative of Landlord to protect Landlord's 
interest under this Lease shall not constitute a termination of Tenant's 
right to possession.

         24.      OTHER RELIEF. The remedies provided for in this Lease are 
in addition to any other remedies available to Landlord at law or in equity, 
by statute or otherwise.

         25.      LANDLORD'S RIGHT TO CURE DEFAULTS. All agreements and 
provisions to be performed by Tenant under any of the terms of this Lease 
shall be at its sole cost and expense 

                                       33
<PAGE>

and without any abatement of rental. If Tenant shall fail to pay any sum of 
money, other than rental, required to be paid by it hereunder or shall fail 
to perform any other act on its part to be performed hereunder and such 
failure shall continue for thirty (30) days after notice thereof by Landlord, 
or such longer period as may be allowed hereunder, Landlord may, but shall 
not be obligated so to do, and without waiving or releasing Tenant from any 
obligations of Tenant, make any such payment or perform any such other act on 
Tenant's part to be made or performed as in this Lease provided to the extent 
Landlord may deem desirable. All sums so paid by Landlord (with interest at 
an annual rate of thirteen percent (13%), but in no event in excess of the 
maximum rate of interest permitted by law) and all necessary incidental costs 
shall be payable to Landlord on demand.

         26.      LANDLORD DEFAULT. Landlord's failure to perform any of its 
obligations under this Lease shall constitute an Event of Default by Landlord 
if the failure continues for thirty (30) days after written notice of the 
failure from Tenant to Landlord. If the required performance cannot be 
completed within thirty (30) days, Landlord's failure to perform shall not 
constitute an Event of Default, provided Landlord undertakes to cure the 
failure within the thirty (30) days and diligently and continuously attempts 
to complete this cure as soon as reasonably possible.

         27.      ATTORNEYS' FEES. If any action arising out of this Lease is 
brought by either party hereto against the other, then and in that event the 
unsuccessful party to such action shall pay to the prevailing party all costs 
and expenses of such action and any appeal related thereto, including 
reasonable attorneys' fees, incurred by such prevailing party, and if the 
prevailing party shall recover judgment in such action, such costs expenses 
and attorneys' fees shall be included in and as part of such judgment.

         28.      EMINENT DOMAIN. If all or any part of the Premises shall be 
taken as a result of eminent domain action or voluntary deed under threat 
thereof, this Lease shall terminate as to the part so taken as of the date of 
taking, and, in the case of a partial taking, either Landlord or Tenant shall 
have the right to terminate this Lease as to the balance of the Premises by 
notice to the other within thirty (30) days after such date; provided, 
however, that a condition to the exercise by Tenant of such right to 
terminate shall be that the portion of the Premises taken shall be of such 
extent and nature so as substantially to handicap, impede or impair Tenant's 
use of the balance of the Premises. In the event of any taking, Landlord 
shall be entitled to any and all compensation, damages, income, rent, awards, 
or any interest therein whatsoever which may be paid or made in connection 
therewith, and Tenant shall have no claim against Landlord for the value of 
any unexpired Lease Term or otherwise. In the event of a partial taking of 
the Premises which does not result in a termination of this Lease, the 
monthly rental thereafter to be paid shall be equitably reduced. Nothing 
contained herein, however, shall be deemed to give Landlord any interest in, 
or to require Tenant to assign to Landlord, any award made to Tenant 
specifically for its relocation expenses, the taking of personal property and 
fixtures belonging to Tenant, or the interruption of or damage to Tenant's 
business if such award is made separately to Tenant and not as part of the 
damages recoverable by Landlord and if Tenant's claim does not adversely 
affect Landlord's award or interfere with Landlord's prosecution of its claim 
for the condemnation or taking.

                                       34
<PAGE>

         29.      SUBORDINATION AND NONDISTURBANCE.

                  (a)      This Lease shall be subject and subordinate to any 
mortgage, deed of trust, or any other hypothecation for security now or 
hereafter placed upon the Building and to any and all advances made on the 
security thereof or Landlord's interest therein, and to all renewals, 
modifications, consolidations, replacements and extensions thereof. In the 
event any mortgage or deed of trust to which this Lease is subordinate is 
foreclosed or a deed in lieu of foreclosure is given to the mortgagee or 
beneficiary, Tenant shall attorn to the purchaser at the foreclosure sale or 
to the grantee under the deed in lieu of foreclosure. Tenant agrees to 
execute within ten (10) days any documents required to effectuate such 
subordination, to make this Lease prior to the lien of any mortgage or deed 
of trust as may be requested by the holder of any such mortgage or deed of 
trust, or to evidence such attornment, provided, however, as a pre-condition 
to Tenant's subordination to a mortgage and any subordination set forth in 
this Section below, the mortgagee shall first provide Tenant with a 
Subordination, Non-Disturbance and Attornment Agreement in the form attached 
hereto as Exhibit F.

                  (b)      In the event any mortgage or deed of trust which 
is entered into by Landlord after the date hereof to which this Lease is 
subordinate is foreclosed or a deed in lieu of foreclosure is given to the 
mortgagee or beneficiary, this Lease shall not be barred, terminated, cut off 
or foreclosed, nor shall the rights and possession of Tenant hereunder be 
disturbed if Tenant shall not then be in default in the payment of rental and 
other sums due hereunder or otherwise be in default under the terms of this 
Lease, and if Tenant shall attorn to the purchaser, or grantee as provided in 
Section 29(a) above (provided, that, the non-disturbance of Tenant's rights 
and possession of this Section 29(b) shall not be contingent on whether 
Landlord requests Tenant's attornment) or, if requested, enter into a new 
lease for the balance of the term hereof upon the same terms and provisions 
as are contained in this Lease.

                  (c)      Landlord shall obtain a non-disturbance agreement 
from the holder of the existing first deed of trust covering the Building in 
the form attached hereto as Exhibit F.

         30.      NO MERGER. The voluntary or other surrender of this Lease 
by Tenant, or a mutual cancellation thereof, shall not work a merger, and 
shall, at the option of Landlord, terminate all or any existing subleases or 
subtenancies, or operate as an assignment to it of any or all such subleases 
or subtenancies.

         31.      AMENDMENTS. This Lease may not be amended or modified in 
any respect whatsoever except by an instrument in writing signed by Landlord 
and Tenant.

         32.      ESTOPPEL CERTIFICATE.

                  At any time and from time to time but on not less than ten 
(10) business days prior notice by Landlord, Tenant shall execute, 
acknowledge, and deliver to Landlord, promptly upon request, a certificate in 
substantially the form attached hereto as EXHIBIT E certifying (a) that this 
Lease is unmodified and in full force and effect (or, if there have been 
modifications, that this Lease is in full force and effect, as modified, and 
stating the date and nature of each modification), (b) the date, if any, to 
which rental and other sums payable hereunder have been 

                                       35
<PAGE>

paid, (c) that no notice has been received by Tenant of any default which has 
not been cured, except as to defaults specified in the certificate, (d) 
whether there is then existing any claim by Tenant of default hereunder by 
Landlord, and, if so, specifying the nature thereof, and (e) such other 
matters as may be reasonably requested by Landlord Any such certificate may 
be relied upon by any prospective purchaser, mortgagee or beneficiary under 
any deed of trust on the Building or any part thereof.

         33.      NO LIGHT, AIR, OR VIEW EASEMENT. Any diminution or shutting 
off of light, air or view by any structure which may be erected on lands 
adjacent to the Building shall in no way affect this Lease or impose any 
liability on Landlord.

         34.      HOLDING OVER. If Tenant holds possession of the Premises 
after expiration of the Lease Term, Tenant shall become a tenant from month 
to month upon the terms herein specified but at a monthly rental equivalent 
to one hundred fifty percent (150%) of the monthly rental payable by Tenant 
during the last full month prior to the expiration of the Lease Term, payable 
in advance on or before the first day of each month. Without limiting and in 
addition to the foregoing, Tenant hereby agrees to indemnify, defend and hold 
harmless Landlord, its beneficiary, and their respective agents, contractors 
and employees, from and against any and all claims, liabilities, actions, 
losses, damages (including without limitation, direct, indirect, incidental 
and consequential) and expenses (including, without limitation, court costs 
and reasonable attorneys' fees) asserted against or sustained by any such 
party and arising from or by reason of such retention of possession, which 
obligations shall survive the expiration or termination of the Lease Term.

         35.      SECURITY DEPOSIT.

                  (a)      Within five (5) business days of execution of the 
Lease by both parties, Tenant shall deposit with Landlord an unconditional, 
irrevocable letter of credit (the "Letter of Credit"), in the amount of Four 
Million Five Hundred Thousand Dollars ($4,500,000) as a security deposit. 
The Letter of Credit shall (i) be issued by a commercial bank reasonably 
satisfactory to Landlord ("Issuer"); (ii) be an unconditional and irrevocable 
letter of credit; (iii) be payable to Landlord; (iv) require that any draw on 
the Letter of Credit shall be made only upon receipt by the Issuer of a 
demand notice from Landlord (the "Demand Notice"); (v) provide that it is 
governed by the Uniform Customs and Practice for Documentary Credits (1993 
revisions), International Chamber of Commerce Publication No. 500; (vi) 
comply with any requirements for the Letter of Credit as set forth in Exhibit 
F; and (vi) otherwise be in a form reasonably acceptable to Landlord. Tenant 
shall keep the Letter of Credit, or a renewal thereof, in effect during the 
entire Lease Term, as the same may be extended, plus a period of four (4) 
weeks thereafter. At least thirty (30) days prior to the expiration of the 
Letter of Credit, the term thereof shall be renewed or extended pursuant to 
an amendment thereto reasonably acceptable to the Landlord and any failure to 
so renew or extend the Letter of Credit shall entitle Landlord to immediately 
draw down all sums available thereunder. If Tenant fails to renew or extend 
the Letter of Credit and Landlord draws downs all sums available thereunder, 
Tenant shall have the right to replace the expired Letter of Credit with a 
letter of credit meeting the requirements set forth herein. Upon Tenant's 
replacement of the Letter of Credit with a substitute letter of credit 

                                       36
<PAGE>

meeting the requirements set forth herein, Landlord shall immediately return 
the drawn down sums to Tenant upon demand.

                  (b)      Provided that Tenant has not committed a monetary 
Event of Default during the previous twelve (12) months (or by the time of 
the merger described below) and that any other Event of Default has not 
occurred with respect to Tenant which remains uncured, Tenant may reduce the 
amount of the Letter of Credit to Two Million Two Hundred Fifty Thousand 
Dollars ($2,250,000) upon completion of Tenant's merger transaction as 
described in the S-4 Registration document filed July 12, 1999 by Tenant, by 
an amendment or by substitution of a new letter of credit which complies with 
the requirements of this paragraph, which reflects such reduced amount (the 
"Amended Amount").

                  (c)      Provided that Tenant has not committed a monetary 
Event of Default during the previous twenty-four (24) months and that any 
other Event of Default has not occurred with respect to Tenant which remains 
uncured, Tenant may reduce the amount of the Letter of Credit to Six Hundred 
Thirty Three Thousand Six Hundred Six Dollars ($633,606) by an amendment or 
by substitution of a new letter of credit which complies with the 
requirements of this paragraph, which reflects such reduced amount (the 
"Further Amended Amount").

                  (d)      Provided that Tenant has not committed a monetary 
Event of Default during the previous twelve (12) months and that any other 
Event of Default has not occurred with respect to Tenant and remains uncured, 
in the event that Tenant obtains a "BBB" credit rating from Standard & Poors, 
or a rating equivalent to such Standard & Poors' rating from Moody's, Fitch, 
or any other comparable rating agency acceptable to Landlord, for senior 
unsecured debt, the Letter of Credit shall be returned to Tenant within 
thirty (30) days after Tenant's prior written notification to Landlord that 
it has received such rating. In the event that said senior unsecured debt 
credit rating is later withdrawn or reduced, then Tenant shall have thirty 
(30) days to post a new Letter of Credit in an amount calculated in 
accordance with the reductions permitted under this subparagraph and 
subparagraphs 32(a) and (b) above.

                  (e)      If an Event of Default occurs, Landlord shall be 
entitled to draw upon the Letter of Credit in the amount determined by 
Landlord necessary to cure such Event of Default and compensate Landlord for 
any damages suffered by Landlord as a result thereof. Tenant shall 
immediately restore the face amount of the Letter of Credit to the face 
amount which was applicable immediately prior to Landlord's drawing down sums 
thereunder pursuant to an amendment to the Letter of Credit reasonably 
acceptable to Landlord or a replacement of the Letter of Credit (provided the 
Letter of Credit requirements in Section 35(a) are satisfied, or shall 
deposit with Landlord a cash sum in an amount which when added to the amount 
available to be drawn under the Letter of Credit equals the amount of the 
Letter of Credit immediately prior to Landlord's draw under the Letter of 
Credit. Any cash deposited with Landlord shall be held by Landlord as a 
Security Deposit pursuant to subparagraph 32(b) of this Lease. 
Notwithstanding anything to the contrary contained herein, any failure by 
Tenant to restore the face value of the Letter of Credit to such amount, to 
replace the Letter of Credit or to deposit with Landlord a corresponding cash 
amount, within five business (5) days after its receipt of a written request 
from Landlord shall be an Event of Default. Without limiting any other rights 
or remedies of 

                                       37
<PAGE>

Landlord as a result of such Event of Default, Landlord may draw down any 
sums then remaining under the Letter of Credit and Tenant shall within five 
(5) business days after its receipt of a written request from Landlord 
deposit cash with Landlord in an amount sufficient to bring the sums held by 
Landlord to an amount equal to the current Amended Amount. The cash then held 
by Landlord in the amount of such current Amended Amount shall be held as the 
Security Deposit pursuant to the provisions of subparagraph 32 of the Lease 
for the remainder of the term of the Lease. In the event of termination of 
Landlord's interest in this Lease, Landlord shall transfer said deposit to 
Landlord's successor in interest.

                  (f)      The Security Deposit shall be held by Landlord as 
security for the faithful performance by Tenant of all the provisions of this 
Lease to be performed or observed by Tenant. If Tenant fails to pay rent or 
other sums due hereunder, or otherwise defaults with respect to any provision 
of this Lease, Landlord may use, apply or retain all or any portion of the 
Security Deposit for the payment of any rent or other sum in default or for 
the payment of any other sum to which Tenant compensates Landlord for any 
loss or damage which Landlord may suffer thereby. If Landlord so uses or 
applies all or any portion of the Security Deposit, Tenant shall within ten 
(10) days after demand therefor deposit cash with Landlord in an amount 
sufficient to restore the Security Deposit to the full amount thereof and 
Tenant's failure to do so shall be a material breach of this Lease.

                  (g)      Subject to the other provisions of this Lease, at 
the end of the Lease Term, as the same may be extended as provided hereunder, 
the then current Letter of Credit and any amount held by Landlord as a 
Security Deposit shall be returned to Tenant within sixty (60) days of the 
Term Expiration Date. The Letter of Credit and Security Deposit amount, if 
any, shall be returned to Tenant pursuant to this Section 35(g) by the then 
Landlord regardless of whether the then Landlord, or any buyer in a 
foreclosure sale has received the Letter of Credit or Security Deposit; 
provided the foregoing shall not apply to any lender or mortgagee, unless 
specifically agreed to in writing by such lender or mortgagee.

         36.      WAIVER. The waiver by Landlord or Tenant of any agreement, 
condition or provision herein contained shall not be deemed to be a waiver of 
any subsequent breach of the same or any other agreement, condition or 
provision herein contained, nor shall any custom or practice which may grow 
up between the parties in the administration of the terms hereof be construed 
to waive or to lessen the right of either party to insist upon the 
performance by the other party in strict accordance with such terms. The 
subsequent acceptance of rental hereunder by Landlord shall not be deemed to 
be a waiver of any preceding breach by Tenant of any agreement, condition or 
provision of this Lease, other than the failure of Tenant to pay the 
particular rental so accepted, regardless of Landlord's knowledge of 
preceding breach at the time of acceptance of the rental.

         37.      NOTICES AND CONSENTS. All notices, consents, demands and 
other communications from one party to the other that are given pursuant to 
the terms of this Lease shall be in writing and shall be deemed to have been 
fully given (i) three (3) days after deposit in the United States mail, 
certified or registered, postage prepaid, (ii) one (1) day after mailed by 
overnight courier service, (iii) on the date of delivery if personally 
delivered (provided that, personal delivery in 

                                       38
<PAGE>

the Building is not effective delivery to the Landlord) and addressed as 
follows: prior to the Rent Commencement Date, to Tenant at the address 
specified in the Basic Lease Information, and to the Premises thereafter, or 
to such other place as Tenant may from time to time designate in a notice to 
Landlord; and to Landlord at the address specified in the Basic Lease 
Information, or to such other place as Landlord may from time to time 
designate in a notice to Tenant.

         38.      COMPLETE AGREEMENT. There are no oral agreements between 
Landlord and Tenant affecting this Lease, and this Lease supersedes and 
cancels any and all previous negotiations, arrangements, brochures, 
agreements, letters of intent and understandings if any, between Landlord and 
Tenant or displayed by Landlord to Tenant with respect to the subject matter 
of this Lease, the Building or related facilities.

         39.      CORPORATE AUTHORITY. If Tenant signs as a corporation, 
partnership or other entity, each of the persons executing this Lease on 
behalf of Tenant warrants that Tenant is duly organized and existing, that 
Tenant has been and is qualified to do business in California, that Tenant 
has full right and authority to enter into this Lease, and that each and both 
of the persons signing on behalf of Tenant were authorized by Tenant to do so 
on its behalf. If Landlord signs as a corporation, partnership or other 
entity, each of the persons executing this Lease on behalf of Landlord 
warrants that each of the persons signing on behalf of Landlord were 
authorized by Landlord to do so on its behalf.

         40.      STORAGE SPACE. Tenant shall have the right, exercisable by 
written notice to Landlord prior to December 31, 1999, to lease up to 
approximately 7,000 square feet of storage space in the Building, but 
noncontiguous to the Premises, on a month to month basis at the rate of 
$16.00 per square foot per annum commencing on the date which is thirty (30) 
days after Tenant has provided notice to Landlord of its intention to lease 
such storage space. After December 31, 1999, Tenant may only lease such 
storage space as available and at such rates as Landlord may then be offering 
such space to third parties. Upon Tenant's written notice to Landlord 
pursuant to this Section 40, Tenant and Landlord shall enter into a separate 
lease for the storage space.

         41.      NO CONSEQUENTIAL DAMAGES. Notwithstanding any other 
provision of this Lease, Landlord shall not be liable for any consequential 
damages, nor shall Landlord be liable for loss of or damage to artwork, 
currency, jewelry, bullion, unique or valuable documents, securities or other 
valuables, or for other property not in the nature of ordinary fixtures, 
furnishings and equipment used in general administrative and executive office 
activities and functions.

         42.      MISCELLANEOUS. If there be more than one Tenant, the 
obligations hereunder imposed upon Tenant shall be joint and several. The 
words "include," "includes" and "including" shall be deemed to be followed by 
the phrase "without limitation." The term "Landlord" or any pronoun used in 
place thereof includes the plural as well as the singular and the successors 
and assigns of Landlord. The term "Tenant" or any pronoun used in place 
thereof includes the plural as well as the singular and individuals, firms, 
associations, partner-ships and corporations, and their and each of their 
respective heirs, executors, administrators, successors and permitted 
assigns, according to the context hereof. The term "person" includes the 
plural as 

                                       39
<PAGE>

well as the singular and individuals, firms, associations, partnerships and 
corporations. Words used in any gender include other genders. Time is of the 
essence of this Lease and each and all of its provisions. Submission of this 
instrument for examination or signature by Tenant does not constitute a 
reservation of or option for lease, and it is not effective as a lease or 
otherwise until execution and delivery by both Landlord and Tenant. The 
agreements, conditions and provisions herein contained shall, subject to the 
provisions as to assignment, apply to and bind the heirs, executors, 
administrators, successors and assigns of the parties hereto. Subject to the 
provisions of Section 47 below, Tenant shall not, without the consent of 
Landlord, use the name of the Building for any purpose other than as the 
address of the business to be conducted by Tenant in the Premises. Upon the 
request of Landlord, Tenant shall provide to Landlord from time to time, at 
no expense to Landlord, copies of such financial statements with respect to 
Tenant as may have been prepared by or for Tenant. Landlord's acceptance of a 
partial rent payment shall not constitute a waiver of any rights of Tenant or 
Landlord, including, without limitation, any right Landlord may have to 
recover possession of the Premises, in unlawful detainer, or otherwise. 
Tenant shall not record this Lease or any portion or any reference hereto. If 
Tenant shall record this Lease, or shall permit or causes this Lease, or any 
portion hereof or reference hereto to be recorded, this Lease shall, at 
Landlord's option terminate, or Landlord may declare a default hereunder and 
pursue any and all remedies provided for in this Lease. If any provisions of 
this Lease shall be determined to be illegal or unenforceable, such 
determination shall not affect any other provision of this Lease and all such 
other provisions shall remain in full force and effect. This Lease shall be 
governed by and construed pursuant to the laws of the State of California.

         43.      ABANDONMENT. Subject to Tenant's rights under Section 18 of 
this Lease, Tenant shall not vacate or abandon the Premises or any part 
thereof at any time during the Lease Term. Tenant shall not be deemed to have 
vacated the Premises if, upon prior written notice to Landlord, Tenant 
temporarily vacates not more that two floors in the Premises for a period not 
to exceed three (3) months. Tenant understands that if Tenant should leave 
the Premises or any part thereof vacant or abandoned, the risk of fire, other 
casualty, and vandalism to the Premises and the Building will be increased 
and that, therefore, such action by Tenant shall constitute a material breach 
of this Lease, whether or not Tenant continues to pay rent and additional 
rent under this Lease. If Tenant shall vacate, abandon or surrender the 
Premises, or be dispossessed by process of law or otherwise, any personal 
property belonging to Tenant and left on the Premises shall be deemed to be 
abandoned, at the option of Landlord, and Landlord may sell or otherwise 
dispose of such personal property in any commercially reasonable manner.

         44.      AMERICANS WITH DISABILITIES ACT AND SIMILAR ACTS. 
Notwithstanding anything to the contrary contained herein or in the Lease, 
Tenant, at its sole cost and expense, shall (i) cause all alterations, 
additions, improvements and repairs to the Premises to comply with the 
provisions of the ADA, Title 24 of the California Administrative Code, and 
other similar federal, state, and local laws and regulations, including, 
without limitation, any alterations required under ADA for the purposes of 
"public accommodations" (as that term is used in the ADA), and (ii) reimburse 
Landlord upon demand for any and all costs and expenses incurred by Landlord 
to comply with ADA, Title 24, or such similar federal, state, or local laws 
and regulations in any other portion of the Building in which the Premises 
are located arising out of Tenant's specific use of or construction in the 
Premises, excluding any such costs and expenses arising out of the 


                                       40

<PAGE>

tenant improvement work described in EXHIBIT C and approved by Landlord. 
Except as provided above, Tenant shall have no responsibility to comply with 
such laws in portions of the Building outside of the Premises.

         45.      EXHIBITS.  The exhibit(s) and addendum, if any, specified 
in the Basic Lease Information are attached to this Lease and by this 
reference made a part hereof.

         46.      LANDLORD'S LIABILITY; SALE OF BUILDING.  The term 
"Landlord," as used in this Lease, shall mean only the owner or owners of the 
Building at the time in question. Tenant acknowledges and agrees that the 
liability of Landlord with respect to its obligations under this Lease, or 
arising in connection with the ownership, operation, management, leasing, 
repair, renovation, alteration or any other matter relating to the Building 
or the Premises, is limited to Landlord's interest in the Building, and 
Tenant agrees to look solely to Landlord's interest in the Building to 
satisfy any claim or judgment against or any liability or obligation of 
Landlord to Tenant under this Lease. In no event shall any partner, officer, 
director, employee, trustee, beneficiary, advisor, investment manager, 
manager, agent, member, advisor, or shareholder of Landlord have any personal 
liability to Tenant with respect to any liability or obligation of Landlord 
to Tenant, and no recourse shall be had by Tenant against any such parties or 
the assets of any such parties to satisfy any claim or judgment of Tenant for 
Landlord's breach of any of its obligations under this Lease. In addition, in 
the event of any conveyance of title to the Building, Landlord shall be 
relieved of all liability with respect to Landlord's obligations to be 
performed under this Lease after the date of such conveyance; provided that, 
the new owner has assumed the obligations under this Lease in writing. If 
Tenant provides Landlord with any security for Tenant's performance of its 
obligations hereunder, Landlord shall transfer such security to the grantee 
or transferee of Landlord's interest in the Real Property, and once such 
transfer has been made, Landlord shall be released from any further 
responsibility or liability of such security. Wherever in this Lease Tenant 
(i) releases Landlord from any claim or liability, (ii) waives or limits any 
of its rights to assert any claim against Landlord or to seek recourse 
against any property of Landlord or (iii) agrees to indemnify Landlord 
against any matters, the relevant release, waiver, limitation or indemnity 
shall run in favor of and apply to Landlord, the direct and indirect 
constituent shareholders, partners, trustees, beneficiaries, members or other 
owners of Landlord, and the directors, officers, employees and agents of 
Landlord and each such constituent shareholder, partner or other owner.

         47.      NAME OF BUILDING AND SIGNAGE.

                  (a)      Landlord shall provide Tenant, at Landlord's sole 
cost and expense, with a proportionate share of the existing Building 
directory in the main lobby and in any future directory in the Building annex 
lobby. Tenant may display its name or logo in such directory, consistent with 
the current directory format and in a manner approved by Landlord. Landlord 
shall provide Tenant, at Landlord's sole cost and expense, enhanced building 
signage at the top of the Building directory in the main lobby and the future 
directory in the Building annex lobby. Landlord shall provide Tenant, at 
Landlord's sole cost and expense, building standard tenant identification on 
each floor of the Premises.


                                       41

<PAGE>

                  (b)      During the Lease Term and so long as Tenant 
occupies at least one hundred thousand (100,000) rentable square feet in the 
Building, Tenant shall have the exclusive right, at Tenant's sole cost and 
expense, to erect and maintain signage with its corporate name and/or logo, 
subject to Landlord's approval, on the exterior of the Building in the 
current location of the Standard Oil plaque at the entrance to the Building 
and at the top of Building directories within the main lobby and annex lobby 
of the Building as set forth in Section 47(a) above. If Tenant does not 
occupy at least one hundred thousand (100,000) rentable square feet in the 
Building, Tenant shall have a nonexclusive right to erect and maintain such 
signage within the main lobby and annex lobby of the Building, in size and 
location appropriately reflecting Tenant's proportional occupancy of the 
Building. Tenant shall comply, at its sole cost and expense, with any and all 
laws, statutes, ordinances and governmental rules, regulations or 
requirements applicable to such signage, including, without limitation, all 
historical designation regulations and requirements ("Signage Legal 
Requirements"), and all such signage shall be subject to Landlord's prior 
approval, which approval shall not be unreasonably withheld. Tenant may 
request additional signage on the exterior of the building, subject to 
Landlord's approval. In the event that Landlord approves such additional 
signage on the exterior of the Building, Tenant shall be responsible for 
obtaining all necessary approvals from governmental authorities and paying 
all costs thereof, including, but not limited to any historical review 
agencies, for said additional signage and complying with all Signage Legal 
Requirements and paying all costs for the manufacturing and installation of 
said signage. For purposes of this Section 47, space shall be deemed 
"occupied" by Tenant if, and only if, such space is leased to Tenant and, 
such space is not subject to a sublease or assignment by Tenant or any other 
form of occupancy agreement between Tenant and any third party.

                  (c)      During the Lease Term and so long as Tenant 
occupies at least one hundred thousand (100,000) rentable square feet in the 
Building, (i) Tenant shall have the exclusive right to name the Building, as 
reasonably approved by Landlord, and Landlord shall adopt and reasonably use 
the name as designated by Tenant on or before December 31, 1999, and 
(ii) Tenant shall have the exclusive right to the exterior premier office 
signage at the main lobby entrance and the annex entrance to the Building. 
Notwithstanding the foregoing, Tenant and any Affiliate shall have the right 
to use its corporate name or a variation thereof as the Building name. Tenant 
shall have the right to rename the Building up to four (4) times during the 
Lease Term, as extended pursuant to the terms herein, subject to Landlord's 
reasonable approval. Landlord shall use such name designated by Tenant in 
Building marketing or promotional materials produced by or on behalf of 
Landlord; provided, that, Tenant grants Landlord a license to use such name 
for said purposes and in the case of a logo, Tenant provides Landlord with 
the appropriate logo art work for use in connection with said materials. 
Tenant agrees that Landlord and other tenants of the Building may, but are 
not required to, use such name as part of their address. If Tenant changes 
its designation of the Building name after Tenant's initial designation of 
the Building name pursuant to this Section 47(c), Tenant shall reimburse 
Landlord for all actual out-of-pocket costs and expenses incurred by Landlord 
in reprinting the Building stationary, advertising and promotional materials 
and making all required signage changes.

                  (d)      In the event that Tenant does not occupy at least 
one hundred thousand (100,000) rentable square feet in the Building, either 
Landlord or Tenant shall have the right to 


                                       42

<PAGE>

remove any signage erected by Tenant on the exterior of the Building at the 
sole cost and expense of Tenant, upon which all use of the name designated by 
Tenant pursuant to Section 47(c) above to identify the Building shall cease 
and Landlord shall thereafter have the right, in its sole and absolute 
discretion, to cease using such name in Building marketing and promotional 
materials and to rename the Building.

                  (e)      The rights granted to Tenant pursuant to this 
Section shall be personal to Xoom.com, Inc. and any Affiliate, and such right 
shall not inure to the benefit of any assignee or subtenant of Xoom.com, Inc., 
except to an Affiliate.

                  (f)      Notwithstanding anything to the contrary contained 
herein, any signage rights specifically designated to retail tenants in the 
Building shall be excluded from Tenant's rights herein.

         48.      HAZARDOUS SUBSTANCE DISCLOSURE.

                  (a)      California law requires landlords to disclose to 
tenants the existence of certain Hazardous Materials. Accordingly, the 
existence of gasoline and other automotive fluids, asbestos containing 
materials, maintenance fluids, copying fluids and other office supplies and 
equipment, certain construction and finish materials, tobacco smoke, 
cosmetics and other personal items must be disclosed. Gasoline and other 
automotive fluids are found in the garage area of the Building. Cleaning, 
lubricating and hydraulic fluids used in the operation and maintenance of the 
Building are found in the utility areas of the Building not generally 
accessible to Building occupants or the public. Many Building occupants use 
copy machines and printers with associated fluids and toners, and pens, 
markers, inks, and office equipment that may contain Hazardous Materials. 
Certain adhesives, paints and other construction materials and finishes used 
in portions of the Building may contain Hazardous Materials. Although smoking 
is prohibited in the public areas or the Building, these areas may from time 
to time be exposed to tobacco smoke. Building occupants and other persons 
entering the Building from time to time may use or carry prescription and 
non-prescription drugs, perfumes, cosmetics and other toiletries, and foods 
and beverages, some of which may contain Hazardous Materials.

                  (b)      Tenant acknowledges that certain reports and 
letters (collectively "Reports") dealing with the presence of ACMs in the 
Building are available for its review in the property management office of 
the Building. The Reports contain the specific locations within the Building 
where ACMs are present, describe potential health risks or impacts that may 
result from exposure to asbestos contained in the ACMs, and set forth certain 
information to convey that moving, drilling, boring or otherwise disturbing 
the ACMs may present a health risk, and consequently, should not be attempted 
by any person who is not qualified to handle ACMs. Tenant acknowledges that 
it is aware of the existence, location and condition of ACMs, both friable 
and non-friable in the Building and (if applicable) in the Premises. Tenant 
agrees that it has been afforded full and adequate opportunity to inspect or 
otherwise evaluate asbestos and ACMs in the Building and Premises and that, 
subject to the Work Letter, by taking possession of the Premises, it accepts 
the condition of such Premises and the Building with respect thereto. During 
the Lease Term, and so long as Tenant occupies any portion of the Premises, 
Tenant shall 


                                       43

<PAGE>

familiarize itself and comply with all recommendations under the Reports, 
with respect to the maintenance of any and all ACMs in the Premises so as to 
prevent the release of any asbestos fibers or other ACMs. Tenant shall be 
responsible for insuring that all employees of Tenant and all individuals 
entering the Premises are aware of the matters set forth in the Reports with 
respect to the presence of ACMs in the Premises and the Building. To the 
extent any individuals enter the Premises, who are not engaged by Landlord, 
to perform maintenance, repairs, alterations or renovations, such individuals 
will be apprised by Tenant of the presence of ACMs and Tenant will make the 
contents of the Reports available to such individuals to ensure that all 
statutes, codes and regulations applicable to the handling of all ACMs in the 
Building. Tenant shall inform Landlord in a timely manner of any work to be 
undertaken in the Premises that may disturb any ACMs, so that Landlord may 
obtain a release, in form satisfactory to Landlord in its sole discretion, 
from those involved in such activities with respect to any liability accruing 
from such work undertaken in the Premises. Such notification shall be in 
addition to, and not in lieu of, any and all notifications and consents 
required under this Lease with respect to alterations or other work in the 
Premises by Tenant. Tenant shall indemnify, defend, protect and hold Landlord 
harmless from any and all claims, losses, liabilities or damages, including 
attorney's fees and costs, resulting from Tenant's failure to comply with the 
foregoing provisions related to ACMs and asbestos, including, without 
limitation, the failure to notify Landlord in the manner described above. 
Tenant will further indemnify, defend, protect and hold Landlord harmless 
from any and all claims (known and unknown), losses, liabilities or damages 
(including attorneys' fees) relating to exposure to or injury caused or 
aggravated by ACMs, directly or indirectly, from Tenant's failure to follow 
the prescribed safety requirements, precautions and procedures outlined in 
the Reports as the same may be hereinafter modified, updated or revised; or 
which results from Tenant's failure to inform individuals and employees of 
Tenant of the contents of the Reports, including, without limitation, failure 
to so inform individuals who are so undertaking alterations, renovations, 
maintenance or repairs of ACMs containing areas of the Premises or the 
Building; or which results from any failure of such individuals or Tenant's 
employees to comply with recommendations or requirements set forth in the 
Reports. By its execution of this Lease, Tenant acknowledges that the notice 
set forth hereinabove shall constitute the notice required under California 
Health and Safety Code Section 25915.5.

                  (c)      Tenant shall have no liability for the removal or 
remediation of Hazardous Material existing in the Building prior to the date 
of the execution and delivery of this Lease. Subject to Tenant's obligations 
in Section 48, Landlord shall indemnify, defend, protect and hold Tenant 
harmless from any and all claims, losses, liabilities or damages, including 
reasonable attorney's fees and costs, resulting from or arising out of the 
presence of any Hazardous Material found on, in or under the Building or 
Premises, other than any Hazardous Materials brought into the Premises or 
Building by Tenant and Tenant's agents, employees and contractors and any 
claims, losses, liabilities or damages resulting from or arising out of the 
negligence of Tenant, its agents, employees, contractors or invitees.

         49.      REAL ESTATE BROKERS.  Landlord and Tenant each represents 
and warrants to the other that such party has negotiated this Lease directly 
with the Real Estate Brokers identified in the Basic Lease Information and 
has not authorized or employed, or acted by implication to authorize or to 
employ, any other real estate broker or salesman to act for such party in 


                                       44

<PAGE>

connection with this Lease. All leasing commissions due in connection with 
this Lease shall be paid by Landlord in accordance with (i) a separate 
agreement between Landlord and Grubb & Ellis, and (ii) that certain Brokerage 
Commission Agreement by and between Landlord and The Robax Group, Inc., 
dba Rosen & Reynolds. Landlord shall indemnify, defend and hold Tenant 
harmless from and against any and all claims for said leasing commissions by 
the Real Estate Brokers identified in the Basic Lease Information. Each party 
shall indemnify, defend and hold the other harmless from and against any and 
all claims by any real estate broker or salesman other than the Real Estate 
Brokers identified in the Basic Lease Information for a commission, finder's 
fee or other compensation as a result of the inaccuracy of such party's 
representation above.

         50.      NOTICE TO MORTGAGEE; FINANCIAL STATEMENT.  If the holder of 
any mortgage covering all or a portion of the Premises shall give notice to 
Tenant that it is the holder of such mortgage and such notice includes the 
address to which notices to such mortgagee are to be sent, then Tenant agrees 
to give to said holder of such mortgage notice simultaneously with any notice 
given to Landlord to correct any default of Landlord and agrees that the 
holder of such mortgage shall have the right, within sixty (60) days after 
receipt of said notice, to commence correction of such default and diligently 
prosecute completion thereof before Tenant may take any action under this 
Lease by reason of any default. Should Landlord or mortgage holder under this 
Lease request a copy of Tenant's current financial statement, Tenant agrees 
to furnish a certified copy of same to Landlord within fifteen (15) days of 
such request; provided, that, so long as Tenant is a public company, Tenant 
agrees to provide the most recent financial statements publicly available.

         51.      OPTION TO EXTEND.

                  (a)      Tenant shall have two (2) consecutive options to 
extend the Term of this Lease with respect to all of the Premises for a 
period of five (5) years each commencing on the Term Expiration Date (the 
"Extension Period") subject to the conditions contained in this Section. The 
options to extend are sometimes referred to collectively herein as an "Option 
to Extend."

                           (i)      The Option to Extend shall be exercised, 
if at all, by written notice of exercise given to Landlord by Tenant not more 
than eighteen (18) months nor less than twelve (12) months prior to the 
expiration date of the Term Expiration Date. In the event that Tenant fails 
to deliver such exercise notice to Landlord on or before the date that is 
exactly twelve (12) months prior to the Term Expiration Date, the Option to 
Extend shall be null and void and of no further force or effect.

                           (ii)     Anything herein to the contrary 
notwithstanding, if an Event of Default has occurred with respect to Tenant 
which remains uncured following the expiration of any applicable notice and 
cure period, either at the time Tenant exercises the Option to Extend or on 
the commencement date of the Extension Period, then Landlord shall have, in 
addition to all of Landlord's other rights and remedies provided in this 
Lease, the right to terminate the Option 


                                       45

<PAGE>

to Extend upon thirty (30) days written notice to Tenant (with Tenant having 
failed to cure the default during such thirty (30) day period).

                  (b)      In the event the Option to Extend is exercised in 
a timely fashion, this Lease shall be extended for an additional five (5) 
years upon all of the terms and conditions of this Lease; provided, that, the 
Base Expense Year and Base Tax Year shall be adjusted to the calendar year in 
which each Option to Extend is effective (however, if the Option to Extend is 
effective during the last three (3) months of a calendar year, the Base 
Expense Year and Base Tax Year shall be the next calendar year); and provided 
further that, the Base Monthly Rent and additional rent for such Extension 
Period shall be adjusted to equal ninety-seven percent (97%) of the "Fair 
Market Rent" for each floor of the Premises and provided further that there 
shall be no tenant improvement allowance and, upon the exercise of the second 
Option to Extend, no further option to extend the Lease Term. For purposes 
hereof, "Fair Market Rent" shall mean the prevailing gross rental rate per 
annum per square foot as of the date six (6) months prior to the commencement 
of the Extension Period, including, without limitation, base rent, additional 
rent and all other monetary payments (including base rent increases and 
step-ups) agreed to be paid by new tenants generally for similar space in a 
condition (including the state of build out) and location (within the 
Building and any comparison buildings) comparable to each floor of the 
Premises in comparable buildings for five (5) year terms, pursuant to new 
leases entered into by such other tenants, and considering any rental 
abatement and any other similar concessions granted in connection with new 
leases for such comparable space (including tenant improvement allowances and 
other similar items but excluding the payment of any leasing commissions in 
comparable transactions).

                  (c)      On or before the date that is nine (9) months 
prior to the commencement of the Extension Period, Landlord shall notify 
Tenant in writing of Landlord's proposed Fair Market Rental for the term of 
the Extension Period, based on the provisions of this Section above. Within 
thirty (30) days after receipt of such notice from Landlord, Tenant shall 
have the right either to (i) accept Landlord's statement of Fair Market Rent 
as the Fair Market Rental for the Extension Period, or (ii) elect to 
arbitrate Landlord's estimate of Fair Market Rent, such arbitration to be 
conducted pursuant to the provisions hereof. Failure on the part of Tenant to 
require arbitration of Fair Market Rent within thirty (30) such day period 
shall constitute acceptance of the Fair Market Rental for the Extension 
Period, as proposed by Landlord. If Tenant elects arbitration, the 
arbitration shall be concluded as expeditiously as reasonably possible with 
the goal of being concluded within ninety (90) days after the date of 
Tenant's election. To the extent that arbitration has not been completed 
prior to commencement of the Extension Period, Tenant shall pay Base Monthly 
Rental, additional rent and all other charges in an amount equal to the Fair 
Market Rent proposed by Landlord, and the Base Monthly Rental, additional 
rent and all other charges shall be adjusted, if necessary, once the Fair 
Market Rent is ultimately determined by arbitration. Should the monthly 
installments of Base Monthly Rental, additional rent and all other charges as 
adjusted for the period following the completion of such arbitration exceed 
the amount previously paid by Tenant for such period, Tenant shall pay the 
entire difference to Landlord within thirty (30) days following delivery of 
written demand. Should the monthly installments of Base Monthly Rental, 
additional rent and all other charges as adjusted following completion of 
such arbitration be less than the amount previously paid by 


                                       46

<PAGE>

Tenant for such period, Landlord shall credit such difference against the 
next installment(s) of Base Monthly Rental coming due. Upon determination of 
the Fair Market Rent for the Extension Period (whether by mutual agreement or 
by arbitration), the parties shall enter into an amendment to this Lease 
memorializing such determination.

                  (d)      In the event of arbitration, the judgment or the 
award rendered in any such arbitration may be entered in any court having 
jurisdiction and shall be final and binding between the parties. The 
arbitration shall be conducted and determined in the City and County of San 
Francisco in accordance with the then prevailing rules of the American 
Arbitration Association or its successor for arbitration of commercial 
disputes except to the extent that the procedures mandated by said rules 
shall be modified as follows:

                           (i)      Tenant shall make demand for arbitration 
in writing within thirty (30) days after service of Landlord's determination 
of Fair Market Rent given as provided above, specifying therein the name and 
address of the person to act as the arbitrator on its behalf. The arbitrator 
shall be qualified as a real estate appraiser with at least five (5) years 
experience or a real estate broker with at least ten (10) years experience 
and otherwise familiar with the Fair Market Rent of office space in the 
above-described area who would qualify as an expert witness over objection to 
give opinion testimony addressed to the issue in a court of competent 
jurisdiction. Failure on the part of Tenant to make a proper demand in a 
timely manner for such arbitration shall constitute a waiver of the right 
thereto. Within fifteen (15), days after the service of the demand for 
arbitration, Landlord shall give notice to Tenant, specifying the name and 
address of the person designated by Landlord to act as arbitrator on its 
behalf who shall be similarly qualified. If Landlord fails to notify Tenant 
of the appointment of its arbitrator, within or by the time above specified, 
then the arbitrator appointed by Tenant shall be the arbitrator to determine 
the issue.

                           (ii)     In the event that two (2) arbitrators are 
chosen pursuant to the provisions of this Section, the arbitrators so chosen 
shall, within fifteen (15) days after the second arbitrator is appointed, 
appoint a third arbitrator, who shall be a competent and impartial person 
with qualifications similar to those required of the first two (2) 
arbitrators pursuant to subparagraph (d)(1). In the event the two (2) 
arbitrators are unable to agree upon such appointment within ten (10) days 
after expiration of said fifteen (15) day period, the third arbitrator shall 
be selected by the parties themselves, if they can agree thereon, within a 
further period of fifteen (15) days. If the parties do not so agree, then 
either party, on behalf of both, may request appointment of such a qualified 
person by the then Chief Judge of the United States District Court having 
jurisdiction over the City and County of San Francisco, acting in his private 
and not in his official capacity, and the other party shall not raise any 
question as to such Judge's full power and jurisdiction to entertain the 
application for and make the appointment. The third arbitrator shall decide 
the dispute if it has not previously been resolved by following the procedure 
set forth below.

                           (iii)    Where an issue as to Fair Market Rent 
cannot be resolved by settlement between the parties during the course of 
arbitration, the issue shall be resolved by the third arbitrator in 
accordance with the following procedure. The arbitrator selected by each of 


                                       47

<PAGE>

the parties shall state in writing his or her determination of the Fair 
Market Rent supported by the reasons therefor with counterpart copies to each 
party. The arbitrator shall arrange for a simultaneous exchange of the 
determination of Fair Market Rent. The role of the third arbitrator shall be 
to select which of the two proposed determinations of Fair Market Rent most 
closely approximates his or her determination of Fair Market Rent. The third 
arbitrator shall have no right to propose a middle ground or any modification 
of either of the two proposed determinations of Fair Market Rent. The 
resolution he or she chooses as most closely approximating his or her 
determination shall constitute the decision of the arbitrators and be final 
and binding upon the parties.

                           (iv)     In the event of a failure, refusal or 
inability of any arbitrator to act, his or her successor shall be appointed 
by him, but in the case of the third arbitrator, his or her successor shall 
be appointed in the same manner as provided for appointment of the third 
arbitrator. The arbitrators shall decide the issue within fifteen (15) days 
after the appointment of the third arbitrator. Any decision in which the 
arbitrator appointed by Landlord and the arbitrator appointed by Tenant 
concur shall be binding and conclusive upon the parties. Each party shall pay 
the fee and expenses of its respective arbitrator and both shall share the 
fee and expenses of the third arbitrator. The attorneys' fees and expenses of 
counsel for the respective parties and of witnesses shall be paid by the 
respective party engaging such counsel or calling such witnesses.

                           (v)      The third arbitrator shall have the right 
to consult experts and competent authorities to obtain factual information or 
evidence pertaining to a determination of Fair Market Rent, but any such 
consultation shall be made in the presence of both parties with full right on 
their part to cross-examine. The third arbitrator shall render his or her 
decision in writing with counterpart copies to each party. The third 
arbitrator shall have no power to modify the provisions of this Lease.

                  (e)      The Option to Extend granted to Tenant pursuant to 
this Section shall be personal to Xoom.com, Inc. and any Affiliate, and such 
right shall not inure to the benefit of any assignee or subtenant of 
Xoom.com, Inc., except to an Affiliate.

         52.      RIGHT OF FIRST REFUSAL.

                  (a)      Tenant shall have a continuing right of first 
refusal with respect to any contiguous space in the Building of ten thousand 
(10,000) square feet or greater as measured by the ANSI/BOMA Z65.1-1996 
standards that becomes available during the term of the Lease, excluding any 
space on the ground floor of the Building (the "Refusal Space"), subject to 
the existing rights of existing tenants to the Refusal Space. Provided that 
no Event of Default has occurred which has not been cured, if Landlord shall 
receive an offer to lease any portion of the Refusal Space, which offer 
Landlord shall desire to accept, Landlord shall give written notice of the 
said offer to Tenant ("Landlord's Refusal Notice"). The Landlord's Refusal 
Notice shall set forth in reasonable detail the terms of the offer, including 
a description of the space, the Base Monthly Rental (including escalations 
thereof), condition of the space (i.e., as is, building standard construction, 
tenant improvement allowances), taxes, maintenance costs and other 
pass-throughs, term and any other material terms of the offer. Within ten 
(10) days of receiving 


                                       48

<PAGE>

Landlord's Refusal Notice, Tenant may elect, by written notice to Landlord, 
to accept the Refusal Space upon the terms and conditions stated in the 
Landlord's Refusal Notice. Tenant's failure to make a timely election to 
accept the specified space shall be deemed a rejection of the Refusal Space. 
Upon Tenant's rejection or deemed rejection of the Refusal Space, Landlord 
shall be free to accept the offer to lease and lease the space to a third 
party pursuant to the terms thereof. Upon Tenant's acceptance of the Refusal 
Space, the parties shall prepare and execute an amendment incorporating the 
Refusal Space into the Lease subject to all of the terms, covenants, and 
conditions herein, except as modified by the terms of the offer. The right 
contained in this Section is personal to Xoom.com, Inc. and its Affiliates, 
and such right shall not inure to the benefit of any assignee or subtenant of 
Xoom.com, Inc., except for its Affiliates and such right shall be subject to 
the provisions of Section 18.

                  (b)      Tenant's rights under this Section are subject and 
subordinate to and only to the rights of the existing tenants of the Building 
which currently have expansion rights, rights of first refusal or rights of 
first negotiation with respect to space on the Refusal Space. A list of said 
existing tenants is set forth on SCHEDULE 1 attached hereto and made a part 
hereof.

         Notwithstanding the foregoing, Landlord shall have the right to 
negotiate amendments to the Lease of any tenant in the Building to provide 
for an extension of said tenant's expiration of Lease Term for a reasonable 
period of time to facilitate said tenant's vacation of its Premises.

         53.      PARKING.

                  (a)      Tenant shall lease two (2) parking stalls in the 
Building's parking garage (the "Parking Garage") in connection with the 
8th Floor, an additional two (2) parking stalls in connection with the 
9th Floor, an additional (two) parking stalls in connection with the 
19th Floor, an additional four (4) parking stalls in connection with the 
12th and 13th Floors, an additional six (6) parking stalls in connection with 
the 20th and 21st Floors and an additional two (2) parking stalls in 
connection with the 22nd Floor, for an aggregate total of eighteen (18) 
parking stalls (the "Parking Stalls"). If Tenant leases any additional full 
floor space in the Building, Tenant shall be granted the option to lease up 
to two (2) additional parking stalls for each additional full floor space.

                  (b)      Tenant shall execute the standard form parking 
lease for the Parking Garage with Landlord's third-party contractor (the 
"Garage Operator") within ten (10) days after mutual execution of the Lease 
(the "Parking Lease"). The lease term for a Parking Stall(s) shall commence 
on the Term Commencement Date of the floor to which the Parking Stall(s) is 
attributable. Tenant's use of the Parking Stalls shall subject to all other 
terms and conditions contained in the Parking Lease, including without 
limitation the then-current monthly rental rate per parking stall, as the 
same may be adjusted from time to time by Landlord's third-party contractor. 
Landlord agrees that Tenant, to the extent Tenant has a Parking Garage 
monthly pass, shall have access to the Parking Garage twenty-four (24) hours 
per day, seven (7) days a week. From time to time during the Term, Tenant 
shall be entitled to decrease (on thirty (30) days' prior notice to the third 
party parking operators with a copy to Landlord) or increase (on three (3) 


                                       49

<PAGE>

months' prior notice to such third party parking operator with a copy to 
Landlord) its number of parking spaces up to the maximum number of Parking 
Stalls specified above.

         54.      BICYCLE PARKING.

                  (a)      Landlord shall cooperate to provide Tenant access 
to bicycle parking in the Parking Garage, subject to the rights of the Garage 
Operator under the terms of its lease for the Parking Garage. Any additional 
compliance with applicable codes, regulations and law required as a result of 
such bicycle parking shall be Tenant's obligation, including, but not limited 
to fees and expenses in connection therewith.

                  (b)      If Tenant provides bicycle parking in Tenant's 
Premises, all bicycles are required to enter to and from the Building through 
the Parking Garage. Tenant and Tenant's employees, agents or contractors may 
only bring bicycles to and from the Premises via the freight elevator.

                  (c)      In the event that Tenant or Tenant's employees, 
agents or contractors bring bicycles to and from Tenant's Premises through 
the lobby areas of the Building, as opposed to through the Parking Garage and 
the freight elevator, Landlord shall provide written notice of such activity 
to Tenant ("Bicycle Violation Notice"). After the fifth Bicycle Violation 
Notice in any consecutive twelve (12) month period, Tenant shall be required 
to reimburse Landlord for the cost of providing a security guard in the lobby 
area in order to enforce Tenant's obligations under this Section. In the 
event that a security guard is required pursuant to this Section, Landlord 
and Tenant shall review the necessity for such guard after twelve (12) months 
after the security guard is first required.

         55.      INTERNAL FIRE STAIRS.  Tenant shall have the right to use 
the internal stair cases and internal fire-stairs in the Building for travel 
between the floors in the Premises, subject to any applicable governmental 
law, regulation or code related restriction. Tenant shall be responsible for 
any and all costs in connection with the installation of access code key pads 
on each floor and all code related expenses if any.

         56.      DEDICATED ELEVATOR.  Landlord shall provide Tenant with 
access to one elevator in the annex portion of the Building that exclusively 
services and provides direct access to the floors on which the Premises are 
located, including, but not limited to the 22nd Floor. Notwithstanding 
anything to the contrary contained herein, in the event that Tenant occupies 
less than one hundred thousand (100,000) rentable square feet in the 
Building, Tenant shall no longer be entitled to an elevator that exclusively 
services Tenant's Premises. For purposes of this Section 56, space shall be 
deemed "occupied" by Tenant if, and only if, such space is leased to Tenant 
and, such space is not subject to a sublease or assignment by Tenant or any 
other form of occupancy agreement between Tenant and any third party.

         57.      YEAR 2000.  Landlord agrees that Landlord shall pay all 
costs necessary to correct any problems, and will cause such problems to be 
corrected, in the operation of the operating systems in the Building 
resulting from any deficiencies in the computer software of the Building to 
convert to dates after January 1, 2000. All such costs shall be excluded from 
Expenses.


                                       50

<PAGE>

         IN WITNESS WHEREOF, the parties have executed this Lease on the
respective dates indicated below:

TENANT:                                   LANDLORD:

Xoom.com, Inc., a                         OAIC Bush Street, LLC,
Delaware corporation                      a Delaware limited liability company

By: /s/ Chris Kitze                       By:  /s/ Gregory Breskin
   ----------------------------              ------------------------------
Name:   Chris Kitze                       Name:    Gregory Breskin
     --------------------------               -----------------------------
Its:    Chairman                          Its:     Vice President
    ---------------------------               -----------------------------

Date of Execution:   8/9/99               Date of Execution: Aug. 9, 1999
                  -------------                             --------------

By: /s/ John Harbottle                    By:     /s/ Christine Reich
   -----------------------------             ---------------------------------
Name:   John Harbottle                    Name:       Christine Reich
     ---------------------------               -------------------------------
Its:    CFO                               Its:        President
    ----------------------------              --------------------------------



                                   51
<PAGE>


                                    EXHIBIT A
 
                            DIAGRAMS OF FLOOR PLANS 
                           FOR 8TH, 9TH, 12TH, 13TH, 
                        19TH, 20TH, 21ST, AND 22ND FLOORS




                                       A-1

<PAGE>


                                    EXHIBIT B

                              RULES AND REGULATIONS

         1.       The sidewalks, halls, passages, exits, entrances, shopping
malls, elevators, escalators and stairways of the Building shall not be
obstructed by any of the tenants or used by them for any purpose other than for
ingress to and egress from their respective premises. The halls, passages,
exits, entrances, shopping malls, elevators, escalators and stairways are not
for the general public, and Landlord shall in all cases retain the right to
control and prevent access thereto of all persons whose presence in the judgment
of Landlord would be prejudicial to the safety, character, reputation and
interests of the Building and its tenants, provided that nothing herein
contained shall be construed to prevent such access to persons with whom any
tenant normally deals in the ordinary course of its business, unless such
persons are engaged in illegal activities. No tenant and no employee or invitee
of any tenant shall go upon the roof of the Building except such roof or portion
thereof as may be contiguous to the premises of a particular tenant and may be
designated in writing by Landlord as a roof deck or roof garden area; provided
that, so long as Tenant remains in occupancy of the 22nd Floor, the loggia area
on the 22nd Floor shall be designated a roof garden area for Tenant's exclusive
use.

         2.       No sign, placard, picture, name, advertisement or notice
visible from the exterior of any tenant's premises shall be inscribed, painted,
affixed or otherwise displayed by any tenant on any part of the Building without
the prior written consent of Landlord. Landlord will adopt and furnish to
tenants general guidelines relating to signs inside the Building on the office
floors. Each tenant shall conform to such guidelines, but may request approval
of Landlord for modifications, which approval will not be unreasonably withheld.
All approved signs or lettering on doors shall be printed, painted, affixed or
inscribed at the expense of the Tenant by a person approved by Landlord, which
approval will not be unreasonably withheld. Material visible from outside the
Building will not be permitted.

         3.       The Premises shall not be used for the storage of merchandise
held for sale to the general public or for lodging; provided that, the Premises
may be used for the incidental sale of merchandise to Tenant's employees of up
to Twenty-Five Thousand Dollars ($25,000) per year, subject to the rights of
other current and future tenants in the Building and subject to Tenant's
compliance with all applicable laws, including, without limitation, zoning laws,
with respect thereto. No cooking shall be done or permitted by any tenant on the
premises, except that use by the tenant of food and beverage vending machines
and Underwriters' Laboratory approved microwave ovens and equipment for brewing
coffee, tea, hot chocolate and similar beverages shall be permitted, provided
that such use is in accordance with all applicable federal, state and city laws,
codes, ordinances, rules and regulations.


                                     B-1
<PAGE>


         4.       No tenant shall employ any person or persons other than
Landlord's janitorial service for the purpose of cleaning the premises, unless
otherwise approved by Landlord; provided, that, Tenant may contract for
additional janitorial services, subject to Landlord's reasonable approval
thereof. No person or persons other than those approved by Landlord shall be
permitted to enter the Building for the purpose of cleaning the same. No tenant
shall cause any unnecessary labor by reason of such tenant's carelessness or
indifference in the preservation of good order and cleanliness. Janitor service
will not be furnished on nights when rooms are occupied after 9:30 p.m. unless,
by prior arrangement with Landlord, service is extended to a later hour for
specifically designated rooms.

         5.       Landlord will furnish each tenant, free of charge, with two
keys to each door lock in its premises. Landlord may make a reasonable charge
for any additional keys. No tenant shall have any keys made. No tenant shall
alter any lock or install a new or additional lock or any bolt on any door of
its premises without the prior consent of Landlord. The tenant shall in each
case furnish Landlord with a key for any such lock. Each tenant, upon the
termination of its tenancy, shall deliver to Landlord all keys to doors in the
Building which shall have been furnished to the tenant.

         6.       The freight elevator shall be available for use by all tenants
in the Building, subject to such reasonable scheduling as Landlord in its
discretion shall deem appropriate. The persons employed to move such equipment
in or out of the Building must be acceptable to Landlord. Landlord shall have
the right to prescribe the weight, size and position of all equipment,
materials, furniture or other property brought into the Building. Heavy objects
shall, if considered necessary by Landlord, stand on wood strips of such
thickness as is necessary to properly distribute the weight. Landlord will not
be responsible for loss of or damage to any such property from any cause, and
all damage done to the Building by moving or maintaining such property shall be
repaired at the expense of the tenant.

         7.       No tenant shall use or keep in the premises or the Building
any kerosene, gasoline or inflammable or combustible fluid or material other
than limited quantities thereof reasonably necessary for the operation or
maintenance of office equipment, or, without Landlord's prior approval, use any
method of heating or air conditioning other than that supplied by Landlord.

         8.       No tenant shall use or keep or permit to be used or kept any
foul or noxious gas or substance in the premises, or permit or suffer the
premises to be occupied or used in a manner offensive or objectionable to
Landlord or other occupants of the Building by reason of noise, odors or
vibrations, or interfere in any way with other tenants or those having business
therein.


                                   B-2
<PAGE>


         9.       Landlord reserves the right to exclude from the Building
between the hours of 6 p.m. and 7 a.m. and at all hours on Saturdays, Sundays
and legal holidays all persons who do not present a pass signed by Landlord to
the Building. Landlord will furnish passes to persons for whom any tenant
requests the same in writing. Each tenant shall be responsible for all persons
for whom it requests passes and shall be liable to Landlord for all acts of such
persons. Landlord shall in no case be liable for damages for any error with
regard to the admission to or exclusion from the Building of any person. In the
case of invasion, mob, riot, public excitement or other circumstances rendering
such action advisable in Landlord's opinion, Landlord reserves the right to
prevent access to the Building during the continuance of the same by such action
as Landlord may deem appropriate.

         11.      The directories of the Building, located in the two lobby
areas, will be provided for the display of the name and location of tenants and
a reasonable number of the principal officers and employees of tenants (based on
a pro rata share between all of the tenants in the Building, the denominator of
which shall be the total directory space available in the two lobby areas), and
Landlord reserves the right to exclude any other names therefrom. Tenant shall
have the right to directory space in both of the lobby area directories, but in
no event shall Tenant have more than its pro rata share of directory space. Any
additional name which a tenant desires to have added to the directory shall be
subject to Landlord's approval and may be subject to a charge therefor.

         12.      No curtains, draperies, blinds, shutters, shades, screens or
other coverings, hangings or decorations shall be attached to, hung or placed
in, or used in connection with any exterior window in the Building without the
prior consent of Landlord. If consented to by Landlord, such items shall be
installed on the office side of the standard window covering and shall in no way
be visible from the exterior of the Building.

         13.      Messenger services and suppliers of bottled water, food,
beverages, and other products or services shall be subject to such reasonable
regulations as may be adopted by Landlord. Landlord may establish a central
receiving station in the Building for delivery and pick-up by all messenger
services, and may limit delivery and pick-up at tenant premises to Building
personnel.

         14.      Each tenant shall see that the doors of its premises are
closed and locked and that all water faucets or apparatus, cooking facilities
and office equipment (excluding office equipment required to be operative at all
times) are shut off before the tenant or its employees leave the premises at
night, so as to prevent waste or damage, and for any default or carelessness in
this regard the tenant shall be responsible for any damage sustained by other
tenants or occupants of the Building or Landlord. On multiple-tenancy floors,
all tenants shall keep the doors to the Building corridors closed at all times
except for ingress and egress.


                                    B-3
<PAGE>


         15.      The toilets, urinals, wash bowls and other rest room
facilities shall not be used for any purpose other than that for which they were
constructed, no foreign substance of any kind whatsoever shall be thrown
therein, and the expense of any breakage, stoppage or damage resulting from the
violation of this rule shall be borne by the tenant who, or whose employees or
invitees, shall have caused it.

         16.      Except with the prior consent of Landlord, no tenant shall
sell, or permit the sale at retail, of newspapers, magazines, periodicals,
theater tickets or any other goods or merchandise to the general public in or on
the premises, nor shall any tenant carry on, or permit or allow any employee or
other person to carry on, the business of stenography, typewriting or any
similar business or from the premises for the service or accommodation of
occupants of any other portion of the Building, nor shall the premise of any
tenant be used for manufacturing of any kind, or any business or activity other
than that specifically provided for in such tenant's lease.

         17.      No tenant shall install any antenna, loudspeaker, or other
device on the roof or exterior walls of the Building.

         18.      There shall not be used in any portion of the Building, by any
tenant or its invitees, any hand trucks or other material handling equipment
except those equipped with rubber tires and side guards unless otherwise
approved by Landlord.


         19.      Each tenant shall store its refuse within its premises. No
material shall be placed in the refuse boxes or receptacles if such material is
of such nature that it may not be disposed of in the ordinary and customary
manner of removing and disposing of refuse in the City and County of San
Francisco without being in violation of any law or ordinance governing such
disposal. All refuse disposal shall be made only through entryways and elevators
provided for such purposes and at such times as Landlord shall designate.

         20.      Canvassing, peddling, soliciting, and distribution of
handbills or any other written materials in the Building are prohibited, and
each tenant shall cooperate to prevent the same.

         21.      The requirements of the tenants will be attended to only upon
application by telephone or in person at the office of the Building. Employees
of Landlord shall not perform any work or do anything outside of their regular
duties unless under special instructions from Landlord.

         22.      Landlord may waive any one or more of these Rules and
Regulations for the benefit of any particular tenant or tenants, but no such
waiver by Landlord shall be construed as a wavier of such Rules and Regulations
in favor of any other tenant or tenants, nor prevent Landlord from thereafter
enforcing any such Rules and Regulations against any or all of the tenants of
the Building.

         23.      These Rules and Regulations are in addition to, and shall not
be construed to in any way modify or amend, in whole or in part, the terms,
covenants, agreements and conditions of any lease of premises in the Building.


                                      B-4
<PAGE>


         24.      Landlord reserves the right to make such other and reasonable
rules and regulations as in its judgment may from time to time be needed for the
safety, care and cleanliness of the Building, and for the preservation of good
order therein.






                                      B-5
<PAGE>


                                    EXHIBIT C

                     Work Letter and Construction Agreement

                  THIS AGREEMENT supplements the Lease dated for reference 
purposes only as of August 13, 1999 (the "Lease") executed concurrently 
herewith by OAIC BUSH STREET, LLC, a Delaware limited liability company, as 
Landlord, and Xoom.com, Inc., a Delaware corporation , as Tenant.

         1.       GENERAL.

                  (a)      The purpose of this Work Letter and Construction 
Agreement ("Work Letter") is to set forth how the Tenant Work (as defined 
below) in the Premises (as defined in the Lease) are to be designed and 
constructed, who will pay for the design and construction of the Tenant Work, 
and the time schedule for completion of the Tenant Work.

                  (b)      Except as otherwise defined in this Work Letter, all
capitalized terms utilized in this Work Letter shall have the meanings set forth
in the Lease.

                  (c)      The provisions of the Lease, except where clearly
inconsistent or inapplicable to this Work Letter, are incorporated into this
Work Letter.

                  (d)      Except for the Tenant Work and Base Building Work (as
defined below) to be constructed pursuant to this Work Letter, Tenant accepts
the Premises in their "AS IS" condition and acknowledges that it has had an
opportunity to inspect the Premises and the Building prior to signing the Lease
and finds them to be in satisfactory condition. Notwithstanding anything to the
contrary in the preceding sentence, Landlord hereby assumes full responsibility,
at its sole cost, for the removal, encapsulation or other maintenance of
asbestos which is encountered during the construction of Part I of the Base
Building Work and the Tenant Work, provided that the decision to remove,
encapsulate or perform other maintenance of such Hazardous Materials shall be
made at Landlord's sole discretion and Landlord shall notify Tenant in writing
upon substantial completion of Part I of the Base Building Work of the
location(s) of encapsulated Hazardous Materials.

         2.       PREPARATION OF PLANS; SELECTION OF DESIGNER/ARCHITECT.

                  (a)      Tenant shall have the right to engage the services 
of SMP/SHG Incorporated as Tenant's space planner ("Tenant's Space Planner") 
and as Tenant's architect ("Tenant's Architect") for purposes of the Work 
Letter, including the design and initial space planning of each respective 
floor of the Premises which design shall address the tenant improvements, 
exclusive of the Base Building Work, to be initially installed in each floor 
of the Premises pursuant to this Work Letter (such tenant improvements are 
referred to herein as the "Tenant Work"). Tenant and Tenant's Space Planner 
shall take such action as is reasonably necessary and otherwise shall 
cooperate with Landlord's architect, RMW Architects ("Landlord's Architect"), 
in Tenant's Space Planner's preparation of a "hard line space/pricing plan" 
for each floor of the Premises (collectively, the "Space Plan"), which shall 
contain all of the information on SCHEDULE 1, attached hereto and made a part 
hereof. Tenant's Space Planner 


<PAGE>


shall complete and deliver for Landlord's review (i) an initial draft of the 
Space Plan for the 12th Floor, 13th Floor, 19th Floor, 20th Floor and 21st 
Floor, (ii) an initial draft of the Space Plan for the 22nd Floor, and (iii) 
in the case of either an initial Sublessee Build Out or a Tenant Build Out 
(as these terms are defined in Section 3 of the Lease) on the 8th Floor and 
9th Floor, an initial draft of the Space Plan for the 8th Floor and 9th Floor 
after the expiration of the Availability Notice Period (as defined in Section 
3 of the Lease). Landlord, within ten (10) business days after its receipt of 
the initial draft of a Space Plan for a particular floor in the Premises, 
shall provide Tenant's Space Planner with its written approval or disapproval 
thereof (with a statement of the specific reasons therefor in the event of 
any such disapproval). Tenant's Space Planner, within five (5) business days 
after receipt of Landlord's response, shall produce a final Space Plan for 
said floor that shall reflect any comments/corrections proposed by Landlord.

                  (b)      After Landlord's approval of the final Space Plan for
each respective floor of the Premises, Tenant's Architect shall have prepared
and shall have submitted the same to Landlord or its representative for its
review and approval, an initial draft of engineered mechanical and electrical
drawings and architectural working drawings, which show all doors, light
fixtures, electrical outlets, telephone outlets and other improvements to the
respective floor of the Premises beyond the demolition, asbestos abatement,
remediation and/or other maintenance (as set forth in SCHEDULE 2), to the extent
not already completed, and shell and core improvements to be provided by
Landlord as described in SCHEDULE 2 attached hereto (such demolition, asbestos
abatement and/or remediation and shell and core improvements are referred to
herein as the "Base Building Work"), as well as all wall finishes and floor
coverings (collectively, the "Tenant's Plans"). Landlord, within five (5)
business days after its receipt of the initial draft of the Tenant's Plans for a
particular floor in the Premises, shall provide Tenant's Architect with its
written approval or disapproval thereof (with a statement of the specific
reasons therefore in the event of such disapproval). Tenant's Architect shall
produce final Tenant's Plans for said floor of the Premises that shall reflect
any comments/corrections proposed by Landlord, and shall deliver four (4) copies
of the same to Landlord and Tenant for their final approval. All mechanical,
electrical and plumbing related design work in connection with the Tenant Work
must be completed by a consultant designated or approved in writing by Landlord
in Landlord's sole discretion.

                  (c)      The parties acknowledge and agree that the Tenant
Work shown on the Tenant's Plans must (i) be compatible with the Base Building
Work and the design, construction and equipment of the Building, (ii) comply
with all applicable laws, rules, regulations and ordinances, including, without
limitation, the provisions of the American with Disabilities Act, 42 U.S.C.
Section 12101 et. seq. and any governmental regulations with respect thereto
(the "ADA"), Title 24 of the California Administrative Code ("Title 24") and
other similar federal, state and local laws and regulations, including, without
limitation, the requirements under the ADA for the purposes of "public
accommodations" (as that term is used in the ADA) and (iii) be approved by
Landlord.

                  (d)      The term "Tenant Work" shall mean all improvements,
standard or special, shown on the Tenant's Plans. Tenant shall be responsible
for the suitability for the Tenant's needs and business of the design and
function of all the Tenant Work. Landlord's review and approval of any plans or
specifications shall not constitute, and Landlord shall not be deemed to have
made, a representation or warranty as to the compliance of the Tenant Work 


                                       2
<PAGE>


with any and all applicable state and local laws, statutes, codes, rules or 
regulations including regulations or procedures promulgated by Landlord (the 
"Laws") or as to the suitability of the Premises, or the Tenant Work for 
Tenant's needs. Accordingly, notwithstanding the fact that any plans are 
reviewed and/or approved by Landlord or its architect, engineers and 
consultants, and notwithstanding any advice or assistance which may be 
rendered to Tenant by Landlord or Landlord's architect, engineers and 
consultants, Landlord shall have no liability whatsoever in connection 
therewith and shall not be responsible for any omissions or errors contained 
in such plans.

                  (e)      Notwithstanding anything to the contrary contained
herein, in the event that there is any portion of the Tenant Work which Landlord
will require Tenant to remove at the end of the Lease Term, Landlord shall
notify Tenant in writing of such at the time that Landlord reviews the initial
draft of the Tenant's Plans for a particular floor pursuant to Section 2(b)
above. At the end of the Lease Term (as the same may be extended under the terms
of the Lease), Tenant shall remove said Tenant Work at Tenant's sole cost and
expense and repair and restore the Premises to their condition at the
commencement of the Lease.

         3.       BASE BUILDING WORK AS CONSTRUCTION BY LANDLORD.

                  (a)      Promptly after the full execution and delivery of
this Lease by Landlord and Tenant, Landlord shall proceed to complete the Base
Building Work in each floor of the Premises; provided that Landlord shall
proceed to complete the Base Building Work on the 8th Floor and 9th Floor
promptly after the current tenant vacates said floors or, in the event Tenant
elects to sublease the 8th Floor and/or 9th Floor pursuant to Section 3 of the
Lease, after such subtenant vacates said floor(s). The "Base Building Work"
shall consist of only the items (the cost of which shall not be deducted from
the Tenant Improvement Allowance as hereafter defined) set forth in SCHEDULE 2.
As set forth on SCHEDULE 2 the Base Building Work shall be divided into Part I
and Part II. Part I of the Base Building Work shall be completed by Landlord
prior to the Premises Delivery Date for the applicable floor. Part II of the
Base Building Work shall be completed by Landlord concurrently with the
completion of the Tenant Work for the applicable floor, provided that Landlord
shall use reasonable efforts to not interfere with the completion of the Tenant
Work.

                  (b)      Landlord shall give Tenant or shall cause its space
planner, architect or management company to give Tenant notice of the date on
which Part I of the Base Building Work is substantially completed with respect
to a particular floor. Tenant shall have three (3) business days following said
notice, to inspect said Base Building Work and supply Landlord with a written
list (the "Tenant Part I List") setting forth material objections with respect
to said Base Building Work, which list shall be subject to Landlord's reasonable
approval. In the event that no such Tenant Part I List is provided by Tenant
within said three (3) business day period, Tenant shall be deemed to have
accepted the Part I of Base Building Work for the particular floor. Landlord
shall use commercially reasonable efforts to complete all of the items on the
Tenant Part I List, as reasonably approved by Landlord, as expeditiously as
possible. Following Landlord's Architect's certification that all items which
are required to be completed in connection with the Part I of the Base Building
Work have been completed for said floor, Part I of the Base Building Work for
the particular floor shall be deemed "Substantially Complete", 


                                      3

<PAGE>

and Landlord shall have no further obligation with respect to completion of 
Part I of the Base Building Work on said floor.

         (c)     Upon Substantial Completion of Part I of the Base Building 
Work for a particular floor in the Premises, Landlord shall deliver said 
floor, Part I of the Base Building Work and any additional completed Base 
Building Work on said floor to Tenant (the "Premises Delivery Date"), and 
Tenant shall accept said floor, Part I of the Base Building Work and any 
additional completed Base Building Work on said floor from Landlord in their 
presently existing, "as-is" condition. The Premises Delivery date for the 
19th Floor shall be the date of the mutual execution of the Lease (the "19th 
Floor Premises Delivery Date"); the Premises Delivery date for the 12th and 
13th Floors shall be on or before September 1, 1999 (the "12th and 13th 
Floors Premises Delivery Date"); the Premises Delivery date for the 20th and 
21st Floors shall be on or before October 1, 1999 (the "20th and 21st Floors 
Premises Delivery Date"), and; the Premises Delivery date for the 22nd Floor 
shall be on or before June 1, 2000 (the "22nd Floor Premises Delivery Date"). 
With respect to the 8th and 9th Floor, in the case of a Sublessee Build Out 
on either the 8th Floor or 9th Floor, the Premises Delivery Date shall be on 
or before the expiration of the Availability Notice Period (as defined in 
Section 3 of the Lease). In the case of an initial Tenant Build Out on the 
8th Floor or 9th Floor, the Premises Delivery Date shall be on or before six 
(6) weeks after the expiration of the Availability Notice Period. Each 
Premises Delivery Date referenced above is subject to delay by an Event of 
Force Majeure (as defined below)

         (d)     Prior to the completion by Tenant of all Tenant Work on a 
particular floor and the occurrence of the Term Commencement Date for each 
floor in the Premises, subject to an Event of Force Majeure, Landlord shall 
substantially complete all Base Building Work for said floor. Landlord shall 
give Tenant or shall cause its space planner, architect or management company 
to give Tenant notice of the date on which the Base Building Work is 
substantially completed with respect to a particular floor. Tenant shall have 
three (3) business days following said notice, to inspect said Base Building 
Work and supply Landlord with a written list (the "Tenant Base Building Work 
List") setting forth material objections with respect to said Base Building 
Work, which list shall be subject to Landlord's reasonable approval. In the 
event that no such Tenant Base Building Work List is provided by Tenant 
within said three (3) business day period, Tenant shall be deemed to have 
accepted the Base Building Work for the particular floor. Landlord shall use 
commercially reasonable efforts to complete all of the items on the Tenant 
Part I List, as reasonably approved by Landlord, as expeditiously as 
possible. Following Landlord's Architect's certification that all items which 
are required to be completed in connection with the Base Building Work have 
been completed for said floor, said Base Building Work shall be deemed 
"Substantially Completed" and Landlord shall have no further obligation with 
respect to completion of the Base Building Work on said floor. Upon 
Substantial Completion of the Base Building Work on a particular floor, 
Tenant shall accept said floor and the Base Building Work on said floor from 
Landlord in their presently existing, "as-is" condition.

         (e)     Any failure of Landlord to attach a cold air equipment into 
the HVAC system servicing the Premises shall not be deemed a breach of 
Landlord's obligation, so long as such attachment is complete by April 1, 
2000, and so long as said failure does not adversely affect the heat and free 
air exchange in the Premises

                                       4
<PAGE>

         4.      CONSTRUCTION.

                 (a)     Promptly after the Tenant's Plans for each 
respective floor in the Premises are approved by Landlord, Tenant shall (i) 
enter into a construction contract, in the form of the contract attached 
hereto as SCHEDULE 3 (the "OAIC Construction Contract"), with a contractor 
reasonably satisfactory to Landlord and chosen from a list of approved 
Contractors supplied by Landlord (the "Contractor"), pursuant to which the 
Tenant Work shall be constructed, (ii) obtain or cause to be obtained all 
necessary building permits and other governmental approvals in connection 
with the Tenant Work, and (iii) promptly proceed with due diligence to cause 
to be constructed and installed, as soon as reasonably practicable, 
consistent with industry custom and practice, the Tenant Work indicated on 
the Tenant's Plans. Landlord will provide to Tenant's Architect path of 
travel drawings to the Premises only, wet sealed by Landlord's Architect 
suitable for permitting. Landlord shall not be responsible for any delays in 
the approval of the Tenant's Plans or the issuance of necessary permits and 
approvals. Tenant hereby agrees that neither Landlord nor Landlord's 
consultants shall be responsible for obtaining any building permit or other 
approvals or certificate of occupancy for the Premises and that obtaining the 
same shall be Tenant's responsibility; provided, however, that Landlord shall 
cooperate with Tenant in executing permit applications and performing other 
ministerial acts reasonably necessary to enable Tenant to obtain any such 
permit or certificate of occupancy. No changes, modifications or alterations 
in the Tenant's Plans may be made without the prior written consent of 
Landlord, which consent may not be unreasonably withheld, provided the 
requested change, modification or alteration does not adversely affect the 
Building's structure, systems, equipment, security system or appearance. If 
the requested change, modification or alteration adversely affects the 
Building's structure, systems, equipment, security system or appearance, then 
Landlord may withhold its consent thereto in Landlord's sole discretion.

         (b)     Notwithstanding anything to the contrary contained herein, 
prior to commencing the Tenant Work, Tenant shall obtain one hundred percent 
(100%) performance and labor and material payment bonds, in form and 
substance satisfactory to Landlord, issued by a company acceptable to 
Landlord, naming Landlord as an obligee and issued in respect of the contract 
with the Contractor and each subcontractor.

         (c)     Trash removal in connection with the Tenant Work will be 
done continually at Tenant's cost and expense. No trash, or other debris, or 
other waste may be deposited at any time outside the Premises other than in 
areas which Landlord designates for dumpsters or temporary consolidation of 
trash prior to collection. If Tenant does not deposit its trash in accordance 
with this Section 4(c), Landlord may remove it at Tenant's expense, which 
expense shall equal the cost of removal plus twenty-five percent (25%) of 
such costs as a management fee.

         (d)     Storage of Contractor's construction material, tools and 
equipment shall be confined within the Premises and in areas designated for 
such purpose by the general contractor and approved by Landlord. In no event 
shall any materials or debris be stored outside of the Premises, except as 
otherwise provided herein.

                                       5
<PAGE>


         (e)     Landlord shall have the right to post in a conspicuous 
location on Tenant's Premises, as well as record with the City and County of 
San Francisco, a Notice of Nonresponsibility.

         (f)     Without limiting the generality of the foregoing, any work 
to be performed outside of the Premises shall be coordinated with Landlord, 
and shall be subjected to reasonable scheduling requirements of Landlord, and 
Tenant shall coordinate all after-hours, weekend work and use of the elevator 
with Landlord.

         (g)     During construction of the Tenant Work, there shall be no 
charge for Tenant's or Tenant's space planner's, architect's, contractors' or 
engineers' use of designated elevators, water, electricity, HVAC, or security 
services during Building Hours. In the event that Tenant shall require said 
services after Building Hours there shall be an after hours charge. 
Currently, the costs for HVAC, elevator and security services outside of 
Building Hours, are approximately sixty dollars ($60) per hour, thirty 
dollars ($30) per hour, and thirty-five dollars ($35) per hour, respectively, 
which costs are subject to adjustment by Landlord from time to time in 
Landlord's discretion. In addition, in the event that Tenant shall require 
parking stalls during the construction of the Tenant Work on a particular 
floor, Tenant shall be entitled to enter into the parking agreements 
described in Section 52 of the Lease prior to the Term Commencement Date for 
said floor pursuant to a separate agreement with the third party contractor 
operating the parking garage.

         5.      SUBSTANTIAL COMPLETION AND PUNCH LIST ITEMS.

                 (a)     "Substantial Completion" as used in the Lease and 
this Work Letter with respect to the Tenant Work shall mean that (i) the 
applicable improvements are substantially complete in accordance with the 
requirements of this Work Letter, (ii) the architect designing and 
supervising such improvements has certified that such improvements are 
substantially complete in accordance with the applicable plans and 
specifications and the Landlord's Architect, if different from the design 
architect, shall have concurred in such certification, (iii) to the extent 
applicable the contractor performing such work has issued a notice of 
completion under the applicable contract, (iv) to the extent applicable, a 
temporary certificate of occupancy or other governmental approval has been 
issued in connection with such work. A floor in the Premises may be deemed 
Substantially Complete even though improvements in certain portions of the 
Building outside the Premises have not been fully completed and even though 
Tenant's personal property may have not been installed in the Premises. 
Notwithstanding anything to the contrary contained herein, in no event shall 
the date of Substantial Completion of the Tenant Work for any floor in the 
Premises be later than the Estimated Term Commencement Date for such floor, 
subject to extension due to Landlord Delay or Force Majeure.

         (b)     Within ten (10) business days after Tenant's Architect's 
certification of Substantial Completion for a particular floor of the 
Premises, Landlord shall supply to Tenant a written punch list (the "Tenant 
Work Punch List") setting forth the additional corrective and/or completion 
work with respect to the Tenant Work for said floor which Landlord believes 
is required to be performed pursuant to the Tenant's Plans. In the event that 
no such Tenant Work Punch List is provided by Landlord within said ten (10) 
business day period, Landlord shall be deemed to have accepted the Tenant 
Work for the particular floor. Tenant shall use 


                                       6
<PAGE>

commercially reasonable efforts to complete all of the items on the Tenant 
Work Punch List as expeditiously as possible; and the Tenant Work Punch List 
items shall not be deemed complete until so certified in writing by 
Landlord's Architect.

         (c)     Notice of Completion: Copy of Record Set of Plans. Within 
ten (10) days after completion of construction of the Tenant Work, Tenant 
shall cause a Notice of Completion to be recorded in the office of the 
Recorder of the County of San Francisco in accordance with Section 3093 of 
the Civil Code of the State of California or any successor statute, and shall 
furnish a copy thereof to Landlord upon such recordation. If Tenant fails to 
do so, Landlord may execute and file the same on behalf of Tenant as Tenant's 
agent for such purpose, at Tenant's sole cost and expense. At the conclusion 
of construction, (i) Tenant shall cause the Contractor, (A) to update the 
Tenant's Plans to reflect the completed construction, (B) to certify to the 
best of their knowledge that the "record-set" of mylar as-built drawings 
resulting from such update (which Tenant hereby agrees to have created) are 
true and correct, which certification shall survive the expiration or 
termination of this Lease, and (C) to deliver to Landlord two (2) sets of 
copies of such record set of drawings within ninety (90) days following 
issuance of a certificate of occupancy for the Premises, and (ii) Tenant 
shall deliver to Landlord a copy of all warranties, guaranties, and operating 
manuals and information relating to the improvements, equipment and systems 
in the Premises.

         6.      COST OF DESIGN AND CONSTRUCTION.

                 (a)     Tenant Improvement Allowance. Landlord shall bear 
the cost of all Base Building Work, as set forth in this EXHIBIT C. In 
addition, Landlord shall bear the cost of Tenant Work ("Tenant Work Cost") to 
the extent such cost does not exceed an amount equal to the sum of Forty 
Dollars ($40.00) per square foot of rentable area for the Tenant Work 
allocable to the 8th Floor (a total of $1,009,320), Forty Dollars ($40.00) 
per square foot of rentable area for the Tenant Work allocable to the 9th 
Floor (a total of $1,041,680), Forty Dollars ($40.00) per square foot of 
rentable area for the Tenant Work allocable to the 12th Floor (a total of 
$1,041,640), Forty Dollars ($40.00) per square foot of rentable area for the 
Tenant Work allocable to the 13th Floor (a total of $1,041,360), Ten Dollars 
($10.00) per square foot of rentable area for the Tenant Work allocable to 
the 19th Floor (a total of $241,570), Forty One Dollars ($41.00) per square 
foot of rentable area for the Tenant Work allocable to the 20th Floor (a 
total of $907,043), Forty One Dollars ($41.00) per square foot of rentable 
area for the Tenant Work allocable to the 21st Floor (a total of $768,791), 
and Forty One Dollars ($41.00) per square foot of rentable area for the 
Tenant Work allocable to the 22nd Floor (a total of $750,874) (collectively, 
the "Tenant Improvement Allowance"). In addition, Landlord shall provide 
Tenant with an additional Five Thousand Dollars ($5,000) of Tenant 
Improvement Allowance beyond the total of the amounts set forth above. 
Notwithstanding anything to the contrary contained herein, the Tenant 
Improvement Allowance allocated to the 8th Floor and 9th Floor are subject to 
the provisions set forth in Section 3 of the Lease. In the event that the 
Tenant Improvement Allowance allocable to each floor of the Premises is not 
entirely exhausted by the Tenant Work Cost for the particular floor in the 
Premises, Tenant shall be entitled to apply the remaining Tenant Improvement 
Allowance for such floor towards the Tenant Work Cost of a different floor in 
the Premises. Notwithstanding the foregoing and subject to the provisions of 
Section 7 below, at least eighty percent (80%) of the Tenant Improvement 
Allowance allocated to each floor of the Premises must be used towards the 
Tenant Work Cost on the particular floor to which the allowance is 


                                       7
<PAGE>

allocated. In the event the Tenant Work Cost exceeds the Tenant Improvement 
Allowance, Tenant shall bear the cost of such excess and shall pay such 
excess. Landlord shall retain any and all unused portions of the Tenant 
Improvement Allowance. The Tenant Improvement Allowance shall be only for the 
following items and costs (collectively the "Tenant Improvement Allowance 
Items"):

         (1)     The costs of preliminary space planning, the hard line space 
plan and the Tenant's Plans for the Premises, and the cost of Landlord's 
review thereof;

         (2)     All costs of obtaining building permits and other necessary 
authorizations from all governmental authorities having jurisdiction;

         (3)     The cost of any changes to the Construction Drawings or 
Tenant Work required by Code;

         (4)     Sales and use taxes and fees required under ADA, Title 24 or 
such other similar federal, state or local laws;

         (5)     All other costs, if any, Landlord reasonably anticipates 
Landlord will incur in connection with the construction of the Tenant Work; 
and

         (6)     All direct and indirect costs of procuring and installing 
the Tenant Work in the Premises, including any construction fee for overhead 
and profit, a construction review fee charged by Landlord (i) in connection 
with the 12th, 13th, 19th, 20th, 21st and 22nd Floors in the amount of three 
percent (3%) of the total cost of the design and construction of the Tenant 
Work (to which fee Tenant hereby consents), provided that said fee shall not 
exceed One Hundred Fifty Thousand Dollars ($150,000), and (ii) in connection 
with the 8th Floor and 9th Floor, in the amount of three percent (3%) of the 
total cost of the design and constructions of the Tenant Work (to which fee 
Tenant hereby consents (collectively, the "Construction Review Fee"), and all 
reasonable costs and fees, including without limitation, architect's and 
engineer's fees, incurred by Landlord in its review and approval of the 
preliminary space planning, the hard line space plan and the Tenant's Plans 
for the Premises and any amendments or modifications thereto, which costs and 
fees shall be in addition to the Construction Review Fee. Landlord shall have 
the right to pay itself the Construction Review Fee directly from the Tenant 
Improvement Allowance without further authorization from Tenant.

         (b)     To the extent required under Section 8(b) below, Tenant 
shall bear the cost of any increase in the cost of the design or construction 
of the Tenant Work incurred by reason of (i) any Tenant Delay or (ii) any 
Change Order requested by Tenant or any governmental agency following 
preparation and approval of the final Tenant's Plans.

         7.      DISBURSEMENT OF TENANT IMPROVEMENT ALLOWANCE.

                 (a)     During the construction of the Tenant Work, Landlord 
shall make monthly disbursements of the Tenant Improvement Allowance for 
Tenant Improvement Allowance Items for the benefit of Tenant and shall 
authorize the release of monies for the benefit of Tenant as follows:


                                       8
<PAGE>

         (b)     MONTHLY DISBURSEMENTS. On or before the first day of each 
calendar month, as determined by Landlord, during the construction of the 
Tenant Work (or such other date as Landlord may designate), Tenant shall 
deliver to Landlord: (i) a request for payment of the "Contractor," as that 
term is defined in Section 4(a) of this Work Letter, approved by Tenant, in a 
form to be provided by Landlord, showing the schedule, by trade, of 
percentage of completion of the Tenant Work in the Premises, detailing the 
portion of the work completed and the portion not completed; (ii) invoices 
from (i) the Contractor and (ii) all subcontractors, laborers, materialmen 
and suppliers used by Tenant or Contractor (together with the Contractor, 
"Tenant's Agents"), for labor rendered and materials delivered to the 
Premises; (iii) executed mechanic's lien releases from all of Tenant's Agents 
which shall comply with the appropriate provisions, as reasonably determined 
by Landlord, of California Civil Code Section 3262(d); (iv) a check payable 
to Landlord in the amount of Tenant's Share (as defined in Section 7(d) 
below) of the particular amount of the payment requested by the Contractor, 
(v) the information and documentation set forth on SCHEDULE 4 attached 
hereto, and (vi) all other information reasonably requested by Landlord ((i), 
(ii), (iii), (iv), (v) and (vi) are collectively referred to as a "Complete 
Payment Request"). Tenant's request for payment shall be deemed Tenant's 
acceptance and approval of the work furnished and/or the materials supplied 
as set forth in Tenant's payment request. Thereafter, provided that Tenant 
has fulfilled each and every covenant in this Work Letter to date, and Tenant 
is not in default under the terms of this Work Letter or Lease, Landlord 
shall deliver a check to Tenant made jointly payable to Contractor and Tenant 
in payment of the lesser of: (A) the amounts so requested by Tenant, less a 
ten percent (10%) retention (the aggregate amount of such retentions to be 
known as the "FINAL RETENTION"), and (B) the balance of any remaining 
available portion of the Landlord's Allowance (not including the Final 
Retention), provided that Landlord does not dispute any request for payment 
based on non-compliance of any work with the Plans, or due to any substandard 
work, or for any other reason. Landlord's payment of such amounts shall not 
be deemed Landlord's approval or acceptance of the work furnished or 
materials supplied as set forth in Tenant's payment request. Payment shall be 
made to Tenant within thirty (30) days after Landlord's receipt of a Complete 
Payment Request.

         (c)     FINAL RETENTION. Subject to the provisions of this Work 
Letter, a check for the Final Retention payable jointly to Tenant and 
Contractor shall be delivered by Landlord to Tenant provided the following 
conditions have been satisfied: (i) the construction of the Tenant Work has 
been completed, (ii)Tenant has delivered to Landlord properly executed 
mechanics lien releases in compliance with both California Civil Code Section 
3262(d)(2) and either Section 3262(d)(3) or Section 3262(d)(4) from Tenant's 
Agents or any other person or entity entitled to file a mechanic's lien, 
(iii) Landlord has determined that no substandard work exists which adversely 
affects the mechanical, electrical, plumbing, heating, ventilating and air 
conditioning, life-safety or other systems of the Building, the curtain wall 
of the Building, the structure or exterior appearance of the Building, or any 
other tenant's use of such other tenant's leased premises in the Building, 
(iv) Tenant has delivered to Landlord a certificate of occupancy for the 
Premises, (v) Tenant has not done and has not permitted anything to be done 
that would affect the coverage of any performance or labor and material 
payment bonds required pursuant to Section 4(b) above, (vi) the information 
and documentation set forth on SCHEDULE 4 attached hereto, (vii) Tenant 
delivers to Landlord a certificate, in a form reasonably acceptable to 
Landlord, certifying that the construction of the Tenant Work in the Premises 
has been 


                                       9
<PAGE>

substantially completed, and (viii) Tenant has complied with all of the other 
terms of the Work Letter, including, without limitation, Section 7(b).

         (d)     FINAL COSTS. Prior to the commencement of the construction 
of the Tenant Work, and after Tenant has accepted all bids for the Tenant 
Work, Tenant shall provide Landlord with a detailed breakdown, by trade, of 
the final costs to be incurred or which have been incurred, as set forth more 
particularly in Sections 6(a)(1) - (6), above, in connection with the design 
and construction of the Tenant Work to be performed by or at the direction of 
Tenant or the Contractor, which costs form a basis for the amount of the 
Contract (the "FINAL COSTS"). Thereafter, in connection with each payment 
requested by Tenant pursuant to Section 7(a) above, Tenant shall pay a 
fraction (the "Tenants Share") of such payment, which fraction shall have the 
Final Costs less the Tenant Improvement Allowance and the Construction Review 
Fee as the numerator and the Final Costs as the denominator. By way of 
example, if Tenant Improvement Allowance were $1,000 and the Final Costs were 
$1,200, Tenant's share would be 1/6. In the event that, after the Final Costs 
have been delivered by Tenant, to Landlord, the costs relating to the design 
and construction of the Tenant Work shall change, any additional costs 
necessary to such design and construction in excess of the Final Costs, shall 
be paid by Tenant to Landlord immediately or at Landlord's option, Tenant 
shall make payments for such additional costs out of its own funds, but 
Tenant shall continue to provide Landlord with the documents described in 
Section 7(a) of this Work Letter, above, for Landlord's approval, prior to 
Tenant paying such costs.

         (e)     OTHER TERMS. Landlord shall only be obligated to make 
disbursements from the Tenant Improvement Allowance to the extent costs are 
incurred by Tenant for Tenant Improvement Allowance Items and disbursement of 
the Landlord's Allowance shall be subject to the provisions of paragraphs 
7(b) and (c) above.

         8.      CHANGES AND DELAYS.

                 (a)     Tenant may request any change, addition or 
alteration in the Tenant Work as shown on the final approved Tenant's Plans 
(a "Change Order") by delivery of a written request therefor and complete 
working drawings showing the proposed change, addition or alteration to 
Landlord. Landlord shall not unreasonably withhold its consent to any such 
Change Order, provided the requested change does not adversely affect the 
Building's structure, systems, equipment, security system or appearance. If 
the requested change adversely affects the Building's structure, systems, 
equipment, security system or appearance, then Landlord may withhold its 
consent to such Change Order in Landlord's sole discretion. Following receipt 
of such request, Landlord shall promptly give Tenant a written description of 
the changes in such Change Order, if any, required for approval thereof by 
Landlord. The standards and conditions of Landlord's approval for Tenant's 
Plans shall also apply to Change Orders.

         (b)     "Tenant Delay" shall include, but not be limited to, any 
delay in the Rent Commencement Date for each respective floor of the Premises 
or in the completion of the Tenant Work or Base Building Work resulting from 
(i) a request of Tenant to delay the same, (ii) Tenant's failure to comply 
with the provisions of this Work Letter, including failure to provide 
information or give approvals within the time periods specified herein and 
failure to pay any sums payable by Tenant within the time periods specified 
herein, (iii) Tenant's default under 


                                       10
<PAGE>

Section 14(c) hereof, (iv) any other act or omission of Tenant, (iv) any 
additional time, as reasonably determined by Landlord, required for ordering, 
receiving, fabricating and/or installing items of material or other 
components of the Tenant Work, including, without limitation, millwork, which 
unreasonably delay Substantial Completion of the Tenant Work and which are 
not used for construction of Building standard tenant improvement work in the 
remainder of the Building, (v) the submission by Tenant of a request for any 
Change Order following preparation and approval of the Tenant's Plans, (vi) 
any additional time, as reasonably determined by Landlord, required for 
implementation of any Change Order with respect to the Tenant Work, or (vii) 
any delay caused by Tenant's Space Planner. Notwithstanding the foregoing 
provisions of this Section 8(b), a Tenant Delay shall not include any delay 
resulting from a Landlord Delay or a Force Majeure Event. In the event that a 
Tenant Delay occurs, Tenant shall immediately pay to Landlord as additional 
rent the total costs and any expenses occasioned by such delay, including, 
without limitation, any costs and expenses attributable to increases in labor 
or materials or incurred by Landlord to review and approve a Change Order. 
Landlord must give Tenant written notice of claims of Tenant Delay within 
five (5) days of the occurrence of the event on which such Tenant Delay claim 
is based. If such notice is not provided within the said five (5) day period, 
Landlord shall has no right to claim a Tenant Delay for any period prior to 
five (5) days prior to the date on which such notice is given.

         (c)     "Landlord Delay" shall be any delay in the completion of the 
Tenant Work resulting from (i) a request of Landlord to delay the same, (ii) 
Landlord requirement of any Change Order to the Tenant Work following 
commencement of the Base Building Work and any additional time required for 
implementation of such Change Order, (iii) Landlord's failure to comply with 
the provisions of this Work Letter, including failure to provide information 
or give approvals within the time periods specified herein and failure to pay 
any sums payable by Landlord within the time periods specified herein, (iv) 
material and unreasonable interference by Landlord, its agents or contractors 
with the completion of the Tenant Work, which interference objectively 
precludes construction of Tenant Work in the Premises by any person, or which 
interference relates to access by Tenant, its agents and contractors to the 
Building and/or the Premises or any Building facilities (including loading 
docks and freight elevators) or service (including temporary power and 
parking areas) during normal construction hours, or the use thereof during 
normal construction hours, (v) Landlord's failure to complete Part I of the 
Base Building Work to Tenant by the designated Premises Delivery Date for a 
particular floor, or (vi) Landlord's failure to complete Part II of the Base 
Building Work to Tenant on or before Landlord's receipt of Tenant's 
Architect's certification of Substantial Completion pursuant to Section 5(b) 
above. Notwithstanding the foregoing, a Landlord Delay shall not include any 
delay resulting from a Tenant Delay or a Force Majeure Event. Tenant must 
give Landlord written notice of claims of Landlord Delay within five (5) days 
of each day on which such Landlord Delay is claimed to have occurred. If such 
notice is not provided within the said five (5) day period, Tenant shall lose 
the right to receive a delay of the Term Commencement Date on a particular 
floor for such day or days. Notwithstanding anything to the contrary 
contained herein, any delay in completion of either Part I or Part II of the 
Base Building Work resulting from the failure of Tenant to deliver those 
plans required pursuant to Section 2 above within a time period so as not to 
impede any design, demolition or construction work to be done by Landlord 
shall not be deemed a Landlord Delay


                                       11
<PAGE>

         (d)     "Force Majeure Event" shall mean any delay in the Base 
Building Work or the Tenant Work caused directly or indirectly, by reason of 
acts of God, governmental restrictions, strikes, labor disturbances, 
shortages of materials or supplies or any other cause or event beyond 
Landlord's or Tenant's reasonable control. Unless any of the causes or events 
listed above permanently renders completion of the Base Building Work or the 
Tenant Work on a particular floor in the Premises impossible or 
impracticable, however, such cause or event shall only suspend the time for 
performance of, and shall not discharge or release the parties from, their 
obligations hereunder.

         9.      INDEMNITY.

                 Tenant's indemnity of Landlord as set forth in Section 14 
of this Lease shall also apply with respect to any and all costs, losses, 
damages, injuries and liabilities related in any way to any act or omission 
of Tenant or Tenant's Agents, or anyone directly or indirectly employed by 
any of them, or in connection with Tenant's non-payment of any amount arising 
out of the Tenant Work and/or Tenant's disapproval of all or any portion of 
any request for payment. Such indemnity by Tenant, as set forth in Section 14 
of this Lease, shall also apply with respect to any and all costs, losses, 
damages, injuries and liabilities related in any way to Landlord's 
performance of any ministerial acts reasonably necessary (i) to permit Tenant 
to complete the Tenant Work, and (ii) to enable Tenant to obtain any building 
permit or certificate of occupancy for the Premises.
  
         10.     REQUIREMENTS OF TENANT'S AGENTS.

                 Each of Tenant's Agents shall guarantee to Tenant and for 
the benefit of Landlord that the portion of the Tenant Work for which it is 
responsible shall be free from any defects in workmanship and materials for a 
period of not less than one (1) year from the date of completion thereof. 
Each of Tenant's Agents shall be responsible for the replacement or repair, 
without additional charge, of all work done or furnished in accordance with 
its contract that shall become defective within one (1) year after the later 
to occur of (i) completion of the work performed by such contractor or 
subcontractors and (ii) the Rent Commencement Date for the floor upon which 
the work was done. The correction of such work shall include, without 
additional charge, all additional expenses and damages incurred in connection 
with such removal or replacement of all or any part of the Tenant Work, 
and/or the Building and/or common areas that may be damaged or disturbed 
thereby. All such warranties or guarantees as to materials or workmanship of 
or with respect to the Tenant Work shall be contained in the Contract or 
subcontract and shall be written such that such guarantees or warranties 
shall inure to the benefit of both Landlord and Tenant, as their respective 
interests may appear, and can be directly enforced by either Tenant covenants 
to give to Landlord any assignment or other assurances which may be necessary 
to effect such right of direct enforcement.

         11.     MEETINGS.

                 Commencing upon mutual execution of the Lease, Tenant shall 
hold weekly meetings at a reasonable time with the Contractor regarding the 
progress of the preparation of Plans and the construction of the Tenant Work, 
which meetings shall be held at a location mutually designated by Landlord 
and Tenant, and Landlord and/or its agents shall receive prior 


                                       12
<PAGE>

notice of, and shall have the right to attend, all such meetings, and, upon 
Landlord's request, certain of Tenant's Agents shall attend such meetings. In 
addition, minutes shall be taken at all such meetings, a copy of which 
minutes shall be promptly delivered to Landlord. One such meeting each month 
shall include the review of Contractor's current request for payment.

         12.     AMERICAN WITH DISABILITIES ACT AND SIMILAR ACTS.

                 Except as set forth in Section 2 of this Work Letter with 
respect to the Base Building Work, Tenant shall reimburse Landlord upon 
demand for any and all costs incurred by Landlord to comply with the 
provisions of the ADA, Title 24 and other similar federal, state and local 
laws and regulations, including, without limitation, any alterations required 
under the ADA for the purposes of "public accommodations" (as that term is 
used in the ADA), and alterations required under the ADA, Title 24 or such 
other similar federal, state or local laws and regulations in any other 
portion of the floor on which the Premises are located or any other portion 
of the Building arising out of Tenant's specific use of the Premises, or any 
aspect of Tenant's Work, other than customary ADA upgrades outside of the 
Premises required in connection with customary and ordinary general office 
uses.

         13.     EARLY ACCESS.

                 Tenant may, with Landlord's written consent which shall be 
granted or withheld in Landlord's reasonable discretion, enter the premises 
prior to the term commencement date of a particular floor in the premises 
solely for the purposes of installing tenant's personal property and 
equipment as long as such entry will not interfere with the orderly 
construction and completion of the premises. Tenant shall notify Landlord of 
its desired time(s) of entry and shall submit for Landlord's approval the 
scope of the work to be performed and the name(s) of the contractor(s) who 
will perform such work. Tenant shall have all applicable insurance and shall 
comply with all building rules and regulations. Tenant hereby indemnifies and 
agrees to protect, defend and hold Landlord, Landlord's property manager, any 
mortgagee, ground lessor or beneficiary of a deed of trust related to the 
premises or the building, and any officers, agents or employees of any 
thereof, from and against any claims, liabilities or causes of action 
(including claims for worker's compensation) of any nature whatsoever, 
together with reasonable attorneys' fees for counsel of Landlord's choice, 
arising out of or in connection with such entry onto the premises or the 
installation of Tenant's personal property or equipment (including but not 
limited to claims of breach of warranty, personal injury or property damage). 
Landlord shall have the right, in Landlord's sole and exclusive discretion, 
to settle, compromise, or otherwise dispose of any and all such suits, claims 
and actions.

         14.     MISCELLANEOUS.

         (a)     Tenant's Representative. Tenant has designated Katherine 
Andreasen as its sole representative with respect to the matters set forth in 
this Work Letter, who shall have full authority and responsibility to act on 
behalf of the Tenant as required in this Work Letter.

         (b)     Landlord's Representative. Landlord has designated Frank 
Miskus as its sole representative with respect to the matters set forth in 
this Work Letter, who, until further 


                                       13

<PAGE>

notice to Tenant, shall have full authority and responsibility to act on
behalf of the Landlord as required in this Work Letter.

          (c)     Tenant's Lease Default. Notwithstanding any provision to
the contrary contained in this Lease, if an event of default as described in
the Lease or this Work Letter has occurred at any time on or before the
Substantial Completion of the Premises, then (i) in addition to all other
rights and remedies granted to Landlord pursuant to the Lease, Landlord shall
have the right to withhold payment of all or any portion of the Tenant
Improvement Allowance and/or Landlord may cause any contractor to cease the
construction of the Premises (in which case, Tenant shall be responsible for
any delay in the Substantial Completion of the Base Building Work and/or the
Tenant Work caused by such work stoppage), and (ii) all other obligations of
Landlord under the terms of this Work Letter shall be suspended until such
time as such default is cured pursuant to the terms of this Lease (in which
case, Tenant shall be responsible for any delay in the Substantial Completion
of the Premises caused by such inaction by Landlord).

          (d)     Merger. Except as expressly set forth in this Work Letter
or in the Lease, Landlord has no other agreement with Tenant and has no other
obligation to do any work or pay any amounts with respect to the Premises.
Any other work in the Premises which may be permitted by Landlord pursuant to
the terms and conditions of the Lease shall be done at Tenant's sole cost and
expense and in accordance with the terms and conditions of the Lease.

          (e)     Applicability of Work Letter. This Work Letter shall not be
deemed applicable to any additional space added to the original Premises at
any time or from time to time, whether by any options under the Lease or
otherwise, or to any portion of the original Premises or any additions
thereto in the event of damage or destruction of the Premises, condemnation
of the Premises, or renewal or extension of the initial term of the Lease,
whether by any options under the Lease or otherwise, unless expressly so
provided in the Lease or any amendment or supplement thereto.

          (f)     Execution in Conjunction with Lease. This Work Letter is
being executed in conjunction with the Lease and is subject to each and every
term and condition thereof, including, without limitation, the limitations of
Landlord's liability set forth therein.


                                       14
<PAGE>

IN WITNESS WHEREOF, the parties have executed this Work Letter on the 
respective dates indicated below:

TENANT:                                     LANDLORD:

Xoom.com, Inc., a                           OAIC Bush Street, LLC,
Delaware corporation                        a Delaware limited liability company

By:  /s/ Chris Kitze                        By:      /s/ Gregory Breskin
    ----------------------------                ------------------------------
Name:    Chris Kitze                        Name:        Gregory Breskin
    ----------------------------                ------------------------------
Its:     Chairman                           Its:         Vice President
    ----------------------------                ------------------------------
Date of Execution:  8/9/99                  Date of Execution:   Aug. 9, 1999
                  --------------                               ---------------
By:  /s/ John Harbottle                     By:    /s/ Christine Reich
    ----------------------------                ------------------------------
Name:    John Harbottle                     Name:      Christine Reich
    ----------------------------                ------------------------------
Its:     CFO                                Its:       President
    ----------------------------                ------------------------------


                                       15
<PAGE>

                                   SCHEDULE 1

                          INFORMATION IN THE SPACE PLAN


         1.       Location and type of all partitions.

         2.       Location and type of all doors. Indicate hardware and provide
                  keying schedule.

         3.       Location and type of glass partitions, windows, and doors.
                  Indicate framing and reference full-height partitions.

         4.       Critical dimensions necessary for construction, with
                  indication of required clearances.

         5.       Location and types of all electrical items: outlets,
                  switches, telephone outlets and lighting.

         6.       Location and type of equipment that will require special
                  electrical requirements. Provide manufacturers'
                  specifications for use and operation, including heat output.

         7.       Location, weight per square foot, and description of any
                  heavy equipment or filing system.

         8.       Requirements for special air-conditioning or ventilation.

         9.       Location and type of plumbing.

         10.      Location and type of kitchen equipment.

         11.      Location, type and color of floor covering, wall covering,
                  paint and finishes.

                                 DETAILS SHOWING

         1.       All millwork with verified dimensions of all equipment to be
                  built in.

         2.       Corridor entrance.

         3.       Bracing or support of special walls, glass partitions, etc.,
                  if desired.

                  If not included with the plans, Tenant's engineer will design
all support or bracing required at Tenant's expense.

                             ADDITIONAL INFORMATION

         1.       Provide Landlord with Title 24 energy calculations with
submittal of the Final Plans.




<PAGE>

                                   SCHEDULE 2

                               BASE BUILDING WORK

Landlord and Tenant acknowledge and agree that no Base Building Work will be
required by Landlord in connection with the 19th Floor

PART I

1.       Demolition of the 8th, 9th, 12th, 13th, 20th, 21st and 22nd floor of 
         the Premises; provided that, in the event that Tenant initially 
         elects a Sublessee Build Out for the 8th and/or 9th Floors pursuant 
         to Section 3 of this Lease, Landlord shall not be required to 
         perform any demolition work on the 8th and/or 9th Floor; provided 
         further that, in the event that Tenant initially elects a Sublessee 
         Build Out for the 8th and/or 9th Floors and later elects to proceed 
         with the Tenant Build Out pursuant to Section 3 of this Lease, 
         Landlord shall have six (6) weeks to complete the demolition on said 
         floor.

2.       As set forth in Section 1(d) of this Work Letter, Landlord shall
         remove, encapsulate or perform other maintenance of asbestos which is
         encountered during the construction of Part I of the Base Building
         Work, excluding the 19th Floor, provided that the decision to remove,
         encapsulate or perform other maintenance of such Hazardous Materials
         shall be made at Landlord's sole discretion. Tenant may request
         additional information with respect to asbestos removal through the
         Building management office.

3.       In connection with the 22nd Floor, Landlord shall perform additional 
         work under this Part I substantially in accordance with the proposed 
         plan set forth on Exhibit A-1 attached hereto (the "22nd Floor 
         Proposed Plan") and the loggia window and door treatment conceptual 
         plan set forth on Exhibit A-2 attached hereto (the "22nd Floor 
         Loggia Window and Door Conceptual Plan").

4.       All exterior windows, transoms and related hardware shall be operable,
         excluding those windows which are permanently sealed.

5.       Landlord shall deliver to Tenant within thirty (30) days of the Lease
         Execution Date, the base Building specifications for the HVAC system.

6.       In connection with the 21st Floor, Landlord shall also demolish the
         existing railing in the former library area.

PART II

1.       Landlord shall provide adequate electrical service, including main 
         breakers and transformers, as required, up to maximum of five (5) 
         watts per square foot.

2.       Landlord shall provide the main sprinkler loop and branch distribution
         for the Premises on an unoccupied basis.



<PAGE>


3.       The Landlord shall supply the existing HVAC loop on the 8th Floor, 9th
         Floor, 12th Floor and 13th Floor and install the HVAC loop on the 20th
         Floor, 21st Floor and 22nd Floor. Tenant shall be responsible for all
         distribution.

4.       Landlord shall provide the main life safety loop on the 8th, 9th, 12th
         Floor, 13th Floor, 20th Floor, 21st Floor, and 22nd Floor, including
         devices as required for unoccupied space.

5.       A men's restroom and women's restroom on each floor of the Premises, 
         excluding the 19th Floor, in a location, with designs and finishes, 
         all designated by Landlord in Landlord's sole discretion, shall 
         comply with Title 24, and ADA as required by the City of San 
         Francisco code.



<PAGE>
                                       
                           EXHIBIT A-1 TO SCHEDULE 2

                       DIAGRAM OF 22ND FLOOR PROPOSED PLAN

<PAGE>

                           EXHIBIT A-2 TO SCHEDULE 2

        DIAGRAM OF 22ND FLOOR LOGGIA WINDOW AND DOOR CONCEPTUAL PLAN

<PAGE>


                                   SCHEDULE 3

                           OAIC CONSTRUCTION AGREEMENT

                                [SEE ATTACHED]

<PAGE>

                            CONSTRUCTION AGREEMENT


                                    BETWEEN


OWNER:


                                      AND


CONTRACTOR:


       CONTRACT NO.:


X  ON CALL                                           SINGLE PROJECT
--                                               ---




JOB/LOCATION:                       ON CALL
              ------------------------------------------------------------------


                                       1

<PAGE>

                            CONSTRUCTION AGREEMENT


           PROJECT NAME: ___________________ (if for single project)


     THIS CONSTRUCTION AGREEMENT (this "Agreement"), is made and entered into 
as of the ____ day of _________, 1998, by and between __________, a _________ 
(the "Owner") and _____________, a ________________ (the "Contractor").


     In consideration of the mutual covenants hereinafter set forth, and 
other good and valuable consideration, the receipt and sufficiency of which 
is hereby acknowledged, the parties hereto agree as follows:


                                   ARTICLE 1
                              CERTAIN DEFINITIONS


     Capitalized terms which are used in this Agreement and not otherwise 
defined in this Agreement shall have the meanings given to such terms in the 
General Conditions. Unless otherwise specified, references herein to numbered 
articles and paragraphs are to those in this Agreement. This Agreement shall 
be referred to throughout the Contract Documents as the "Agreement". The 
following terms shall have the meanings set forth below:


                                       2

<PAGE>

     1.1  "COMMENCEMENT DATE" shall mean the earlier of ____(ON CALL)___ or 
the date fixed in a Notice to Proceed to be delivered by Owner to Contractor 
after the date of this Agreement if this Agreement is for an individual 
project or service. If this Agreement if for continuing (on-call) Work (as 
defined hereafter) on multiple projects or continuing (on-call) services, the 
Commencement Date shall be the date fixed in the job specific Work 
Authorization forms delivered by Owner to Contractor after the date of this 
Agreement. The Commencement Date shall be the date from which any deadlines 
for completion of the Work or portions thereof shall be measured, provided, 
however no notice to proceed and no Commencement Date may become effective 
until after all applicable permits have been issued unless the Contractor, 
any subcontractor, and/or any of their respective agents, representatives, 
suppliers or any other person or entity directly or indirectly employed, 
utilized and/or controlled by any of them are responsible for obtaining the 
applicable permits.

     1.2  "CONTRACT DOCUMENTS" shall mean this Agreement, the General 
Conditions, any special, supplementary or other conditions set forth on 
EXHIBIT B (collectively, "Special Conditions"), the Drawings, the 
Specifications, all Addenda (except portions thereof relating purely to the 
bidding form or bidding procedure), all Modifications and all other documents 
enumerated on EXHIBIT A attached hereto. The Contract Documents collectively 
form the Contract and all are fully a part thereof as if attached to this 
Agreement or repeated herein.

     1.3  "CONTRACT SUM" shall mean: As full compensation for Contractor's 
performance of its Work (as defined hereafter) under this Agreement, Owner 
will pay Contractor in accordance with the terms and conditions of this 
Agreement, only the amount authorized in writing in accordance with the basis 
of compensation and fees noted below; or as agreed to by Owner and 
Contractor. Such compensation shall include all taxes incurred by Contractor 
in its performance of its Work:

          ( ) Lump Sum.  The sum of ___________________ Dollars ($            ),


                                       3

<PAGE>

subject to additions and deductions as provided in the Contract Documents.

          ( ) Hourly Rate as set forth in the attached ADDENDUM 1, subject to 
additions and deductions as provided in the Contract Documents.

          ( ) In accordance with the fees described in ADDENDUM 1, subject to 
additions and deductions as provided in the Contract Documents.

          (X) As detailed on job specific Work Authorization, subject to 
additions and deductions as provided in the Contract Documents.

     1.4  "CONTRACT TIME" shall have the meaning ascribed thereto in 
Section 5.1 below.

     1.5  "GENERAL CONDITIONS" shall mean the General Conditions of the 
Contract for Construction attached hereto as EXHIBIT C.

     1.6  "PROJECT" shall mean for Work at the following location(s): 
_______(ON CALL)_______________________________________________________________ 
unless this Agreement is for continuing (on-call) Work (as defined hereafter) 
on multiple project or continuing (on-call) services in which case the 
Project shall mean the Work at the locations set forth in the job specific 
Work Authorization form.

     1.7  "NATURE OF PROJECT"  this Agreement is for:

          ( ) An individual project or an individual service contract:

                Project or contract name: ________________


                                       4

<PAGE>

                Owner's contract number: _______________

                Owner's assigned job number: ____________

          (X) Continuing (on-call) Work (as defined hereafter) on multiple 
projects, or continuing (on-call) services. Each project or request for Work 
must be individually described in the job specific Work Authorization on the 
Owner approved form, which must include a description of (i) the location(s), 
(ii) scope(s) of Work, (iii) timetables (i.e. Commencement Date, Substantial 
Completion Dates and Milestone Dates), (iv) basis of compensation, and 
(v) Authorization(s) to Proceed on the Owner approved form. The terms and 
conditions of the agreement shall apply separately to each project or 
service. One or more project(s) or service(s) may be in process at any time, 
or during certain periods of time no project or service may be in process.

     1.8  "SUBSTANTIAL COMPLETION DATE" shall be ___(ON CALL)____ if this 
Agreement is for an individual project or service. If this Agreement if for 
continuing (on-call) Work on multiple project or continuing (on-call) 
services, the Substantial Completion Date shall be as set forth in the job 
specific Work Authorization form. In either event, the Substantial Completion 
Date is subject to adjustment in accordance with the Contract Documents.

     1.9  "WORK" shall mean and include the totality of the obligations 
imposed upon the Contractor by this Agreement and by all other provisions of 
the Contract Documents, including, without limitation, the structures to be 
built, the materials, equipment and supplies to be provided and the labor to 
be performed pursuant to the Contract Documents as set forth on Exhibit A 
attached hereto which are incorporated herein by reference.


                                       5

<PAGE>

     1.10  "MILESTONE DATES" shall be as set forth on Exhibit D attached 
hereto unless this Agreement is for continuing (on-call) Work on multiple 
projects or continuing (on-call) services in which case the Milestone Dates 
shall be as set forth in the job specific Work Authorization form.

     1.11  "SCHEDULE OF VALUES" shall allocate the entire Contract Sum among 
the various portions of the Work, generally following the Uniform 
Construction Index (CSI) cost analysis format as set forth on Exhibit J 
attached hereto.


                                   ARTICLE 2
                            PERFORMANCE OF THE WORK


     2.1   The Contractor shall fully perform and complete the Work in 
compliance with the terms and provisions of the Contract. In connection 
therewith, the Contractor shall perform or cause to be performed all actions 
and shall provide and pay for all materials, tools, equipment, supplies, 
labor and professional and non-professional services, and shall perform all 
other acts and supply all other things necessary to fully and properly 
perform and complete the Work pursuant to the Contract Documents.

     2.2   The Contractor shall be solely responsible for the construction 
means, methods, techniques and procedures utilized to perform and complete 
the Work.


                                   ARTICLE 3
                            OWNER'S REPRESENTATIVE


     3.1  The Owner's authorized representative (herein referred to as the 
"Owner's Representative") shall be Ken Kuropatkin; provided, however, that 
the Owner may, without liability to the Contractor, unilaterally amend this 
Article from time to time by designating a 


                                       6

<PAGE>

different person or organization to act as its representative and so advising 
the Contractor in writing, at which time the person or organization so 
designated shall be the Owner's Representative for purposes of the Contract.


                                   ARTICLE 4
                            THE ARCHITECT/ENGINEER


     4.1  The Architect/Engineer for the Project (herein referred to as the 
"A/E" or "Architect") is ___(ON CALL)_____, whose mailing address is 
_______________, _________________ unless otherwise set forth in the job 
specific Work Authorization, if applicable; provided, however, that the Owner 
may, without liability to the Contractor, unilaterally amend this Article 
from time to time by designating a different person or organization to act as 
the A/E and so advising the Contractor in writing, at which time the person 
or organization so designated shall be the A/E for the purposes of the 
Contract.


                                   ARTICLE 5
                      TIME OF COMMENCEMENT AND COMPLETION


     5.1  The Contractor will commence the Work promptly on the Commencement 
Date and shall substantially complete all Work on or before the Substantial 
Completion Date (such period of time is herein referred to as the "Contract 
Time") and in accordance with such interim milestone dates (herein referred 
to as the "Milestones Dates") as may be specified in the Contract Documents. 
The Contract Time and such Milestones Dates are of the essence of the 
Contract.

     5.2  If any Work is performed by the Contractor prior to the execution 
of this Agreement based on receipt of a written Notice to Proceed, all such 
Work performed shall be in accordance with and governed by the Contract 
Documents.


                                       7

<PAGE>

                                   ARTICLE 6
                                 CONTRACT SUM


     6.1  Provided that the Contractor strictly and completely performs all 
of its obligations under the Contract Documents in a timely manner, and 
subject only to additions and deductions by Change Order or as otherwise 
provided in the General Conditions, the Owner shall pay to the Contractor, at 
the times and in the installments hereinafter specified, the Contract Sum, to 
cover the Contractor's profit, general overhead and all costs and expenses of 
any nature whatsoever (including, without limitation, taxes, labor and 
materials), and any increases in said costs and expenses, incurred by the 
Contractor in connection with the performance of the Work, all of which costs 
and expenses shall be borne solely by the Contractor.


                                   ARTICLE 7
                           APPLICATIONS FOR PAYMENT


     7.1  The Contractor shall, on or before the fifth (5th) day of each 
calendar month (the "Payment Application Date"), deliver to the Owner an 
Application for Payment in accordance with the provisions of Article 9 of the 
General Conditions. Each Application for Payment submitted by the Contractor 
shall cover one calendar month, and shall cover a period commencing on the 
first day of the previous month and ending on the last day of the previous 
month. The Schedule of Values shall be used as a basis for the Contractor's 
Applications for Payment and the review thereof by Owner. Each Application 
for Payment shall include the Schedule of Values and be further broken down 
by facility, labor and material, all as required by the Owner.


                                   ARTICLE 8


                                       8

<PAGE>

                      PROGRESS PAYMENTS AND FINAL PAYMENT
                              OF THE CONTRACT SUM


     8.1    Based on the Contractor's Application for Payment, the Approved 
Schedule of Values and the approval of the Application for Payment issued by 
the Owner pursuant to Article 9 of the General Conditions, the Owner shall 
make monthly payments to the Contractor on account of the Contract Sum. Such 
monthly payment shall be made on or before the thirtieth (30th) day after 
receipt by the Owner of the Contractor's Application for Payment, and of all 
documentation, in proper form, to substantiate the amount owed, whichever is 
later; provided, however, that the Owner shall have no obligation to make 
payment as aforesaid if Owner withholds approval thereof as permitted under 
Subparagraph 9.3.1 of the General Conditions or if the Contractor has not 
submitted to the Owner with its Application for Payment all required 
documentation. Each such monthly payment shall be in an amount equal to 
ninety percent (90%) of the net amount allowed the Contractor for labor, 
materials and equipment incorporated or used in the Work through the Payment 
Application Date (or suitably stored at the Job Site and verified by material 
invoice), as indicated in the Owner's approval of the Application for 
Payment, after deducting any sums withheld by the Owner pursuant to the 
Contract Documents and the aggregate of all previous payments to the 
Contractor on account of the Contract Sum. Upon Substantial Completion of the 
Work, as set forth in Subparagraph 1.12 of the General Conditions, the Owner 
shall pay to the Contractor an amount necessary to increase the aggregate 
payments theretofore made to the Contractor on account of the Contract Sum to 
ninety percent (90%) of the Contract Sum, less such retainage as the Owner 
shall determine is necessary for all incomplete Work, unsettled claims or 
other matters for which the Owner is permitted to withhold under the General 
Conditions.

     8.1.1  All monthly payments approved by Owner in accordance with this 
Agreement not paid on or before the thirtieth (30th) day after receipt by the 
Owner of the Contractor's Application for Payment shall accrue interest at 
the rate of Twelve Percent (12%) per year.


                                       9

<PAGE>

     8.2  Final payment, constituting the entire unpaid balance of the 
Contract Sum, shall be paid by the Owner to the Contractor within forty-five 
(45) days after approval by the Owner of the final Application for Payment in 
accordance with the General Conditions; provided, however, that final payment 
shall in no event be due unless and until the Contractor shall have complied 
with all provisions of the Contract Documents, including those contained in 
Subparagraph 9.4.2 of the General Conditions. In addition, defects in the 
Work discovered prior to final payment shall be treated as non-conforming 
Work and shall be corrected by the Contractor prior to final payment and not 
treated as warranty items.


                                   ARTICLE 9
                         CONTRACTOR'S REPRESENTATIONS,
                           WARRANTIES AND COVENANTS


     9.1  The Contractor hereby represents and warrants to the Owner that:

          (a)  Contractor is duly licensed to observe and perform the terms,
     covenants, conditions and other provisions on its part to be observed or
     performed hereunder;

          (b)  Contractor is experienced and skilled in the construction and
     work of the type described in or required by the Contract Documents;

          (c)  All equipment and materials used in connection with the Work
     shall be new (except if otherwise required by the Specifications), and the
     equipment, the materials and the Work shall be in accordance with industry
     standards, free from faults and defects and shall strictly conform to the
     Contract Documents; and


                                       10

<PAGE>

         9.2 The Contractor accepts the contractual relationship established 
between Contractor and the Owner. Contractor shall furnish its best skill and 
judgment and cooperate with the Owner in furthering the interests of the 
Owner. Contractor shall furnish efficient business administration and 
superintendence to perform the Work in a workmanlike manner consistent with 
industry standards and consistent with the Specifications.

         9.3 Contractor hereby represents, warrants and covenants that (i) 
Contractor has provided nothing of material value to any employee, agent or 
independent contractor of Owner or any of its affiliates in connection with 
this Agreement or any other agreement between Contractor and Owner and (ii) 
Contractor shall not at any time provide anything of material value to any 
employee, agent or independent contractor of Owner or any of its affiliates 
in connection with this Agreement or any other agreement between Contractor 
and Owner. Contractor hereby acknowledges and intends that Owner shall rely 
upon Contractor's representations, warranties and covenants contained in this 
Section, and Contractor shall execute a certificate confirming the foregoing 
at Owner's request.

                                   ARTICLE 10
                                   TERMINATION

         10.1 Termination of the Contract by the Owner, with or without 
cause, and by the Contractor are provided for in Article 15 of the General 
Conditions. If the Owner terminates the Contract pursuant to Paragraph 15.2 
of the General Conditions, and the unpaid balance of the Contract Sum exceeds 
the costs and expenses incurred by or on behalf of the Owner in finishing the 
Work, including compensation for any additional architectural, engineering, 
management and administrative services, such excess shall, upon the 
completion of the Work, be paid to the Contractor. If such costs exceed such 
unpaid balance, the Contractor shall pay the difference to the Owner upon 
demand.


                                       11
<PAGE>

                                   ARTICLE 11
                                  MISCELLANEOUS

         11.1 No notice or other communication will be deemed given unless 
sent in any of the manners, and to the persons, specified in this Section. 
All notices and other communications hereunder will be in writing and will be 
deemed given (a) upon receipt if delivered personally (unless subject to 
clause (b)) or if mailed by registered or certified mail, (b) at noon on the 
date after dispatch if sent by overnight courier or (c) upon the completion 
of transmission (which is confirmed by telephone or by a statement generated 
by the transmitting machine) if transmitted by telecopy or other means of 
facsimile which provides immediate or near immediate transmission to 
compatible equipment in the possession of the recipient, in any case to the 
parties at the following addresses or telecopy numbers (or at such other 
address or telecopy number for a party as will be specified by like notice):

if to Contractor:
                                            Attention:


                                            Telecopy Number: (   )
                                            Confirmation Number: (   )
or if to the Owner:
                                            c/o Ocwen Federal Bank FSB
                                            The Forum, Suite 400
                                            1675 Palm Beach Lakes Boulevard
                                            West Palm Beach, FL 33401
                                            Attention:  William H. Stolberg
                                            Telecopy Number:  561 682-8275
                                            Confirmation Number:  561 682-8182


                                       12
<PAGE>

                                            cc:  Secretary
                                            Telecopy Number:
                                                            -------------------
                                            Confirmation Number:
                                                                ---------------

                cc Owner's Representative:  Compass Management and Leasing, Inc.
                                            1 Front Street, Suite 1200
                                            San Francisco, CA 94111
                                            Attention:
                                            Telecopy Number:
                                            Confirmation Number:

         11.2 Contractor will not use Owner's or any of Owner's affiliates' 
names, marks, logos or other designations for any reason (including, without 
limitation, advertising, publicity and promotional materials) without Owner's 
express prior written consent in each instance, and all such names, marks, 
logos and other designations of Owner will at all times be and remain the 
sole and exclusive property of Owner. The foregoing notwithstanding, 
Contractor will have the right to include representations of the design of 
the Project, including photographs of the exterior and interior, among 
Contractor's promotional materials. The Owner agrees to provide professional 
credit for the Contractor on the construction sign and in the promotional 
materials for the Project, if any, in a form chosen by Owner.

         11.3 No payment made under this Agreement shall be conclusive 
evidence of the performance of this Agreement by Contractor, either wholly or 
in part, and no payment will be construed to be an acceptance of, or to 
relieve Contractor of liability for, Contractor's failure to perform its 
duties and obligations under this Agreement in accordance with the terms of 
this Agreement.


                                       13
<PAGE>

         11.4 This Agreement and the respective rights and obligations of the 
parties hereto will be governed and construed in all respects in accordance 
with the laws of the state where the Job Site is located, without regard to 
its conflicts of laws provisions.

         11.5 Contractor will at all times be an independent contractor and 
nothing in this Agreement will at any time be construed so as to create the 
relationship of employer and employee, principal and agent, partnership or 
joint venture as between Contractor and Owner. Contractor acknowledges that 
it will have no authority to bind Owner to any contractual or other 
obligation.

         11.6 All rights available to either party under this Agreement, or 
allowed it by law or equity, are and will be cumulative and may be exercised 
separately or concurrently and from time to time without waiver of any other 
remedies. No party hereto will be deemed to waive any right, power or 
privilege under this Agreement unless such waiver is expressed in a written 
instrument signed by the waiving party. The failure of any party hereto to 
enforce any provision of this Agreement will in no way be construed as a 
waiver of such provision or a right of such party to thereafter enforce such 
provision or any other provision of this Agreement.

         11.7 The Contract constitutes the entire agreement of the parties 
hereto with respect to the subject matter hereof and supersedes all prior 
agreements, understandings, representations, proposals, discussions and 
communications, whether oral or in writing, between the parties with respect 
to the subject matter of this Agreement. EXHIBIT A, EXHIBIT B, EXHIBIT C, 
EXHIBIT D, EXHIBIT E, EXHIBIT F, EXHIBIT G, EXHIBIT H, EXHIBIT I, EXHIBIT J, 
ADDENDUM 1, AND ADDENDUM 2 to this Agreement are each hereby incorporated 
into this Agreement in their entirety by this reference.


                                       14
<PAGE>

         11.8 The Contract may not be amended or modified in any manner 
except by a written agreement executed by each of the parties hereto.

         11.9 If any provision of the Contract is held to be invalid or 
unenforceable for any reason, such provision will be conformed to prevailing 
law rather than voided, if possible, in order to achieve the intent of the 
parties and, in any event, the remaining provisions of this Agreement will 
remain in full force and effect and will be binding upon the parties hereto.

         11.10 This Agreement may be executed in any number of counterparts, 
each of which when so executed and delivered will be deemed an original, but 
all of which will together constitute one and the same agreement.

         11.11 The enumeration and headings contained in this Agreement are 
for convenience of reference only and will not control or affect the meaning 
or interpretation of any of the provisions of this Agreement.

         11.12 In its performance of its duties and obligations under the 
Contract, Contractor and its employees and subcontractors will at all times 
fully comply with all federal, state and local laws, statutes, ordinances, 
rules, regulations and orders.

         11.13 THE PARTIES HERETO HEREBY KNOWINGLY AND VOLUNTARILY WAIVE ANY 
RIGHT WHICH EITHER OR BOTH OF THEM WILL HAVE TO RECEIVE A TRIAL BY JURY WITH 
RESPECT TO ANY CLAIMS, CONTROVERSIES OR DISPUTES WHICH WILL ARISE OUT OF THIS 
AGREEMENT OR THE SUBJECT MATTER HEREOF. ANY SUCH CLAIMS OR CONTROVERSIES OR 
DISPUTES SHALL BE HEARD BY A JUDGE.


                                       15
<PAGE>

         11.14 Unless the context of this Agreement otherwise clearly 
requires, (i) references in this Agreement to the plural include the 
singular, the singular the plural, the masculine the feminine, the feminine 
the masculine and the part the whole and (ii) the word "or" will not be 
construed as exclusive and the word "including" will not be construed as 
limiting.

         11.15 All employees of Contractor, whether performing their 
functions at Contractor's place of business, the Job Site or elsewhere, 
shall, at all times, be and remain employees of Contractor and shall not be 
employees of Owner. Contractor shall pay all wages, salaries and other 
amounts due to its employees who perform on Contractor's behalf under this 
Agreement or any other agreement between Owner and Contractor, and Contractor 
shall be solely responsible for all reports, payments and other obligations 
respecting such employees, including, without limitation, those obligations 
relating to social security, income tax withholding, unemployment 
compensation and workers' compensation.


                                       16
<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed the day and year first above written.

                                   OWNER:


                                   By:    Compass Management and Leasing, Inc.
                                          Its authorized representative
                                   By:
                                          ------------------------------------
                                   Name:
                                          ------------------------------------
                                   Title:
                                          ------------------------------------


                                   CONTRACTOR:

                                   By:
                                          ------------------------------------
                                   Name:
                                          ------------------------------------
                                   Title:
                                          ------------------------------------


                                       17
<PAGE>

                                LIST OF EXHIBITS

<TABLE>
<CAPTION>

      <C>                        <S>
         EXHIBIT A -                List of Contract Documents
         EXHIBIT B -                Special Conditions
         EXHIBIT C -                General Conditions of the Contract for
                                    Construction
         EXHIBIT D -                Milestone Dates
         EXHIBIT E -                Contractor's Guarantee to Owner
         EXHIBIT F -                Payment Bond
         EXHIBIT G -                Performance Bond
         EXHIBIT H -                Change Order Form
         EXHIBIT I -                Project Real Estate - Legal Description
         EXHIBIT J -                Schedule of Values
         ADDENDUM 1 -               Hourly Rate or Fee Schedule, if applicable
         ADDENDUM 2 -               Work Authorization Form
</TABLE>


                                       18
<PAGE>

                                    EXHIBIT A

                           LIST OF CONTRACT DOCUMENTS


                                       19
<PAGE>

                                    EXHIBIT B

                               SPECIAL CONDITIONS


C.  Materials purchased by Owner

Certain Materials specified in the Contract Documents and to be incorporated
into the Work have been purchased by Owner. The cost for loading, transporting
and unloading these Materials at the Project site are included in the Contract
Sum. The list of materials purchased by the Owner is bound within this Agreement
and made apart of the Contract Documents between Owner and Contractor.


                                       20
<PAGE>

                                    EXHIBIT C

                            GENERAL CONDITIONS OF THE
                            CONTRACT FOR CONSTRUCTION


The General Conditions of the Contract for Construction is bound within this
Agreement and made apart of the Contract Documents between Owner and Contractor.


                                       21

<PAGE>

================================================================================

                               GENERAL CONDITIONS



                                     OF THE



                            CONTRACT FOR CONSTRUCTION



================================================================================


<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<S>      <C>                                                                                                       <C>
                                    ARTICLE 1
                                   DEFINITIONS
1.1      The Contract.............................................................................................  1
1.2      The Owner................................................................................................  1
1.3      The Owner's Representative...............................................................................  1
1.4      The Contractor...........................................................................................  1
1.5      Subcontractor; Sub-subcontractor.........................................................................  2
1.6      The Job Site.............................................................................................  2
1.7      Work; Contract Time; Contract Sum........................................................................  2
1.8      Provide..................................................................................................  2
1.9      Plans....................................................................................................  2
1.10     Specifications...........................................................................................  2
1.11     Substantial Completion...................................................................................  2

                                    ARTICLE 2
                             THE CONTRACT DOCUMENTS
2.1      Execution, Intent and Interpretations....................................................................  2
2.2      Copies Furnished, Ownership..............................................................................  3
2.3      No Oral Waiver...........................................................................................  3

                                    ARTICLE 3
                                      OWNER
3.1      Easements................................................................................................  4
3.2      Access...................................................................................................  4

                                    ARTICLE 4
                           THE OWNER'S REPRESENTATIONS
4.1      Contractual Relationships................................................................................  4
4.2      Role.....................................................................................................  4

                                    ARTICLE 5
                                   CONTRACTOR
5.1      Supervision and Construction Procedures..................................................................  4
5.2      Materials and Equipment..................................................................................  5
5.3      Warranty.................................................................................................  5
5.4      Taxes; Fees and Licenses; Royalties and Patents..........................................................  5
5.5      Compliance with Laws.....................................................................................  6
5.6      Tests....................................................................................................  6
5.7      Drawings.................................................................................................  6
5.8      Binders..................................................................................................  7
5.9      Cleaning.................................................................................................  7
5.10     Start Up.................................................................................................  7
5.11     General..................................................................................................  7

                                    ARTICLE 6
                                 SUBCONTRACTORS
6.1      General..................................................................................................  7
6.2      Award of Subcontracts....................................................................................  7
6.3      Subcontractual Relations.................................................................................  7

                                    ARTICLE 7
                               SEPARATE CONTRACTS
7.1      Owner's Right to Award Separate Contracts................................................................  8
7.2      Mutual Responsibility of Contractors.....................................................................  8

                                    ARTICLE 8


                                      ii
<PAGE>

                                      TIME
8.1      Definitions..............................................................................................  9
8.2      Progress and Completion; Scheduling......................................................................  9
8.3      Delays, Extensions of Time and Overtime.................................................................. 10
8.4      Temporary Suspension of Work............................................................................. 12

                                    ARTICLE 9
                             PAYMENTS AND COMPLETION
9.1      Application for Payment; Passage of Title................................................................ 12
9.2      Approvals of Applications for Payment.................................................................... 12
9.3      Payments Withheld; Owner's Right to Make Direct Payments for Work; Failure of Payment.................... 13
9.4      Substantial Completion and Final Payment................................................................. 14
9.5      Beneficial Use and Occupancy; Partial Substantial Completion............................................. 15

                                   ARTICLE 10
                       PROTECTION OF PERSONS AND PROPERTY
10.1     Responsibility for Safety and Health..................................................................... 16
10.2     Protection of Work and Property; Responsibility for Loss................................................. 17
10.3     Emergencies.............................................................................................. 17
10.4     Cleanup.................................................................................................. 18
10.5     Owner's Standards........................................................................................ 18

                                   ARTICLE 11
                                   INSURANCE
11.1     Insurance Provided by Owner.............................................................................. 18
11.2     Contractor's Insurance................................................................................... 18
11.3     Schedule of Insurance Coverages.......................................................................... 19
11.4     Contractors Equipment Policy............................................................................. 20
11.5     Release of Waiver........................................................................................ 20
11.6     Claims Made Policies..................................................................................... 20
11.7     Indemnification.......................................................................................... 21

                                   ARTICLE 12
                               CHANGES IN THE WORK
12.1     Change Orders and Directives............................................................................. 21
12.2     Changes Requiring an Increase in Contract Sum............................................................ 22
12.3     Changes Requiring a Decrease in Contract Sum............................................................. 23
12.4     Disputes Regarding Changes............................................................................... 23
12.5     Audit Rights............................................................................................. 23

                                   ARTICLE 13
                                     CLAIMS
13.1     Claims for Extensions of Contract Time................................................................... 23
13.2     Claims for Increases in Contract Sum..................................................................... 23
13.3     Resolution of Claims..................................................................................... 24
13.4     No Other Claims.......................................................................................... 24
13.5     No Arbitration........................................................................................... 24

                                    ARTICLE 14
                        UNCOVERING AND CORRECTION OF WORK; 
                         OWNER'S RIGHT TO CARRY OUT WORK
14.1     Uncovering of Work....................................................................................... 24
14.2     Correction of Work....................................................................................... 24
14.3     Owner's Right to Carry Out Work.......................................................................... 25
14.4     Acceptance of Defective or Non-Conforming Work........................................................... 25


                                   ARTICLE 15


                                      iii
<PAGE>

                             TERMINATION OF CONTRACT
15.1     Termination by Contractor................................................................................ 26
15.2     Termination by Owner for Cause........................................................................... 26
15.3     Termination by Owner Without Cause....................................................................... 27

                                   ARTICLE 16
                            MISCELLANEOUS PROVISIONS
16.1     Governing Law............................................................................................ 27
16.2     Assignability; Successors and Assigns.................................................................... 27
16.3     Performance and Payment Bonds............................................................................ 27
16.4     Union Agreements......................................................................................... 27
16.5     General.................................................................................................. 28
16.6     Immigration Reform Control Act........................................................................... 28
16.7     Attorney's Fees.......................................................................................... 28

</TABLE>


                                      iv
<PAGE>

                            GENERAL CONDITIONS OF THE
                            CONTRACT FOR CONSTRUCTION

                                    ARTICLE 1
                                   DEFINITIONS

The following terms shall have the meanings set forth below in this Article 
1. Any terms not otherwise defined in these General Conditions shall have the 
meaning given to such terms in the Agreement.

1.1       THE CONTRACT. The Contract for Construction (referred to herein as the
"Contract") is the sum of all Contract Documents. It represents the entire and
integrated agreement between the Owner and the Contractor and supersedes all
prior negotiations, representations, understandings or agreements, either
written or oral. The Contract may be amended or modified only by a Modification.

          1.1.1     CONTRACT DOCUMENTS. The Contract Documents are as defined 
          in the Agreement. The Contract Documents do not include bidding 
          documents, such as the Advertisement or Invitation to Bid, the 
          Instructions to Bidders, sample forms, the Contractor's Bid or 
          portions of Addenda relating to and to the extent that they may 
          relate to any of the bidding documents or bidding procedure.

          1.1.2     ADDENDUM. An Addendum is a written or graphic instrument 
          issued by the Owner prior to the execution of the Agreement which 
          sets forth additions, deletions or other revisions to the Contract 
          Documents or clarifications thereof.

          1.1.3     MODIFICATION. A Modification is any change or 
          modification to the Contract agreed to in writing by Owner and 
          Contractor. A Modification may be accomplished by: (a) a Change 
          Order; (b) a Directive or (c) any other written amendment to the 
          Contract signed by both parties. A Modification may be made only 
          after execution of the Agreement. No Directive shall be construed 
          as a Change Order or other Modification unless it expressly so 
          states.

          1.1.4     CHANGE ORDER. A Change Order is a written Modification 
          executed by both parties (except in the event of a unilateral 
          Change Order as herein provided) and consisting of additions, 
          deletions or other changes to the Contract. A Change Order may be 
          accompanied by and/or may identify additional or revised Drawings, 
          sketches or other written instructions which become and form part 
          of the Contract Documents by virtue of the executed Change Order. 
          Except as otherwise provided in Subparagraph 1.1.5, a change in the 
          Work, or a change in the Contract Time or the Contract Sum shall 
          become the subject of a Change Order.

          1.1.5     DIRECTIVE. A Directive is a written document issued by 
          the Owner and consisting of additions, deletions, clarifications or 
          other written instructions issued by the Owner with respect to the 
          performance of the Work or the activities of the Contractor on the 
          Job Site or the property of the Owner. A Directive may include, but 
          shall not be limited to, a bulletin, an engineering change or other 
          orders or instructions. Directives may become the subject of a 
          Change Order, either singularly or collectively. Directives shall 
          become the subject of a Change Order if they involve a Change in 
          the Work or a change in the Contract Time or the Contract Sum.

1.2       THE OWNER. The Owner is the person or entity identified as such in 
the Agreement. The term "Owner", whenever it appears in the Contract 
Documents, means the Owner and/or the Owner's Representative acting on behalf 
or for the benefit of the Owner (except as otherwise specified in the 
Contract Documents or as the context otherwise requires); provided, however, 
that with respect to any provisions of the Contract which require the 
Contractor to provide insurance for the protection of the Owner or to release 
the Owner from, or waive, any claims the Contractor may have against it, the 
term "Owner" shall mean the Owner and the Owner's Representative, and the 
parent, related, affiliated and subsidiary companies or partnerships of the 
Owner (if any) and the officers, directors, shareholders, agents, employees, 
partners and assigns of each, and shall, to the extent applicable partners, 
include the parent, related, affiliated and subsidiary companies of the 
Owner's Representative and the officers, directors, shareholders, agents, 
employees and assigns of each.

1.3       THE OWNER'S REPRESENTATIVE. The Owner's Representative is the 
person or entity designated from time to time by the Owner to act as its 
representative as identified in Article 3 of the Agreement or the most 
current Modification thereto.

1.4      THE CONTRACTOR. The Contractor is the person or entity identified as 
such in the Agreement. The Contractor shall so designate a sufficient number 
of Project representatives that there shall be at least one authorized 


                                      1
<PAGE>

representative on the Job Site at all times during which the Work is being 
performed including, without limitation, a project manager (herein referred 
to as the "Project Manager") who shall at all times have authority to act (in 
all capacities necessary for the Work) for and bind the Contractor.

1.5       SUBCONTRACTOR; SUB-SUBCONTRACTOR.

          1.5.1     A Subcontractor is a person or entity having a direct 
          contract with the Contractor to perform any of the Work at the Job 
          Site or to supply any materials or equipment to be incorporated in, 
          or utilized in connection with, the Work.

          1.5.2     A Sub-subcontractor is a person or organization having a 
          direct or indirect contract (on any tier) with a Subcontractor to 
          perform any of the Work at the Job Site or to supply any materials 
          or equipment to be incorporated in, or utilized in connection with, 
          the Work.

1.6       JOB SITE. The Job Site shall mean the area in which the Work is to 
be performed and such other areas as may be designated by the Owner for the 
storage of the Contractor's materials and equipment. 

1.7       WORK; CONTRACT TIME; CONTRACT SUM. The Work, the Contract Time and 
the Contract Sum are as defined in the Agreement.

1.8       PROVIDE. Except as the context otherwise requires, the term 
"provide" means to furnish, fabricate, complete, deliver, install and erect, 
including all labor, materials, equipment, apparatus, appurtenances and 
expenses necessary to complete in place, ready for operation or use under the 
terms of the Specifications.

1.9       PLANS  Wherever the words "Plan" or "Plans" are used in the Contract 
Documents, they shall be construed as having the same meaning as Drawing or 
Drawings (as referred to in the Agreement).

1.10      SPECIFICATIONS. The Specifications shall include those referred to 
in the Agreement.

1.11      SUBSTANTIAL COMPLETION. Substantial Completion shall occur when 
Owner, in Owner's reasonable discretion, certifies that all construction is 
sufficiently complete in accordance with the Contract Documents so that the 
Owner may, if it so elects, occupy and use the Work or designated portion 
thereof for the purpose for which it was intended.


                               ARTICLE 2
                        THE CONTRACT DOCUMENTS

2.1       EXECUTION, INTENT AND INTERPRETATIONS

          2.1.1     The Contractor warrants and represents that, in executing 
          the Agreement and undertaking the Work, it has not relied upon any 
          oral inducement or representation by the Owner, the Owner's 
          Representative or any of their officers or agents as to the nature 
          of the Work, the Job Site, the Project conditions or otherwise.

          2.1.2     Execution of the Contract by the Contractor is a 
          representation by the Contractor that the Contact Documents are 
          sufficient to have enabled the Contractor to determine the cost of 
          the Work described therein and that the Contract Documents are 
          sufficient to enable Contractor to construct the Work described 
          therein, and otherwise to fulfill all of its obligations hereunder, 
          including, but not limited to, Contractor's obligation to construct 
          the Work for an amount not in excess of the Contract Sum on or 
          before the date(s) of Substantial Completion for the Work or 
          designated portion(s) thereof established in the Agreement.

               The Contractor further acknowledges and declares that it has 
          visited and, as an experienced and prudent contractor, carefully 
          examined the Job Site, including all existing structures, and is 
          fully familiar with all of the conditions thereon affecting the 
          same. In connection therewith, Contractor specifically represents 
          and warrants to Owner that it has, by careful examination, 
          satisfied itself as to: (a) the nature, location, and character of 
          the Project and the Job Site, including the conditions of the Job 
          Site and all structures and obstructions thereon, both natural and 
          man-made; (b) the nature, location, and character of the general 
          area in which the Project is located, including its climatic 
          conditions, available labor supply and labor costs, and available 
          equipment supply and equipment costs; and (c) the quality and 
          quantity of all materials, supplies, tools, equipment, labor, and 
          professional services necessary to complete the Work in the manner 
          and within the cost and time frame required by the Contract 
          Documents.

               The Contractor further acknowledges that it shall be solely 
          responsible for understanding the location of subsurface lines, 
          cables, pipes and water as well as the conditions and 
          characteristics of all subsoils based upon a careful review, as a 
          prudent and experienced Contractor, of reports as 


                                      2
<PAGE>

          provided by professionals affiliated with the Project, and that it 
          has made all reasonable interpretations, as an experienced and 
          prudent Contractor, of such reports, in combination with a review 
          of the Job Site conditions, to complete the Work as per the 
          Contract Documents.

               In connection with the foregoing, and having carefully 
          examined all Contract Documents, as aforesaid, and having visited 
          the Job Site, the Contractor acknowledges and declares that it has 
          no knowledge of any discrepancies, omissions, ambiguities, or 
          conflicts in said Contract Documents and that if it becomes aware 
          of any such discrepancies, omissions, ambiguities, or conflicts, it 
          will promptly notify Owner and Architect of such matters.

               Further, Contractor recognizes that care is required under 
          urban site construction circumstances with respect to safety, 
          protection of pedestrians, cleanliness of the site, health and 
          other laws, and protection of existing utilities, adjacent streets 
          and property. In arriving at the Contract Sum and the Contract 
          Time, Contractor has, as an experienced and prudent contractor, 
          exercised its best judgment and expertise to include the impact of 
          such circumstances upon the Contract Sum and the Contract Time.

          2.1.3     The Contract Documents include all items necessary for the 
          proper execution and completion of the Work by the Contractor. The 
          Work shall consist of all items specifically included in the 
          Contract Documents as well as additional items of work which an 
          experienced and prudent contractor would include along with that 
          which is specified in order to complete the Work in accordance with 
          the Contract Documents. The Contract Documents are complementary, 
          and what is required by any one Contract Document shall be as 
          binding as if required by all. Contractor acknowledges that any 
          differences between the requirements of the Drawings and the 
          Specifications or any differences noted within the Drawings 
          themselves or within the Specifications themselves and have been 
          referred to the Owner and Architect by Contractor prior to the 
          submission of bids and have been clarified to the  satisfaction of 
          the Contractor. If any such differences or conflicts were not 
          called to the Owner's and Architect's attention prior to submission 
          of bids, the Architect and/or the Owner shall decide which of the 
          conflicting requirements will govern based upon the most stringent 
          of the requirements, and, subject to the approval of the Owner, the 
          Contractor shall perform the Work at no additional cost and/or time 
          to the Owner in accordance with the Architect's and/or Owner's 
          decision. Subject to confirmation or approval by the Owner, large 
          scale Drawings take precedence over smaller scaled Drawings, 
          figured dimensions on the Drawings take precedence over scaled 
          dimensions, and noted items on the Drawings take precedence over 
          graphic representations.

          2.1.4     All discrepancies and ambiguities in the Contract 
          Documents shall be interpreted so as to result in quality and 
          complete performance. Where variances occur between the drawings 
          and the specifications or within either document itself, or between 
          Contract Documents and site conditions, they shall be brought, in 
          writing to the immediate attention of the Architect and the Owner. 
          In case of discrepancies between Contract Documents, the Contractor 
          shall secure written instructions from the Architect and the Owner 
          before proceeding with the Work affected by omissions or 
          discrepancies. The Contractor shall assume full responsibility for 
          proceeding with such work without approval from the Architect and 
          the Owner including, but not limited to, the duty to remove such 
          work and correct any consequences of such removal.

          2.1.5     When more than one material, brand or process is 
          specified for a particular item of Work, the choice shall be the 
          Contractor's. Contractor may, after notifying the Architect and 
          Owner, select the one it considers to be the best. Approval by 
          Architect or Owner of materials, suppliers, processes or 
          Subcontractors does not imply a waiver of any Contract requirements 
          including, without limitation, Contractor's warranty.

2.2       COPIES FURNISHED; OWNERSHIP. All Contract Documents and copies 
thereof furnished by the Owner or the Owner's Representative are and shall 
remain the Owner's property. They are not to be published or used by the 
Contractor on any other project and, with the exception of one complete set 
for the Contractor, are to be returned to the Owner upon completion of the 
Work.

2.3       NO ORAL WAIVER. The provisions of this Contract cannot be amended, 
modified, varied or waived in any respect except by a Modification signed by 
the Owner and the Contractor. The Contractor is hereby given notice that no 
person has authority to orally waive, or to release the Contractor from, any 
of the Contractor's duties or obligations under or arising out of this 
Contract. Any waiver, approval or consent granted to the Contractor shall be 
limited to those matters specifically and expressly stated thereby to be 
waived, approved or consented to and shall not relieve the Contractor of the 
obligation to obtain any future waiver, approval or consent. Despite any 
prior waiver, approval or consent as to any particular matter, the 


                                      3
<PAGE>

Owner may at any time require strict compliance with the Contract Documents 
as to any succeeding obligation respecting the same matter or as to any other 
matter.

                                  ARTICLE 3
                                    OWNER

3.1       EASEMENTS. The Owner shall obtain and pay for any easements 
required for permanent structures.

3.2       ACCESS  The Owner A/E, and governmental inspectors, shall at all 
times have access to the Work at each and every stage of preparation and 
progress. The Contractor shall provide facilities for such access.


                                  ARTICLE 4
                         THE OWNER'S REPRESENTATIONS

4.1       CONTRACTUAL RELATIONSHIPS. Nothing contained in the Contract 
Documents shall create any contractual relationship between the Owner's 
Representative and the Contractor; provided, however, that the Owner's 
Representative shall be deemed to be a third party beneficiary of those 
obligations of the Contractor to the Owner's Representative as imposed by the 
Contract Documents, (including, but not limited to, the Owner's 
Representative's rights pursuant to Paragraph 7.2 and Articles 10 and 11 of 
these General Conditions).

4.2       ROLE  Except as otherwise provided in the Contract Documents, and 
until the Contractor is notified in writing to the contrary, all actions to 
be taken by, all approvals, notices, consents, directions and instructions to 
be given by, all notices and other matters to be delivered to, all 
determinations and decisions to be made by and, in general, all other action 
to be taken by, or given to, the Owner shall be taken, given and made by, or 
delivered or given to, the Owner's Representative in the name of and on 
behalf of the Owner; provided, however, that the Owner (and not the Owner's 
Representative) shall be solely obligated to the Contractor for all sums 
required to be paid by the Owner to the Contractor hereunder. If the Owner's 
Representative is an organization, then it shall, in turn, act through such 
person or persons as it may designate in writing from time to time. Only 
those so designated are authorized to grant on behalf of the Owner any 
approval, consent or waiver with respect to the Contract Documents or the 
Work, or to otherwise act for the Owner in any capacity whatsoever.


                              ARTICLE 5
                             CONTRACTOR

5.1       SUPERVISION AND CONSTRUCTION PROCEDURES

          5.1.1     The Contractor shall supervise and direct the Work using 
          its best skill and attention. The Contractor shall be solely 
          responsible for all construction means, methods, techniques, 
          sequences, coordination, scheduling (subject to Article 8) and 
          procedures for all cleanup and for all safety and weather 
          precautions and programs in connection with the Work.

          5.1.2     The superintendent and project manager selected by the 
          Contractor shall be subject to Owner's approval, which approval 
          will not be unreasonably denied, and shall be approved in writing 
          by Owner. If, for any reason and at any time, the services of the 
          superintendent and/or project manager selected by Contractor and 
          approved by Owner are no longer available, then the Contractor 
          shall not select a substitute superintendent and/or project manager 
          without the prior written consent of the Owner in accordance with 
          this paragraph.

          5.1.3     The Contractor shall be fully responsible to the Owner 
          for the acts and omissions of its employees and of all 
          Subcontractors and Sub-subcontractors and their agents and 
          employees, and all other persons performing any of the Work in the 
          same manner as if they were the acts and omissions of persons 
          directly employed by the Contractor.

          5.1.4     The Contractor shall not be relieved of its obligations 
          to perform the Work in accordance with the Contract Documents 
          either by the activities or duties of the Owner in its 
          administration of the Contract, including any inspections or tests 
          required or performed under Paragraph 5.6, or by approvals or other 
          similar 

                                      4
<PAGE>

          action with regard to shop drawings or submittals (of any type), or 
          by the activities of persons other than the Contractor with respect 
          to the Project. Further, notwithstanding the fact that a dispute, 
          controversy or other question may have arisen between the parties 
          hereto relating to the execution or progress of the Work,  the 
          interpretation of the Contract Documents, the payment of any 
          monies, the delivery of any materials or any other matter 
          whatsoever, the Contractor shall not be relieved of its obligations 
          to pursue the Work diligently under the Contract Documents pending 
          the determination of such dispute, controversy or other question.

5.1.5     The Contractor shall establish and maintain bench marks and all 
          other grades, lines and levels necessary for the Work, report 
          errors and inconsistencies to the Owner and A/E before commencing 
          Work, and, if applicable, review the placement of the building(s) 
          and permanent facilities on the Job Site with the Owner and A/E 
          after all lines are staked out and before foundation Work is 
          started. Any encroachments made by Contractor or its Subcontractors 
          or Sub-subcontractors (of any tier) on adjacent properties due to 
          construction as revealed by an improvement or other survey shall be 
          the sole responsibility of the Contractor (except for encroachments 
          arising from errors and omissions in the Contract Documents not 
          reasonably discoverable by Contractor), and Contractor shall 
          correct such encroachments within thirty (30) days of the 
          improvement survey (or as soon thereafter as reasonably possible), 
          at Contractor's sole cost and expense, either by the removal of the 
          encroachment (and subsequent reconstruction on the Project site) or 
          agreement with the adjacent property owner(s) (in form and 
          substance satisfactory to Owner in its sole discretion) allowing 
          the encroachments to remain.

5.2       MATERIALS AND EQUIPMENT.

          5.2.1     The Contractor shall submit to Owner, in a form 
          acceptable to Owner, a submittal log which will outline the 
          requirements of each submittal of materials or equipment by the 
          architectural division breakdown, including status dates of 
          delivery of such materials or equipment.

          5.2.2     Materials shall conform to manufacturer's standards in 
          effect at the date of execution of the Agreement and shall be 
          installed in strict accordance with manufacturer's directions. The 
          Contractor shall, reasonably require by Owner or Architect, furnish 
          satisfactory evidence as to the kind and quality of all materials. 
          After the Contract Documents are executed, if it becomes necessary 
          for the Contractor to substitute a material or product of a 
          different brand or manufacturer in lieu of that specified, 
          Contractor shall submit a written request to the owner for approval 
          of such proposed substitutions. Each request for substitution shall 
          be accompanied by complete descriptive literature and performance 
          data upon the specified item and the proposed substitution, plus 
          any samples as may be required by the Owner. Each proposed 
          substitution shall require the written approval of the Owner before 
          its incorporation into the Work, which shall not constitute 
          authorization or approval of a change in the Contract Sum or 
          Contract Time. The Contractor shall submit requests for 
          substitution as soon as practicable after the need for the 
          substitution is determined to allow for adequate consideration of 
          such request and to minimize delay in the progress of the Work.

5.3       WARRANTY. The Contractor represents and warrants to the Owner that 
all materials and equipment furnished under the Contract shall be new unless  
otherwise specified, and that all Work shall be (i) of good quality, free 
from faults and defects, and (ii) in conformance with the Contract Documents. 
All Work not so conforming to these standards shall be considered defective. 
This warranty is not limited by the provisions of Paragraph 14.2 of these 
General Conditions or Article 9 of the Agreement. All warranties and 
guarantees from Subcontractors or Sub-subcontractors (including 
manufacturers) shall be assignable to the Owner regardless of whether it is 
so stated therein, and the Contractor agrees to assign all such warranties 
and guarantees to the Owner and deliver them pursuant to Subparagraph 9.4.2. 
The Contractor's obligations under this Paragraph shall survive the 
expiration or sooner termination of the Contract.

5.4       TAXES; FEES AND LICENSES; ROYALTIES AND PATENTS.

          5.4.1     The Contractor shall pay, or cause to be paid, all import 
          duties and sales, consumer, use, excise, value added and ad valorem 
          taxes required to be paid in connection with the Work or upon 
          materials, tools or equipment brought to the Job Site or used in 
          the Work. If any of the foregoing taxes are not paid in a timely 
          manner, the Owner may withhold the amount of any such taxes from 
          any amounts owing to the Contractor under the Contract Documents, 
          submit the amount so withheld to the appropriate taxing authority 
          on behalf of the Contractor or its Subcontractors or 
          Sub-subcontractors and offset said amount against the Contract Sum.

          5.4.2     The Contractor shall secure and pay for all governmental 
          fees, permits and licenses which 


                                      5
<PAGE>

          the Owner is not specifically required to provide and pay for under 
          the Contract Documents. The Contractor shall secure and pay for all 
          temporary utility connection required to perform the Work, 
          including, without limitation, electrical power, gas and water.

          5.4.3     The Contractor shall pay all royalties and license fees 
          incident to the use of any invention, design, process or device 
          which is the subject of patent rights, copyrights or other 
          proprietary rights held by others, all of which shall be deemed 
          included in the Contract Sum. The Contractor shall not unlawfully 
          use or install any patented or copyrighted article and shall 
          indemnify the Owner from and against any and all actions, suits, 
          judgments, losses, costs or expenses, including attorneys' fees, 
          arising out of any claims for infringement of, or otherwise related 
          to, any patent rights or copyrights. In the event of any injunction 
          or legal action arising out of any such infringement which has the 
          effect of delaying the Work, the Owner may require the Contractor 
          to substitute such other articles of like kind as will make it 
          possible to proceed with and complete the Work, and all costs and 
          expenses occasioned thereby shall be borne by the Contractor.

5.5       COMPLIANCE WITH LAWS. The Contractor shall, at its cost and 
expense, comply with each and every federal, state and local law, ordinance, 
code, rule and regulation, as well as the lawful order or decree of any 
public or quasi-public authority, bearing on the performance and not the 
design (unless Contractor, any Subcontractor, and/or any of their respective 
agents, representatives, suppliers or any other person or entity directly or 
indirectly employed, utilized and/or controlled by any of them prepared the 
design)of the Work specifically including, but not limited to, those 
specified in Subparagraph 10.1.2 and all applicable building codes. The 
Contractor shall review the Contract Documents, as an experienced and prudent 
contractor, in order to determine whether they are in accordance with all 
building laws, codes and regulations. Contractor shall immediately provide 
written notice to Architect and Owner of any building laws, codes or 
regulations that the Contract Documents are in violation of and that 
Contractor knows of or should, as an experienced and prudent contractor, know 
of. The Contractor shall not violate any zoning, set back or other location 
requirements of law, or of any recorded covenants. If Contractor performs the 
Work or any portion thereof in violation of any laws, statutes, ordinances, 
building codes or rules and regulations without express prior written 
approval from Architect and Owner, Contractor shall be fully and solely 
responsible for such Work and all costs and expenses attributable thereto.

5.6       TESTS

          5.6.1     If the Contract Documents, or any laws, ordinances, 
          rules, regulations or any orders or decrease of any public or 
          quasi-public authority having jurisdiction, or common practice in 
          the industry, require or dictate that the Contractor have any 
          portion of the Work inspected, tested or approved, the Contractor 
          shall advise the Owner in a timely manner (in writing, if 
          practicable) of its readiness and of the date arranged so that the 
          Owner may observe such inspection, testing or approval. The 
          Contractor shall bear all costs of such inspections, tests and 
          approvals except as otherwise specified in the Contract Documents.

          5.6.2     The Owner may require any special inspection, testing or 
          approval of the Work not included under Subparagraph 5.7.1, or any 
          more stringent inspection, testing or approval thereof, in which 
          event it shall instruct the Contractor to order such inspection, 
          testing or approval, and the Contractor shall advise the Owner in a 
          timely manner (in writing, if practicable) as in Subparagraph 
          5.7.1. If such inspection or testing reveals any failure of the 
          Work or the performance thereof to comply with the requirements of 
          the Contract Documents, or reveals any defect in the Work, the 
          Contractor shall bear the costs of such inspection or testing and 
          all costs to correct the Work to the satisfaction of the Owner, 
          which, if incurred by the Owner, may be deducted or offset by the 
          Owner against any amounts then or thereafter due to the Contractor. 
          If such inspection or testing proves that the Work was performed 
          properly, the Owner shall bear the costs of such inspection or 
          testing.

          5.6.3     Required certificates of inspection, testing or approval 
          shall be secured by the Contractor and promptly delivered by it to 
          the Owner.

5.7       DRAWINGS. Shop Drawings for architectural, structural, mechanical 
and electrical work shall be submitted for approval to the A/E and a copy of 
all such submissions shall be provided simultaneously to the Owner. 
Contractor shall maintain an accurate record of all deviations from the 
approved shop Drawings and the Plans and the Specifications which occur in 
the Work as actually constructed, and shall submit to the A/E for approval 
two (2) sets (one to be reproducible) of complete information, including 
descriptions, drawings, sketches, marked prints and similar data, indicating 
the "as-built" conditions. Contractor shall keep "record" and shop drawings 
up to date as the Work progresses and shall at all times keep such up-to-date 
drawings available to Owner and A/E at the Work site. Submission of all 
"record" drawings to Owner is required prior to Contractor's Application for 
Final Payment.


                                      6
<PAGE>

5.8   BINDERS. The Contractor shall assemble for approval by the A/E and the 
Owner three (3) complete copies in loose leaf binders of all operating and 
maintenance data for all equipment and machinery, if any, installed as a part 
of the Work.

5.9   CLEANING. The Contractor shall be responsible for damaged or broken 
glass and at completion of the Work shall replace such damaged or broken 
glass. The Contractor shall perform the following final cleaning at 
completion of the Work, as applicable: (a) removal of all temporary 
protections; (b) removal of all marks, stains, fingerprints and other soil or 
dirt from all surfaces and other work; (c) removal of all spots, mortar, 
plaster, soil and paint from ceramic tile, marble, and other finish materials 
and from all surfaces and other work; (d) cleaning of all fixtures, 
cabinetwork and equipment, removal of all stains, paint, dirt, and dust and 
leave same in an undamaged and new condition; and (e) cleaning of all 
surfaces and other work in accordance with recommendations of the 
manufacturer.

5.10   START UP. After Substantial Completion, the Contractor shall perform 
or assist Owner in the start-up of all Equipment and other mechanical 
operations and systems included as a part of the Work.

5.11   GENERAL. The duties and responsibilities of the Contractor as set 
forth in this Article 5 are in addition to, and not in lieu of, other duties 
and responsibilities of the Contractor enumerated elsewhere in the Contract 
Documents.


                                    ARTICLE 6
                                 SUBCONTRACTORS


6.1   GENERAL. Nothing contained in the Contract Documents shall create any 
contractual relationship between the Owner or the Owner's Representative and 
any Subcontractor or Sub-subcontractor. However, it is acknowledged that the 
Owner and Owner's Representative are intended third party beneficiaries of 
the obligations of the Subcontractors and Sub-subcontractors related to the 
Work and the Project.

6.2   AWARD OF SUBCONTRACTS. The Contractor shall, prior to awarding any 
subcontract, notify the Owner in writing of the names of all Subcontractors 
proposed for the several parts of the Work and shall include with any such 
notice the completed insurance information form and any insurance 
certificates required by this Contract for any proposed Subcontractor. The 
Owner may also require such lists and information regarding any proposed 
Sub-subcontractors. The Contractor shall also advise the Owner in writing of 
any Subcontractor or Sub-subcontractor with which it shares any business 
relationship or financial interest, and of the nature and extent of any such 
relationship or interest. No Subcontractor or Sub-subcontractor shall be 
engaged if objected to by the Owner; provided, however, that if the Owner 
does not take exception to a Subcontractor or Sub-subcontractor in writing 
within fifteen (15) days of its receipt of such notification, such 
Subcontractor or Sub-subcontractor shall be deemed acceptable to the Owner. 
The Owner shall not be liable to the Contractor in any manner arising out of 
the Owner's objection to a proposed Subcontractor or Sub-subcontractor. The 
Contractor shall not terminate the employment of a Subcontractor or 
Sub-subcontractor engaged in the Work prior to the expiration of that 
subcontract without good cause shown and the Owner's prior approval after 
reasonable notice of the Contractor's intent to so terminate. If any 
Subcontractor withdraws, becomes insolvent or otherwise incapacitated, 
abandons the Work or is dismissed by Contractor, then Contractor shall 
promptly submit a substitute Subcontractor to Owner for Owner's approval, 
which approval shall not be unreasonably withheld. If Owner rejects any 
proposed substitute Subcontractor, Owner will provide Contractor with Owner's 
reason for such rejection. All costs incurred by Contractor in replacing any 
Subcontractor shall be borne by Contractor. The Contractor shall provide the 
Owner with copies of each subcontract with the subcontractor within ten (10) 
days after execution of the subcontract by the Contractor. If the Owner 
provides Contractor with a list of pre-approved Subcontractors prior to bid, 
the Owner may elect to reject a listed Subcontractor and that portion of the 
Contractor's bid relating thereto. In that event, Owner shall be liable for 
the difference in cost between the bid of the original Subcontractor and that 
of the Subcontractor hired to perform the Work. If the Owner provides no such 
pre-approved list, Owner may elect to reject any Subcontractor proposed by 
Contractor and shall be liable for the difference in cost between the bid of 
the originally proposed Subcontractor and that of the Subcontractor hired to 
perform the work only if Owner's rejection is unreasonable or arbitrary.

6.3   SUBCONTRACTUAL RELATIONS.

      6.3.1   All subcontracts and sub-subcontracts shall be in writing. 
      Each subcontract and sub-subcontract shall contain a reference to 
      this Contract and shall incorporate the terms and conditions hereof 
      to the full extent applicable to the portion of the Work covered 
      thereby. Each Subcontractor must agree, for the benefit of the 
      Owner, to be bound by, and to require each of its Sub-subcontractors 
      to be bound by, such terms and conditions to the full extent 
      applicable to its portion of the Work. In addition, each

                                      7
<PAGE>

      Subcontract and sub-subcontract must: (i) require that the Work 
      be performed in strict accordance with the requirements of the 
      Contract Documents; (ii) waive all rights that the 
      subcontractor or sub-subcontractor may have against the Owner for 
      damages caused by fire or other perils covered by the property
      insurance required by the Contract Documents; (iii)
      require the subcontractor or sub-subcontractor to carry and 
      maintain insurance of the types and in the amounts required of 
      Contractor by the Contract; (iv) require the subcontractor or
      sub-subcontractor to furnish such certificates and waivers as the 
      Owner, any lender or title insurer may reasonably request,
      including waivers of mechanics', labor and materialmens' lien 
      rights to the extent permitted by law; and (v) provide that the 
      subcontract is freely assignable by Contractor to Owner and its 
      assigns.

      6.3.2    Each subcontract awarded hereunder by Contractor is hereby
      assigned by Contractor to Owner; provided, however, that such
      assignment is effective only after termination of the Contract by 
      Owner (in whole or in part) and only as to those subcontracts
      which the Owner affirmatively accepts by notifying the 
      Subcontractor in writing. Upon the acceptance of a particular
      subcontract by Owner, (i) Contractor will promptly furnish to Owner 
      the original signed copy of the subcontract and (ii) Owner
      shall only be required to compensate the designated Subcontractor 
      for compensation accruing for Work done or materials delivered
      from and after the date on which Owner accepts the Subcontract.
      Contractor shall be solely responsible for promptly paying all sums 
      due and owing by Contractor to the designated Subcontractor for 
      work performed or material supplied prior to Owner's acceptance of 
      the applicable Subcontract.

      6.3.3    Contractor shall be solely and fully responsible for the 
      payment of all Subcontractors and all other persons or entities 
      directly or indirectly employed by the Contractor, whether or not 
      such persons or entities are entitled to assert mechanics' lien, 
      equitable lien or labor and materialmens' lien rights against the 
      property of Owner or the Work. If Contractor fails to make payment 
      to any Subcontractors, Owner will have the right to make payment 
      directly to such subcontractors for the amount claimed to be due by 
      such party, and the amount of any such payment may be charged to 
      Contractor (which Contractor will promptly pay) or deducted from the 
      amount due or to become due contractor under the Contract.


                                    ARTICLE 7
                               SEPARATE CONTRACTS


7.1   OWNER'S RIGHT TO AWARD SEPARATE CONTRACTS. The Owner reserves the right 
to award other contracts in connection with the Project or other work on the 
Job Site on any terms and conditions which the Owner may from time to time 
determine in its sole discretion (hereinafter referred to as "Separate 
Contracts"; and such other Contractors are hereinafter referred to as 
"Separate Contractors").

7.2   MUTUAL RESPONSIBILITY OF CONTRACTORS.

      7.2.1    The Contractor shall afford all Separate Contractors and the 
      Owner reasonable opportunity for the introduction and storage of their 
      materials and equipment and for the execution of their work and shall 
      properly cooperate, connect and coordinate the Work with such other work 
      as shall be in the best interest of the Project as reasonably determined 
      by the Owner.

      7.2.2    If the execution or result of any part of the Work depends upon 
      any work of the Owner or of any Separate Contractor, the Contractor 
      shall, prior to proceeding with the Work, inspect and promptly 
      report to the Owner in writing any apparent discrepancies or
      defects in such work of the Owner or of any Separate Contractor
      that render it unsuitable for the proper execution or result 
      of any part of the Work. Failure of the Contractor to so inspect 
      and report shall constitute an acceptance of the Owner's or 
      Separate Contractor's work as fit and proper to receive the Work, 
      except as to defects which may develop in the Owner's or Separate
      Contractor's work after completion of the Work and which the 
      Contractor could not have discovered by its inspection prior to the 
      completion of the Work.

      7.2.3    Should the Contractor cause damage to the work or property of the
      Owner or of any Separate Contractor on the Project, or to other work 
      on the Job Site, or delay or interfere with the Owner's or any 
      Separate Contractor's work, the Contractor shall be liable for the 
      same; and, in the case of a Separate Contractor, the Contractor 
      shall attempt to settle said claim with such Separate Contractor 
      prior to such Separate 

                                      8
<PAGE>

      Contractor's institution of litigation or other proceedings against 
      the Contractor. If so requested by the parties to the dispute, the 
      Owner may, but shall not be obligated to, arbitrate the dispute, in 
      which event the decision of the Owner shall be final and binding on 
      the parties to the dispute.

      7.2.4    Should any Separate Contractor cause damage to the Work or to 
      the property of the Contractor or cause delay or interference with the 
      Contractor's performance of the Work, the  Contractor shall present to 
      such Separate Contractor any claims it may have as a result of such 
      damage, delay or interference (with an information copy to the 
      Owner) and shall attempt to settle its claim against such Separate 
      Contractor prior to the institution of litigation or other 
      proceedings against said such Separate Contractor. If so requested by 
      the parties to the dispute, the Owner may, but shall not be obligated to,
      arbitrate the dispute, in which event the decision of the Owner shall be 
      final and binding on the parties to the dispute. In no event shall the 
      Contractor seek to recover from the Owner or the Owner's Representative, 
      and the Contractor hereby represents that it will not seek to recover 
      from them, any costs, expenses or losses incurred by the Contractor as a
      result of any damage to the Work or property of the Contractor or any 
      delay or interference caused or allegedly caused by any Separate 
      Contractor.

      7.2.5     If a dispute arises between the Contractor and any Separate 
      Contractors as to the responsibility for cleaning as required by the 
      Contract Documents, the Owner may clean and charge the cost thereof to 
      the responsible contractor, or apportion it among the several responsible
      contractors, as the Owner shall reasonably determine to be just.


                                    ARTICLE 8
                                      TIME


8.1      DEFINITIONS.

         8.1.1    Whenever the word "day" is used in the Contract Documents, it
         shall mean a calendar day unless otherwise specifically provided.

8.2      PROGRESS AND COMPLETION; SCHEDULING.

         8.2.1    All times and dates stated in the Contract Documents 
         including, without limitation, the Commencement Date, Milestone Dates,
         the Substantial Completion Date, and all dates and times for the 
         delivery and installation of materials and equipment, are of the 
         essence of the Contract.

         8.2.2    The Contractor shall begin the Work on the Commencement Date 
         and shall perform the Work diligently, expeditiously and with adequate 
         resources so as to meet all Milestones and complete all the Work within
         the Contract Time. The scheduling of the Work shall be performed and 
         monitored by the Contractor utilizing a reasonable method to be chosen 
         by the Owner. The Contractor (and its Subcontractors, if the Owner 
         requires) shall prepare a construction time schedule (the "Schedule") 
         setting forth the times by which each significant segment of the Work 
         must be commenced and completed and the schedule pursuant to which the 
         Work must be performed in order for the Work to be completed on time. 
         The Schedule shall be subject to Owner's approval. In addition, the 
         Contractor (and its Subcontractors, if the Owner requires) shall 
         furnish all scheduling information requested by the Owner (in such form
         and detail as requested for the particular portion of the Work and as 
         approved by Owner) within two (2) weeks of the Owner's request and 
         shall attend such meetings concerning scheduling as the Owner may call 
         from time to time. The Contractor shall comply with the Schedule or 
         Schedules established by it and approved by the Owner. With respect to 
         any portion of the Work for which a Schedule has not been established, 
         the Contractor shall commence such portion of the Work within three (3)
         days of the date on which the Owner directs such commencement and shall
         thereafter prosecute and complete the same with all due diligence or as
         otherwise directed by the Owner. Neither the scheduling information 
         submitted by the Contractor or its Subcontractors, the acceptance or 
         approval thereof by the Owner nor the establishment or implementation 
         of, or failure to establish or implement, a Schedule by the Owner shall
         relieve the Contractor of its obligation to perform and complete the 
         Work in a timely manner or to otherwise perform in accordance with the
         Contract Documents.

         8.2.3   The Contractor shall update the Schedule every two weeks to 
         reflect any authorized changes in the Contract Time and 


                                      9
<PAGE>

         shall provide a chart showing the progress of each separate segment of 
         the Work and any new projected completion date(s).

         8.2.4    Float or slack time associated with any one chain of 
         activities is defined as the amount of time between earliest start 
         date and latest start date or between earliest finish date and 
         latest finish date for such activities, as set forth in an approved 
         Schedule (assuming the critical path method is used), including any 
         revision or updates thereto. Float or slack time is not for the 
         exclusive use or benefit of either the Owner or the Contractor. 
         However, if float time associated with any chain of activities is 
         expended but not exceeded by any actions attributable to the Owner, 
         the Contractor shall not be entitled to an extension in the Contract 
         Time.

8.3      DELAYS, EXTENSIONS OF TIME AND OVERTIME.

         8.3.1    If the Contractor is delayed at any time in progress of the 
         Work solely by (i) an act or neglect of the Owner or Architect, an 
         employee of either or a separate contractor employed by Owner or 
         (ii) by a Force Majeure Event, then the Contract Time may be 
         extended as is necessary to reflect the length of the delay actually 
         and directly caused by such occurrence; provided, however, that no 
         claim by the Contractor for an extension of time for any such delay 
         shall be considered unless made in accordance with Paragraph 13.1 
         below. For the purposes of the Contract, the term "Force Majeure 
         Event" shall mean fire, flood, earthquake, strike (provided the 
         strike does not arise from the actions or inactions of Contractor, 
         any Subcontractor, and/or any of their respective agents, 
         representatives, suppliers or any other person or entity directly or 
         indirectly employed, utilized and/or controlled by any of them) or 
         other Act of God not caused or permitted by Contractor and which 
         could not have been anticipated by Contractor. The Contractor shall, 
         in the event of any occurrence likely to cause a delay, cooperate in 
         good faith with the Architect and Owner to minimize and mitigate the 
         impact of any such occurrence and do all things reasonable under the 
         circumstances to achieve this goal. Contractor understands and 
         agrees that, regardless of the cause of any delay and whether or not 
         any extension of time may be agreed to in connection therewith, 
         Contractor shall continue to prosecute all Work not affected by said 
         delay and, with respect to such portion or portions of the Work as 
         may be so affected, Contractor shall use its best efforts to 
         minimize the effect of said delay. The foregoing terms and 
         provisions of this Paragraph 8.3.1 notwithstanding, in no event and 
         under no circumstances will the Contract Time be extended in the 
         event of any delay caused by (i) an act or neglect or the fault of 
         Contractor, any Subcontractor, any Sub-subcontractor and/or any of 
         their respective agents, employees, representatives, suppliers or 
         any other person or entity directly or indirectly employed, utilized 
         and/or controlled by any of them, (ii) intentionally omitted, (iii) 
         delays in transportation, (iv) lack of supplies or unavailability of 
         specific mechanical elements or (v) labor disputes within the work 
         force of Contractor, any Subcontractor, and/or any of their 
         respective agents, representatives, suppliers or any other person or 
         entity directly or indirectly employed, utilized and/or controlled 
         by any of them unless such labor disputes are not the result of the 
         actions or inactions of Contractor, any Subcontractor, and/or any of 
         their respective agents, representatives, suppliers or any other 
         person or entity directly or indirectly employed, utilized and/or 
         controlled by any of them.
         
         8.3.2    No change in the Work, whether by way of alteration or 
         addition to the Work, shall be the basis of an extension in the 
         Contract Time unless and until such alteration or addition has been 
         authorized by a Change Order executed and issued in accordance with 
         and in strict compliance with the requirements of the Contract 
         Documents. Any claim for increased cost for delay shall be asserted 
         in accordance with the provisions of Paragraph 13.1 unless the time 
         is extended in writing by the Owner. This requirement is of the 
         essence of the Contract Documents. Accordingly, no course of conduct 
         or dealings between the parties, nor express or implied acceptance 
         of alterations or additions to the Work, and no claim that the Owner 
         has been unjustly enriched by an alteration or addition to the Work, 
         whether or not there is in fact any such unjust enrichment, shall be 
         the basis for any claim to an increase in the Contract Sum or an 
         extension in the Contract Time.

         8.3.3    Notwithstanding any other term or provision of the Contract 
         to the contrary, if Contractor fails to achieve Substantial 
         Completion of any phase of the Work on or before the expiration of 
         the Contract Time for any reason other than the occurrence of a 
         Force Majeure Event, Contractor shall pay to Owner the following as 
         liquidated delay damages the sum of $____N/A______ for each calendar 
         day for which Substantial Completion shall not have occurred on or 
         before the expiration of 
         

                                     10
<PAGE>

         the Contract Time ("Delay Damages") (if this Agreement if for 
         continuing (on-call) Work on multiple projects or continuing (on-call)
         services, the Delay Damages shall be as set forth in the Owner 
         approved Work Authorization form). It is hereby expressly agreed by 
         Contractor that the Delay Damages to which Owner is entitled under 
         this Paragraph 8.3.3 are a reasonable forecast of just compensation 
         for the harm that would be caused by Contractor's failure to achieve 
         Substantial Completion by the expiration of the Contract Time, but do 
         not compensate Owner for any other damages of any type or kind, 
         including without limitation any damages related to or in connection 
         with Contractor's failure to fully and properly  perform the Contract 
         Documents or any damages resulting from ______________ (if this 
         Agreement if for continuing (on-call) Work on multiple projects or 
         continuing (on-call) services, this information shall be as set forth
         in the Owner approved Work Authorization form).

         8.3.4    All Delay Damages will be due and payable immediately upon 
         Owner's demand therefor, and all Delay Damages that remain unpaid 
         shall bear interest from the date of demand until paid at the 
         maximum lawful rate, or if there is no applicable maximum lawful 
         rate, at the rate of 12% per annum. Owner shall have the right, but 
         not the obligation, to set off all Delay Damages against any amounts 
         due from Owner to Contractor, including without limitation any 
         retainage amounts.

         8.3.5    In addition to the Delay Damages, Owner shall at all times 
         be entitled to all of its remedies under the Contract Documents and 
         at law and in equity, including, without limitation, the recovery of 
         damages related to or in connection with Contractor's failure to 
         fully and properly perform the Contract Documents or any damages 
         resulting from _________________ (if this Agreement if for 
         continuing (on-call) Work on multiple projects or continuing 
         (on-call) services, this information shall be as set forth in the 
         Owner approved Work Authorization form).

         8.3.6    Whenever the Work falls behind schedule due to the fault of 
         the Contractor, the Contractor shall, to the extent necessary to 
         meet said schedule, increase its labor force and/or provide 
         overtime, extra shifts, Saturday, Sunday and/or holiday work, and 
         shall have each Subcontractor do likewise, all at no additional cost 
         to or compensation from the Owner. Further, the Owner shall have the 
         right to deduct or offset against any amounts then or thereafter due 
         to the Contractor, or to be reimbursed by the Contractor for, any 
         additional costs the Owner may incur as a direct result of said 
         increase in labor force or overtime, extra shifts, Saturday, Sunday 
         and/or holiday work.

         8.3.7    The Owner may, in its sole discretion and for any reason, 
         direct the Contractor to accelerate the schedule of performance by 
         providing overtime, extra shifts, Saturday, Sunday and/or holiday 
         work and/or by having all or any Subcontractors or 
         Sub-subcontractors designated by the Owner provide overtime, extra 
         shifts, Saturday, Sunday and/or holiday work.

                    8.3.7.1   In the event of overtime, extra shifts, Saturday, 
                    Sunday or holiday work by the Contractor's own forces 
                    pursuant to this Subparagraph 8.3.7, the Owner's sole and 
                    exclusive obligation to the Contractor (except as 
                    hereinafter provided) on account thereof shall be to 
                    reimburse the Contractor for the direct cost to the 
                    Contractor of the premium time (or shift differential for 
                    any extra shifts) for all labor utilized by the Contractor 
                    in such overtime, extra shifts, Saturday, Sunday or holiday 
                    work (but not for the straight time costs of such labor), 
                    together with any Social Security and state or Federal 
                    unemployment insurance taxes in connection with such 
                    premium time (or shift differential for any extra shifts).

                    8.3.7.2   In the event of overtime, extra shifts, Saturday, 
                    Sunday or holiday work by a Subcontractor pursuant to this 
                    Subparagraph 8.3.7, the Owner's sole and exclusive 
                    obligation to the Contractor (except as hereinafter 
                    provided) on account thereof shall be to reimburse the 
                    Contractor for the direct cost to the Subcontractor for the 
                    premium time (or shift differential for any extra shifts) 
                    of all labor utilized in such overtime, extra shifts, 
                    Saturday, Sunday or holiday work (but not for the straight 
                    time costs of such labor), together with any Social 
                    Security and state or Federal unemployment insurance taxes, 
                    benefits and mark up in connection with such premium time.


                                       11
<PAGE>

8.4      TEMPORARY SUSPENSION OF WORK. The Owner shall have the authority to
suspend the Work, in whole or in part, for such periods and such reasons as 
it may deem necessary or desirable, in its sole discretion, including without 
limitation: (a) unsuitable weather; (b) other conditions considered 
unfavorable for the suitable prosecution of the Work; (c) special events 
and/or (d) other conditions considered adverse to the best interests of the 
Owner. Any such suspension shall be in writing to the Contractor. The 
Contractor shall immediately obey such orders of the Owner and shall not 
resume the Work until so ordered in writing by the Owner. The Contractor 
shall be entitled to an extension of the Contract Time not to exceed the 
length of time that the Work was suspended provided the claim is submitted in 
accordance with Paragraph 13.1 and the suspension is not due to an act or 
omission of the Contractor, any Subcontractor or Sub-subcontractor.


                                    ARTICLE 9
                             PAYMENTS AND COMPLETION

9.1      APPLICATION FOR PAYMENT; PASSAGE OF TITLE.

         9.1.1    The "Payment Application Date" shall be that day of each 
         Calendar month designated in Section 7.1 of the Agreement when the 
         Contractor shall deliver the "Application for Payment", as hereinafter 
         defined, to the Owner.

         9.1.2    The "Application for Payment" shall be an invoice prepared 
         by the Contractor and submitted to the Owner in accordance with the 
         Contract Documents. It shall show in detail all monies properly 
         payable to the Contractor in accordance with the Approved Schedule 
         of Values, including those items of labor, materials and equipment 
         used or incorporated in the Work (and, if the Owner has agreed in 
         advance in writing, suitably stored at the Job Site) through and 
         including the Payment Application Date. The Application for Payment 
         shall have, as attachments, (a) conditional mechanics' lien releases 
         from the Contractor and all applicable Subcontractors, 
         Sub-subcontractors and suppliers with respect to materials supplied 
         and services provided for which current payment is requested, (b) 
         unconditional mechanics' lien releases from the Contractor and all 
         applicable Subcontractors, Sub-subcontractors and suppliers with 
         respect to materials supplied and services provided for which 
         payment by the Owner was made pursuant to the previous Application 
         for Payment (provided that if a required payment has not been made 
         by Owner pursuant to the terms of this Agreement for any previous 
         month, Contractor shall attach conditional lien releases from the 
         Contractor and all applicable Subcontractors, Sub-subcontractors and 
         suppliers for which payment has not been made pursuant to this 
         Agreement and, upon receipt of the required payment, Contractor 
         shall immediately deliver to Owner unconditional mechanics' lien 
         releases) and (c) such other evidence of performance of the Work, 
         the costs thereof and payment therefor as the Owner may deem 
         necessary or desirable. The submission of the foregoing waivers and 
         other evidence shall be express conditions precedent to Owner's 
         obligation to make payment and to Contractor's entitlement to 
         payment. All such mechanics' lien releases shall be subject to the 
         approval of the Owner and shall comply with the laws of the state 
         where the Project is located, as amended from time to time. The date 
         of coverage and total dollar amount of the mechanics' liens released 
         shall be provided on all such releases.

         9.1.3    The Contractor warrants that title to all Work, materials 
         and equipment covered by an Application for Payment shall pass to 
         the Owner, free and clear of all liens, claims, security interests 
         or encumbrances, upon the sooner occurrence of: (a) the delivery of 
         any such materials or equipment to the Job Site and incorporation 
         into the Work; or (b) the tender of payment of the applicable 
         Application for Payment by the Owner to the Contractor; and that no 
         Work, materials or equipment covered by an Application for Payment 
         shall have been acquired, whether by the Contractor or by any 
         Subcontractor or Sub-subcontractor, subject to an agreement under 
         which an interest therein or an encumbrance thereon is retained by 
         the seller or otherwise imposed by the Contractor or such other 
         person. The passage of title to the Owner as provided herein shall 
         not alter or limit the obligations and duties of the Contractor with 
         respect to the Work and the materials or equipment incorporated 
         therein or used in connection therewith as set forth in the Contract 
         Documents.

9.2      APPROVALS OF APPLICATIONS FOR PAYMENT.

         9.2.1    If the Contractor has submitted an Application for Payment in 
         the manner prescribed in the Contract Documents, the Owner shall, with 
         reasonable promptness, approve the same (or such portions thereof 
         covering amounts it determines to be properly due) or shall state in 


                                       12
<PAGE>

         writing its reasons for withholding its approval (whether of all or a 
         part).

         9.2.2    The Owner's approval of an Application for Payment shall 
         not constitute a representation by the Owner that the conditions 
         precedent to the Contractor's entitlement to payment have been 
         fulfilled, nor shall approval of an Application for Payment by the 
         Owner be deemed a representation by the Owner: (a) that it has made 
         exhaustive or continuous on-site inspections to check the quality or 
         quantity of the Work; (b) that it has reviewed the construction 
         means, methods, techniques, sequences, coordination or procedures, 
         or the cleanliness of the Job Site, or the safety precautions and 
         programs, in connection with the Work; (c) that it has made any 
         examination to ascertain how or for what purpose the Contractor has 
         used the monies previously paid on account of the Contract Sum.
                  
         9.2.3    No approval of an Application for Payment, progress payment 
         or any beneficial, partial payment or any partial or entire use or 
         occupancy of the Project by the Owner shall constitute an acceptance 
         of any Work which is not in accordance with the Contract Documents; 
         and regardless of approval of an Application for Payment by the 
         Owner, the Contractor shall remain totally obligated and liable for 
         the performance of the Work in strict compliance with the Contract 
         Documents.
         
         9.2.4    Subject to the Owner's rights to deduct, offset or withhold 
         as set forth in these General Conditions, after the Owner has 
         approved an Application for Payment, in whole or in part, it shall 
         make payment of the amount approved to the Contractor as provided in 
         the Contract Documents.

9.3      PAYMENTS WITHHELD; OWNER'S RIGHT TO MAKE DIRECT PAYMENTS FOR WORK; 
         FAILURE OF PAYMENT.

         9.3.1    The Owner may withhold its approval of an Application for 
         Payment, in whole or in part, or nullify the whole or any part of an 
         approval previously given, if Owner reasonably determines that the 
         Application for Payment covers portions of the Work which have not, in
         fact, been completed, or that it includes amounts for claims 
         allegedly made but not actually made (or subsequently withdrawn), 
         and/or for which payment is not then due or if, and to the extent that
         Owner deems it necessary or desirable, to protect itself against 
         loss or damage due to: (a) defective Work not remedied;  (b) 
         Subcontractor or Sub-subcontractor or other third-party claims or 
         liens or reasonable evidence indicating such probable third-party 
         claims or liens; (c) failure or alleged failure of the Contractor 
         to make payments to Subcontractors (or of Subcontractors to make 
         payments to Sub-subcontractors) as required by the Contract Documents, 
         or failure to provide lien waivers; (d) inability, or reasonable doubt 
         as to the ability, of the Contractor to complete the Work within the 
         Contract Time, for the unpaid balance of the Contract Sum or within the
         estimates prepared by the Contractor and submitted to and approved 
         by the Owner; (e) damage to the Owner or a Separate Contractor; 
         (f) unsatisfactory prosecution of the Work by the Contractor, its 
         Subcontractors or Sub-subcontractors; (g) failure of the Contractor to 
         maintain the Job Site in a clean and safe condition; (h) failure of the
         Contractor to meet any other monetary obligation imposed upon it 
         pursuant to the Contract Documents or (i) failure of the Contractor 
         to comply with any other provision of the Contract Documents.
         
         9.3.2  The Owner, after giving the Contractor notice, may make 
         payments on account of labor, materials and/or equipment for the Work 
         directly to any or all of the Subcontractors, Sub-subcontractors or 
         persons entitled to the same in lieu of paying the Contractor therefor 
         or make joint payment to any such person and the Contractor. Any 
         amounts so paid shall be credited against the Contract Sum. No such 
         payment shall create any relationship between the recipient thereof 
         and the Owner, nor any duty on the part of the Owner. The Contractor 
         shall cooperate with the Owner to facilitate any such direct payments 
         and shall provide such evidence as the Owner may request for purposes 
         of determining any amount to be so paid. If the Owner elects to make 
         such payments as a result of a failure on the part of the Contractor to
         perform in accordance with the Contract, or as a result of a request 
         from the Contractor that the Owner make such payments, then the Owner 
         may deduct the amount of its administrative costs incurred in making 
         said such payments from the Contract Sum or render an invoice to 
         the Contractor for such administrative costs, which invoice the 
         Contractor shall promptly pay.
         
         9.3.3 If the Owner does not pay the Contractor within seven days, 
         after the date established in the Contract Documents the amount 
         certified by the Architect, for reasons other than a default by 
         Contractor or the Work in question has been rejected by any 
         governmental authority, the Owner, or any lender of the Owner, then 
         the Contractor may, upon seven additional days written notice to the 
         Owner, stop the Work until payment of the amount owing has been 
         received. The Contract Time shall be extended 

                                      13
<PAGE>

         appropriately and the Contract Sum shall be increased by the amount 
         of the Contractor's reasonable costs of shut-down, delay and 
         start-up, which shall be accomplished as provided in Article 8. 
         Notwithstanding the foregoing, the Contractor may not stop Work 
         during the pendency of a bona fide dispute between Owner and 
         Contractor, provided any sums in dispute claimed by the Contractor 
         are placed in escrow or the Owner's lender, if any, agrees to 
         withhold and pay said disputed sums when the dispute is resolved.

9.4      SUBSTANTIAL COMPLETION AND FINAL PAYMENT.

         9.4.1    On the Date of Substantial Completion, the Contractor shall 
         prepare and submit to the Owner a list of items to be completed 
         and/or corrected ("punch-list" items) and its final bill, including 
         itemized projected amounts for any portions of the Work not yet 
         completed. The failure to include any items on such "punch-list" 
         shall not alter the responsibility of the Contractor to complete 
         and/or correct the Work in accordance with the Contract Documents. 
         When the Owner, on the basis of an inspection, confirms the 
         notification from the Contractor that the Work is Substantially 
         Completed or, without being notified by the Contractor, determines 
         that the Work is Substantially Completed, the Owner shall prepare 
         and deliver to the Contractor a Certificate of Substantial 
         Completion which may state the responsibilities of the Owner and the 
         Contractor for maintenance, heat, utilities and insurance and shall 
         list the items determined by the Owner to require completion or 
         correction as applicable, and fix the time within which the 
         Contractor shall complete or correct the items listed and submit to 
         the Owner all documents and other matters required by the Contract 
         Documents to be submitted by the Contractor upon completion of the 
         Work. The Certificate of Substantial Completion shall constitute a 
         demand for a formal billing (including all costs, claims or fees for 
         any outstanding Change Orders, or any other matter which the 
         Contractor has not previously waived pursuant to the General 
         Conditions, and itemized projections for any incomplete Work), and 
         the Contractor shall be deemed conclusively to have waived the right 
         to payment of any such item, fee or cost of any kind not billed to 
         the Owner within thirty (30) days of delivery to the Contractor of 
         the Certificate of Substantial Completion.  The issuance of the 
         Certificate of Substantial Completion shall not constitute a waiver 
         of any rights of the Owner, including without limitation the right 
         to those retainages permitted by the Contract Documents. If the 
         Contractor does not complete and/or correct the "punch-list" items 
         listed in the Certificate of Substantial Completion within the time 
         fixed therein, the Owner shall have the right to accomplish the same 
         and deduct or offset all costs thereof against any amounts then or 
         thereafter due to the Contractor. If the amounts then or thereafter 
         due to the Contractor are not sufficient to cover such costs, the 
         Contractor shall pay the difference to the Owner. The Owner's 
         decision as to the Date of Substantial Completion shall be final and 
         binding.
         
         9.4.2    Within a reasonable time following the Owner's receipt of 
         written notification from the Contractor that the Work is ready for 
         final inspection and acceptance, and receipt of the final 
         Application for Payment, the Owner shall make such inspection and, 
         when the Work is found to be acceptable under the Contract Documents 
         and the Contract fully performed, shall approve the final 
         Application for Payment; provided, however, that neither the final 
         payment nor any retention shall become due until the Contractor 
         submits to the Owner: (a) evidence of payment in a form approved by 
         the Owner, that all payrolls, bills for materials, supplies and 
         equipment and other indebtedness connected with the Work for which 
         the Owner or its property might in any way be responsible have been 
         paid in full or otherwise satisfied; (b) consent of sureties, if 
         any, to final payment; (c) all Contract Documents (except one set 
         thereof to be retained by the Contractor), including a complete set 
         of as-built and record documents (as defined in and to the extent 
         required by the Specifications); (d) such other data as the Owner 
         reasonably may require establishing payment or satisfaction of all 
         obligations of the Contractor in connection with the Work including 
         receipts of final satisfaction and releases and waivers of liens and 
         releases of any and all claims by the Contractor, Subcontractors and 
         Sub-subcontractors, conforming in all material respects with the 
         laws of the state where the Project is located and evidencing 
         performance of the Work in accordance with the Contract Documents; 
         (e) a release of the Owner and its insurers from and against any 
         claims under the insurance required to be provided by the Owner 
         hereunder (except to the extent of any claims theretofore timely 
         filed which are owing but unpaid) and a release of the Owner from 
         and against any claims between the Contractor and a separate 
         contractor; (f) any governmental certificates required by the 
         Contract Documents or otherwise to evidence compliance of the 
         Contractor and the Work with applicable laws, ordinances, rules, 
         codes and regulations and the Contract Documents and (g) warranties, 
         guarantees, assignments thereof, and maintenance or other manuals, 
         required by the 

                                       14
<PAGE>

         Specifications in the forms approved by the Owner, in favor of the 
         Owner and such other persons as the Owner may direct. The submission 
         of all of the foregoing is an express condition precedent to 
         Contractor's entitlement to final payment.
         
         9.4.3    The making of final payment shall not constitute a waiver 
         of any claims or rights by the Owner.
         
         9.4.4    The acceptance of final payment by Contractor shall 
         constitute a waiver of all claims by the Contractor and shall 
         constitute a general release of the Owner and the Owner's 
         Representative by the Contractor.
         
         9.4.5    If at any time any Subcontractor or Sub-subcontractor 
         refuses to furnish any release, satisfaction or waiver of lien 
         required at any time by the Owner under Paragraphs 9.1, 9.3 or 9.4, 
         or files a claim of lien against the Owner or any of the Owner's 
         property, the Contractor shall, if requested by the Owner and at the 
         Contractor's expense, furnish and record a Mechanic's Lien Release 
         Bond (separate and apart from any other bond provided by the 
         Contractor hereunder) that is in full compliance with the 
         then-current laws, rules, regulations and ordinances of the state 
         and the locality where the Project is located. If any Subcontractor 
         or Sub-subcontractor serves a Stop Notice (bonded or otherwise) on 
         Owner, Contractor shall, if requested by Owner and at Contractor's 
         expense, furnish a Stop Notice Release Bond (separate and apart from 
         any other bond provided by the Contractor hereunder) that is in full 
         compliance with the then-current laws, rules, regulations and 
         ordinances of the state and the locality where the Project is 
         located. The Contractor authorizes the Owner, and shall cause its 
         Subcontractors and Sub-subcontractors to authorize the Owner, to 
         check directly with any suppliers of labor and material with respect 
         to any item chargeable to the Owner's property, to confirm balances 
         due and to obtain sworn statements and waivers of lien, all if the 
         Owner so elects. If any lien remains unsatisfied after all payments 
         are made to the Contractor, the Contractor shall reimburse the Owner 
         upon Owner's demand the full amount of all monies that the Owner may 
         be compelled to pay in discharging such lien, including all costs 
         and attorneys' fees.

9.5      BENEFICIAL USE AND OCCUPANCY; PARTIAL SUBSTANTIAL COMPLETION.

         9.5.1    The Owner and its lessees and separate contractors may 
         occupy or use any completed or partially completed portion of the 
         Work at any stage of construction regardless of whether the Contract 
         Time has expired (hereinafter sometimes referred to as "Partial 
         Occupancy"). Such Partial Occupancy may commence whether or not the 
         applicable portion of Work is substantially complete.
         
         9.5.2    In the event of Partial Occupancy, the Contractor shall 
         promptly secure endorsement from its insurance carrier(s), consent 
         from its surety(ies), if any, and consent from public authorities 
         having jurisdiction over the Work permitting Partial Occupancy.
         
         9.5.3    In the event of Partial Occupancy before substantial 
         Completion as provided above, the Contractor shall cooperate with 
         the Owner in making available for the Owner's use and benefit such 
         building services as heating, ventilating, cooling, water, lighting, 
         telephone, elevators and security for the portion or portions to be 
         occupied, and if the work required to furnish such services is not 
         entirely completed at the time the Owner desires to occupy the 
         aforesaid portion or portions, the Contractor shall make every 
         reasonable effort to complete such Work or make temporary provisions 
         for such Work as soon as possible so that the aforementioned 
         building services may be put into operation and use. 
         
         9.5.4    In the event of Partial Occupancy prior to Substantial  
         Completion, mutually acceptable arrangements shall be made between 
         the Owner and Contractor in respect of the operation and cost of 
         necessary security, maintenance and utilities, including heating, 
         ventilating, cooling, water, lighting and telephone  services and  
         elevators.  The Owner shall assume  proportionate  and  reasonable 
         responsibility for the cost of the above services reduced by any 
         savings to contractor for such services realized by reason of 
         Partial Occupancy. Further, mutually acceptable arrangements shall 
         be made between the Owner and Contractor in respect of insurance and 
         damage to the Work. Contractor's acceptance of arrangements proposed 
         by Owner in respect of such matters shall not be unreasonably 
         withheld, delayed or conditioned.
         
         9.5.5    In each instance, when the Owner elects to exercise its right 
         of Partial Occupancy as described herein, Owner will give Contractor 
         and Architect advance written notice of its election to take the 
         portion or portions involved, and immediately prior to Partial 
         Occupancy, the Owner, Contractor and Architect shall jointly inspect 
         the area to be occupied or portion of the Work to be used to 
         determine and record the conditions of the same.
         
                                      15
<PAGE>

         9.5.6    It shall be understood, however, that Partial Occupancy shall 
         not: (i) constitute acceptance of any Work, (ii) relieve the 
         Contractor for responsibility for loss or damage because of or 
         arising out of defects in, or malfunctioning of, any Work, material 
         or equipment, nor from any other unfulfilled obligations or 
         responsibilities under the Contract Documents or (iii) commence any 
         warranty period under the Contract Documents; provided that 
         Contractor shall not be liable for ordinary wear and tear resulting 
         from such Partial Occupancy and provided further that warranty of 
         the portions of the Work and systems utilized only for that portion 
         of the Work receiving Partial Occupancy shall commence on the date 
         of Partial Occupancy.
         
         9.5.7    Subject to the terms and conditions provided herein, if the 
         Contractor claims that delay or additional cost is involved because 
         of Partial Occupancy by the Owner, Contractor shall make such Claim 
         as provided elsewhere in the Contract Documents.

                                   ARTICLE 10
                       PROTECTION OF PERSONS AND PROPERTY


10.1     RESPONSIBILITY FOR SAFETY AND HEALTH.

         10.1.1   The Contractor  shall be responsible  for initiating,  
         maintaining  and supervising  safety and anti-substance abuse 
         precautions and programs in connection with the Work, and shall 
         provide all protection to prevent injury to all persons involved in 
         any way in the Work and all other persons, including without 
         limitation, the employees, agents, guests, visitors, invitees and 
         licensees of the Owner who may visit or be affected thereby. These 
         precautions shall include, but in no event be limited to: the 
         posting of danger signs and personal notification to all affected 
         persons of the existence of a hazard of whatever nature; the 
         furnishing and maintaining of necessary traffic control barricades 
         and flagman services; the use, or storage, removal and disposal of 
         required explosives or other hazardous materials only under the 
         supervision of qualified personnel and after first obtaining 
         permission of all applicable governmental authorities; and the 
         maintenance of adequate quantities of both hose and operable fire 
         extinguishers at the Job Site. The Contractor shall set forth in 
         writing its safety and anti-substance abuse precautions and programs 
         in connection with the Work and, if requested by the Owner, submit 
         the same to the Owner for review. The Owner may, but shall not be 
         obligated to, make suggestions and recommendations to the Contractor 
         with respect thereto.
         
         10.1.2   All Work and not design (unless Contractor, any 
         Subcontractor, and/or any of their respective agents, 
         representatives, suppliers or any other person or entity directly or 
         indirectly employed, utilized and/or controlled by any of them 
         prepared the design), whether performed by the Contractor, its 
         Subcontractors or Sub-subcontractors, or anyone directly or 
         indirectly employed by any of them, and all equipment, appliances, 
         machinery, materials, tools and like items incorporated or used in 
         the Work, shall be in compliance with, and conform to: (a) all 
         applicable laws, ordinances, rules, regulations and orders of any 
         public, quasi-public or other governmental authority relating to the 
         safety of persons and their protection against injury, specifically 
         including, but in no event limited to, the Federal Occupational 
         Safety and Health Act of 1970, as amended, and all rules and 
         regulations now or hereafter in effect pursuant to said Act; and (b) 
         all codes, rules, regulations and requirements of the Owner and its 
         insurance carriers relating thereto. In the event of conflicting 
         requirements, the more stringent shall govern.
         
         10.1.3   The Contractor shall designate a responsible member of its 
         organization at the Job Site as the Project Safety Officer, whose 
         duties it shall be to enforce the Contractor's safety and 
         anti-substance abuse programs, to assure compliance with 
         Subparagraph 10.1.2 and to prevent accidents. This person shall be 
         the Contractor's Project Manager unless otherwise designated in 
         writing by the Contractor and approved by the Owner. The Contractor 
         shall further cause each of its Subcontractors and 
         Sub-subcontractors to designate a responsible supervisory 
         representative to assist the Contractor's Project Safety Officer 
         representative in the performance of his or her duties as aforesaid.
         
         10.1.4   Should the Contractor fail to provide a safe area for the 
         performance of the Work or any portion thereof, the Owner shall have 
         the right, but not the obligation, to suspend Work in the unsafe 
         area. All costs of any nature (including overtime pay) resulting 
         from the suspension, by
         
                                              16
<PAGE>

         whomsoever incurred shall be borne by the Contractor.

         10.1.5   The Contractor shall provide to each worker on the Job Site 
         the proper safety equipment for the duties being performed by that 
         worker and will not permit any worker on the Job Site who fails or 
         refuses to use the same. The Owner shall have the right, but not the 
         obligation, to order the Contractor to send a worker home for the 
         day or to discharge a worker for his or her failure to comply with 
         safe practices or anti-substance abuse policies, with which order 
         the Contractor shall promptly comply.

         10.1.6   The Contractor shall indemnify the Owner from and against any
         and all liability, public or private, penalties, contractual or 
         otherwise, losses, damages, costs, attorneys' fees, expenses, 
         causes of action, claims or judgments resulting either in whole or 
         in part from any failure of the Contractor, its Subcontractors or 
         Sub-subcontractors or anyone directly or indirectly employed by 
         any of them or for whose acts any of them may be liable, to comply 
         with the provisions of Paragraph 10.1. The Contractor shall not 
         be relieved of its responsibilities under this Paragraph 10.1 
         should the Owner act or fail to act pursuant to its rights 
         hereunder, nor shall the Owner thereby assume, nor be deemed to 
         have assumed, any responsibilities otherwise imposed upon the 
         Contractor by this Contract in any manner whatsoever.

10.2     PROTECTION OF WORK AND PROPERTY; RESPONSIBILITY FOR LOSS.

         10.2.1   The Contractor shall, throughout the performance of the
         Work, maintain adequate and continuous protection of all Work 
         and temporary facilities against loss or damage from whatever 
         cause, shall protect the property of the Owner and third parties 
         from loss or damage from whatever cause arising out of the 
         performance of the Work and shall comply with the requirements 
         of the Owner and its insurance carriers and with all applicable 
         laws, codes, rules and regulations with respect to the 
         prevention of loss or damage to property as a result of fire or 
         other hazards. The Owner may, but shall not be required to, 
         make periodic patrols of the Job Site as a part of its normal 
         security program. In such event, however, the Contractor shall not 
         be relieved of its aforesaid responsibilities.

         10.2.2   Until final acceptance of the Work by the Owner pursuant to
         Paragraph 9.4 (unless and to the extent otherwise set forth in a 
         Certificate of Substantial Completion) the Contractor shall 
         have full and complete charge and care of and, except as otherwise 
         provided in this Subparagraph 10.2.2, shall bear all risk of loss 
         of, and injury or damage to, the Work or any portion thereof 
         (specifically including Owner-furnished supplies, equipment or 
         other items to be utilized in connection with, or incorporated 
         in, the Work) from any cause whatsoever. The Contractor shall 
         rebuild, repair, restore and make good all losses of, and 
         injuries or damages to, the Work or any portion thereof before 
         final acceptance of the Work. Such rebuilding, repair or 
         restoration shall be at the Contractor's sole cost and expense 
         unless the loss, injury or damage requiring such rebuilding, 
         repair or restoration: (a) is directly due to errors in the 
         Contract Documents which were not discovered by the Contractor and 
         which the Contractor could not have discovered through the 
         exercise of due diligence; (b) is caused by the Owner (unless (i) 
         the Contractor has waived its rights of subrogation against the 
         Owner on account thereof as provided in the Contract Documents, 
         or (ii) such loss or damage would be covered by any policy or 
         policies of insurance which the Contractor is required to 
         maintain hereunder, whether the Contractor actually maintains 
         such insurance or not, or (iii) is otherwise covered by a policy 
         or policies of insurance maintained by the Contractor, whether 
         or not required hereunder); or (c) is caused by a hazard against 
         which the Owner is required to insure under the provisions of 
         Article 11 hereof; provided, however, that if the loss, injury or 
         damage would not have occurred but for an act or omission of the 
         Contractor, any of its Subcontractors of Sub-subcontractors or 
         anyone directly or indirectly employed by any of them or for whose 
         acts any of them may be liable, the rebuilding, repair or 
         restoration shall be at the Contractor's cost and expense to the 
         extent of the deductible on said insurance.

10.3     EMERGENCIES. In any emergency affecting the safety of persons or
property, or in the event of a claimed violation of any federal or state 
safety or health law or regulation, arising out of or in any way connected 
with the Work or its performance, the Contractor shall act immediately to 
prevent threatened damage, injury or loss or to remedy said violation, 
whichever is applicable, failing which the Owner may immediately take 
whatever action it reasonably deems necessary, including, but not limited to, 
suspending the Work as provided in Paragraph 8.4. The Owner may deduct or 
offset any and all costs or expenses of whatever nature, including attorneys' 
fees, paid or incurred by the Owner in taking such option against any sums 
then or thereafter due to the Contractor. The Contractor shall indemnify the 
Owner against any and all costs of or expenses incurred pursuant to this 
Paragraph 10.4. If the Contractor shall be entitled to any additional 

                                      17
<PAGE>


compensation or extension of time claimed on account of emergency work not 
due to the fault or neglect of the Contractor or its Subcontractors or 
Sub-subcontractors, it shall be handled as a claim as provided in Article 13.

10.4     CLEANUP. The Contractor shall at all times keep the Job Site clean 
and free from accumulation of waste materials or rubbish (including, without 
limitation, hazardous waste) caused by or during the performance of the Work 
and shall continuously throughout performance of the Work remove and dispose 
of all such materials from the Job Site and the Project. The Owner may 
require the Contractor to comply with such standards, means and methods of 
cleanup, removal or disposal as the Owner may make known to the Contractor. 
In the event the Contractor fails to keep the Job Site clean and free from 
such waste or rubbish, or to comply with such standards, means and methods, 
the Owner may take such action and offset any and all costs or expenses of 
whatever nature paid or incurred by the Owner in undertaking such action 
against any sums then or thereafter due to the Contractor. The Contractor 
shall notify the Owner in advance of the generation, importation, storage, 
transportation, excavation or disposal, of any hazardous waste, toxic 
materials to contaminants of any type in connection with the Project.

10.5     OWNER'S STANDARDS. The Owner reserves the right, but assumes no 
duty, to establish and enforce standards, and to change the same from time to 
time, for the protection of persons and property, with which the Contractor 
shall comply, and to review the efficiency of all protective measures taken 
by the Contractor. The exercise of or failure to exercise any or all of these 
acts by the Owner shall not relieve the Contractor of its duties and 
responsibilities under this Contract, and the Owner shall not thereby assume, 
not be deemed to have assumed, any such duties or responsibilities of the 
Contractor.



                                   ARTICLE 11
                                   INSURANCE



11.1     INSURANCE PROVIDED BY OWNER. The contractor, its subcontractors and
sub-subcontractors hereby waive all rights which they, or any of them, may at
any time, have against the Owner, the Owner's Representative, their respective
parent companies and partnerships, the subsidiary, related and affiliated
companies and partnerships of each and the officers, directors, agents,
employees, partners, and assigns of each, for damages caused by fire or other
perils to the extent covered by the insurance provided by the Owner (but not
their entitlement to any proceeds thereof).

11.2     CONTRACTOR'S INSURANCE.

         11.2.1   Contractor shall, without in any way altering Contractor's 
         liability under the Contract or applicable law, obtain, pay for and 
         maintain insurance for the coverages and amounts of coverage not 
         less than those set forth below in the Schedule of Insurance 
         Coverages (Paragraph 11.2) with insurers licensed to do business in 
         the jurisdiction in which the Project is located and shall provide 
         to Owner certificates issued by such insurance companies 
         satisfactory to Owner to evidence such coverage before any Work 
         commences at the job site. Such certificates shall provide that 
         there shall be no termination, nonrenewal, modification or 
         expiration of such coverage without thirty (30) days' prior written 
         notice to Owner (except in the case of non-payment of premium, in 
         which case the certificate must require at least ten (10) days' 
         prior written notice to Owner before the coverage is terminated 
         (Contractor represents and warrants that it shall not default on 
         its obligation to make any premium payments). In the event of any 
         failure by Contractor to comply with the provisions of this 
         Paragraph 11.2, (i) Owner may, at its option, on notice to 
         Contractor, suspend the Contract for cause until there is full 
         compliance with this Paragraph 11.2 and/or terminate the Contract 
         for cause or (ii) Owner may purchase such insurance at Contractor's 
         expense, provided that Owner shall have no obligation to do so and 
         if Owner shall do so, Contractor shall not be relieved of or 
         excused from the obligation to obtain and maintain such insurance 
         amounts and coverages. Contractor shall provide to Owner a 
         certified copy of any and all applicable insurance policies upon 
         request of the Owner. Timely renewal certificates will be provided 
         to Owner as coverage renews.

         11.2.2   The Indemnitees shall be named as additional insureds on each
         insurance policy required by this Article 11 (other than workers' 
         compensation insurance) through an endorsement thereto which 
         provides for no different coverage to the Indemnitees than to the 
         Contractor. The additional insured endorsements shall provide the 
         following: (i) that the coverages afforded the additional insureds 
         will be primary insurance for the additional insureds with respect 
         to claims arising out of operations performed by or on behalf of the 
         Contractor, (ii) that the coverages afforded the additional insureds 
         shall not exclude claims asserted by the Contractor's employees, 
         (iii) that if the additional insureds have other insurance which is 
         applicable to a loss, such other insurance will be on an excess or 

                                      18
<PAGE>


         contingent basis, (iv) that the amount of the insurance company's 
         liability under the insurance policy will not be reduced by the 
         existence of such other insurance and (v) that the additional 
         insureds will be given not less than thirty (30) days prior written 
         notice of the material modification or cancellation thereof (except 
         in the case of non-payment of premium, in which case the 
         endorsements must require at least ten (10) days' prior written to 
         notice to the Indemnitees before the coverage is materially modified 
         or canceled (Contractor represents and warrants that it shall not 
         default on its obligation to make any premium payments). Before any 
         Work commences at the job site, Contractor shall provide to Owner 
         certificates of insurance satisfactory to Owner to evidence 
         Contractor's compliance with the requirements of this Paragraph 
         11.2.2, The Indemnitees shall not, by reason of their inclusion as 
         additional insureds or otherwise, have any liability for the 
         payments of any deductibles or premiums.

         11.2.3   Insurance of the types required of Contractor hereunder shall
         be provided by all Subcontractors, or provided by Contractor on behalf
         of all Subcontractors, to cover their operations performed under the 
         Contract Documents. Contractor shall be held responsible for any 
         modification in these insurance requirements as they apply to 
         Subcontractors. Contractor shall maintain Certificates of Insurance 
         from all Subcontractors, enumerating, among other things, the 
         waivers in favor of, and insured status of, the Indemnitees, as 
         required herein, and make them available to Owner upon request.

         11.2.4   In the event Contractor fails to obtain the required 
         certificates of insurance from any Subcontractor and a claim is made 
         or suffered, the Contractor shall indemnify, defend and hold 
         harmless Owner, Owner's constituent partners, the parent companies 
         and affiliates of Owner and of any constituent partner, and 
         Architect and, to the extent applicable, their respective 
         shareholders, officers, directors, agents and employees parties from 
         any and all claims for which the required insurance would have 
         provided coverage. This indemnity obligation is in addition to any 
         other indemnity obligation provided in the Contract.

         11.2.5   The term "Subcontractor(s)" for the purposes of 
         this Article 11 shall include all Subcontractors and 
         Sub-subcontractors.

11.3     SCHEDULE OF INSURANCE COVERAGES.

         11.3.1   WORKERS' COMPENSATION.

         Workers' Compensation                 Statutory Limits
         Employer's Liability                  $500,000

         The policy shall include a Waiver of Subrogation in favor of the
         Indemnitees.

         11.3.2   COMMERCIAL GENERAL LIABILITY.

         Bodily Injury/Property                $1,000,000 each
         Damage                                occurrence, or
         (occurrence Basis)                    equivalent, subject to
                                               a $2,000,000 general
                                               aggregate applicable
                                               to the Project

         This policy shall be on a form acceptable to Owner and shall include
         the following coverages:

                  11.3.2.1      Premises/Operations

                  11.3.2.2      Independent Contractors

                  11.3.2.3      Completed Operations (This coverage shall be 
                  renewed by the original insurance company or provided by 
                  another insurance company so that coverage is maintained for 
                  a period of not less than two years following the acceptance 
                  of Contractor's Work)

                  11.3.2.4      Broad Form Contractual Liability specifically 
                  in support of, but not limited to, the Indemnity sections of 
                  the Contract

                  11.3.2.5      Broad Form Property Damage

                  11.3.2.6      Personal Injury Liability with employees and 
                  contractual exclusions removed

                  11.3.2.7      Delete Exclusions relative to Collapse, 
                  Explosion and Underground Property Damage Hazards

         11.3.3   COMPREHENSIVE AUTOMOBILE LIABILITY.

                  11.3.3.1                              Bodily Injury
                                                $1,000,000 per person
                                              $1,000,000 per accident

                  11.3.3.2                            Property Damage
                                             $1,000,000 per accident,
                                                        or equivalent

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<PAGE>


                  This policy shall be on a standard form written to cover all
                  owned, hired and non-owned automobiles.

         11.3.4   UMBRELLA EXCESS LIABILITY INSURANCE.

         Bodily Injury/                     $5,000,000 per occurrence
         Property Damage                         $5,000,000 aggregate
         (Occurrence Basis)

         This policy shall be written on an umbrella excess basis above
         coverages as described in 11.3.1, 11.3.2 and 11.3.3 above. In addition,
         the policy shall be endorsed to provide defense coverage obligations
         and shall follow the form of the underlying coverages.

         11.3.5   BUILDER'S RISK INSURANCE. Contractor shall maintain, at its 
         sole expense, all-risk builder's risk insurance as follows:

                  11.3.5.1 Contractor shall carry completed value from 
                  builder's risk property insurance (subject to a deductible 
                  per loss not to exceed $2,500.00) upon the entire Work for 
                  100% of the full replacement cost value thereof (100% 
                  includes additional costs of architectural and engineering 
                  services in the event of a loss). This policy shall include 
                  the interests of the Owner and the other Indemnitees, 
                  Contractor, and Subcontractors in the work as named 
                  insureds, as their interests may appear, and shall be on an 
                  "All Risk" basis for physical loss or damage including, 
                  without limitation, fire, flood, earthquake, subsidence, 
                  hail, theft, vandalism and malicious mischief and shall 
                  include coverage for portions of the Work while it is 
                  stored off the site or is in transit. This policy shall 
                  provide, by endorsement or otherwise, that Contractor shall 
                  be solely responsible for the payment of all premiums under 
                  the policy, and that Owner and the other Indemnitees shall 
                  have no obligation for the payment thereof, notwithstanding 
                  that Owner and the other Indemnitees are named as insureds 
                  under the policy. Any insured loss or claim of loss shall 
                  be adjusted by the Owner and any settlement payments shall 
                  be made payable to the Owner as trustee for the insureds, 
                  as their interests may appear, subject to the requirements 
                  of any applicable mortgage clause. Upon the occurrence of 
                  an insured loss or claim of loss, monies received will be 
                  held by Owner who shall make distribution in accordance 
                  with an agreement to be reached in such event between Owner 
                  and Contractor, If the parties are unable to agree between 
                  themselves on the settlement of the loss, such dispute 
                  shall be submitted to a court of competent jurisdiction to 
                  determine ownership of the disputed amounts but the Work of 
                  the Project shall nevertheless progress during such period 
                  of dispute without prejudice to the rights of any party to 
                  the dispute. The Contractor shall be responsible for any 
                  loss within the deductible area of the policy.

         11.3.6   BROAD FORM BOILER AND MACHINERY INSURANCE. Contractor shall
         maintain, at its sole expense, such boiler and machinery insurance as
         may be required by the Contract Documents or by law.

11.4     CONTRACTOR'S EQUIPMENT POLICY. Any such insurance policy covering
Contractor's or its Subcontractors' or Sub-subcontractors' equipment against 
loss by physical damage shall include an endorsement waiving the insurer's 
right of subrogation against the Indemnitees. Such insurance shall be 
Contractor's and its Subcontractors' sole and complete means of recovery for 
any such loss. Should Contractor or its Subcontractors choose to self-insure 
this risk, it is expressly agreed that the Contractor and its Subcontractors 
hereby waive any claim for damage or loss to said equipment in favor of the 
Indemnitees.

11.5     RELEASE OF WAIVER--Contractor hereby releases, and shall cause its 
Subcontractors to release, Owner and the other Indemnitees from any and all 
claims or causes of action whatsoever which Contractor and/or its 
Subcontractors might otherwise possess resulting in or from or in any way 
connected with any loss covered or which should have been covered by 
insurance, including the deductible portion thereof, maintained and/or 
required to be maintained by Contractor and/or its Subcontractors pursuant to 
the Contract Documents.

11.6     CLAIMS MADE POLICIES.. With respect to any of the insurance policies
provided by Contractor pursuant to the Contract Documents which are "Claims 
made" policies, in the event that at any time such policies are canceled or 
not renewed, Contractor shall provide a substitute insurance policy(ies) with 
terms and conditions and in amounts which comply with the terms of the 
Contract Documents and which provides for retroactive coverage to the date of 
cancellation or non-renewal to fill any gaps in coverage which may exist due 
to the cancellation or non-renewal of the prior "claims made" policies. With 
respect to all "claims made" policies which are renewed, Contractor shall 
provide coverage retroactive to the date of 

                                      20
<PAGE>


commencement of the Work in said renewed policy. All said substitute or 
renewed "claims made" policies shall be maintained in full force and effect 
for the longer of (I) two (2) years from the date of completion of the Work 
or (ii) as otherwise required by the Contract Documents. A certificate 
evidencing continuation of such policies shall be submitted with the final 
Application of Payment as required by Article 9.1.2. Nothing herein shall 
affect the continuing effectiveness of the indemnity clauses in the Contract 
Documents..

11.7     INDEMNIFICATION. With the exception that this Paragraph 11.7 shall 
in no event be construed to require indemnification by Contractor to a 
greater extent than permitted under the public policy of the state where the 
Project is located, Contractor shall indemnify, defend (if required by Owner 
and with Counsel selected by Owner), and hold Owner, and the Owner's 
Representative, the parent, subsidiary, related and affiliated companies or 
partnerships of each and the officers, directors, agents, employees, partners 
and assigns of each, harmless from and against any and all claims, demands, 
suits, judgments, losses or expenses of any nature whatsoever (including 
actual attorney's fees) ("Claims") arising directly or indirectly, in whole 
or in part, from or out of any:

(a)      Act or omission of Contractor, its officers, directors, agents, 
         employees, any contractor, subcontractor or subconsultant of any 
         tier, anyone directly or indirectly employed by any of them or 
         anyone for whose acts any of them may be liable;

(b)      Personal injury, including but not limited to, bodily injury, 
         emotional injury, sickness or disease, or death to persons, 
         including but not limited to any employees or agents of Contractor, 
         Owner or any independent contractor, subcontractor or 
         sub-subcontractor and/or damage to property of anyone (including 
         loss of use thereof), caused or alleged to be caused in whole or in 
         part by any negligent act or omission of Contractor, or anyone 
         directly or indirectly employed or engaged by Contractor, 
         contracting or subcontracting by or under Contractor, or anyone or 
         whose acts Contractor may be liable, regardless of whether such 
         personal injury or damage is caused in part by a party indemnified 
         hereunder;

(c)      Penalties imposed on account of the violation of any law, order, 
         citation, rule, regulation, standard, ordinance or statute, caused 
         by the action or inaction of Contractor, anyone directly or 
         indirectly employed or engaged by Contractor or contracting or 
         subcontracting by or under Contractor or anyone for whose acts 
         Contractor may be liable;

(d)      Infringement of any patent, trademark, or copyright, or violation of 
         trade secret or other proprietary right by any structure or 
         equipment, contracted, modified or incorporated by or on behalf of 
         the Owner pursuant to this Contract;

(e)      Any failure of Contractor or any of its subcontractors or 
         subconsultants of any tier to perform and complete the Work in 
         strict compliance with the Contract Documents (unless such failure 
         has been specifically and expressly waived by the Owner in writing);

(f)      Failure of Contractor to comply with the insurance provisions of 
         this Paragraph 11.7;

(g)      Any breach by Contractor of any of its duties, obligations or 
         representations and warranties contained in the Contract. The 
         indemnification provisions of this Paragraph 11.7 shall extend to 
         Claims occurring after this Contract is terminated as well as while 
         it is in force. Such indemnity provisions apply regardless of any 
         active and/or passive negligent act by omission or Owner, its 
         agents, independent contractors or employees. Contractor, however, 
         shall not be obligated under this Contract to indemnify Owner for 
         claims arising from the sole negligence or willful misconduct of 
         Owner or its agents, employees or independent contractors who are 
         directly responsible to Owner, or for defects in design furnished by 
         such persons. The indemnities set forth in this Paragraph 11.7 shall 
         not be limited by the insurance requirements contained herein. The 
         provisions of this paragraph shall survive the expiration or sooner 
         termination of the Contract.



                                   ARTICLE 12
                               CHANGES IN THE WORK



12.1     CHANGE ORDERS AND DIRECTIVES. The Owner may, without affecting the 
validity of the Contract Documents or any term or condition thereof, issue 
Change Orders or Directives or give other orders and instructions regarding 
the Work which may have the effect of ordering extra work or other changes in 
the Work by altering, adding to or deducting from the Work, modifying the 
method or manner of its performance or otherwise (herein sometimes referred 
to as "Changes in the Work"). In any such event, the Contract Sum shall, 
where applicable, be increased or decreased in the manner hereinafter set 
forth; provided, however, that if the Contractor should proceed with a 

                                      21
<PAGE>


Change in the Work upon an oral order, by whomsoever given, it shall 
constitute a waiver by the Contractor of any claim for an increase in the 
Contract Sum or extension of the Contract Time on account hereof. All Changes 
in the Work shall be performed in accordance with the Contract Documents.

12.2     CHANGES REQUIRING AN INCREASE IN CONTRACT SUM. If any Change in the 
Work will result in an increase in the Contract Sum, the Owner shall have the 
right to require the performance thereof on a lump sum basis, a unit price 
basis or a time and material basis, all as hereinafter more particularly 
described.

         12.2.1   LUMP SUM BASIS. If the Owner elects to have any Change in the 
         Work performed on a lump sum basis, its election shall be based on a 
         lump sum proposal which shall be submitted by the Contractor to the 
         Owner within the time established by the Owner in the Owner's request 
         therefor. The Contractor's proposal shall be itemized and segregated 
         by labor and materials for the various components of the Change in 
         the Work and shall be accompanied by signed proposals of any 
         Subcontractors or Sub-subcontractors who will perform any portion of 
         the Change in the Work and of any persons who will furnish materials 
         or equipment for incorporation therein. The portion of the proposal 
         relating to labor, whether by the Contractor's forces or those of 
         its Subcontractors or Sub-subcontractors, may only include 
         reasonably anticipated gross wages of Job Site labor, including 
         foremen, who will be directly involved in the Change in the Work, 
         plus payroll costs (including Social Security, federal or state 
         unemployment insurance taxes and fringe benefits in connection with 
         such labor required by union and/or trade agreements if applicable) 
         and up to ten percent (10%) of such anticipated gross wages, but not 
         payroll costs, as overhead and profit for any such entity actually 
         performing the Change in the Work or a portion thereof. The portion 
         of the proposal relating to materials may only include the 
         reasonably anticipated direct costs to the Contractor, its 
         Subcontractors or Sub-subcontractors of materials to be purchased 
         for incorporation in the Change in the Work, plus transportation and 
         applicable sales or use taxes, and up to ten percent (10%) of said 
         direct material costs as overhead and profit for the entity actually 
         supplying the materials. The proposal may further include the 
         Contractor's or its Subcontractor's or Sub-subcontractor's 
         reasonably anticipated direct rental costs in connection with the 
         Change in the Work (either actual rates or discounted local 
         published rates), plus up to six percent (6%) thereof as overhead 
         and profit for the entity actually incurring such costs. If any of 
         the items included in the lump sum proposal are covered by unit 
         prices contained in the Contract Documents, the Owner may elect to 
         use these unit prices in lieu of the similar items included in the 
         lump sum proposal, in which event an appropriate deduction will be 
         made in the lump sum amount prior to the application of any allowed 
         overhead and profit percentages. No overhead and profit shall be 
         applied to any unit prices.

         12.2.2   INTENTIONALLY OMITTED.

         12.2.3   TIME AND MATERIAL BASIS. If the Owner elects to have the 
         Change in the Work performed on a time and material basis, the same 
         shall be performed, whether by the Contractor's forces or the forces 
         of any of its Subcontractors or Sub-subcontractors, at actual cost to 
         the entity performing the Change in the Work (without any charge for 
         administration, clerical expense, supervision or superintendence of 
         any nature whatsoever, except foremen directly involved in the 
         Change in the Work, or the cost, use or rental of small tools 
         defined as tools with a cost or value of less than $1,000, or 
         equipment owned by the Contractor or any of its related or 
         affiliated companies), plus ten percent (10%) of gross wages 
         (excluding payroll costs) of Job Site labor and direct material 
         costs and six percent (6%) of rental costs (other than small tools 
         defined as tools with a cost or value of less than $1,000, or 
         equipment owned by the Contractor or any of its related or 
         affiliated companies) as the total overhead and profit. The 
         Contractor shall submit to the Owner daily time and material 
         tickets, to include the identification number assigned to the Change 
         in the Work, the location and description of the Change in the Work, 
         the classification, names and social security numbers of labor 
         employed, the materials used, the equipment rented (not tools) and 
         such other evidence of cost as the Owner may require. The Owner may 
         require authentication of all time and material tickets and invoices 
         by persons designated by the Owner for such purpose. The failure of 
         the Contractor to secure any required authentication shall, if the 
         Owner elects to treat it as such, constitute a waiver by the 
         Contractor of any claim for the cost of that portion of the Change 
         in the Work covered by a non-authenticated ticket or invoice; 
         provided, however, that the authentication of any such ticket or 
         invoice by the Owner shall not constitute an acknowledgment by the 
         Owner that the items thereon were reasonably required for the Change 
         in the Work.

         12.2.4   The Owner shall have no obligation or liability on account of
         a Change in the Work except as specifically provided in this Paragraph

                                      22
<PAGE>


         12.2. If the Contractor fails to render any proposal within ten (10) 
         days after the date of the Owner's request pursuant to this 
         Paragraph 12.2 or such longer period of time established by the 
         Owner in its request, the Owner may issue a unilateral Change Order 
         for any such Change in the Work giving the Owner's reasonable 
         estimate of the cost of the Change, which shall become automatically 
         binding upon the Contractor. Overhead and profit, as allowed under 
         this Paragraph 12.2, shall be deemed to cover all costs and expenses 
         of any nature whatsoever including, without limitation, those for 
         clean-up, protection, supervision, estimating, field operations, 
         impacts, inefficiency, extended (Job Site and home office) overhead, 
         unabsorbed (Job Site and home office) overhead, delays, acceleration 
         (actual or constructive), ripple effect, small tools and security, 
         which the Contractor or any of its Subcontractors of 
         Sub-subcontractors may incur in the performance of or in connection 
         with a Change in the Work and which are not otherwise specifically 
         recoverable by them pursuant to this Paragraph 12.2.

         12.2.5   The Work pursuant to this Contract shall be performed by the
         Contractor at no extra cost to the Owner despite any order from the 
         Owner which designates or contemplates a portion of the Work as a 
         Change in the Work.

12.3     CHANGES REQUIRING A DECREASE IN CONTRACT SUM. If any Change in the 
Work will result in a decrease in the Contract Sum, the Owner may request a 
quotation by the Contractor of the amount of such decrease for use in 
preparing a Change Order. The Contractor's quotation shall be forwarded to 
the Owner within ten (10) days after the date of the Owner's request of such 
longer period of time established by the Owner therein and, if acceptable to 
the Owner, shall be incorporated in the Change Order. If not acceptable, the 
parties shall make every reasonable effort to agree as to the amount of such 
decrease, which may be based on a lump sum properly itemized, on unit prices 
stated in the Contract Documents and/or on such other basis as the parties 
may mutually determine. If the parties are unable to so agree, the amount of 
such decrease shall be the total of the estimated reduction in the actual 
cost of the Work, as determined by the Owner's Representative in its 
reasonable judgment. If the Contractor fails to render any proposal within 
the time required herein, the Owner may issue a unilateral deductive Change 
Order giving the Owner's reasonable estimate of the deductive Change, which 
shall become automatically binding upon the Contractor.

12.4     DISPUTES REGARDING CHANGES. If any dispute should arise between the 
parties with respect to an increase or decrease in the Contract Sum as a 
result of a Change in the Work, the Contractor shall not suspend performance 
of any such Change in the Work or the Work itself unless otherwise so ordered 
by the Owner in writing. The Owner may, however, notify the Contractor of its 
determination regarding any such Change and, in the case of an increase, may 
thereafter pay to the Contractor up to 50% of the Owner's reasonable estimate 
of the value of the Change in the Work as its sole obligation with respect to 
any such Change pending resolution of the dispute. The Contractor shall 
thereafter be subject to the terms of Paragraph 13.2 regarding its claims for 
any difference.

12.5     AUDIT RIGHTS. Where the Work performed is done pursuant to payment 
based upon a negotiated, time and material or cost plus basis, then the 
Contractor shall afford, access to the Owner at all reasonable times to any 
accounting books and records, correspondence, instructions, invoices, 
receipts, vouchers, memoranda and other records of any kind relating to the 
Work, all of which each of them shall maintain for a period of at least four 
(4) years from and after the Date of Substantial Completion. The Contractor 
shall make the same available for inspection, copying and audit, in 
accordance with general accepted accounting standards, within three (3) days 
following notification to the Contractor of the Owner's intent to audit, 
failing which any claims for an increase in the Contract Sum and/or extension 
of the Contract Time, as applicable, shall be waived.



                                   ARTICLE 13
                                     CLAIMS



13.1     CLAIMS FOR EXTENSIONS OF CONTRACT TIME. No claim by the Contractor 
for an extension of the Contract Time or any Milestones shall be considered 
unless made in accordance with this Paragraph 13.1. The Contractor shall not 
be entitled to any extension of the Contract Time or any milestones as a 
result of any cause unless it shall have given written notice to the Owner 
pursuant to Paragraph 16.3, within fourteen (14) days following the 
commencement of each such condition or cause of the occurrence and probable 
duration thereof. The Contractor hereby waives any claims for any such 
extensions not timely made in accordance herewith.

13.2     CLAIMS FOR INCREASES IN CONTRACT SUM. Except as otherwise provided 
in Paragraph 12.2, no claim by the Contractor for an increase in the Contract 
Sum shall be considered unless made in accordance with this Paragraph. The 
Contractor shall give the Owner written notice of any such claim not later 
than fourteen (14) days after the occurrence of the event giving rise to the 
claim (including, without limitation, any Owner determination pursuant to 

                                      23
<PAGE>


Paragraph 12.4), but (except in the event of emergencies pursuant to 
Paragraph 10.3) prior to the incurring of any expenses by the Contractor. 
Failure to give such notice shall constitute a waiver of the claim including, 
but not limited to, any and all damages, cost, impacts, inefficiency, 
extended overhead, unabsorbed overhead, ripple effect, or expenses of any 
nature whatsoever which the Contractor, or its Subcontractors or 
Sub-subcontractors, may suffer or incur. Claims shall be made in writing and 
shall identify the instructions or other circumstances that are the basis of 
the claim and shall set forth the Contractor's best estimate of the dollar 
amount claimed. No claim shall be considered by the Owner if the Contractor 
has otherwise waived its rights to file a claim pursuant to the Contract 
Documents..

13.3     RESOLUTION OF CLAIMS.. The Architect will review Claims and within 
ten (10) days after receipt of a Claim will either (i) reject the Claim in 
whole or in part, (ii) recommend approval of the Claim in whole or in part, 
(iii) request the claimant provide additional information in support of the 
Claim, or (iv) suggest a compromise. The Architect's action under the 
preceding sentence shall be promptly reported to the Owner and the 
Contractor. If a Claim is not resolved after consideration of the foregoing 
and of any further evidence provided to the Architect, the claimant shall be 
entitled to pursue its Claim in any lawful manner, subject to any limitations 
contained in the Contract Documents, if any. The foregoing notwithstanding, 
none of Architect's decisions or recommendations with respect to Claims or 
any other matters will be binding on Owner or Contractor unless Owner and 
Contractor otherwise mutually agree in writing.

13.4     NO OTHER CLAIMS. The parties acknowledge that the provisions of 
Paragraphs 13.1 and 13.2 are included herein for the purpose of fixing and 
limiting the time within which, and the manner in which claims must be made; 
and that Paragraphs 13.1 and 13.2 do not grant to the Contractor any right to 
increase in the Contract Sum, or extensions in the Contract Time or any 
Milestones, not otherwise permitted or provided by the other terms and 
provisions of the Contract Documents.

13.5     NO ARBITRATION. Owner and Contractor hereby agree that no claims or 
disputes between Owner and Contractor arising out of or relating to the 
Contract Documents or a breach thereof shall be decided by any arbitration 
proceeding including, without limitation, any proceeding under the Federal 
Arbitration Act (9 U.S.C. Sections 1-14), or any applicable state arbitration 
statute, except that in the event that Owner is subject to an arbitration 
proceeding related to the Project, Contractor consents to being joined in the 
arbitration proceeding if Contractor's presence is required or requested by 
Owner for complete relief to be accorded in the arbitration proceeding.



                                   ARTICLE 14
                       UNCOVERING AND CORRECTION OF WORK;
                         OWNER'S RIGHT TO CARRY OUT WORK



14.1     UNCOVERING OF WORK.

         14.1.1   If any portion of the Work should be covered contrary to the
         instructions or request of the Owner or the requirements of the 
         Contract Documents, the Contractor shall, if required by the Owner, 
         uncover such portions of the Work for the Owner's observation and 
         shall replace such Work, all at the Contractor's sole expense.

         14.1.2   If any portion of the Work should be covered prior to a 
         specific request for observation or instruction by the Owner, the 
         Owner may request to see such Work, and it shall be uncovered by the 
         Contractor. If such Work is found to be in accordance with the 
         Contract Documents and without defect, the cost of uncovering and 
         replacement shall, by appropriate Change Order, be charged to the 
         Owner. If such work is found to be defective or not in accordance 
         with the Contract Documents, the Contractor shall bear such costs; 
         provided, however, that if it is found that the condition was caused 
         by a Separate Contractor employed as provided in Article 7, the 
         Contractor shall have the right to seek reimbursement of the costs 
         it incurs as aforesaid from said Separate Contractor.

14.2     CORRECTION OF WORK.

         14.2.1   The Owner shall have the authority to reject any portion of 
         the Work which is defective or does not conform to the Contract 
         Documents, and the Contractor shall promptly correct all Work so 
         rejected by the Owner, whether observed before or after the Date of 
         Substantial Completion and whether or not fabricated, installed or 
         completed. In order that such corrective work shall not interrupt or 
         delay the Owner's schedule for completion of the Project or, if 
         applicable, disturb the occupants of the completed Project, the 
         Contractor shall perform such work according to a schedule therefor 
         established by the Owner (which may provide that the same be 
         performed on overtime, shift 

                                      24
<PAGE>


         work, Saturdays, Sundays and/or holiday), utilizing in the 
         performance thereof such manpower as is necessary to complete the 
         corrective Work in accordance with said schedule. The Contractor 
         shall bear all costs of correcting such rejected Work, including, 
         without limitation, compensation for any additional architectural 
         and engineering services made necessary thereby.

         14.2.2   If, within one (1) year after the Date of Substantial 
         Completion of the Work or within such longer period of time as may 
         be prescribed by law or by the terms of any applicable warranty or 
         guarantee required by the Contract Documents, any of the Work is 
         found to be defective or not in accordance with the Contract 
         Documents, the Contractor shall correct it promptly after receipt of 
         written instructions to that effect from the Owner unless the Owner 
         has previously given the Contractor a written acceptance of such 
         condition.

         14.2.3   The Contractor shall remove from the Job Site all Work 
         which is defective or non-conforming and not corrected under 
         Paragraph 5.3 or Subparagraphs 14.2.1 or 14.2.2 unless removal is 
         waived by the Owner.

         14.2.4   The Contractor shall bear the cost of making good all work 
         of Separate Contractors (and any of the Owner's other structures or 
         facilities) destroyed or damaged by such removal or correction.

         14.2.5   If the Contractor does not remove such uncorrected 
         defective or non-conforming Work within a reasonable time fixed by 
         written instructions to that effect from the Owner, the Owner may 
         remove it and store the materials and equipment at the expense of 
         the Contractor. If the Contractor does not pay the cost of such 
         removal and storage within ten (10) days thereafter, the Owner may, 
         upon ten (10) additional days written notification to the 
         Contractor, sell such materials and equipment at public or private 
         sale and account to the Contractor for the net proceeds thereof, 
         after deducting all the costs that should have been borne by the 
         Contractor, including compensation for any additional architectural 
         and engineering services and attorneys' fees made necessary thereby. 
         If such proceeds of sale do not cover all costs which the Contractor 
         should have borne, the difference shall be deducted or offset 
         against any amounts then or thereafter due to the Contractor. If the 
         amounts then or thereafter due to the Contractor are not sufficient 
         to cover such difference, the Contractor shall, upon demand, pay the 
         same to the Owner. The obligations of the Contractor under this 
         Subparagraph 14.2.5 shall be in addition to, and not in limitation 
         of, any obligations imposed on it by law, by any other provision of 
         this Contract or by any warranty or guarantee under this Contract.

         14.2.6   If the Contractor fails to correct any defective or 
         non-conforming Work, the Owner may correct it in accordance with 
         Paragraph 14.3. In the event of a defect found after final 
         acceptance of the Work by the Owner which the Contractor is 
         obligated to correct pursuant to Subparagraph 14.2.2, the Owner may, 
         at its option, after giving the Contractor an opportunity to correct 
         such defect, cause such corrective work to be performed by others 
         and charge the Contractor with the cost thereof. Such charge shall 
         be due and payable by the Contractor upon demand. The Contractor's 
         obligations under this Paragraph 14.2 shall survive the expiration 
         or sooner termination of this Contract.

14.3     OWNER'S RIGHT TO CARRY OUT WORK. If the Contractor defaults or 
neglects to carry out the Work in accordance with the Contract Documents or 
fails to perform any provision of this Contract, and such default, neglect or 
non-performance shall continue for a period of 48 hours after written 
notification thereof from the Owner (or if such default, neglect or 
non-performance cannot be reasonably remedied within such 48-hour period, and 
Contractor does not (in the sole determination of Owner) undertake in good 
faith the remedy of the same within said period and thereafter proceed 
diligently to completion), then the Owner may, without prejudice to any other 
remedy the Owner may have, make good such deficiencies; provided, however, 
that in the event of an emergency, as reasonably determined by the Owner, no 
notification shall be required. The Owner shall have the right to take 
possession of such portion of the Job Site as will enable it to make good 
such deficiencies and, in connection therewith, to utilize the materials, 
equipment, tools, construction equipment and machinery of the Contractor 
located on the Job Site. If the Owner makes good any such deficiencies, the 
costs of correcting the same, including compensation for additional 
architectural and engineering service made necessary by such default, neglect 
or non-performance, shall be deducted or offset against any amounts then or 
thereafter due to the Contractor. If the amounts then or thereafter due to 
the Contractor are not sufficient to cover such costs, then the Contractor 
shall, upon demand, pay the difference to the Owner.

14.4      ACCEPTANCE OF DEFECTIVE OR NON-CONFORMING WORK. If the Owner 
prefers to accept defective or non-conforming Work, it may do so instead of 
requiring its removal and correction, in which case an appropriate amount 
shall be deducted or offset against any amounts then or thereafter due to the 
Contractor; or, if the said appropriate amount of offset is determined after 
final payment (or if there is not then or thereafter due to the 

                                      25
<PAGE>


Contractor an amount sufficient to cover the deduction or offset available to 
the Owner), the Contractor shall, upon demand, pay the appropriate amount (or 
the difference after offset, as applicable) to the Owner.



                                   ARTICLE 15
                             TERMINATION OF CONTRACT



15.1     TERMINATION BY CONTRACTOR. If the Owner should, without notifying 
the Contractor of its cause for doing so, fail or refuse to approve an 
Application for Payment or make payment thereon for a period of Twenty Five 
(25) days after the same is required to be approved or paid pursuant to the 
Contract Documents, then the Contractor shall have the right, as its sole and 
exclusive remedy and upon Seven (7) days prior written notice to the Owner, 
to terminate this Contract and recover from the Owner payment for all unpaid 
Work executed up to the date of termination, including any proven loss of 
reasonable profits sustained, based upon the percentage of Work completed 
through the date of termination. If the Owner shall cure its said default 
within such fourteen (14) day period, then the Contractor's notice of 
termination shall thereby be rendered ineffective, and this Contract shall 
continue in full force and effect. Prior to termination as aforesaid, the 
Contractor shall not delay or suspend the Work in whole or in part. The 
Contractor may not terminate this Contract on the grounds that the cause 
given by the Owner for failing or refusing to pay is not in accordance with 
fact or law, it being understood and agreed that the Contractor's sole remedy 
in such event shall be to seek money damages. The Contractor acknowledges 
that it can be adequately compensated by such money damages for any breach of 
this Contract which may be committed by the Owner. Accordingly, and except as 
hereinabove provided, the Contractor expressly agrees that no default, act or 
omission of the Owner shall entitle the Contractor to cancel, rescind or 
terminate this Contract or suspend or abandon its performance of the Work.

15.2     TERMINATION BY OWNER FOR CAUSE.

         15.2.1   If the Contractor should become insolvent, file any 
         bankruptcy proceedings, make a general assignment for the benefit of 
         creditors, suffer or allow appointment of a receiver, refuse, fail 
         or be unable to make prompt payment to Subcontractors, disregard 
         applicable laws, ordinances, governmental orders or regulations or 
         the instructions of the Owner, or if the Contractor should otherwise 
         be guilty of a violation of, or in default under, any provision of 
         the Contract, then the Owner may, without prejudice to any other 
         right or remedy available to the Owner and after giving the 
         Contractor and its surety, if any, three (3) days' written notice, 
         terminate the Contract and the employment of the Contractor on the 
         Project, take possession of the Job Site and of all materials, 
         equipment, tools, construction equipment and machinery thereon owned 
         by the Contractor and finish the Work by whatever method the Owner 
         may deem expedient. In addition, without terminating this Contract 
         as a whole, the Owner may, under any of the circumstances set forth 
         above, terminate any portion of this Contract (by reducing, in such 
         manner as the Owner deems appropriate, the scope of the Work to be 
         performed by the Contractor) and complete the portion of this 
         Contract so terminated in such manner as the Owner may deem 
         expedient, taking possession of such part of the Job Site and 
         utilizing such materials, equipment, tools, construction equipment 
         and machinery owned by the Contractor as may be necessary to 
         accomplish the same. The Contractor hereby grants to the Owner the 
         further right: (a) to enter upon any premises or property other than 
         the Job Site in order to take possession of any materials, tools, 
         equipment, machinery or other items intended for incorporation in 
         the Work (or any portion thereof) or for use in the performance 
         thereof and (b) to receive an assignment of such subcontracts as the 
         Owner deems necessary or desirable at the time of termination of 
         this Contract or a portion thereof.

         15.2.2   If this Contract is terminated pursuant to Subparagraph 
         15.2.1, the Contractor shall not be entitled to receive any further 
         payment until the Work is completed, and the Owner shall have the 
         same right to retain monies owing to the Contractor as it would have 
         to retain such monies from and against final payments. Upon the 
         completion of the Work, the Owner shall make payment to the 
         Contractor, or the Contractor shall reimburse the Owner, as the case 
         may be, as provided in Article 10 of the Agreement. If a portion of 
         this Contract is terminated pursuant to Subparagraph 15.2.1, such 
         termination shall not be treated as a reduction in the scope of the 
         Work pursuant to Article 12. Rather, in such event, the Owner shall 
         deduct or offset against any monies then or thereafter due to the 
         Contractor an amount determined by the Owner to be adequate to cover 
         all costs and expenses it will incur in performing, or cause to be 
         performed, the portion of this Contract so terminated. If the 
         Owner's costs and expenses prove to be less than the amount deducted 
         or offset, the Contractor shall be entitled to the difference unless 
         otherwise provided herein. If the amount then or thereafter due to 
         the Contractor is less than the amount to be deducted or offset 
         and/or if the Owner's costs 

                                      26
<PAGE>


         and expenses prove to exceed the amount deducted or offset, the 
         Contractor shall pay the difference to the Owner upon demand.

         15.2.3   The remedies provided to the Owner in this Paragraph 15.2 
         are in addition to, and not in lieu of, any other rights or remedies 
         available to the Owner under the Contract Documents, at law or in 
         equity. In the event of any breach of this Contract by the 
         Contractor, and whether or not this Contract is terminated by the 
         Owner, the Contractor shall be liable for all damages, losses, costs 
         and expenses incurred by the Owner as a result thereof.

15.3     TERMINATION BY OWNER WITHOUT CAUSE. Without limitation to the 
provisions of Paragraph 15.2, the Owner shall have the right at any time, 
upon not less than seven (7) days notice to the Contractor to terminate this 
Contract without cause and/or for the Owner's convenience. Upon receipt of 
such notice of termination, the Contractor shall forthwith discontinue the 
Work and remove its equipment and employees from the Job Site. In the event 
of termination under this Paragraph 15.3, the Contractor shall have the 
right, as its sole and exclusive remedy, to recover from the Owner payment 
for all unpaid Work executed up to the date of termination. In addition, 
without terminating this Contract as a whole, the Owner may, for its 
convenience, terminate a portion of this Contract (by reducing, in such 
manner as the Owner deems appropriate, the scope of the Work to be performed 
by the Contractor), in which event such termination of a portion of this 
Contract shall be treated as a reduction in the scope of the Work pursuant to 
Article 12.

                                   ARTICLE 16
                            MISCELLANEOUS PROVISIONS



16.1    GOVERNING LAW. This Contract shall be governed by, and construed in 
accordance with, the laws of where the Project is located, to the exclusion 
of the rules of conflicts of laws of the state where the Project is located.

16.2     ASSIGNABILITY; SUCCESSORS AND ASSIGNS.

         16.2.1   This Contract may be assigned by Owner at any time without 
         Contractor's consent; without limiting the generality of the 
         foregoing, all warranties and guarantees in favor of Owner under the 
         Contract Documents may be assigned without Contractor's consent by 
         Owner to any party designated by Owner and such assignee may 
         directly enforce any such warranty or guarantee. The Contractor 
         shall not assign this Contract in whole or in part without the 
         written consent of the Owner, which consent the Owner may withhold 
         in its sole discretion; nor shall this Contract be assignable by the 
         Contractor by operation of law. The Contractor shall not assign any 
         monies due or to become due to it hereunder without the prior 
         written consent of the Owner.

         16.2.2   The Owner and the Contractor each binds itself and, to the 
         extent permitted herein, its successors and assigns, to the other 
         party and, to the extent permitted herein, the other party's 
         successors and assigns, in respect to all covenants, agreement and 
         obligations contained in the Contract Documents.

16.3     PERFORMANCE AND PAYMENT BONDS. Unless waived or otherwise agreed by 
the Owner, the Contractor shall furnish before commencing any Work hereunder, 
and under each continuing (on-call) Work on multiple projects or continuing 
(on-call) services as set forth in the Owner approved Work Authorization 
Forms, (and if directed by the Owner shall require all or certain of its 
Subcontractors to furnish) a bond covering the faithful performance of this 
Contract (or any such subcontract), as revised or modified from time to time, 
and a bond covering the payment of all obligations arising thereunder in full 
compliance with applicable law each in the full Contract Sum, as revised or 
Modified from time to time, and with such sureties as may be approved by the 
Owner. If such bonds, or either of them, are stipulated in the bidding 
documents or in the Contract Documents, the premium therefor shall be paid by 
the Contractor (or appropriate Subcontractors); but if required or increased 
in amount pursuant hereto subsequent to award of Contract or due to Changes 
in the Work, the premium therefor shall be reimbursed by the Owner. The 
Contractor shall deliver promptly, and in any event no later than ten (10) 
days after notice of award, to the Owner any required bonds or amendments 
thereto. The Contractor's failure to timely obtain and deliver the required 
bonds or amendments thereto shall constitute cause for the Owner to terminate 
this Contract (or for the Contractor to terminate any subcontract). The Owner 
shall not be obligated to respond to, and the Contractor shall assure that 
the Owner is not sent any job status inquiries from the Contractor, any 
surety, or any of their accountant or independent auditors.

16.4     UNION AGREEMENTS. Except as otherwise set forth in this Agreement 
including but not limited to paragraph 8.3, regardless of the expiration of 
any collective bargaining agreement during the term of this Contract which 
may affect the Contractor in any of its activities including, without 
limitation, with respect to the Work or the Project, the Contractor is 
obligated to man the job and properly and timely perform the Work in a 
diligent manner. Upon notification of expected or actual labor disputes or 
job disruption arising out of any such collective bargaining negotiations, 
the expiration of any union or 

                                      27
<PAGE>


trade agreement or any other cause, the Contractor and its Subcontractors and 
Sub-subcontractors shall cooperate with the Owner concerning any legal, 
practical or contractual actions to be taken by the Owner in response thereto 
and shall perform any actions requested by the Owner to eliminate, neutralize 
or mitigate the affects of such actions on the progress of the Work and the 
impact of such actions on the public access to the Owner's facilities. It is 
the Contractor's obligation, at the Contractor's own cost and expense, to 
take all steps available to prevent any persons performing the Work from 
engaging in any disruptive activities such as strikes, picketing, slowdowns, 
job actions or work stoppages of any nature or ceasing to work due to 
picketing or other such activities, which steps shall include, without 
limitation, execution of an appropriate project agreement with appropriate 
unions prohibiting all such activities on or about the Project. 
Notwithstanding any such occurrences, the Contractor shall not be relieved of 
its obligation to man the job and properly and timely perform the Work in a 
diligent manner.

16.5     GENERAL.

         16.5.1   The captions of divisions, sections, articles, paragraphs,
         subparagraphs, clauses and the like in the Contract Documents are 
         for convenience only and shall in no way define the content or 
         limit the meaning or construction of the wording of the divisions, 
         sections, articles, paragraphs, subparagraphs, clauses and the 
         like. The parties agree that the Contract Documents shall not be 
         construed more strictly against any party regardless of the 
         identity of their drafter.

         16.5.2   Unless otherwise specified, article, paragraph and 
         subparagraph references appearing in these General Conditions are to
         articles, paragraphs and subparagraphs herein.

         16.5.3   Wherever this Contract obligates the Contractor to 
         "indemnify" the Owner, such obligations shall include, but shall 
         not be limited by, the following: (i) the Contractor shall 
         indemnify the Owner and Owner's Representative, the parent, 
         related, affiliated and subsidiary companies of each, and the 
         officers, directors, agents, employees and assigns of each; 
         (ii) the Contractor shall defend (if requested by the Owner) 
         and hold each indemnitee harmless; (iii) in the event of any such 
         requested defense, the Owner may choose its legal counsel 
         and control the litigation including, without limitation, 
         determining legal strategy, settlement strategy and whether or not 
         to file any appeals; (iv) the Contractor shall not raise a defense 
         to its obligation to indemnify any comparative or contributing 
         negligence of any of those indemnified pursuant to any such 
         provision, it being understood and agreed that no such 
         comparative or contributing negligence shall relieve the 
         Contractor from its liability to so indemnify or entitle the 
         Contractor to any contribution, either directly or indirectly 
         by those indemnified; (v) no indemnification obligation hereunder 
         shall be limited in any way to any limit on the amount or type of 
         damage, compensation or benefits payable by or for the Contractor 
         or any Subcontractor or any Sub-subcontractor under any Worker's 
         Compensation Act, disability benefit acts or other employee benefit 
         acts and (vi) in all such indemnity provisions shall survive 
         the expiration or sooner termination of this Contract.

         16.5.4  Unless otherwise specifically provided herein, the Owner 
         may withhold any consents, approvals or waivers required of it 
         pursuant to this Contract in its discretion, which consent shall not 
         be unreasonably withheld.

16.6     IMMIGRATION REFORM CONTROL ACT. All Contractors, Subcontractors and 
Sub-subcontractors must adhere to the Immigration Reform Control Act of 1986 
and shall maintain I-9 forms regarding all employees. It is not the Owner's 
obligation to insure compliance with this law, however, the Owner reserves 
the right to inspect and copy the Contractor's records in this regard upon 
request.

16.7     ATTORNEY'S FEES. Any other terms of this Agreement to the contrary 
notwithstanding, the parties agree that if any action or proceeding is 
commenced by either party to enforce their rights under this Agreement or to 
collect damages as a result of the breach of any of the provisions of this 
Agreement, the prevailing party in such action or proceeding, shall be 
entitled to recover all reasonable costs and expenses, including, without 
limitation, reasonable attorneys' fees and court costs, including the costs 
of expert witnesses and consultants, in addition to any other relief awarded 
by the court.

                                      28
<PAGE>


                                    EXHIBIT D

                                 MILESTONE DATES

  (the Milestone Dates for continuing (on-call) Work on multiple projects or 
   continuing (on-call) services shall be described in the job specific Work
                             Authorization form)


EXHIBIT D, Milestone Dates, is bound within this Agreement and made apart of 
the Contract Documents between Owner and Contractor.

                                      22
<PAGE>

                                   EXHIBIT E

                        CONTRACTOR'S GUARANTEE TO OWNER


In consideration of the above referenced Contract and pursuant to the 
provisions thereof, the undersigned hereby guarantees to the Owner, its 
successors and assigns, any and all Work which the undersigned has contracted 
to perform, or cause to be performed, pursuant to the above referenced 
Contract against any defects in workmanship, materials and/or equipment. Such 
Work is defined in the Contract Documents.

In addition to the foregoing guarantee, the undersigned agrees to repair 
and/or, at the option of the Owner, replace at its own cost and expense any 
or all of the aforesaid Work that within a period of one (1) year from the 
date of acceptance thereof by the Owner (or such longer period of time as may 
be prescribed by law or otherwise specified in the Contract Documents) may 
prove to be defective in workmanship, material and/or equipment or in any way 
not be in strict accordance and compliance with the Contract Documents, 
together with any adjacent structures or facilities which have been displaced 
or damaged by so doing or which may have been damaged as a result of any 
defect in workmanship, material and/or equipment or the failure of the Work 
to comply with the Contract Documents. All such repairs and/or replacements 
shall be performed in accordance with all agreements, terms, conditions, 
covenants and provisions of the Contract Documents pursuant to which the said 
Work was performed, except that such repairs and/or replacements shall be 
without cost to the Owner, its successors or assigns, or to any related 
company of the Owner.

Should the undersigned fail to perform its obligations under this Guarantee 
promptly after being given notice of a defect by the Owner, then the Owner 
may, at its option, perform such corrective work or cause it to be performed 
by others and charge the undersigned with the cost 


                                       23

<PAGE>

thereof; provided, however, that if, in the sole judgment of the Owner, an 
emergency exists as a result of any such defect which, in the Owner's 
opinion, requires more immediate corrective action than the undersigned is 
able to provide, then the Owner may, without notice to the undersigned, 
perform such corrective work or cause it to be performed by others and charge 
the undersigned with the cost thereof.


CONTRACTOR


Dome Construction Corporation  Local Representative to be contacted for service:


By:_____________________

Name:                                       Name: John Robertson, Vice President

Title:                                      Address: 80 Carolina Street

                                            San Francisco, California 94103-5116

Date:_____________________                  Telephone Number (415) 864-6140


                                       24

<PAGE>

                                   EXHIBIT F

                                 PAYMENT BOND


(If this Agreement is for continuing (on-call) Work on multiple projects or
       continuing (on-call) services, a separate Payment Bond shall be
               issued for each job specific project or service)

KNOW ALL MEN BY THESE PRESENTS, That we ______________________ as Principal 
(Contractor) and as Surety, are held and firmly bound unto ___________ as 
Obligee (OWNER), in the penal sum of _____________________________ DOLLARS 
($__________) for the payment of which sum we jointly and severally bind 
ourselves, our heirs, assigns, executors, administrators and successors 
firmly by these presents.

THE CONDITION of the obligation is such that, whereas Contractor has entered 
into a Contract with OWNER dated _______________ which Contract is hereto 
attached and expressly made a part hereof to perform the following work:

NOW, THEREFORE, if the Contractor shall pay promptly and in full the claims 
of all persons, firms, partnerships, corporations or others, supplying labor, 
material, services, utilities or equipment in connection with the prosecution 
of the work provided for in the Contract and any and all modifications, 
additions or alterations of the Contract that may hereafter be made, and 
shall fully indemnify and hold harmless the OWNER from all loss, liability 
costs, damage penalty and attorney's fees or expenses for all taxes, 
insurance premiums, any and all applicable contributions, allowances or other 
payments or deductions however termed, required by statute or labor union 
agreement, including voluntary payment thereof by the OWNER necessary to 
insure orderly prosecution of work or other items or services in connection 
with the Contract to be supplied or performed which OWNER may suffer by 
reason of failure to do so and shall fully reimburse and repay the OWNER all 
outlay and expense which the OWNER may incur in making good any such failure, 
then this obligation shall be void; otherwise, it shall remain in full force 
and effect.


                                       25

<PAGE>

The Surety and the Contractor further agree that any changes, modifications, 
additions or alterations which may be made in the terms of the Contract or in 
the scope or character of the work to be done thereunder, or any extensions 
of the Contract or in due time for completion thereof any change in the 
manner, time or amount of a payment as provided therein, or other forbearance 
on the part of either the OWNER or Contractor to the other, shall not in any 
way release the Contractor and the Surety, or either of them, their heirs, 
assigns, executors, administrators and successors from their liability 
thereunder, nor affect the obligations of any of them hereunder, notice to 
Surety of any such changes, modifications, additions, extensions or 
forbearance being hereby expressly waived by the Surety.

The Surety and the Contractor further agree that this bond shall insure to 
the benefit of, and may be sue directly upon by any person, firm or 
corporation furnishing labor, material services, utilities or equipment, in 
the prosecution of the work provided for in the Contract, or any 
modifications, additions or alterations thereto, or who has the right to 
establish a lien or claim against OWNER or OWNER's property, premises or 
improvements or any funds accrued, or to accrue, from OWNER.

The sum of this Payment Bond is in addition to the sum of the Performance 
Bond being executed concurrently herewith.

IN WITNESS HEREOF, the parties have executed this instrument under their 
several seals this _____ day of ________________, 19___.

____________________________________    ________________________________________
CONTRACTOR                              CORPORATE SURETY

____________________________________    ________________________________________
Address                                 Address

____________________________________    ________________________________________

By:_________________________________    By:_____________________________________
                (SEAL)                                    (SEAL)


                                       26

<PAGE>

                                   EXHIBIT G

                               PERFORMANCE BOND


  (If this Agreement is for continuing (on-call) Work on multiple projects or
       continuing (on-call) services, a separate Performance Bond shall
              be issued for each job specific project or service)

KNOW ALL MEN BY THESE PRESENTS, That we ______________________ as Principal 
(Contractor) and as Surety, are held and firmly bound unto _________________ 
as Obligee (OWNER), in the penal sum of ____________________________ DOLLARS 
($___________) for the payment of which sum we jointly and severally bind 
ourselves, our heirs, assigns, executors, administrators and successors 
firmly by these presents.

THE CONDITION of the obligation is such that, whereas Contractor has entered 
into a Contract with OWNER dated _______________ which Contract is hereto 
attached and expressly made a part hereof to perform the following work:

NOW, THEREFORE, if the Contractor shall well and truly perform and fulfill 
all the undertakings, covenants, terms, conditions and agreements of the 
Contract and any extensions thereof that may be granted by the OWNER, and 
during the term of any warranty required under the Contract, and shall also 
well and truly perform and fulfill all the undertakings, covenants, terms, 
conditions and agreements of any and all modifications, additions or 
alterations of the Contract that may hereafter be made, and shall also fully 
indemnify and hold harmless the OWNER from all loss, liability costs, damage 
penalty and attorneys' fees which OWNER may incur by reason of failure to 
well and truly keep and perform each, every and all of the terms and 
conditions of said Contract as modified, amended, altered or added to on the 
part of Contractor to be kept and performed, including but not limited to 
completion within the time specified of all work covered by said Contract, 
performance of all obligations, and guarantees of Contractors and shall fully 
reimburse and repay the OWNER all outlay and 


                                       27

<PAGE>

expense which the OWNER may incur in making good any such failure, then this 
obligation shall be void; otherwise it shall remain in full force and effect.

The Surety further agrees that whenever Contractor shall be, and is declared 
by OWNER to be, in default under the Contract (and said default shall be 
construed to be any breach of any of the provisions of the Contract on the 
part of the Contractor) the Surety shall promptly remedy the default, or will 
complete the Contract in accordance with its terms and conditions and shall 
fully indemnify and hold harmless the OWNER from all costs, damages and 
expenses which may arise thereafter (including reasonable attorney's fees) 
and which the OWNER may suffer by reason of Surety's failure to do so.

The Surety and the Contractor further agree that any changes, modifications, 
additions or alterations which may be made in the terms of the Contract or in 
the scope or character of the work to be done thereunder, or any extensions 
of the Contract, or in the time for completion thereof, any change in the 
manner, time or amount or payment as provided therein, or other forbearance 
on the part of either the OWNER or Contractor to the other, shall not in any 
way release the Contractor and the Surety, or either of them, their heirs, 
assigns, executors, administrators and successors, from their liability 
hereunder, nor affect the obligations of any of them hereunder, notice to 
Surety of any such modifications, additions, extensions or forbearance being 
hereby expressly waived by the Surety.

The sum of this Performance Bond is in addition to the sum of the Payment 
Bond being executed concurrently herewith.

IN WITNESS HEREOF, the above parties have executed this instrument under 
their several seals this ____ day of __________________, 19___.

____________________________________    ________________________________________
CONTRACTOR                              CORPORATE SURETY

____________________________________    ________________________________________
Address                                 Address


                                       28

<PAGE>

____________________________________    ________________________________________

By:_________________________________    By:_____________________________________
                (SEAL)                                    (SEAL)


                                       29

<PAGE>

                                   EXHIBIT H

                                 CHANGE ORDER


The "Change Order", AIA DOCUMENT G701, fourteenth edition, April 1987, is not 
bound within this Agreement, but is made apart of the Contract Documents 
between Owner and Contractor.


                                       30

<PAGE>

                                   EXHIBIT I

                               LEGAL DESCRIPTION


(If this Agreement is for continuing (on-call) Work on multiple projects or
       continuing (on-call) services, a separate Legal Description shall
              be attached to the Owner approved Work Authorization
                 Form for each job specific project or service)

The Legal Description is bound within this Agreement and made a part of the 
Contract Documents between Owner and Contractor.


                                       31

<PAGE>

                               LEGAL DESCRIPTION


225 BUSH STREET
CITY AND COUNTY OF SAN FRANCISCO
STATE OF CALIFORNIA

PARCEL ONE:

Beginning at the point formed by the intersection of the southerly line of 
Bush Street with the westerly line of Sansome Street; Running thence 
southerly along said line of Sansome Street 137 feet 6 inches; thence at a 
right angle westerly 206 feet and 3 inches; thence at a right angle northerly 
137 feet and 6 inches to the southerly line of Bush Street; thence at a right 
angle easterly along said line of Bush Street 206 feet and 3 inches to the 
point of beginning.

Being a portion of 50 Vara Block No. 56.

PARCEL TWO:

Beginning at a point on the southerly line of Bush Street, distant thereon 
206 feet and 3 inches westerly from the westerly line of Sansome Street; 
running thence westerly along said line of Bush Street 68 feet and 9 inches; 
thence at a right angle southerly 137 feet and 6 inches; thence at a right 
angle easterly 68 feet and 9 inches; thence at a right angle northerly 
137 feet and 6 inches to the point of beginning.

Being a portion of 50 Vara Block No. 56.

PARCEL THREE:

Beginning at a point which is perpendicularly distant 245 feet westerly from 
the westerly line of Sansome Street and perpendicularly distant 254 feet 
southerly from the southerly line of Bush Street; running thence northerly 
and parallel with the westerly line of Sansome Street 16 feet and 6 inches; 
thence at a right angle westerly 30 feet; thence at a right angle southerly 
16 feet and 6 inches; thence at a right angle easterly 30 feet to the point 
of beginning.

Being a portion of 50 Vara Block No. 56.

PARCEL FOUR:

An exclusive easement appurtenant to parcels one, two and three above, as more 
particularly described in the deed recorded December 18, 1973, in Book B835, 
Page 939, official records, Instrument No. W-38605, affecting the following 
described real property:

Beginning at a point on the southerly line of Bush Street, distant thereon 
275 feet westerly from the point of intersection of said southerly line of 
Bush Street and the westerly line of Sansome Street; running thence westerly 
along said southerly line of Bush Street 25 feet; thence at a right angle 
southerly 154 feet to a point perpendicularly distant 121 feet, more or less, 
from the northerly line of Sutter Street; thence at a right angle easterly 
25 feet; thence at a right angle northerly 154 feet to said southerly line of 
Bush Street and the point of beginning.

Being a portion of 50 Vara Block No. 56.

<PAGE>

                                    EXHIBIT J

                               SCHEDULE OF VALUES






The above Schedule of Values is to be allocated by building and division before
submission of the first Application for Payment as mutually agreed to by Owner
and Contractor.


                                       32

<PAGE>


                                   ADDENDUM 1

                           HOURLY RATE OR FEE SCHEDULE

           (for continuing (on-call) Work on multiple projects or
            continuing (on-call) services, the hourly rate or fee
           schedule shall be as set forth in the job specific Work
                                 Authorization)



                                       33

<PAGE>


                                   ADDENDUM 2

                             WORK AUTHORIZATION FORM

             (an Owner approved Work Authorization Form shall be
               issued for each project for continuing (on-call)
                   Work on multiple projects or continuing
                             (on-call) services)



                                       34

<PAGE>
                             WORK AUTHORIZATION FORM

                                       TO

                             CONSTRUCTION AGREEMENT


(The Work Authorization Form to Construction Agreement is only applicable if the
Agreement (as defined below), is for continuous on-call work on multiple
projects or continuous on-call services)

This Work Authorization Form to Construction Agreement ("Work Authorization")
which supplements the Construction Agreement dated _____________ ("Construction
Agreement"), is made and entered into as of the _________ day of _____________,
1998, by and between _____________ ("Owner") and _____________ ("Contractor").

                                    ARTICLE I
                               CERTAIN DEFINITIONS

1.1      "WORK AUTHORIZATION #": _____________

1.2      "COMMENCEMENT DATE" shall mean the earlier of the _____________ or 
the date fixed in a Notice to Proceed to be delivered by Owner to Contractor 
after the date of this Work Authorization form.

1.3      "CONTRACT SUM" shall mean:

         ( )      Lump Sum.  The sum of _____________ Dollars 
($_____________), subject to additions and deductions as provided in the 
Contract Documents.

         ( )      Hourly Rate as set forth in the attached ADDENDUM 1, 
subject to additions and deductions as provided in the Contract Documents.

         ( )      In accordance with the fees described in ADDENDUM 1, 
subject to additions and deductions as provided in the Contract Documents.

1.4      "PROJECT" shall mean Work at the following location(s):  ____________

______________________________________________________________________________.

The Legal Description for the location(s) is set forth on Exhibit 1.

1.5      "INFORMATION ON PROJECT" this Agreement is for:

                  Project or Contract Name:          _____________

                  Owner's Contract Number:           _____________

                                       1

<PAGE>

                  Owner's Assigned Job Number:       _____________

1.6      "SUBSTANTIAL COMPLETION DATE" shall mean:  _________________________.

1.7      "MILESTONE DATES" shall mean: _______________________________________

                                       _______________________________________

                                       _______________________________________

                                       _______________________________________

1.8      "OWNER'S REPRESENTATIVE" for the Project is:       __________________
(if different than set forth in the Construction Agreement)
                                                            __________________

                                                            __________________

                                                            __________________


1.9      "CONTRACTOR'S REPRESENTATIVE" for the Project is   __________________
(if different that set forth in the Construction Agreement)
                                                            __________________

                                                            __________________

                                                            __________________


1.10     "A/E" for the Project is:                          __________________
(if different that set forth in the Construction Agreement)
                                                            __________________

                                                            __________________

                                                            __________________

1.11     "CONTRACT DOCUMENTS" shall mean this Work Authorization Form, the 
Construction Agreement, the General Conditions, any special supplementary or 
other conditions as set forth on Exhibit 2 (collectively "Special 
Conditions"), the Drawings, the Specifications, all Addenda (except portions 
thereof relating purely to the bidding form or bidding procedure), all 
modifications and all other documents enumerated on Exhibit 3 attached 
hereto. The Contract Documents collectively form the Contract and are fully 
apart thereof as if attached to this Work Authorization Form or repeated 
herein.

                                   ARTICLE II
                                     BONDING

2.1      A Payment Bond is required as set forth in Exhibit 4.

2.2      A Performance Bond is required as set forth in Exhibit 5.

                                   ARTICLE III
                                  DELAY DAMAGES

3.1      Delay Damages pursuant to Section 8.3.3 of the General Conditions of 
the Contract for Construction shall be _____________ Dollars ($_____________) 
for each calendar day 

                                       2

<PAGE>

for which Substantial Completion shall not have occurred on or before the 
expiration of the Contract Time.

3.2      Delay Damages pursuant to Section 8.3.3 of the General Conditions of 
the Contract for Construction do not compensate Owner for any other damages 
of any type or kind, including without limitation any damages related to or 
in connection with Contractor's failure to fully and properly perform the 
Contract Documents or any damages resulting from _____________.

3.3      Pursuant to Section 8.3.5 of the General Conditions of the Contract 
for Construction, in addition to Delay Damages under Section 8.3.3 of the 
General Conditions of the Contract for Construction, Owner shall at all times 
be entitled to all of its remedies under the Contract Documents and at law 
and in equity, including, without limitation, the recovery of damages related 
to or in connection with Contractor's failure to fully and properly perform 
the Contract Documents or any damages resulting therefrom.

                                   ARTICLE IV
                                  MISCELLANEOUS

4.1      A fully executed copy of this Work Authorization hereby authorizes 
the Contractor to proceed with the Work as set forth herein and described in 
the Contract Documents.

4.2      By executing this document, Contractor acknowledges that - for the 
purposes of any applicable Mechanics Lien Law - the Project described in this 
document constitutes a separate work of improvement from other Projects 
described in other Work Authorizations issued pursuant to the Construction 
Contract.

4.3      Contractor shall inform all its consultants, suppliers and other 
agents: (i) that the Project described in this Authorization constitutes a 
separate work of improvement from other Projects on which they may have 
performed Work for Contractor pursuant to the Contract, (ii) that they must 
file a new Preliminary Notice to be entitled to lien rights on account of 
Work on the Project described in this Work Authorization and (iii) Owner may 
file a separate Notice of Completion for the Project described herein at 
completion of any construction/installation of Work on this Project.

4.4      Contractor shall provide Owner with subcontractors' and 
materialmans' acknowledgments, which indicate that they have been so informed.

4.5      This Work Authorization sets forth the terms and conditions for the 
Project set forth herein only. The terms and conditions for other continuing 
(on-call) Work on multiple projects or continuing (on-call) services shall be 
set forth in separate Work Authorization form(s).

                                       3

<PAGE>

4.6      Except as set forth herein or as a necessary corollary to this Work 
Authorization, all terms, conditions and promises of the Construction 
Agreement not inconsistent with the terms, conditions and provisions of this 
Work Authorization shall remain in full force and effect and are hereby 
reaffirmed by the parties. The terms used herein but not defined in the 
foregoing Work Authorization shall have all of the meanings ascribed to such 
terms in the Construction Agreement. This Work Authorization may be executed 
in multiple counterparts.

OWNER:                                 CONTRACTOR:

----------------------------------     -----------------------------------
By:                                    By:
   -------------------------------        --------------------------------
Title:                                 Title:
      ----------------------------           -----------------------------
Date:                                  Date: 
     -----------------------------          ------------------------------


                                       4

<PAGE>


                                LIST OF EXHIBITS

     EXHIBIT 1 -                Legal Description

     EXHIBIT 2 -                Special Conditions

     EXHIBIT 3 -                List of Contract Documents

     EXHIBIT 4 -                Payment Bond

     EXHIBIT 5 -                Performance Bond

     ADDENDUM 1 -               Hourly Rate or Fee Schedule, if applicable



                                       5

<PAGE>


                                    EXHIBIT 1

                                LEGAL DESCRIPTION


The Legal Description is bound within this Agreement and made a part of the
Contract Documents between Owner and Contractor.



                                       6

<PAGE>


                                    EXHIBIT 2

                               SPECIAL CONDITIONS


[A. Materials purchased by Owner

Certain Materials specified in the Contract Documents and to be incorporated
into the Work have been purchased by Owner. The cost for loading, transporting
and unloading these Materials at the Project site are included in the Contract
Sum. The list of materials purchased by the Owner is bound within this Agreement
and made apart of the Contract Documents between Owner and Contractor.]


                                       7

<PAGE>


                                    EXHIBIT 3

                           LIST OF CONTRACT DOCUMENTS





                                       8
<PAGE>

                                   EXHIBIT 4

                                 PAYMENT BOND


   (If this Agreement is for continuing (on-call) Work on multiple projects
        or continuing (on-tall) services, a separate Payment Bond shall
              be issued for each job specific project or service)

KNOW ALL MEN BY THESE PRESENTS, That we _____________ as Principal 
("Contractor") and as Surety, are held and firmly bound unto _____________ as 
Obligee ("Owner"), in the penal sum of _______________________________ DOLLARS 
($_____________) for the payment of which sum we jointly and severally bind 
ourselves, our heirs, assigns, executors, administrators and successors, 
firmly by these presents.

THE CONDITION of the obligation is such that, whereas Contractor has entered 
into a Contract with Owner dated _____________ which Contract is hereto 
attached and expressly made a part hereof to perform the following work:

NOW, THEREFORE, if the Contractor shall pay promptly and in full the claims 
of all persons, firms, partnerships, corporations or others, supplying labor, 
material, services, utilities or equipment in connection with the prosecution 
of the work provided for in the Contract and any and all modifications, 
additions or alterations of the Contract that may hereafter be made, and 
shall fully indemnify and hold harmless the Owner from all loss, liability 
costs, damage penalty and attorney's fees or expenses for all taxes, 
insurance premiums, any and all applicable contributions, allowances or other 
payments or deductions however termed, required by statute or labor union 
agreement, including voluntary payment thereof by the Owner necessary to 
insure orderly prosecution of work or other items or services in connection 
with the Contract to be supplied or performed which Owner may suffer by 
reason of failure to do so and shall fully reimburse and repay the Owner all 
outlay and expense which the Owner may incur in making good any such failure, 
then this obligation shall be void; otherwise, it shall remain in full force 
and effect.

The Surety and the Contractor further agree that any changes, modifications, 
additions or alterations which may be made in the terms of the Contract or in 
the scope or character of the work to be done thereunder, or any extensions 
of the Contract or in due time for completion thereof any change in the 
manner, time or amount of a payment as provided therein, or other forbearance 
on the part of either the Owner or Contractor to the other, shall not in any 
way release the Contractor and the Surety, or either of them, their heirs, 
assigns, executors, administrators and successors from their liability 
thereunder, nor affect the obligations of any of them hereunder, notice to 
Surety of any such changes, modifications, additions, extensions or 
forbearance being hereby expressly waived by the Surety.


                                       9

<PAGE>

The Surety and the Contractor further agree that this bond shall insure to 
the benefit of, and may be sue directly upon by any person, firm or 
corporation furnishing labor, material services, utilities or equipment, in 
the prosecution of the work provided for in the Contract, or any 
modifications, additions or alterations thereto, or who has the right to 
establish a lien or claim against Owner or Owner's property, premises or 
improvements or any funds accrued, or to accrue, from Owner.

The sum of this Payment Bond is in addition to the sum of the Performance 
Bond being executed concurrently herewith.

IN WITNESS HEREOF, the parties have executed this instrument under their 
several seals this _______ day of _____________, 19__.

____________________________________    ________________________________________
CONTRACTOR                              CORPORATE SURETY

____________________________________    ________________________________________
Address                                 Address

____________________________________    ________________________________________

By:_________________________________    By:_____________________________________
                (SEAL)                                    (SEAL)


                                       10

<PAGE>

                                   EXHIBIT 5

                               PERFORMANCE BOND


   (If this Agreement is for continuing (on-call) Work on multiple projects
         or continuing (on-call) services, a separate Performance Bond
           shall be issued for each job specific project or service)

KNOW ALL MIEN BY THESE PRESENTS, That we _____________ as Principal 
("Contractor") and as Surety, are held and firmly bound unto _____________ as 
Obligee ("Owner"), in the penal sum of __________________________ 
DOLLARS($_____________) for the payment of which sum we jointly and severally 
bind ourselves, our heirs, assigns,. executors, administrators and successors 
firmly by these presents.

THE CONDITION of the obligation is such that, whereas Contractor has entered 
into a Contract with Owner dated ______________ which Contract is hereto 
attached and expressly made a part hereof to perform the following work:

NOW, THEREFORE, if the Contractor shall well and truly perform and fulfill 
all the undertakings, covenants, terms, conditions and agreements of the 
Contract and any extensions thereof that may be granted by the Owner, and 
during the term of any warranty required under the Contract, and shall also 
well and truly perform and fulfill all the undertakings, covenants, terms, 
conditions and agreements of any and all modifications, additions or 
alterations of the Contract that may hereafter be made, and shall also fully 
indemnify and hold harmless the Owner from all loss, liability costs, damage 
penalty and attorneys' fees which Owner may incur by reason of failure to 
well and truly keep and perform each, every and all of the terms and 
conditions of said Contract as modified, amended, altered or added to on the 
part of Contractor to be kept and performed, including but not limited to 
completion within the time specified of all work covered by said Contract, 
performance of all obligations, and guarantees of Contractors and shall fully 
reimburse and repay the Owner all outlay and expense which the Owner may 
incur in making good any such failure, then this obligation shall be void; 
otherwise it shall remain in fun force and effect.

The Surety further agrees that whenever Contractor shall be, and is declared 
by Owner to be, in default under the Contract (and said default shall be 
construed to be any breach of any of the provisions of the Contract on the 
part of the Contractor) the Surety shall. promptly remedy the default, or 
will complete the Contract in accordance with its terms and conditions and 
shall fully indemnify, defend, and hold harmless the Owner from all costs, 
damages and expenses which may arise thereafter (including reasonable 
attorney's fees) and which the Owner may suffe