BAY VISTA OFFICE BUILDING
                                 LEASE AGREEMENT






                   Landlord: Bay Vista Office Investors, LLC,
                             a Delaware Limited Liability Company
                             By: ASA Properties, Inc.,
                             a Washington corporation
                             Its: Managing Member

                   Tenant:   Cellular Technical Services Company, Inc.,
                             a Delaware corporation


                                          1







                                  OFFICE LEASE
                             BASIC LEASE INFORMATION



                                      
Date of Lease                            July _11_, 2000

Landlord:                                Bay Vista Office Investors, LLC,
                                         a Delaware Limited Liability Company

Tenant:                                  Cellular Technical Services Company, Inc.,
                                         a Delaware corporation

Name and Location of Building:           Bay Vista Office Building
[Paragraph 1(a)]                         2815 Second Avenue, Suite 100
                                         Seattle, Washington 98121

Net Rentable Area of Premises:           11,728rsf (includes a 12% load factor 10,471 usable sq.ft.)
[Paragraph 1(b)]
Base Year:                               2000
[Paragraph (c) ]
Tenant's Percentage Share:               9.81% (0.0981)
[Paragraph 2]
Net Rentable Area of Building:           115,069 rsf
[Paragraph 2]

Term Commencement:                       September 1, 2000
[Paragraph 4]

Initial Term Expiration:                 August 31, 2003, subject to option renewals.
[Paragraph 4]                            Rents below based on rentable square
                                         footage. However, the load
                                         factor is established as an
                                         agreed upon market rate
                                         load factor not subject to
                                         modifications or
                                         challenges.

Basic Rent:
[Paragraph 5]                            Year 1 - $234,560/yr.  19,546.67/mo.
                                         Year 2 - $246,288/yr.  20,524.00/mo.
                                         Year 3 - $258,016/yr.  21,501.33/mo
First option period

                                         Year 4 - $269,744/yr.  22,478.67/mo.
                                         Year 5 - $281,472/yr.  23,456.00/mo.

Security Deposit:                        $20,000.00
[Paragraph 32]
Tenant's Address for Notices:            2815 2nd Avenue, Suite 100
[Paragraph 37]                           Seattle, Washington 98121
                                         Attention:  Legal Department

Landlord's Address for Notices:          8805  148th Ave. NE
[Paragraph 37]                           Redmond, WA 98052

Exhibits:                                A,B, C, D & E
[Paragraph 45]

Additional Provisions:                   Tenant to pay the first month's basic
[Paragraph 46]                           rent and security deposit in advance at
                                         the execution of this Lease by Tenant.
 

The provisions of the Lease identified above in brackets are those provisions
where reference to particular Basic Lease Information appear. Such bracketed
references are provided for informational purposes only. In the event of any
conflict between any Basic Lease Information and the Lease, the latter shall
control.



TENANT                                               LANDLORD
                                                  
Cellular Technical Services Company, Inc.,           Bay Vista Office Investors, LLC,
a Delaware corporation                               a Delaware Limited Liability Company


                                       2







Please Initial: __________                         Please Initial: ____________


                                TABLE OF CONTENTS


                                                                             
1.Definitions                                                                   4
2.Additional Rental for Operating Expenses                                      4
3.Premises                                                                      5
4.Term                                                                          6
5.Rent                                                                          6
6.Taxes and Assessments                                                         6
7.Operation Expenses                                                            7
8.Maintenance by Landlord                                                       7
9.Alterations Repairs,  & Maintenance by Tenant                                 7
10.Estimated Payments                                                           7
11.Common Areas                                                                 8
12.Use                                                                          8
13.Liens                                                                        9
4.Damage and Destruction                                                        9
5.Indemnification                                                               10
6.Insurance                                                                     10
7.Condemnation                                                                  11
8.Compliance with Legal Requirements                                            12
9.Assignment and Subletting                                                     12
20.Rules and Regulations                                                        14
210.Landlord's Access                                                           14
22.Default                                                                      14
23.Landlord's Right to Cure Default                                             16
11.Attorneys' Fees                                                              16
12.Subordination                                                                16
13.No Merger                                                                    17
14.Sale by Landlord                                                             17
15.Estoppel Certificate                                                         17
16.Holdover Tenancy                                                             17
30.Building Security                                                            17
31.Parking                                                                      17
32.Security Deposit                                                             18
33.No Partnership                                                               18
17.Recording                                                                    18
18.Modification and Financing Conditions                                        18
19.Waiver                                                                       18
20.Notices and Consents                                                         19
21.Complete Agreement                                                           19
22.Corporate Authority                                                          19
40.Limits to Tenant's Remedy                                                    19
41.Arbitration                                                                  19
42.Brokers                                                                      19
43.No Light and Air Easement                                                    19
44.Miscellaneous                                                                19
45.Basic Lease Information and Exhibits                                         20
46.Additional Provisions                                                        20
47.Building Transportation Program                                              20
48.Governing Law                                                                20


EXHIBITS
                                                                          
Exhibit A - Description of the Building                                         21
Exhibit B - Description of the Premises (Final Space Plan)                      22
Exhibit C - Rules and Regulations/Parking Rules and Regulations                 23
Exhibit D - Other Conditions                                                    27
Exhibit E - Application of Operating Expenses                                   29


                                  OFFICE LEASE

     THIS LEASE, DATED as of July ___, 2000 for purposes of reference only, is
made and entered into by and between Bay Vista Office Investors, LLC, a Delaware
Limited Liability Company ("Landlord") and Cellular Technical Services Company,
Inc., a Delaware corporation ("Tenant").

                                       3







                                   WITNESSETH:

     Landlord hereby leases to Tenant, and Tenant hereby leases from Landlord
the premises described in paragraph 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 parcel of real property described on
Exhibit A attached hereto, situated in the location and commonly know by the
name specified in the Basic Lease Information, which name Landlord may change at
any time, and all other improvements on or appurtenances to such parcel.

     (b) The term "premises" or "premises" shall mean that portion of a floor of
the Building outlined in red on the diagrams attached hereto as Exhibit B. The
premises contain the net rentable area specified in the Basic Lease Information.

2. Additional Rental for Operating Expenses. This is a "triple-net" lease. In
addition to the Basic Rental provided in the Basic Lease Information above and
Section 5 below, Tenant agrees to pay Landlord "Additional Rental" for Operating
Expenses during each Lease Year based upon Tenant's percentage share of the
total dollar amount of Operating Expenses incurred by Landlord in each Lease
Year related to the Premises and the Building. Tenant's percentage share of such
Operating Expenses shall be the ratio that the floor area of the Premises
(10,471 net rentable square feet) bears to the total rentable square footage of
the Building (115,069 net rentable square feet) (9.10%). The Operating Expenses
are currently applied as listed on Exhibit E. The percentage share of Operating
Expenses shall be adjusted when the final rentable square footage of the
Premises and the Building is determined, and Landlord shall deliver written
notice to Tenant a statement upon commencement of the Lease Term confirming such
amounts if different than those stated herein. Landlord reserves the right to
modify and adjust Tenant's percentage share of the Building and/or the Premises
in the event the Premises or the Building shall be changed in size or remeasured
which results in a change of 1% or greater of that stated herein. Such written
notice shall be delivered to Tenant on or before January 15th of the ensuing
calendar year. Such modification or adjustment shall apply beginning as of
January 15th of the ensuing calendar year and shall not be applied
retroactively.

The term "Operating Expenses" means all costs of ownership, management,
operation, and maintenance of the Building, including, without limitation, the
following: wages and salaries of employees; janitorial, cleaning, landscaping,
irrigation, storm water, guard and other services; gas, electricity, water,
sewer, waste disposal, and other utilities; heating, ventilation and
air-conditioning; window-washing; materials and supplies; painting, repairs, and
other maintenance; parking lot resurfacing and restriping; maintenance, repair,
replacement, service of equipment and service agreements of any kind, elevator
equipment, and other equipment; reserves for any common area improvements; costs
of independent contractors; management fees; insurance of any kind; Condominium
and/or Building association fees, taxes, assessments and other governmental and
utility charges of any kind; the cost of any repair, renovation, alteration, and
improvement required to be made by Landlord under any governmental law, rule or
regulation; and any other expense or charge which in accordance with generally
accepted accounting and management principles which are consistently applied
would be considered a cost of ownership, management, operation, and maintenance
of the Building. Restrictions to Operating Expenses are as follows: Wages and
salaries of employees are limited to a level at or below the property manager;
Gas, electricity, water, sewer, and other utilities should be limited to those
supplied to common areas only (and not other tenants which may be billed
separately); Management fees should be limited to a maximum of 5%; and the costs
of repairs, renovations, alteration and improvements "required to be made by
Landlord under any governmental law" are limited to laws enacted after the date
of this Lease. Subject to the arbitration procedure for disputes set forth in
subparagraph 41, the determination of Operating Expenses and their allocation to
all the tenants of the Building shall be made by Landlord in its sole and
absolute discretion. Notwithstanding other statements contained herein to the
contrary, Tenant is responsible for the entire cost of maintenance, repairs,
replacements of HVAC systems, alarm systems and other electrical items related
to its Premises, provided that such cost items are not prorated to other tenants
of the Building. Payment of these direct cost items shall be made by Tenant
immediately as such cost items are incurred. Landlord warrants that the HVAC
system, fire alarm system and other electrical items related to the Premises are
in proper working order at the commencement of this Lease.

Prior to commencement of each Lease Year, or as soon thereafter as practicable,
Landlord shall give Tenant notice of its estimate of amounts payable under this
section for the ensuing Lease Year. On the first day of each month during the
ensuing Lease Year, Tenant shall pay to Landlord 1/12th of such


                                       4








estimated amounts, provided, that if such notice is not given prior to the
commencement of such ensuing Lease Year, Tenant shall continue to pay on the
basis of the prior Lease Year's estimate until the month after such notice is
given. If at any time or times it appears to Landlord that the amounts payable
under this section for the current Lease Year will vary from its estimate,
Landlord may, by notice to Tenant, revise its estimate for such Lease Year, and
subsequent payments by Tenant for such Lease Year shall be based upon such
revised estimate.

Within ninety (90) days after the close of each Lease Year or as soon after such
90-day period as practicable, Landlord shall deliver to Tenant a statement of
amounts payable under this section for such Lease Year and such statement shall
be final and binding upon Landlord and Tenant. If such statement shows an amount
owing by Tenant that is less than the estimated payments for such Lease Year
previously made by Tenant, it shall be accompanied by a refund of the excess. If
such statement shows an amount owing by Tenant that is more than the estimated
payments for such Lease Year previously made by Tenant, Tenant shall pay the
deficiency to Landlord within thirty (30) days after delivery of the statement.
Tenant shall be entitled at its expense to review at Landlord's offices the
records on which the statement of amounts payable is based.

In determining the amount of Operating Expenses, for the purpose of this Section
6: (a) if less than one hundred percent (100%) of the Building shall have been
occupied by tenants and fully used by them at any time, Operating Expenses shall
be increased to an amount equal to the like operating expenses which would
normally be expected to be incurred had such occupancy been ninety-five percent
(95%) and had such full utilization by tenants been made during the entire
period; and (b) if the Landlord is not furnishing any particular work or service
(the cost of which if performed by the Landlord would constitute an Operating
Expense) to a tenant who has undertaken to perform such work or service in lieu
of the performance thereof by the Landlord, Operating Expenses shall be deemed
for the purposes of this Section 2 to be increased by an amount equal to the
additional Operating Expense which would reasonably have been incurred during
such period by the Landlord if it had at its own expense furnished such work or
service to such tenant.

Tenant shall pay as rent monthly, in addition to the Basic Rental and Additional
Rental during the term of this Lease such "Special Building Operating Expenses"
as are required and incurred as a result of Tenant's occupancy and use of the
Premises, or any part thereof, and which are in addition to normal business
office expenses, which Special Building Operating Expenses shall include but not
be limited to unusual utility costs; unusual heat, air conditioning or water
requirements; increase in insurance premiums attributable to the Tenant's
business and/or use or occupancy of the Premises; and the like.

     "Lease Year" shall mean calendar year. If this Lease commences or
terminates on a day other than the first or last day of a calendar year, the
amount of additional rental payable by Tenant applicable to the Lease Year in
which such commencement or termination occurs shall be prorated on the basis of
a 365-day year.

3. Premises.

     (a) Tenant hereby acknowledges that, except as set forth herein, the
premises shall be delivered in an "as is" condition and that Landlord, except as
may be expressly agreed by Landlord in writing as specified herein and in
Exhibit D attached hereto, has no obligation to alter, repair, renovate, or
render fit for Tenant's occupancy, any part of the premises. Landlord reserves
to itself the use of the roof, exterior walls and the area above and beneath the
premises, together with the right to install, maintain, use, repair and replace
plumbing, telephone facilities, equipment, machinery, connections, pipes, ducts,
conduits, and wires leading through the premises and serving other parts of the
Building in a manner and in locations which will not unreasonably interfere with
Tenant's use.

     (b) In the event Landlord determines to permit early occupancy of the
premises and, therefore, informs Tenant in writing that the premises are ready
for occupancy prior to the date set forth in the Basic Lease Information for the
commencement of the term of the Lease, Tenant shall have the right to take early
occupancy of the premises on such date as Landlord and Tenant shall agree, and
notwithstanding the provisions of paragraph 4 below, the term of the Lease shall
commence upon such occupancy.

     (c) The occupancy by Tenant of the premises shall constitute an
acknowledgment by Tenant that the premises are then in good, sanitary and
tenantable condition and repair. Notwithstanding the foregoing, Landlord
represents and warrants, to the best of its knowledge without inquiry, to Tenant
that, as of the Commencement Date, the Premises, including any improvements made
by Landlord, shall be incompliance with all laws and regulations, and built in a
good and workmanlike manner with good materials and the equipment and Building
services serving the Premises shall be in good working order.

4. Term. The initial term of this Lease shall commence and, unless renewed or
sooner terminated in accordance with this Lease, shall end on the date
respectively specified in the Basic Lease Information. If Landlord for any
reason cannot deliver possession of the premises to Tenant, in condition
reasonably


                                       5








satisfactory to Tenant and in accordance with the space plan attached hereto as
Exhibit B, by the date specified for term commencement, this Lease shall not be
void or voidable in that event, provided that the delay is not occasioned by the
act or omission of Tenant, rental shall be waived for the period between the
commencement of such term and the date when possession is delivered
substantially complete.

Provided, however, if Landlord has not delivered the premises to Tenant
substantially completed within sixty (60) days of the Term Commencement, then
Tenant shall have the right to terminate this Lease upon written notice to
Landlord, without liability to either party, so long as such failure is not due
to a delay caused by the act of omission of Tenant.

5. Rent. Tenant shall pay to Landlord as rental for the use and occupancy of the
premises, at the times and in the manner hereinafter provided, the following
sums of money:

     (a) Tenant shall pay to Landlord basic rent in the amount specified in the
Basic Lease Information per year, payable in equal monthly installments in
advance on the commencement of the term hereof and on or before the first day of
each and every successive calendar month during the term hereof. If the term
commences on other than the first day of a calendar month, the first payment of
rent shall be appropriately prorated on the basis of a 30-day month.

     (b) Tenant shall pay, as additional rent, all sums of money required to be
paid to Landlord as stated above and all other sums of money or charges required
to be paid by Tenant hereunder in addition to basic rent, whether or not the
same are designated "additional rent". If such amounts or charges are not paid
at the time provided in this Lease, they shall nevertheless be collectible as
additional rent with the next installment of minimum rental thereafter falling
due, but nothing herein contained shall be deemed to suspend or delay the
payment of any amount of money or charge at the time the same becomes due and
payable hereunder, or limit any other remedy of Landlord. All amounts of money
payable by Tenant to Landlord under this Lease, if not paid when due, shall bear
interest from the due date until paid at the rate of the greater of 15% per
annum or the prime rate publicly announced by the Bank of America at (Seattle
Washington office) or its successor or its equivalent size competitor in the
Seattle market place should Bank of America cease to exist, but not to exceed
the maximum rate of interest permitted by law ("Default Interest"). All payments
due from Tenant to Landlord hereunder shall be made to Landlord without
deduction or offset in lawful money of the United States of America at
Landlord's address for notices hereunder, or to such other person at such other
place as Landlord may from time to time designate in writing to Tenant.

     (c) Tenant hereby acknowledges that late payment by Tenant to Landlord of
rent and other sums due hereunder after the expiration of any applicable grace
period will cause Landlord to incur costs not contemplated by this Lease, the
exact amount of which will be extremely 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 mortgage or trust
deed covering the premises. Accordingly, if any installment of rent or any other
sums due from Tenant shall not be received by Landlord within 10 days after the
due date, Tenant shall pay to Landlord a late charge equal to 6% of such overdue
amount. 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. Acceptance of such late charge by Landlord shall in no event
constitute a waiver of Tenant's default as provided above, or prevent Landlord
from exercising any of the other rights and remedies available to Landlord
hereunder or at law.

6. Taxes and Assessments. In addition to the monthly rental and other charges to
be paid by Tenant hereunder, Tenant shall reimburse Landlord upon demand for any
and all taxes, assessments, condominium and/or Building associations fees,
levies, fees, charges and impositions whatsoever levied or imposed or assessed
by any authority having the direct or indirect power to tax, including, without
limitation, any city, county, state or federal government or any improvement or
other assessment district, whether or not consented to or joined in by Landlord,
payable by Landlord (other than income taxes, measured by the net income of
Landlord from all sources), whether or not now customary or within the
contemplation of the parties hereto on the date of this Lease: (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 by the cost or value of any leasehold improvements made in or to the
premises by or for Tenant, other then building standard tenant improvements made
by Landlord, regardless of whether title to such improvements shall be in Tenant
or Landlord; (b) upon or measured by the rental payable hereunder, including
without limitation any gross income tax or excise tax levied by any city,
county, state, federal or other governmental body with respect to the receipt of
such rental; (c) upon or with respect to the possession, leasing, operation,
management, maintenance, improvement, alteration, repair, use or occupancy by
Tenant of the premises or any portion thereof; (d) upon this transaction or any
document to which Tenant is a party creating or transferring an interest or an
estate in the premises. In the event that it shall not be lawful for Tenant so
to reimburse Landlord, the monthly rental payable to Landlord under this Lease
shall be revised to net Landlord the same net rental after such imposition as
would have been payable to Landlord prior to such imposition.


                                       6







7. Operation Expenses-Utilities and Other Services by Landlord. Landlord agrees
that there will bea available at the Premises the following utilities and
services:

         Electricity ( a minimum power available to the Premises of 200
         amps/220-240 and 110-120 volts for the duration of the Lease), hot and
         cold water suitable for drinking, restroom and office
         janitorial/cleaning service, , gas, and the other utilities and
         services described in the definition of Operating Expenses described in
         this Lease.

All such utilities and services shall be paid for by Tenant as Additional Rental
for Operating Expenses pursuant to Section 2. Landlord does not warrant the
adequacy of such utilities for Tenant's needs or that any of the foregoing
utilities and services will be free from interruption due to causes outside of
the reasonable control of Landlord. Interruption of utilities or services shall
not be deemed an eviction or excuse performance of any of Tenant's obligations
under this Lease or render Landlord liable for damages (except if due to causes
within the reasonable control of Landlord). If separate metering is necessary
due to Tenant's excessive use thereof, Tenant shall be charged the installation
cost of such meters. Other than the utilities and services required to be
provided by Landlord in this Lease, Tenant shall, at Tenant's expense, provide
all other utilities and other services to the Premises required by Tenant, and
shall pay for the same when due. Tenant has had the opportunity to have an
electrician determine that there is adequate power to the building for Tenant's
use in the Premises.

8. Maintenance by Landlord. Landlord shall maintain in good condition (normal
wear and tear excepted) the structural and exterior components of the Building.
Landlord, with cost shared on a pro rata basis to all tenants of the Building,
shall repair and replace, when necessary, light fixtures (including replacement
of light bulbs and fluorescent tubes) and shall maintain in good condition and
repair the underground plumbing and the electrical system in the Building.
However, Landlord shall not be obligated to repair or replace any fixtures or
equipment installed by Tenant and Landlord shall not be obligated to make any
repair or replacement occasioned by any act or omission of Tenant, its
employees, agents, invitees, or licensees. Landlord is responsible for all
repairs, cleaning and maintenance to electrical, lighting, lightbulbs, and
plumbing from the inside of exterior wall, or middle of the demising wall, as
the case may be, to the opposite inside of the exterior wall, or middle of the
demising wall of the Premises. Tenant is responsible to pay for any and all such
cost on a pro-rata basis as defined in section 2.

Tenant's installed personal equipment is not considered part of the real
property to the extent it is attached to the Premises as long as Tenant removes
such personal property prior to the expiration of this Lease and repairs the
Premises to a similar condition which the Premises were in prior to any such
equipment being attached thereto.

9. Alterations, Repairs, and Maintenance by Tenant. Tenant shall make no
changes, improvements, or alterations to the Premises without the prior consent
of Landlord. Except as stipulated in Section 14 below, all such changes,
improvements, and alterations and repairs, if any, made by Tenant shall remain
on the Premises and shall become the property of Landlord upon the expiration or
sooner termination of this Lease. Tenant shall keep the Premises in a neat,
clean, and sanitary condition, and shall keep the Premises and all items therein
installed by Tenant in good condition, except only for reasonable wear and tear.
Tenant may install operating equipment of legal intent within the Premises such
as additional electrical service, plumbing fixtures, roof vents, gas lines,
telephones and computer network cabling as are customary to its business and in
compliance with all City of Seattle codes, ordinances and zoning.

10. Estimated Payments. Unless otherwise expressly designated herein, all
monetary amounts payable to Landlord pursuant to this Lease shall be payable as
follows:(a) During December of each Lease Year or as soon thereafter as
practicable, Landlord shall give Tenant notice of its estimate of amounts
payable hereunder for the ensuing Lease Year. On or before the first day of each
month during the ensuing Lease Year, Tenant shall pay to Landlord 1/12 of such
estimated amounts, provided that if such notice is not given in December Tenant
shall continue to pay on the basis of the prior year's estimate until the month
after such notice is given. If, at any time or times, it appears to Landlord
that the amounts payable for the current Lease Year will vary from its estimate
by more than 5%, Landlord shall, by notice to Tenant, revise its estimate for
such year, in which case subsequent payments by Tenant for such year shall be
based upon such revised estimate.

     (b) Within 90 day after the close of each Lease Year or as soon after such
90-day period as practicable, Landlord shall deliver to Tenant a statement of
amounts payable for such Lease Year. If on the basis of such statement Tenant
owes an amount that is less than the estimated payments for such Lease Year
previously made by Tenant and Tenant is not in default hereunder, Tenant shall
receive a credit in the amount if such excess against the installments due under
Section 2 hereof prorated over the balance of the remaining calendar year. If on
the basis of such statement Tenant owes an amount that is


                                       7








more than the estimated payments for such Lease Year previously made by Tenant,
Tenant shall pay the deficiency to Landlord within 30 days after delivery of the
statement.

     (c) If this Lease shall terminate on other than the last day of a calendar
year, the adjustment in rent applicable to the Lease Year in which such
termination shall occur shall be prorated on the basis which the number of days
from the commencement of such Lease Year to and including such expiration date
bears to 365. If the adjustment in rent is not determined until after the
termination of this Lease, any excess amounts due Tenant or deficiency amounts
due Landlord shall be paid in cash within 30 days after delivery of the
statement setting forth such adjustment determination.

     (d) Notwithstanding the foregoing, if, at any time, Landlord incurs for any
item actual costs or expenses which are reimbursable in whole or in part by
Tenant pursuant to this Lease and such costs or expenses are in excess of the
estimated amount budgeted for such item and otherwise payable by Tenant, then,
upon written demand from Landlord accompanied by a statement of such costs of
expenses, Tenant shall immediately pay to Landlord the full amount of any excess
reimbursable costs or expenses within 30 days of being billed.

11. Common Areas.

     (a) The use and occupation by Tenant of the Premises shall include a right
to the use in common with others entitled thereto of the common areas and other
facilities as may be designated from time to time by Landlord, subject, however,
to the terms and conditions of this Lease. All common areas and facilities not
within the Premises, which Tenant may be permitted to use and occupy pursuant to
this paragraph, are to be used and occupied under a revocable license. If the
measure of such areas is diminished by Landlord, Landlord shall not be subject
to any liability nor shall Tenant be entitled to any compensation or diminution
or abatement of rent, nor shall such diminution of such areas be deemed
constructive or actual eviction.

     (b) Landlord shall at all times during the term of this Lease have the
following rights with respect to the common area and other facilities:

         (1) Landlord shall have the right from time to time to alter and modify
the common areas and other facilities as it deems desirable in its sole
discretion;

         (2) Landlord may discontinue the existence of the common area subject
to the requirements of laws and ordinances applicable thereto;

         (3) Landlord may uniformly promulgate and enforce such rules and
regulations relating to the use of the common areas and other facilities as
Landlord deems necessary or desirable.

Landlord shall exercise the foregoing rights in such a manner as to minimize the
interference with Tenant's beneficial enjoyment of the premises.

     (c) Notwithstanding anything to the contrary, during the term of this
Lease, Landlord shall at all times operate and maintain the restrooms adjacent
to the Premises (as depicted in the attached Exhibit B) and Tenant shall have
continuous right of access and use of such restrooms. Landlord represents,
warrants and covenants that such restrooms, including any improvements made by
Landlord, shall be in compliance with all laws and regulations, and built in a
good and workmanlike manner with good materials, and the equipment and Landlord
services serving such restrooms shall be in good working order.

12. Use.

     (a) The premises shall be used solely for general office purposes and no
other, except services that are permitted under codes for the City of Seattle.
Tenant shall not use or permit the premises to be used for any other purpose
without Landlord's prior written consent. Landlord and Tenant hereby further
acknowledge that the identity of Tenant, the specific character of Tenant's
business and anticipated use of the premises and the relationship between such
use and other uses within the Building has been a material consideration to
Landlord's entry into this Lease. Any material change in the character if
Tenant's business or its financial condition or use shall constitute a default
under this Lease.

     (b) Tenant shall not do or permit to be done in, on or about he premises,
nor bring or keep or permit to be brought or kept therein, anything which is
prohibited by or will 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, or which is prohibited by the standard form of fire insurance
policy or will in any way increase the existing rate of or affect any fire or
other insurance upon the Building, or cause a cancellation of any insurance
policy covering the Building or any part thereof of any of its contents.

     Tenant shall not do or permit anything to be done in or about the premises
which will 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 objectionable purpose. Nor shall Tenant
cause, maintain or permit any nuisance in, or about the premises or commit or
suffer to be committed any waste in or upon the premises.


                                       8








     c) Except for normal office and janitorial supplies in customary
quantities, Tenant shall not cause or permit any Hazardous Material to be
brought upon, kept or used in or about the premises or the Building. If Tenant
breaches the obligations stated in the preceding sentence, or if the presence of
Hazardous Material on the premises or the Building caused or permitted by Tenant
results in contamination of the premises or the Building the Tenant shall
indemnify, defend and hold Landlord harmless for, from and against any and all
claims, judgments, damages, penalties, fines, costs, liabilities or losses
(including, without limitation, diminution in value of the Building, damages for
the loss or restriction on use of rentable or usable space or of any amenity of
the Building, damages arising from any adverse impact on marketing of space in
the Building, and sums paid in settlement of claims, reasonable attorneys' fees,
consultant fees and expert fees) which arise during or after the Lease Term as a
result of such contamination. This indemnification of Landlord by Tenant
includes, without limitation, costs incurred in connection with any
investigation of site conditions or any cleanup, remedial, removal or
restoration work required by any federal, state or local governmental agency or
political subdivision because of hazardous Material present in or about any part
of the Building, including, without limitation, the soil or ground water under
the Building.

     As use herein, the term "Hazardous Material" means any hazardous or toxic
substance, material or waste which is or becomes regulated by any federal, state
or other local governmental authority, including, without limitation, any
material or substance which is designated as a "hazardous substance" pursuant to
Section 311 of the Federal Water Pollution Control Act (33 U.S.C. '1317),
defined as a "hazardous waste@ pursuant to Section 1004 of the Federal Resource
Conservation and Recovery Act, (42 U.S.C. 6901 et seq.), or defined as a
"hazardous substance" pursuant to Section 101 of the Comprehensive Environmental
Response, Compensation and Liability Act (42 U.S.C. ' 9601 et seq.).

13. Liens. Tenant shall keep the premises and the Building free from any liens
arising out of any work performed, materials furnished or obligations incurred
by Tenant. In the event that Tenant shall not, within 10 days following the
imposition of any such lien, cause the same to be released of record, Landlord
shall have, in addition to all other remedies provided herein and by law, the
right but not the obligation to cause the same to be released by such means as
it shall deem proper, including payment of the claim giving rise to such lien.
All sums paid by Landlord for such purpose, and all expenses incurred by it in
connection therewith including, without limitation, any attorneys fees, court
costs, and expenses of litigation, together with Default interest thereon, shall
be payable to Landlord by Tenant on demand. Nothing in this Lease shall be
construed in any way as constituting the consent or request of the Landlord,
expressed or imposed, by inference or otherwise, to any contractor,
subcontractor, laborer, or materialmen, for the performance of any labor, or the
furnishing of any materials for any specific improvement, alteration and repair
of or to the premises or as giving Tenant the right, power or authority, to
contract for or permit the rendering of any service or the furnishing of any
material that would give rise to the filing of any mechanic's liens against the
Premises. Landlord shall have the right to post and keep posted on the premises
any notices, that may be provided by law or which Landlord may deem to be proper
for the protection of Landlord, the Premises and the Building from such liens,
and Tenant shall give Landlord at least 5 days' prior notice of the date of
commencement of any construction on the Premises in order to permit the posting
of such notices.

14. Damage and Destruction. (a) If the premises or the portion of the Building
necessary for Tenant's occupancy should be damaged or destroyed during the term
hereof by any casualty insurable under standard fire and extended coverage
insurance policies, Landlord shall (except as hereafter provided) repair or
rebuild the premises to substantially the condition in which the premises were
immediately prior to such destruction.

     (b) Landlord's obligation under this paragraph shall in no event exceed the
lesser of (1) with respect to the premises, the scope of building standard
improvements installed by Landlord in the original construction of the premises,
or (2) the extent of proceeds received by Landlord or any insurance policy
maintained by Landlord pursuant to paragraph 17(a) below, unless Landlord
nevertheless elects to repair or rebuild the premises.

     (c) The minimum rent shall be abated proportionately during any period in
which, by reason of any damage or destruction not occasioned by the negligence
or willful misconduct of Tenant or Tenant's employees or invitees, there is a
substantial interference with the operation of the business of Tenant. Such
abatement shall be proportional to the measure of business in the Premises which
Tenant may be required to discontinue. The abatement shall continue for the
period commencing with such destruction or damage and ending with the completion
by the Landlord of such work, repair or reconstruction as Landlord is obligated
to do.

     (d) Notwithstanding the foregoing, if the premises, or the portion of the
Building necessary for Tenant's occupancy should be damaged or destroyed (1) to
the extent of 10% or more of the then replacement value of either, (2) in the
last year of the term hereof, (3) by a cause or casualty other than those
covered by fire and extended coverage insurance, or (4) to the extent that it
would take, in Landlord's opinion, in excess of 180 days to complete the
requisite repairs, then Landlord or Tenant may either terminate this Lease or
elect to repair or restore said damage or destruction, in which event


                                       9







Landlord shall repair or rebuild the same as provided in subparagraph (a) above.
If such damage or destruction occurs and this Lease is not so terminated by
Landlord, this Lease shall remain in full force and effect. The parties hereby
waive the provisions of any law that would dictate automatic termination or
grant either party an option to terminate in the event of damage or destruction.
Landlord's election to terminate Landlord's obligation under this paragraph
shall be exercised by written notice to Tenant given within 60 days following
the damage or destruction. Such notice shall set forth the effective date of the
termination of this Lease.

     (e) Upon the completion of any such work of repair or restoration by
Landlord, Tenant shall forthwith repair and restore all other parts of the
premises including without limitation, non-building standard leasehold
improvements and all trade fixtures, equipment, furnishings, signs and other
improvements originally installed by Tenant, subject to the requirements of
subparagraph 12(a) above.

15. Indemnification. Except to the extent caused by the negligence or willful
misconduct of Landlord or Landlord's agents, employees or invitees, Landlord
shall not be liable to Tenant and Tenant hereby waives all claims against
Landlord for any injury to or death of any person of damage to or destruction of
property in or about the premises or the Building by or from any cause
whatsoever, including, without limitation, acts of other tenants or other third
parties, gas, fire, oil, electricity or leakage of any character from the roof,
walls, basement or other portion of the premises or the Building. Except to the
extent caused by the negligence or willful misconduct of Landlord or Landlord's
agents, employees or invitees, Tenant shall hold Landlord and any ground
Landlord harmless for, from and against and defend Landlord against any and all
claims, liability, damage or loss, and for, from and against all costs and
expenses, including reasonable attorneys' fees, arising out of any injury to or
death of any person or damage to or destruction of any property, from any cause
whatsoever (except any cause resulting solely from the negligence or willful act
of Landlord, its authorized agents or employees) to the extent: (i) occurring in
or about the Premises , or (ii) occurring on or about any portion of the common
areas or elsewhere in or about the Building, but only to the extent that such
injury or damage shall be caused in whole or in part by the act, neglect,
default or omission of any duty by Tenant, its agents, employees or invitees or
otherwise by any conduct or transactions of any of said persons in or about or
concerning the premises, including any failure of Tenant to observe or perform
any of its obligations hereunder. The provisions of this paragraph 15 shall
survive the termination of this Lease with respect to any damage, injury or
death occurring prior to such termination for a maximum of one year.

16. Insurance.

     (a) Tenant shall procure and maintain in full force and effect during the
entire term hereof, at its own expense and in companies acceptable to Landlord,
the following policy or policies of insurance.

         (1) Comprehensive liability insurance, including property damage,
insuring Landlord and the Building, as Landlord may designate, hereinafter
called additional designated insured from and against all claims, demands,
actions or liability for injury to or death of any persons, and for damage to
property arising from or related to the use of occupancy of the premises or the
operation of Tenant's business. No deductible shall be carried under this
coverage without the prior written consent of Landlord. Such policy shall
contain but not be limited to, coverage for premises and operations, products
and completed operations, blanket contractual, personal injury, operations,
ownership, maintenance and use of owned, non-owned, or hired automobiles, bodily
injury and property damage. The policy shall have limits in amounts not less
than $1,000,000 per person and per occurrence, with an aggregate limit of
$2,000,000. This insurance shall carry a contractual coverage endorsement
specifically insuring the performance by Tenant of its indemnity agreement
contained in paragraph 15 above. If in the opinion of Landlord's insurance
advisor, acting reasonably based on a substantial increase in recovered
liability claims, the aforesaid amounts of coverage are no longer adequate, then
such coverage shall be proportionately increased.

         (2) Worker's Compensation Insurance and Employer's Liability Insurance
with a limit of no less than that amount required by law, provided that
Employer's Liability Insurance shall have a minimum coverage of $1,000,000 per
person and per occurrence.

         (3) Fire insurance with standard extended coverage of all risk
endorsement, including, without limitation, vandalism and malicious mischief, to
extent of 90% of the replacement value of all furnishings, trade fixtures,
leasehold improvements, equipment, merchandise and other personal property and
leasehold improvements from time to time situated in, on or upon the premises.
As long as this Lease is in effect, the proceeds from any such insurance shall
be held in trust to be used only for the repair or replacement of the
improvements, fixtures and other property so insured.

     (b) Landlord may elect to procure and maintain liability insurance and
insurance covering fire and such other risks of direct indirect loss or damage
as it reasonably deems appropriate, including extended and broad form coverage
risks, mudslide, land subsidence, volcanic eruption, flood and earthquake, on
leasehold as improvements in the Building. Tenant shall reimburse Landlord for
the costs of all such insurance as part of Operating Expenses reimbursable
pursuant to paragraph 2. Any insurance coverage herein provided shall be for the
benefit of Landlord, Tenant and any additional designated insured, as their


                                       10







interests may appear, Tenant shall not adjust losses or execute proofs of loss
under such policies without Landlord's prior written approval.

     (c) Should this Lease be canceled pursuant to the provisions of paragraph
14 above by reason of damage or destruction and Tenant is thus relieved of its
obligation to restore or rebuild the improvements on the premises, any insurance
proceeds for damage to the premises, including all fixtures and leasehold except
Tenant's furnishings, equipment and trade fixtures, improvements thereon, shall
belong to Landlord, free and clear of any claims by Tenant.

     (d) All policies of insurance described in this paragraph 16 of which
Tenant is to procure and maintain, shall be issued by good, responsible
companies, reasonably acceptable to Landlord and qualified to do business in the
state in which the Building is situated. Executed copies of such policies of
insurance or, at Landlord's election, certificates thereof, shall be delivered
to Landlord and any additional designated insureds within 10 days after delivery
of possession of the premises to Tenant and thereafter within 30 days prior to
the termination or expiration of the term of each existing policy. All public
liability and property damage policies shall contain the following provisions:
(1) Landlord, and any additional designated insureds although named as insured,
shall nevertheless be entitled to recovery under said policies for any loss
occasioned to them, their servants, agents and employees by reason of the
negligence of Tenant, its officers, agents or employees; (2) the company writing
such policy shall agree to give Landlord and any additional designated insured
not less than 30 days notice in writing prior to any cancellation, reduction or
modification of such insurance; and (3) at the election of Landlord's mortgagee,
the proceeds of any insurance shall be paid to a trustee or depository
designated by Landlord's mortgagee. All public liability, property damage and
other casualty policies shall be written as primary policies, not entitled to
contribution from, nor contributing with, any coverage which Landlord may carry.

     Tenant hereby acknowledges that the late delivery by Tenant to Landlord of
the insurance certificates or policies referred to above will cause Landlord to
incur costs not contemplated by this lease, the exact amount of which will be
extremely difficult to ascertain.

     Such costs include, but are not limited to, processing and accounting
charges and penalties which may be imposed on Landlord by the terms of any
mortgage or trust deed covering the premises. Accordingly, if any insurance
certificate or policy required to be delivered by Tenant above shall not be
received by Landlord at the time prescribed above, Tenant shall pay to Landlord
a charge in the sum of $300. The parties hereby agree that such charge
represents a fair and reasonable estimate of the costs Landlord will incur by
reason of late delivery by Tenant, and acceptance of such charge by Landlord
shall in no event constitute a waiver of Tenant's default with respect to such
late delivery, nor prevent Landlord from exercising any of the other rights and
remedies available to Landlord hereunder or at law.

     (e) Notwithstanding anything to the contrary contained within this
paragraph, Tenant's obligations to carry the insurance provided for herein may
be brought within the coverage of the so-called blanket policy or policies of
insurance carried and maintained by Tenant; provided, however, that (1) Landlord
and such other persons shall be named as additional insureds thereunder as their
interests may appear; (2) the coverage afforded to Landlord and such other
persons will not be reduced of diminished by reason of the use of such blanket
policy of insurance; and (3) all other requirements set forth herein are
otherwise satisfied.

     (f) If Tenant should fail either to acquire the insurance required pursuant
to this paragraph 16 and to pay the premiums therefor or to deliver required
certificates or policies, Landlord may in addition to any other rights and
remedies available to Landlord, acquire such insurance and pay the requisite
premiums therefor, which premiums shall be payable by Tenant to Landlord
immediately upon demand.

     (g) Landlord and Tenant hereby waive any rights each may have against the
other for loss or damage to its property or property in which it may have an
interest where such loss is caused by a peril of the type generally covered by
fire insurance with extended coverage or arising from any cause which the
claiming party was obligated to insure against under this Lease, and each party
on behalf of its insurer waives any right of subrogation that the insurer might
otherwise have against the other party. The parties agree to cause their
respective insurance companies insuring the premises or insuring their property
on or in the premises to execute a waiver of any such rights of subrogation.

17. Condemnation.

     (a) The term "total taking" means the taking of the fee title or Landlord's
master leasehold estate to so much of the premises or a portion of the Building
necessary for Tenant's occupancy by right of eminent domain or other authority
of law, or a voluntary transfer under the threat of the exercise thereof, that
the premises are not suitable for Tenant's intended use. The term "partial
taking" means the taking of only a portion of the premises or the Building which
does not constitute a total taking as above defined.

     (b) If during the term hereof there shall be a total taking then this
Lease, and the leasehold estate of Tenant in and to the premises, shall cease
and terminate as of the date possession is taken. As used in this paragraph, the
phrase date possession is taken means the date of taking actual physical
possession thereof by the condemning authority or such earlier date as the
condemning authority gives notice that it shall be deemed to have taken
possession.

     (c) If during the term hereof there shall be a partial taking of the
premises, this Lease shall terminate as to the portion of the premises taken on
the date on which actual possession of the portion of the


                                       11







premises is taken pursuant to the eminant domain proceedings and this Lease
shall continue in full force and effect as the remainder of the premises. The
minimum rent payable by Tenant for the balance of the term shall be abated in
the ratio that the net rentable area of the premises taken bears to the net
rentable area of the premises immediately prior to such taking, and Landlord
shall make all necessary repairs or alterations to make the remaining premises a
complete architectural unit, suitable for Tenant's permitted use hereunder.

     (d) All compensation and damages awarded for the taking of the premises,
any portion thereof, or the whole or any portion of the common area or Building
shall, except as otherwise herein provided, belong to and be the sole property
of Landlord, and Tenant shall not have any claim or be entitled to any award for
diminution in value of its rights hereunder or for the value of any unexpired
term of this Lease; provided, however, that Tenant shall be entitled to make its
own claim for, and receive separate award that may be made for Tenant's loss of
business or for the taking of or injury to Tenant's improvements, or on account
of any cost or loss Tenant may sustain the removal of Tenant's trade fixtures,
equipment, and furnishings, or as a result of any alterations, modifications or
repairs which may be reasonably required by Tenant in order to place the
remaining portion of the premises, and for Tenant's moving relocation expenses
not so condemned in a suitable condition for the continuance of Tenant's
occupancy. The Tenant's award pursuant to this subparagraph shall not reduce
Landlord's award.

     (e) If this Lease is terminated pursuant to the provisions of this
paragraph 17, then all rentals and other charges payable by Tenant to Landlord
hereunder shall be paid up to the date upon which possession shall be taken by
the condemning agency and any rentals and other charges paid in advance and
allocable to the period after the date possession is taken, and the parties
shall thereupon be released from all further liability hereunder.

18. Compliance With Legal Requirements. Tenant shall at its sole cost and
expense 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, as well as the
provisions of all recorded documents affecting the premises, as they relate to
or affect the condition, use or occupancy of the premises, excluding
requirements of structural changes not related to or affected by improvements
made by or for Tenant or Tenant's use of the premises.

19. Assignment and Subletting. To the extent tenant occupies the majority of the
space within the Premises and is not in default under the Lease, Tenant shall be
permitted to sublease a minority of the space within the Premises to subagents
and /or clients, without Landlord's prior consent. However, all such permitted
sublessees shall abide by and comply with the terms and conditions of this
lease.

     (a) Except for the aforementioned permitted subletting, Tenant shall not
transfer, assign, sublet, enter into license or concession agreements, or
hypothecate this Lease or the Tenant's interest in and to the premises without
first procuring the written consent of Landlord, which consent shall not
unreasonably be withheld, conditioned or delayed. Any such attempted transfer,
assignment, subletting license or concession agreement or hypothecation without
Landlord's consent shall be void and shall, at the option of Landlord, terminate
this Lease. 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. Tenant agrees to reimburse Landlord for Landlords reasonable
attorneys' fees incurred in conjunction with the processing and documentation of
any such requested transfer, assignment, subletting, licensing or concession
agreement, or hypothecation of this Lease or Tenant's interest in and to the
premises. As it pertains to this Lease, any overage or other compensation above
the base rental established herein paid to Tenant in any sublease or assignment
shall belong in its entirety to Landlord.

     (b) Before entering into any assignment of this Lease or into a sublease of
all or part of the Premises (other than a sublease permitted under this Lease
without Landlord's prior consent), Tenant shall give written notice to Landlord
identifying the intended assignee or subtenant by name and address and
specifying the terms of the intended assignment or sublease. For a period of
thirty (30) days after such notice is given, Landlord shall have the right by
written notice to Tenant to (i) in the case of a proposed sublease, either (A)
sublet from tenant any portion of the premises proposed to be sublet for the
term for which such portion is proposed to be sublet but at the same rent as
Tenant is required by pay to Landlord under this Lease for the same space,
computed on a pro rata square footage basis, or (B) if the proposed subletting
is for substantially the remaining period of the term of this Lease, terminate
this Lease or terminate this Lease as is pertains to the portion of the premises
so proposed by Tenant to be sublet, or (ii) in the case of a proposed
assignment, terminate this Lease. If Landlord so terminates this Lease, such
termination shall be as of the date specified in Landlord's notice. If Landlord
so terminates this Lease, Landlord may, if it elects, enter into a new lease
covering the premises or a portion thereof with the intended assignee or
subtenant on such terms as Landlord and such person may agree, or enter into a
new lease covering the premises or a portion thereof with any other person; in
such event, Tenant shall not be entitled to any portion of the profit, if any,
which Landlord may realize on account of such termination and reletting.
Landlord's exercise of its aforesaid option shall not be construed to impose any


                                       12







liability upon Landlord with respect to any real estate brokerage commission(s)
or any other costs or expenses incurred by Tenant in connection with its
proposed subletting or assignment.

     (c) If Tenant complies with the provisions of this section and Landlord
does not exercise an option provided to Landlord under (b) above, Landlord's
consent to a proposed assignment or sublet shall not be unreasonably withheld,
conditioned or delayed. 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 is shall be reasonable for Landlord to
withhold its consent in any of the following instances:

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

         (2) in Landlord's reasonable judgment, the use of the premises by the
proposed assignee or sublessee would entail any alterations which would lessen
the value of the leasehold improvements in the premises, or would require
material increased services by Landlord;

         (3) in Landlord's reasonable judgment, the financial worth of the
proposed assignee or sublessee does not meet the credit standards applied by
Landlord for other tenants under leases with comparable terms;

         (4) in Landlord's reasonable judgment, the character, reputation or
business of tenant is inconsistent with the desired tenant-mix or the quality of
other tenancies in the Building;

         (5) Landlord has received from any prior lessor to the proposed
assignee or subtenant a negative report concerning such prior lessor's
experience with the proposed assignee or subtenant;

         (6) Landlord has experienced previous defaults by or is in litigation
with the proposed assignee or subtenant;


         (7) (i) the proposed assignee's or subtenant's anticipated use of the
premises involves the generation, storage, use, treatment or disposal of
Hazardous Material; (ii) the proposed assignee or subtenant has been required by
any prior landlord, lender or governmental authority to take remedial action in
connection with Hazardous Material contaminating a property if the contamination
resulted from such assignee's or subtenant's actions or use of the property in
question; or (iii) the proposed assignee or subtenant is subject to an
enforcement order issued by any governmental authority in connection with the
use, disposal or storage of a Hazardous Material;

         (8) the use of the premises by the proposed assignee or subtenant will
violate any applicable law, ordinance or regulation;

         (9) the proposed assignment or sublease will create a vacancy elsewhere
in the Building;

         (10) the proposed assignee or subtenant, or any person that, directly
or indirectly, controls, is controlled by, or is under common control with the
proposed assignee or subtenant, is then an occupant of the Building;

         (11) the proposed assignee or subtenant is a person with whom Landlord
is negotiating to lease space in the Building;

         (12) the proposed assignment or sublease fails to include all of the
terms and provisions required to be included therein pursuant to this paragraph;

         (13) Tenant is in default of any obligation of Tenant under this Lease,
or Tenant has defaulted under this Lease on three (3) or more occasions during
the twelve (12) months preceding the date that Tenant shall request consent; or

         (14) in the case of a subletting of less that the entire premises, if
the subletting would result in the division of the premises into more than two
subparcels or would require access to be provided through space leased or held
for lease to another tenant or improvements to be made outside of the premises.

     (d) in the case of an assignment, 100% of any sums or other economic
consideration received by Tenant as a result of such assignment shall be paid to
Landlord after first deducting the unamortized cost of leasehold improvements
paid by Tenant, and the cost of any real estate commissions incurred in
connection with such assignment. In the case of a subletting, 100% of any sum or
economic consideration received by Tenant as a result of such subletting shall
be paid to Landlord after first deducting (1) the rental due hereunder, prorated
to reflect only rental allocable to the sublet portion of the premises, and (2)
the cost of any real estate commissions incurred in connection with such
subletting, amortized over the term of the sublease. Upon Landlord's request,
Tenant shall assign to Landlord all amounts to be paid to Tenant by any such
subtenant or assignee and shall direct such subtenant or assignee to pay the
same directly to Landlord.

     (e) Notwithstanding the provisions of subparagraphs (a) and (b) above,
Tenant may assign this Lease or sublet the premises or any portion thereof,
without Landlord's consent, to any corporation which controls, is controlled by
or is under common control with Tenant or to any corporation resulting from the
merger or consolidation with Tenant so long as there is no change in control of
Tenant, provided that said assignee assumes, in full, the obligations of Tenant
under this Lease.

     (f) Regardless of Landlord's consent, no subletting, assignment,
hypothecation, license or concession shall release Tenant of Tenant's obligation
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, subletting, hypothecation,
license or concession agreement shall not be deemed consent to any subsequent
assignment, subletting, hypothecation, license or concession agreement. In


                                       13








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 he necessity of exhausting remedies against such assignee or
successor. Landlord may consent to subsequent assignments or modifications to
this Lease, with assignees of Tenant without notifying Tenant or any successor
of Tenant, and without obtaining its or their consent thereto and such action
shall not relieve Tenant of liability under this Lease.

     (g) Each transfer, assignment, subletting, license, concession agreement
and hypothecation to which there has been consent or which has been permitted
pursuant to subparagraph (e) above, shall be by an instrument in form
satisfactory to Landlord and shall be executed by the transferor, assignor,
sublessor, licenser, concessionaire, hypothecator or mortgagor and the
transferee, assignee, sublessee, licensee, concessionaire or mortgagee in each
instance, as the case may be; and each transferee, assignee or sublessee shall
agree in writing for the benefit of Landlord to assume, to be bound by, and to
perform the terms, covenants and conditions of this Lease to be done, kept and
performed by Tenant. One executed copy of such instrument shall be delivered to
Landlord. No sublessee other than Landlord shall have the right further to
sublet.

     (h) In the event Tenant shall assign or sublet the premises or request
Landlord's consent to a proposed assignment, subletting, or other act, then
Tenant shall pay (i) to Landlord and administrative fee in the sum of $300 and
(ii) Landlord's reasonable attorneys' fees incurred in connection therewith.

     (i) For the purpose of this Lease, a transfer of more than (i) 50% of the
partnership interest in Tenant if Tenant is a partnership, or (ii) 50% of the
outstanding voting stock if Tenant is a corporation, shall constitute an
assignment of this Lease. Notwithstanding anything to the contrary in the Lease,
the terms of this Section 19 (i) shall not apply to Tenant if Tenant is a
publicly traded company. Further, an initial public trading of Tenant's stock
shall not constitute an assignment or transfer for purposes of this Section 19
(i).

20. Rules and Regulations. Tenant shall faithfully observe and comply with the
rules and regulations attached to this Lease as Exhibit C 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 such rules and regulations.

21. Landlord's Access. Landlord may enter the premises at reasonable hours with
reasonable advance notice to (1) inspect he same; (2) exhibit the same to
prospective purchasers, mortgagees or tenants; (3) determine whether Tenant is
complying with all its obligations hereunder; (4) supply any service to be
provided by Landlord to Tenant hereunder; (5) post notices of
non-responsibility; (6) post "to Lease" signs of reasonable size upon the
premises during the last 90 day of the term hereof; and (7) make repairs
required of Landlord under the terms hereof or repairs to any adjoining space or
utility services or make repairs, alterations or additions to the premises or
any other portion of the Building, provided, however, that all such work shall
be done as promptly as reasonably possible and so as to cause as little
interference to Tenant as reasonably possible and that any repairs, alterations,
or additions to the premises shall, when completed, not materially and adversely
affect Tenant's use of the premises. 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 such doors in an emergency in order to
obtain entry to the premises. Any entry to the premises obtained by Landlord by
any of such means shall not under any circumstances be construed or deemed to be
a forcible or unlawful entry into or a detainer of the premises or an eviction,
actual or constructive, of Tenant from the premises, or any portion thereof.

22. Default. If: (1) Tenant shall fail to pay any rent or other sum payable
hereunder for a period of 10 days after written notice from Landlord and the
same is due; (2) Tenant shall fail to observe, keep or perform any of the other
terms, covenants, agreements or conditions contained herein or in the rules and
regulations to be observed or performed by Tenant and such default continues for
a period of 30 days after notice by Landlord or beyond the time reasonably
necessary for cure if such default is of a nature to require in excess of 30
days to remedy; (3) Tenant shall become bankrupt or insolvent, or make an
assignment for the benefit of creditors, or take or have taken against Tenant
any proceedings of any kind under any provision of the Federal Bankruptcy Act or
under any other insolvency, bankruptcy or reorganization act or, in the event
any such proceedings are involuntary, such involuntary proceedings are not
dismissed within 60 days thereafter; (4) a receiver is appointed for a
substantial part of the assets of Tenant; (5) Tenant shall vacate or abandon the
premises; or (6) this Lease or any interest of Tenant hereunder shall be levied
upon by any attachment or execution, then any such event shall constitute an
event of default by Tenant. 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,
do any of the following:


                                       14








     (a) Landlord shall have the right, so long as such default continues, to
give notice of termination to Tenant. On the date specified in such notice
(which shall not be less than 3 days after the giving of 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, 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) The amount of damages which Landlord may recover in event of such
termination shall include, without limitation, (1) the amount at the time of
award of (A) unpaid rental earned and other sums owed by Tenant to Landlord
hereunder, as of the time of termination, together with interest thereon as
provided on this Lease, (B) the amount by which the unpaid rent which would have
been earned during the period from termination until the award exceeds the
amount of such rental loss that Tenant proves could be reasonably avoided and
(C) the amount by which the unpaid rent for the balance of the term after the
time of the award exceeds the amount of such rental loss that Tenant proves
could be reasonably avoided (computed by discounting such amount at the discount
rate of the Federal Reserve Bank of San Francisco at the time of award pus one
percent), (2) all legal expenses and other related costs incurred by Landlord
following Tenant's default including reasonable attorneys' fees incurred in
collecting any amount owed hereunder, (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, and (4) all costs (including
without limitation any brokerage commissions) incurred by Landlord in reletting
the premises. For the purpose of determining the unpaid rent in the event of a
termination of this Lease, the monthly rent reserved in this Lease shall be
deemed to be the sum of (1) the minimum rent and (2) the Operating Expense
charge and any other amounts last payable by Tenant pursuant to paragraphs 5, 6,
7, 10, 13, and 16 above.

     (d) Following the termination of this Lease or Tenant's right of possession
hereunder (or upon Tenant's failure to remove its personal property from the
premises after the expiration of the term of the Lease), Landlord may remove its
personal property from the premises after the expiration of the term of such
property in a public or private warehouse or elsewhere at the sole cost and
expense of Tenant; such Wharehouser shall have all rights and remedies provided
by law against Tenant as the owner of such property. In addition, 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 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
Tenants shall indemnify and hold Landlord free and harmless for, from and
against any and all losses, costs and damages, including without limitation all
costs of court and attorneys' fees of Landlord occasioned thereby.

     (e) Landlord shall have the right to cause a receiver to be appointed in
any action against Tenant to take possession of the premises and to collect the
rents or profits derived therefrom. The appointment of such receiver shall not
constitute an election on the part of Landlord to terminate this Lease unless
notice of such intention is given to Tenant.

     (f) Even though Tenant has breached this Lease and/or abandoned the
premises, this Lease shall continue in effect for so long as Landlord does not
terminate this Lease, and Landlord may enforce all its rights and remedies under
this Lease, including the right to recover the rental in periodic actions as it
becomes due under this Lease. In such event, Landlord may re-enter the premises
and remove all persons and property if the premises have not been vacated, using
any available summary proceedings, without such re-entry or removal being deemed
a termination or acceptance of surrender of this Lease. Landlord may then elect
to relet the premises for the account of Tenant for a period which may extend
beyond the term hereof, and upon such other terms as Landlord may reasonably
deem appropriate. Tenant shall reimburse Landlord upon demand for all costs
incurred by Landlord in connection with such reletting, including, without
limitation, necessary restoration, renovation, or improvement costs, reasonable
attorneys' fees and brokerage commissions. The proceeds of such reletting shall
be applied first to any sums then due and payable Landlord from Tenant,
including the reimbursement described above. In balance, if any, shall be
applied to the payment of future rent as it becomes due hereunder.

23. Landlord's Right to Cure Default. All covenants and agreements to be
performed by Tenant under any of the terms of this Lease shall be at its sole
cost and expense and without any abatement of rent. If Tenant shall fail to pay
any sum of money, other than rent, 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 have become an event of default under paragraph 22 above, Landlord
may, but shall not be obligated to do so, 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.
All sums so paid by Landlord and all necessary incidental costs shall be deemed
additional rent hereunder and shall be payable


                                       15







to Landlord on demand together with Default Interest from the date of
expenditure by Landlord until repaid.

24. Attorneys' Fees. If as a result of any breach or default in the performance
of any of the provisions of this Lease or in order to enforce its rights
hereunder, Landlord uses the services of an attorney in a nonjudicial action, at
trial, or upon an appeal, to secure compliance with such provisions or recover
damages therefor, to exercise such rights, or to terminate this Lease or evict
Tenant, Tenant shall reimburse Landlord upon demand for any and all reasonable
attorneys' fees and expenses so incurred by Landlord if Landlord prevails. If
tenant shall be the prevailing party in any legal action brought by Landlord
against Tenant, Tenant shall be entitled to recover for the fees of its
attorneys in such an amount as the court may adjudge reasonable. Tenant, to the
extent permitted by law, does hereby waive any further right to attorneys' fees
provided by applicable state or federal law.

25. Subordination.

     a) This Lease shall be subject and subordinated at all times to all ground
or underlying leases which may hereafter be executed affecting the Building, and
the lien of all mortgages and deeds of trust in any amount or amounts whatsoever
now or hereafter placed on or against the Building or on or against Landlord's
interest or estate therein or on or against all such ground or underlying
leases, all without the necessity of having further instruments executed on the
part of Tenant to effectuate such subordination. Notwithstanding the foregoing
(1) in the event of termination for any reason whatsoever of any ground or
underlying lease hereafter executed, 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 or
other sums or be otherwise in default under the terms of this Lease, and Tenant
shall attorn to the Landlord of any such ground or underlying Lease, or, if
requested, enter into a new lease for the balance of the original or extended
term hereof then remaining upon the same terms and provisions as are in this
Lease contained; (2) in the event of a foreclosure of any such mortgage or deed
of trust hereafter executed or of any other action or proceeding for the
enforcement thereof, or of any sale thereunder, this Lease will not be barred,
terminated, cut off or foreclosed nor will the rights and possession of Tenant
thereunder be disturbed if Tenant shall not then be in default in the payment of
rental or other sums or be otherwise in default under the terms of this Lease,
and Tenant shall attorn to the purchaser at such foreclosure, sale or other
action or proceeding; and (3) Tenant agrees to execute and deliver upon demand
such further reasonable instruments, as determined by Landlord and/or lender,
evidencing such subordination of this Lease, ground or underlying leases, and to
the lien of any such mortgages or deed of trust as may reasonably be required by
Landlord. Tenant's covenant to subordinate this Lease to ground or underlying
leases, and mortgages or deeds of trust hereafter executed is conditioned upon
each such senior instrument containing the commitments specified in the
preceding clauses (1) and (2); and (4) Tenant further waives the provisions of
any statute of rule of law, now or hereafter in effect, which may give or
purport to give Tenant any right or election to terminate or otherwise adversely
affect the Lease and the obligations of Tenant hereunder in the event of such
foreclosure or sale.

     (b) Tenant shall mail by certified or registered post, return receipt
requested, or personally deliver to any Landlord under a ground lease or
mortgage lender a duplicate copy of any and all notices in writing which Tenant
may from time to time give to or serve upon Landlord pursuant of the provisions
of this Lease, and such copy shall be mailed or delivered at, or as near as
possible to, the same time such notices are given or served by Tenant. No notice
by Tenant to Landlord hereunder shall be deemed to have been given unless and
until a copy thereof shall have been so mailed or delivered to any ground lease
landlord or mortgage lender. Upon the execution of any ground lease or mortgage,
Tenant shall be informed in writing of the vesting of the interest evidenced by
the ground lease or mortgage.

     (c) Should any event of default by Landlord under this Lease occur, any
ground lease landlord or mortgage lender shall have 30 days after receipt of
written notice from Tenant setting forth the nature of such event of default
within which to remedy the default; provided that in the case of a default which
cannot with due diligence be cured within such 30-day period, the ground lease
landlord or mortgage lender shall have the additional time reasonably necessary
to accomplish the cure, provided that (i) it has commenced the curing within
such 30 days and (ii) thereafter diligently prosecutes the cure to completion.
If the default is such that the possession of the premises may be reasonably
necessary to remedy the default, any ground lease landlord or mortgage lender
shall have a reasonable additional time after the expiration of such 30-day
period within which to remedy such default, provided that (i) it shall have
fully cured any default in the payment of any monetary obligations of Landlord
under this Lease within 30 day period and shall continue to pay currently such
monetary obligations as and when the same are due and (ii) it shall have
acquired Landlord's estate or commenced foreclosure or other appropriate
proceedings within such period, or prior thereto, and is diligently prosecuting
any such proceedings.

26. 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


                                       16







subleases or subtenancies, or may, at the option of Landlord, operate as a
assignment to it of any or all such subleases or subtenancies.

27. Sale by Landlord. In the event the original Landlord hereunder, or any
successor owner of the Building, shall sell or convey the Building, all
liabilities and obligations on the part of the original Landlord, or such
successor owner, under this Lease accruing thereafter shall terminate, and
thereupon all such liabilities and obligations shall be binding upon the new
owner. Tenant agrees to attorn to such new owner.

28. Estoppel Certificate. At any time from time to time, but on not less than 10
days prior notice by Landlord, Tenant will execute, acknowledge and deliver to
Landlord, promptly upon request, a certificate certifying (a) that this Lease is
unmodified and in full force and effect (or, if there have been modifications,
that his Lease is in full force and effect, as modified, and stating the date
and nature of each such modification), (b) the date, if any, to which rental and
other sums payable hereunder have been paid, (c) that no notice has been
received by tenant of any default which has not been cured, except as to
defaults specified in said certificate, and (d) such other matters as may be
reasonably requested by Landlord and/or lender. Tenant agrees it shall execute
an estoppel certificate which is consistent with the terms and conditions of the
lease and which does not modify or lessen Tenant's position in the lease. Tenant
hereby appoints Landlord as Tenant's attorney-in-fact to execute, acknowledge
and deliver such certificate if Tenant shall fail to do so within the
above-prescribed time period. Any such certificate may be relied upon by any
prospective purchaser, mortgagee of beneficiary under any deed or trust of the
Building.

29. Holdover Tenancy. If, without objection by Landlord, Tenant holds possession
of the premises after expiration of the term of this Lease, Tenant shall become
a Tenant from month to month upon all of the terms specified in thi s Lease as
applicable immediately prior to expiration of such term, except that minimum
rent will be 150% of that applicable immediately prior to expiration of such
term. Each party shall give the other notice of its intention to terminate such
tenancy at least one month prior to the date of such termination.

30. Building Security.

     (a) Landlord shall have the right, but not the obligation, from time to
time to adopt such policies, procedures and programs as it shall deem necessary
or appropriate for the security of the Building, and Tenant shall cooperate with
Landlord in the enforcement of the policies, procedures and programs adopted by
Landlord.

     (b) Without limiting the generality of subparagraph (a) above, 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 holidays all persons who do
not present a valid pass to the Building. If Landlord does elect to adopt such
pass system, Landlord shall furnish passes to persons for whom Tenant requests
the same in writing, and Tenant shall be responsible for all person for whom it
request 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 form the Building of any person. In case of invasion,
mob, riot, public demonstration 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, including closing doors.

     (c) In the event of any picketing, public demonstration or other threat to
the security of the Building that is directly attributable to Tenant, Tenant
shall reimburse Landlord for any costs incurred by Landlord in connection with
such picketing, demonstration or other threat in order to protect the security
of the Building.

31. Parking.

     (a) Any parking areas appurtenant or within the Building, or designated
portions thereof, shall be available for the use of Tenants of the Building,
and, to the extent designated by Landlord, the employees, agents, customers and
invitees of said tenants, subject to the rules, regulations, charges, and rates
as set forth by the Landlord from time to time (see attached); provided,
however, that Landlord may restrict to certain portions of the parking areas,
parking for Tenant or other tenants of the Building and their employees and
agents, and may designate other areas to be used only by customers and invitees
of Tenants of the Building.

Notwithstanding anything herein contained, Landlord reserves the right from time
to time to make reasonable changes in, additions to, and deletions from parking
areas as now or hereafter constituted.

     (b) Landlord, or its agents, shall have the right to cause to be removed
any cars, trucks, trailers or other motorized or nonmotorized vehicles of
tenants, its employees, agents, guests or invitees that are parked in violation
hereof or in violation of regulations of the Building, without liability of any
kind to Landlord, its agents or employees, and Tenant agrees to hold Landlord
harmless from and defend it


                                       17








against any and all claims, losses, or damages and demands asserted or arising
in respect to or in connection with the removal of any such vehicles as
aforesaid. Tenant shall from time to time upon request of Landlord supply
Landlord with a list of license plate numbers of all vehicles owned by its
employees and agents who are to have parking privileges hereunder. Landlord may,
as a part of the regulations promulgated by it for the use of the parking areas,
require that Tenant cause any identification sticker issued by Landlord to be
affixed to the bumpers or other designated location on all vehicles of Tenant
and its employees and agents who are authorized to park in the parking areas.

32. Security Deposit. If any security deposit has been made herewith, which sum
is specified in the Basic Lease Information (the "Deposit"),Tenant and Landlord
shall treat such sum as a security deposit and not a last month's rent. The
Deposit shall be held in a co-mingled account by Landlord, as security for the
faithful performance by Tenant of all of the provisions of the Lease to be
performed or observed by Tenant. If Tenant fails to pay rent or other charges
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 Deposit for
the payment of any rent or other charge in default or for reason of Tenant's
default, or compensate Landlord for any loss or damage which Landlord may suffer
thereby. If Landlord so uses or applies all or any portion of the Deposit,
Tenant shall within ten (10) days after demand therefore deposit cash with
Landlord in an amount sufficient to restore the Deposit to the full amount
thereof and Tenant's failure to do so shall be a material breach of this Lease.

Landlord shall not be required to keep the Deposit separate from its general
accounts. If Tenant performs all of Tenant's obligations hereunder, the Deposit,
or so much thereof as has not theretofore been applied by Landlord, shall be
returned, without payment of interest or other increment for its use, to Tenant
(or, at Landlord's option, to the last assignee, if any, of Tenant's interest
hereunder) at the expiration of the Term hereof, and after Tenant has vacated
the Premises. No trust relationship is created herein between Landlord and
Tenant with respect to the Deposit.

33. No Partnership. It is expressly understood that Landlord does not, in
any way or for any purpose, become a partner of Tenant in the conduct of its
business, or otherwise, or joint venture or a member of a joint enterprise with
Tenant.

34. Recording. Tenant shall not record this Lease without the prior written
consent of Landlord.

35. Modification and Financing Conditions. Landlord may have obtained financing
and may seek to obtain further financing for the Building, portions thereof, and
the operation thereof, secured by mortgages or deeds of trust encumbering the
Building. Landlord may also elect to enter into a ground lease of the Building.
If any mortgage lender should require, as a condition to such financing, or
pursuant to rights of approval set forth in the mortgage or deed of trust
encumbering the Building, or if any ground lease should require, as a condition
to such ground lease or pursuant to rights of approval set forth therein, any
modification of the terms or conditions of this Lease, Tenant agrees to execute
such modification or amendment, provided that, such modification or amendment
(a) shall not increase the rental or Tenant's share of any costs in addition to
minimum rent or increase any other Tenant obligation or reduce any right under
the terms hereof which are not provided for hereunder, (b) shall not materially
interfere with Tenant's use or occupancy, and (c) if requested by a mortgage
lender with a lien on the Building or a ground lessee pursuant to a ground lease
effective as of the date hereof, shall have been requested prior to 30 days
after the date hereof. If Tenant should refuse to execute any modifications so
required within 10 days after receipt of same, Landlord shall have the right by
notice to Tenant to cancel this Lease, and upon such cancellation Landlord shall
refund any unearned rental or security deposit, and neither party shall have any
liability thereafter accruing under this Lease, except as provided in paragraph
15 above.

36. Waiver. The waiver by Landlord of any term, covenant, agreement or
condition herein contained shall not be deemed to be a waiver of any other then
existing or subsequent breach of the same of any other term, covenant, agreement
or condition herein contained. Nor shall any custom or practice which may
develop between the parties in the administration of the terms hereof be
construed to waive or to lessen the right of the Landlord to insist upon the
performance by Tenant in strict accordance with such terms. The subsequent
acceptance of rent or any other sum of money or other performance hereunder by
Landlord shall not be deemed to be waiver of any preceding breach by Tenant of
any term, covenant, agreement or condition of this Lease, other than the failure
of Tenant to pay the particular rent or other sum so accepted, regardless of
Landlord's knowledge of such preceding breach at the time of acceptance of such
rent or other sum or performance.

37. Notices and Consents. All notices, demand, consents or approval which may be
given by either party to the other hereunder shall be in writing and shall be
deemed to have been fully given when deposited in the United States mail,
registered or certified, return receipt requested, postage prepaid, and


                                       18








addressed as follows: to Tenant at the address specified in the Basic Lease
Information, or to such other place as Tenant may from time to time designate in
a notice to Landlord; to Landlord at the address specified in the Basic Lease
Information, or to such place as Landlord may from time to time designate in a
notice to Tenant; or, in case of Tenant, delivered to Tenant at the premises.
Tenant hereby appoints as its agent to receive the service of all dispossessory
or restraint proceedings and notices thereunder and person or persons in charge
of our occupying the premises at the time, and, if no person shall be in charge
of or occupying the same, then such service may be made by attaching the same on
the main entrance of the premises. Notice will also be delivered to 2815 Second
Avenue, Suite 100, Seattle, Washington, with a copy to Corporate Headquarters.

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
negotiation, arrangements, brochures, agreements and understandings, if any,
between Landlord and Tenant or displayed by Landlord to Tenant with respect tot
the subject matter of this Lease or the Building. There are no representations
between Landlord and Tenant other than those contained in this Lease and all
reliance with respect to any representations is solely upon the representations
contained herein. This lease may not be amended or modified in any respect
whatsoever except by an instrument in writing signed by Landlord and Tenant.

39. Corporate Authority. If Tenant signs as a corporation, each of the person
executing this Lease on behalf of the Tenant does hereby covenant and warrant
that Tenant is a duly authorized and existing corporation, that Tenant is
qualified to do business in the State in which the Buildings situated, that the
corporation has full right and authority to enter into this Lease, and that each
person signing on behalf of the corporation is authorized to do so.

40. Limits to Tenant's Remedy. If Landlord should default in the performance of
its obligations hereunder, it is understood and agreed that any claims by Tenant
against Landlord shall be limited in recourse to Landlord's interest in the
Building. Tenant expressly waives any and all other rights to proceed on a
recourse basis against Landlord, the individual partners of Landlord, or the
officers, directors and shareholders of any corporate partner of Landlord.

41. Arbitration. If there is a dispute between the Landlord and Tenant
concerning the payment of any sums under this Lease, the determination of such
dispute shall be submitted to binding arbitration upon the written demand of
either party delivered to the other party. Such arbitration shall be conducted
in accordance with the Commercial Arbitration Rules of the American Arbitration
Association then in effect; provided there shall be only one (1) arbitrator who
shall be selected by the parties and if the parties cannot agree then who shall
be appointed by the Presiding Judge of the King County Superior Court upon
motion made by either party. Judgment upon the award may be entered in any court
having jurisdiction. The cost and expenses of the arbitration shall be divided
equally between the Landlord and Tenant.

42. Brokers. Landlord is paying the commission due pursuant to the listing
agreement with CB Richard Ellis. As part of the commission owing, Landlord
agrees to pay the commission due to Colliers International in the amount equal
to 3% of the aggregate basic rent for the initial 5-year term of this Lease.
Tenant shall have no liability for paying commissions to CB Richard Ellis or
Colliers International in connection with this Lease. Landlord agrees to defend,
indemnify and hold harmless Tenant against any loss, cost expense or liability
for any compensation, commission, fee or charge, including reasonable attorney's
fees, resulting from any claim of CB Richard Ellis, Colliers International, or
any of their respective employees or agents in connection with this Lease or its
negotiations. Tenant warrants to Landlord that they have not dealt with any
other brokers other than those listed in this paragraph.

43. No Light and Air Easement. No diminution or shutting off of light, air,
or view by any structure which may be erected on land adjacent to or in the
vicinity of the Building shall in any way affect this Lease or impose any
liability on Landlord.

44. Miscellaneous. The words "Landlord" and "Tenant" as used herein shall
include the plural as well as the singular. If there be more that one Tenant,
the obligations hereunder imposed upon Tenant shall be joint and several. 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 terms,
covenants, agreements and conditions herein contained shall, subject to the
provisions as to assignment, apply to and bind the heirs, successors, executors,
administrators and assigns of the parties hereto. If any provisions of this
Lease shall be determined to be illegal or unenforceable, such determination
shall not affect any other provisions of this Lease and all such other
provisions shall remain in full force and effect. Landlord and Tenant agree that
each party and its counsel have reviewed this Lease and that the normal rule of
construction to the effect that ambiguities are to be


                                       19








resolved against the drafting party is not appropriate and shall be
governed by and construed pursuant to the laws of the State in which the
Building is situated.

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

46. Additional Provisions. Except as otherwise provided in Section 42,
above, Tenant and Landlord each agree to defend, indemnify and hold harmless the
other party against any loss, cost expense or liability for any compensation,
commission, fee or charge, including reasonable attorney's fees, resulting from
any claim of any broker, agent or finder not otherwise specified in Section 42,
above, claiming under or through the indemnifying party in connection with this
Lease or its negotiations.

47. Building Transportation Program. Tenant agrees to participate in the Bay
Vista Tower Transportation Management Program as outlined in the Memorandum of
Agreement between Bay Vista Building, the City of Seattle, and Metro, thus,
Tenant shall assume and fulfill Landlord's responsibility to fulfill the
obligations outlined in the agreement as it pertains to subsidizing parking for
car pools, van pools, and providing free transit passes to Tenant's own
employees. A copy of the Memorandum shall be provided by Landlord to Tenant with
the delivery of this Lease. By the execution hereof, Tenant acknowledges receipt
thereof.

48. Governing Law. This Lease is governed by the laws of King County, State
of Washington.

     IN WITNESS HEREOF, Landlord and Tenant have caused this instrument to be
duly executed, sealed and delivered on the date set forth below.



TENANT                                               LANDLORD
                                                  
Cellular Technical Services Company, Inc.,           Bay Vista Office Investors, LLC,
a Delaware corporation                               a Delaware Limited Liability Company
                                                     By: ASA Properties, Inc.
                                                     Its: Managing Member

By: ____________________________                     By:______________________________

Its: ______________________________                  Its:_______________________________



Date of Execution                                    Date of Execution

By Tenant: ________________________                  By Landlord: ____________________




                                       20








                                    EXHIBIT A
                             Description of Building

                                    EXHIBIT B
                             Description of Premises
                               (Final Space Plan)

                                    EXHIBIT C
                              Rules and Regulations

1. The sidewalks, halls, passages, exists, entrances, elevators 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, exists, entrances, elevators, 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.

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 Tenant general
guidelines relating to signs inside the Building on the office floors. Tenant
agrees to 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 without Landlord's prior approval.

3. No Tenant shall employ any person or persons other than the janitor of
Landlord for the purpose of cleaning the premises, unless other wise agreed to
by Landlord in writing. Except with the written consent of Landlord, 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 agreement
in writing, service is extended to a later hour for specifically designated
rooms.

4. The premises shall not be used for lodging or the storage of merchandise held
for sale to the public, and unless ancillary to a restaurant or other food
service use specifically authorized in the lease of a particular Tenant, no
cooking shall be done or permitted by any Tenant on the premises, except that
the preparation of coffee, tea, hot chocolate and similar items for Tenants and
their employees shall be permitted.

5. Landlord will furnish each Tenant with two keys free of charge. Landlord may
make 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. Each
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 Tenant. Each Tenant
shall see that the doors of its premises are closed and securely locked at such
times as Tenant's employees leave the premises.

6. No Tenant shall use or keep in the premises or the Building any kerosene,
gasoline or inflammable or combustible fluid or material or use any method of
heating or air conditioning other than that supplied by Landlord. No Tenant
shall use, keep or permit to be used or kept any foreign 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.

7. 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 an action as Landlord may deem appropriate, including closing entrances to
the Building.


                                       21








8. The toilet rooms, toilets, urinals, wash bowls and other apparatus shall not
be used for any purpose other than that for which they were constructed and no
foreign substance of any kind whatsoever shall be thrown therein. The expense of
any breakage, stoppage of damage resulting from the violation of this rule shall
be borne by the Tenant who, or whose employees or invitees, shall have caused
it. Except with prior consent of Landlord, no Tenant shall sell, or permit the
sale in the premises or use or permit the use of any common area for the sale of
newspapers, magazines, periodicals, theater tickets or any other goods
merchandise or service. Tenant shall not carry on, or permit or allow any
employee or other person to carry on the business of stenography, typewriting,
or any similar business in or from the premises for the service or accommodation
of occupants of any other portion of the Building, nor shall the premises of any
Tenant be used for manufacturing of any kid, or any business or activity other
than that specifically provided for in such Tenant's lease.

10. Tenant shall not use any advertising media which may be heard outside of the
premises and Tenant shall not place or permit the placement of any radio or
television, or other communications antenna, loudspeaker, sound amplifier,
phonograph, searchlight, flashing light or other device of any nature on the
roof or outside of the boundaries of the premises (except for Tenant's approved
identification sign or signs) or at any place `where the same may be seen or
heard outside of the premises.

11. All loading and unloading of merchandise, supplies, materials, garbage and
refuse shall be made only throng such entryways and elevators and at such times
as Landlord shall designate. In its use of the loading areas the Tenant shall
not obstruct or permit the obstruction of said loading area and at no time shall
park or allow its officers, agents or employees to park vehicles therein except
for leading and unloading.

12. Landlord shall have the right, exercisable without notice and without
liability to any Tenant, to change the name and street address of the Building.

13. 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
Tenant.

14. The directory of the Building will be provided for the display of the name
and location of Tenants and a reasonable number of the principal officers,
partners and employees of Tenants, and Landlord reserves the right to exclude
any other names therefrom. Any additional name which Tenant shall desire to
place upon said bulletin board must first be approved by Landlord, and, if so
approved, a charge will be made therefor.

15. 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 window of the Building without the prior written
consent of Landlord. In any event, with the prior written consent of Landlord,
such items shall be installed on the office side of Landlord's standard window
covering and shall in no way be visible from the exterior of the Building.

16. No Tenant shall obtain for use in the premises, ice, drinking water, food
beverage, towel or other similar services, except at such reasonable hours and
under such reasonable regulations as may be fixed by Landlord.

17. Each Tenant shall see that the doors of its premises are closed and locked
and that all water faucets, water apparatus and utilities are shut of before
Tenant or Tenant's employees leave the premises, so as to prevent waste or
damage, and for any default or carelessness in this regard Tenant shall be
liable for, and shall indemnify Landlord against and hold Landlord harmless for,
from and against all injuries 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.

18. No Tenant shall use any portion of the common area for any purpose when the
premises of such Tenant are not open for business or conducting work in
preparation therefore.


                                       22







19. 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.

20. 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 waiver of such Rules and Regulations in favor of any
other Tenant or Tenants, nor prevent Landlord from thereafter enforcing any such
Rules and Regulation against any or all of the Tenants of the Building.

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

22. 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
herein. Landlord shall uniformly enforce (or not) enforce the Rules and
Regulations.

                          PARKING RULES AND REGULATIONS

THESE PARKING RULES AND REGULATIONS supplement the parking requirements for Bay
Vista Office Building. All Tenants, subtenants, employees, guests, invitees and
customers of Tenants must conform to these Parking Rules and Regulations.

1.    To the extent not designated to individual tenants by clearly marked
      lettering or numbers on stalls, all uncovered parking spaces are permitted
      to be used in common with all Tenant's employees, subtenants, invitees,
      guests and customers within the lot of the building which Tenant leases.
      Parking is not allowed in areas previously designated for other Tenant
      use.

2.    During the Term hereof Landlord reserves the sole right to institute
      controls of all the parking areas serving the Building and its lot
      including, but not limited to, changing the methods by which vehicles are
      parked, repainting the parking lot, allocating individual space is
      designated areas for specific license plate numbers or named persons or
      companies, and allocating visitor only parking, allocating compact car
      spaces, and issuing parking decals.

3.    Tenant's rights and privileges under these Parking Rules and Regulations
      are conditioned upon the valid existence of the Lease between Landlord and
      Tenant at the Property. Tenant's rights hereunder are also conditioned
      upon Tenant not being in default of any provision of said lease nor in
      default of the any Rules and Regulations which are incorporated therein.

4.    Tenant's rights are further subject to the parking rules and regulations
      as follows:

i. Restriction or Removal. Landlord reserves the right to restrict access to the
parking areas of the Building, or to have removed from the parking areas, at the
vehicle owner's expense, any vehicle which, in the opinion of the Landlord: (a)
represents a hazard to the health and welfare of the tenants of the Building or
the general public; (b) is not in operable condition; (c) contains explosive
cargo (other than gasoline or fuel in the original equipment vehicle tanks); (d)
is leaking fluids of any kind, including water; (e) contains illegal goods or
contraband; (f) disregards the posted speed limit signs or other posted signage;
(g) or any other vehicle normally not considered acceptable in the area of a
high quality office park. Landlord shall park only in such areas or spaces as
are authorized by Landlord. Landlord reserves the right to remove any vehicle
not authorized to park in the classification of parking area in which it is
located. Tenant shall ensure strict compliance with parking areas marked for the
handicapped.

ii. Speed and Traffic Controls. Tenant, its employees, subtenants invitees,
guests and customers shall observe all speed and traffic controls established by
Landlord from time to time.

iii. Violations. The vehicles of Tenant's who violate any of the provisions of
these Parking Rules and Regulations may be impounded and/or removed from the
parking facilities at the option of the Landlord of the lot, or easement area,
being violated at the expense of the Tenant.

iv. Changes or Additions to Parking Regulations. Landlord reserves the right to
from time to time to amend, modify, expand or change in any way these Parking
Rules and Regulations.


                                       23








5.    Landlord reserves the right to refuse access or to exclude or expel from
      said parking areas, to any individual who fails to observe any of the
      provisions of these Parking Rules and Regulations.

6.    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 parking areas, for the preservation of
      good order herein, and for the common well being of the Building's
      tenants.

7.    Tenant is allocated Eleven (11) parking stalls in the Building on an
      unreserved basis for the duration of this Lease. Tenant agrees to pay to
      Landlord the sum of $150/mo. for each stall it may use in the building
      subject to increases from time to time imposed by Landlord equally on all
      stall users in the Building. If the monthly rate is increased by Landlord
      for parking stall users in the Building, Tenant agrees to pay the
      increased rate after receiving not less than twenty (20) days prior
      written notice thereof for the next month's rate.

         -------------------                         -----------------
         Landlord's Initials                         Tenant's Initials


                                       24








                                    Exhibit D

                                Other Conditions

1.    Tenant Improvements. Tenant and Landlord agree that Landlord shall
      make improvements to the Tenant's Premises according to the space plan
      attached hereto as Exhibit B and by this reference made a part hereof
      (the "Tenant Improvements"). Landlord agrees to pay up to an allowance
      of One Hundred Seventy Five Thousand Nine Hundred Twenty Dollars and
      00/100 ($175,920.00) (the "Maximum Allowance") associated with
      Tenant's Premises (Suite 100) at its sole cost and expense related to such
      Tenant Improvements. In the event the cost of Tenant Improvements exceed
      the Maximum Allowance, Tenant hereby agrees to pay promptly when due the
      cost overage for such Tenant Improvements above the Maximum Allowance, if
      any, provided Tenant has approved such overage in writing prior to
      incurring such overage. Landlord agrees to pay the tenant improvement
      invoices as they become due with Tenant reimbursing Landlord for all
      amounts over the Maximum Allowance stated above provided Tenant has
      approved such overage in writing prior to incurring such overage. IT IS
      EXPRESSLY AGREED TO HEREIN THAT NO WORK WILL BE AUTHORIZED FOR OVER THE
      MAXIMUM ALLOWANCE WITHOUT PRIOR WRITTEN APPROVAL OF BOTH LANDLORD AND
      TENANT. Tenant Improvements shall be defined as all costs associated with
      improving the Premises, as it relates to Exhibit B, including new
      carpeting and padding (if applicable), general conditions of the
      contractor (including overhead and profit), wall installation and/or
      removal, wall preparation, painting, floor plan preparations and review,
      permits, hard surface floor covering, relites, doors, door jambs, door
      hardware, Tenant signage, sprinklers, vapor/noise barriers, smoke
      detectors, fire dampers/stops, light fixtures, code required
      modifications, electrical installation or reconfiguration, ceiling tiles
      (new or repainted), ceiling T-grids, securing tenant improvements for
      earthquake codes, installation of wood work or cabinetry, window blinds
      repair or replacement, general clean-up, and other items mutually agreed
      to by Tenant and Landlord, and any applicable sales taxes. In no event
      shall any of the Maximum Allowance allocation be utilized for furniture,
      furniture installation, demountable furniture partitions, and other moving
      costs. All of the furniture related costs are to be at the sole cost of
      Tenant and are not part of the Maximum Allowance allocation. Landlord
      shall utilize Landlord's tenant improvement contractor to perform the
      Tenant Improvement work on the Premises, except for telephone and/or
      networking cabling which shall be contracted by Tenant.

      Once the Tenant improvement work has been completed, and should the total
      cost associated with the Tenant Improvements and other items permitted
      herein, total less than the Maximum Allowance amount, any savings in the
      total cost to improve the Premises shall belong to Landlord. Tenant and
      Landlord agree that the Base Monthly Rent described in item above is based
      in part upon Landlord's obligation to pay for Tenant Improvements up to an
      amount not to exceed the Maximum Allowance specified herein. If, In the
      event, the cost to install the Tenant Improvements, to which Landlord is
      obligated to pay and which Tenant and Landlord have mutually approved to
      include in such cost, is in excess of the Maximum Allowance, Tenant shall
      pay for all such costs directly. Once the Tenant Improvements are
      substantially completed in areas where access is desired by Tenant even
      though other areas may not be substantially completed, prior to the Lease
      Commencement, Tenant may enter the space for installation of its
      fixturing, cabling or other furniture installations, to the extent such
      activities do not interfere with or delay the completion of Tenant
      Improvements directed by Landlord or it's contractors, agents, or
      employees.

2.    Space Planning Allowance. In addition to the Maximum Allowance for Tenant
      Improvements, Landlord agrees to pay a space planning allowance of One
      Thousand Six Hundred Dollars and 00/100 ($1,600.00) associated with
      Tenant's Premises (Suite 100) at its sole cost and expense. In the event
      the cost of Tenant's space planning for the Premises exceeds such
      allowance, Tenant hereby agrees to pay promptly when due the cost overage
      for such space planning above such allowance, if any, provided Tenant has
      approved such overage in writing prior to incurring such overage. Landlord
      agrees to pay the space planning invoices as they become due with Tenant
      reimbursing Landlord for all amounts over the allowance stated above
      provided Tenant has approved such overage in writing prior to incurring
      such overage.

3.    Renewal Option. To the extent Tenant is not in material default under the
      Lease at the date of its intent to exercise this option to renew the
      Lease, Tenant shall have the right to extend this Lease for two option
      periods of two years "the First Option Period") and five years (the second
      option period") after expiration of the initial term of this Lease under
      the same terms and conditions set forth in this Lease, by delivering to
      Landlord written notification of its intent to exercise such option to
      extend not later than 180 days prior to the initial Lease term expiring,
      except, the monthly base rent shall be at market rate (equal to the
      then-current fair market rate for comparable office space in the Denny
      Regrade/Queen Anne business district) as negotiated between Tenant and
      Landlord which both agree to be reasonable in such negations. Upon receipt
      by Landlord of written


                                       25








      notification by Tenant that it extends to exercise its option to new its
      tenancy, Landlord shall have 15 days to respond back to Landlord its
      acceptance thereof or counter offer. Each party will then have three
      business days in which to respond to the other's counter-proposals, if
      required. If, in the event, that a market rate cannot be negotiated
      between Tenant and Landlord within the proposals and counter proposals,
      which shall not exceed three (3) in total (three written proposals or
      counter-proposals from each side), then the market rate shall be
      determined as follows: (i) within 14 days after expiration of the
      proposal/counter-proposal procedure discussed above, the parties shall
      mutually agree on an appraiser who shall determine the fair market rate
      for the Premises in accordance with this paragraph. If the parties are
      unable to agree on an appraiser, then each party shall select an
      appraiser. The two appraisers shall then select a third appraiser who
      shall determine the fair market rate in accordance with this paragraph.
      All appraisers selected shall be M.A.I. appraisers with commercial
      property experience in King County, Washington. Any dispute regarding the
      market rate shall not affect Tenant's right to renew this Lease. In the
      event of such dispute, during the term of the Lease renewal, the basic
      rate shall remain unchanged until such decision is rendered by the
      appraiser, upon which time the rent shall be adjusted retroactively to the
      beginning of the renewal period. If, in the event, Tenant assigns
      (excluding any permitted subleases) its interest in this Lease at any time
      prior the commencement of the renewal period, or in case of material
      default of this Lease by Tenant that remains uncured as of the date of
      Tenant's intent to exercise this option to renew the Lease, this option
      becomes null and void.

4.    Early Termination by Tenant. Tenant shall have a one time right to
      terminate the lease at the end of the 36th month of the lease term by
      paying to Landlord a penalty fee in the amount of $100,000.00. Tenant must
      provide to Landlord, the payment in advance six (6) months written notice
      to terminate not later than 180 days prior to the end of the 36th month or
      the right to terminate the Lease shall lapse.

           -------------------                       -----------------
           Landlord's Initials                       Tenant's Initials


                                    Exhibit E

                        Application of Operating Expenses

                                     NOTARY

STATE OF WASHINGTON                                  )
                                                     ) SS.
COUNTY OF KING                                       )


On this ___ day of _______________, 2000, before me, a Notary Public in and for
the State of Washington, personally appeared Richard J. Burrell, to me known to
be the Vice President, respectively, of ASA Properties, Inc., the corporation
that executed the within and foregoing instrument, and acknowledged said
Instrument to be the free and voluntary act and deed of said corporation, for
the uses and purposes therein mentioned.

- -----------------------------------------

Notary Public in and for the State of Washington, residing in County of King.
Commission Expiration: __________________________



STATE OF WASHINGTON                                  )
                                                     ) SS.
COUNTY OF KING                                       )

On this ___ day of _________________, 2000, before me, a Notary Public in and
for the State of Washington, personally appeared Bruce R. York, to me known to
be the Chief Financial Officer, respectively, of Cellular Technical Services
Company, Inc., the corporation that executed the within and


                                       26








foregoing instrument, and acknowledged said Instrument to be the free and
voluntary act and deed of said corporation, for the uses and purposes therein
mentioned.

- -----------------------------------------

Notary Public in and for the State of ___________________________, residing in
County of ___________________ Commission Expiration: __________________________



                                       27









                             AMENDMENT #1 TO LEASE

This Lease Amendment #1 to Lease shall serve to modify and change that Lease
dated July 11, 2000, (hereinafter referred to as the "Lease"), by and between
BayVista Office Investors, LLC, a Delaware Limited Liability Company, a Delaware
Limited liability company with ASA Properties, Inc., as its Managing Member
("Landlord"), and Cellular Technical Services Company, Inc., a Delaware
corporation ("Tenant"), for space leased as Suite 100, for approximately 11,728
rentable square feet, at BayVista Office Building, 2815 Second Avenue, Seattle,
Washington.

NOW, THEREFORE, the parties agree to the following modifications to the Lease:

1.    The Basic Lease Information page and section 2 of the Lease shall be
      modified to reflect a 13% load factor added to 9,987 usable square feet
      for the premises to bring the total rentable square feet to 11,285 not
      11,728 rentable square feet as previously stated therein. Tenant's
      percentage share of the Building shall now be 9.81% and not 10.19% as
      stipulated in section 2 of the Lease.

2.    The Lease shall now commence October 1, 2000, and the Lease shall expire
      on September 30, 2003;

3.    The base monthly rent shall be changed from that stated on the Basic Lease
      Information page of the Lease to that which is stipulated below:



                                         Monthly Base Rent
                                         Usable S.F.       13% Load        Total Base
                                         (9,987 usf)      (1,298 rsf)       Monthly Rent
                                         -----------------------------------------------
                                                                  
      Oct. 1, 2000-Sept. 30, 2000        16,645.00         2,163.33        $18,808.33
      Oct. 1, 2002-Sept. 30, 2002        17,477.25         2,271.50        $19,748.75
      Oct. 1, 2003-Sept. 30, 2003        18,309.50         2,379.67        $20,689.17



4.    Tenant Improvements: The Maximum Allowance amount specified on Exhibit "D"
      item #1 in the Lease shall be changed from $175,920.00 to $195,920.00.

Except as herein provided, the subject Lease has not been amended and remains in
full force and effect.

Agreed to and accepted this ______ day of ____________________, 2000.



LANDLORD:                                   TENANT:
                                         
BayVista Office Investors, LLC,             Cellular Technical Services Company, Inc.,
a Delaware Limited Liability Company        a Delaware corporation
ASA properties, Inc.,
a Washington corporation
Its: Managing Member

By: _____________________________           By: __________________________

Its: ____________________________           Its:  ________________________