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                   AMERICAN INDUSTRIAL REAL ESTATE ASSOCIATION


           STANDARD INDUSTRIAL/COMMERCIAL SINGLE-TENANT LEASE -- GROSS
                (DO NOT USE THIS FORM FOR MULTI-TENANT BUILDINGS)


1.      BASIC PROVISIONS ("BASIC PROVISIONS").

        1.1     PARTIES: This Lease ("LEASE"), dated for reference purposes only
MAY 28TH, 1998, is made by and between ROBERT B. REINGOLD, TRUSTEE FOR REINGOLD
TRUST #21328 ("LESSOR") and ACCELERATED NETWORKS INC., a California Corporation
("LESSEE"), (collectively the "PARTIES," or individually a "PARTY").

        1.2     PREMISES: That certain real property, including all improvements
therein or to be provided by Lessor under the terms of this Lease, and commonly
known as 301 SCIENCE DRIVE, MOORPARK, located in the County of VENTURA, State of
CALIFORNIA, and generally described as (describe briefly the nature of the
property and, if applicable, the "PROJECT," if the property is located within a
Project) AN APPROXIMATE 23,040 SQUARE FOOT, TWO-STORY CONCRETE TILT-UP BUILDING
LOCATED ON APPROXIMATELY 1.26 ACRES OF M-1 ZONED LAND. (APN 512-0-240-105)
COLLECTIVELY THE ENTIRE BUILDING AND PARCEL INCLUDING THE PARKING LOT
("Premises"). (See also Paragraph 2.)

        1.3     TERM: THREE (3) years and 0 months ("ORIGINAL TERM") commencing
AUGUST 1, 1998 ("COMMENCEMENT DATE") and ending JULY 31, 2001 ("EXPIRATION
DATE"). (See also Paragraph 3.)

        1.4     EARLY POSSESSION: UPON LEASE EXECUTION OF LEASES. (SEE PAR. 50)
("EARLY POSSESSION DATE"). (See also Paragraphs 3.2 and 3.3)

        1.5     BASE RENT: $20,536.00 per month ("BASE RENT"), payable on the
FIRST (1st) day of each month commencing AUGUST 1, 1998. (See also Paragraph 4.)
1/2 If this box is checked, there are provisions in this Lease for the Base Rent
to be adjusted and/or for common area maintenance charges.

        1.6     BASE RENT PAID UPON EXECUTION: $20,536.00 as Base Rent for the
period AUGUST 1998.

        1.7     SECURITY DEPOSIT: $61,608.00 ("SECURITY DEPOSIT"). (See also
Paragraph 5 and 52).

        1.8     AGREED USE: GENERAL OFFICE, ASSEMBLY AND WAREHOUSING OF
ELECTRIC/ELECTRONIC COMPONENTS AND EQUIPMENT (See also Paragraph 6.)

        1.9     INSURING PARTY: Lessor is the "INSURING PARTY." The annual "Base
Premium" is $____________. (See also Paragraph 8.)

        1.10    REAL ESTATE BROKERS: (See also Paragraph 15)

               (a) REPRESENTATION: The following real estate brokers
(collectively, the "Brokers") and brokerage relationships exist in this
transaction (check applicable boxes):

[X] EQUITY COMMERCIAL REAL ESTATE SERVICES represents Lessor exclusively
("LESSOR'S BROKer");

[X] METROSPACE/CRESA represents Lessee exclusively ("LESSEE'S BROKer"); oR

[ ] N/A represents both Lessor and Lessee ("DUAL AGENcy").

               (b) PAYMENT TO BROKERS: Upon execution and delivery of this Lease
by both Parties, Lessor shall pay to the Broker the fee agreed to in their
separate written agreement (or if there is no such agreement, the sum of SEE
BELOW % of the total Base Rent for the brokerage services rendered by said
Broker). (as per separate agreement between Lessor and Equity Commercial)

        1.11    GUARANTOR: The obligations of the Lessee under this Lease are to
be guaranteed by N/A ("GUARANTOR"). (See also Paragraph 37.)

        1.12    ADDENDA AND EXHIBITS. Attached hereto is an Addendum or Addenda
consisting of Paragraphs 51 through 64, and Exhibits A , all of which constitute
a part of this Lease.

2.      PREMISES.

        2.1     LETTING. Lessor hereby leases to Lessee, and Lessee hereby
leases from Lessor, the Premises, for the term, at the rental, and upon all of
the terms, covenants and conditions set forth in this Lease. Unless otherwise
provided herein, any statement of size set forth in this Lease, or that may have
been used in calculating rental, is an approximation which the Parties agree is
reasonable and the rental based thereon is not subject to revision whether or
not the actual size is more or less.

        2.2     CONDITION. Lessor shall deliver the Premises broom clean and
free of debris and clean the windows by the Commencement Date ("START DATE"),
and warrants that the existing electrical, plumbing, fire sprinkler, lighting,
heating, ventilating and air conditioning systems ("HVAC"), loading doors, if
any, and all other such elements of the building, in the Premises, other than
those constructed by Lessee, shall be in good operating condition on said date
and that the surface and structural elements of


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the roof, bearing walls and foundation of any buildings on the Premises (the
"BUILDING") shall be free of material defects. If a non-compliance with said
warranty exists as of the Start Date, Lessor shall, except as otherwise provided
in this Lease, promptly after receipt of written notice from Lessee setting
forth with specificity the nature and extent of such non-compliance, rectify
same at Lessor's expense. If, after the Start Date, Lessee does not give Lessor
written notice of any non-compliance with this warranty within (i) six (6)
months as to the HVAC systems or (ii) thirty (30) days as to the remaining
systems and other elements of the Building, correction of such non-compliance
shall be the obligation of Lessee at Lessee's sole cost and expense, except for
the roof, foundations, and bearing walls which are handled as provided in
Paragraph 7.

        2.3     COMPLIANCE. Lessor warrants that any improvements on the
Premises comply with all applicable laws, covenants or restrictions of record,
building codes, regulations and ordinances ("APPLICABLE REQUIREMENTS") in effect
on the Start Date. Said warranty does not apply to the use to which Lessee will
put the Premises or to any Alterations or Utility Installations (as defined in
Paragraph 7.3(a)) made or to be made by Lessee. NOTE: Lessee is responsible for
determining whether or not the zoning is appropriate for Lessee's intended use,
and acknowledges that past uses of the Premises may no longer be allowed. If the
Premises do not comply with said warranty, Lessor shall, except as otherwise
provided, promptly after receipt of written notice from Lessee setting forth
with specificity the nature and extent of such non-compliance, rectify the same
at Lessor's expense. If Lessee does not give Lessor written notice of a
non-compliance with this warranty within six (6) months following the Start
Date, correction of that non-compliance shall be the obligation of Lessee at
Lessee's sole cost and expense. If the Applicable Requirements are hereafter
changed (as opposed to being in existence at the Start Date, which is addressed
in Paragraph 6.2(e) below) so as to require during the term of this Lease the
construction of an addition to or alteration of the Building, the remediation of
any Hazardous Substance, or the reinforcement or other physical modification of
the Building ("CAPITAL EXPENDITURE"), Lessor and Lessee shall allocate the cost
of such work as follows:

               (a) Subject to Paragraph 2.3(c) below, if such Capital
Expenditures are required as a result of the specific and unique use of the
Premises by Lessee as compared with uses by tenants in general, Lessee shall be
fully responsible for the cost thereof, provided, however that if such Capital
Expenditure is required during the last two (2) years of this Lease and the cost
thereof exceeds six (6) months' Base Rent, Lessee may instead terminate this
Lease unless Lessor notifies Lessee, in writing, within ten (10) days after
receipt of Lessee's termination notice that Lessor has elected to pay the
difference between the actual cost thereof and the amount equal to six (6)
months' Base Rent. lf Lessee elects termination, Lessee shall immediately cease
the use of the Premises which requires such Capital Expenditure and deliver to
Lessor written notice specifying a termination date at least ninety (90) days
thereafter. Such termination date shall, however, in no event be earlier than
the last day that Lessee could legally utilize the Premises without commencing
such Capital Expenditure.

               (b) If such Capital Expenditure is not the result of the specific
and unique use of the Premises by Lessee (such as, governmentally mandated
seismic modifications), then Lessor and Lessee shall allocate the obligation to
pay for such costs pursuant to the provisions of Paragraph 7.1(c); provided,
however, that if such Capital Expenditure is required during the last two years
of this Lease or if Lessor reasonably determines that it is not economically
feasible to pay its share thereof, Lessor shall have the option to terminate
this Lease upon ninety (90) days prior written notice to Lessee unless Lessee
notifies Lessor, in writing, within ten (10) days after receipt of Lessor's
termination notice that Lessee will pay for such Capital Expenditure. If Lessor
does not elect to terminate, and fails to tender its share of any such Capital
Expenditure, Lessee may advance such funds and deduct same, with interest, from
Rent until Lessor's share of such costs have been fully paid. If Lessee is
unable to finance Lessor's share, of if the balance of the Rent due and payable
for the remainder of this Lease is not sufficient to fully reimburse Lessee on
an offset basis, Lessee shall have the right to terminate this Lease upon thirty
(30) days written notice to Lessor.

               (c) Notwithstanding the above, the provisions concerning Capital
Expenditures are intended to apply only to non-voluntary, unexpected, and new
Applicable Requirements. If the Capital Expenditures are instead triggered by
Lessee as a result of an actual or proposed change in use, change in intensity
of use, or modification to the Premises then, and in that event, Lessee shall be
fully responsible for the cost thereof, and Lessee shall not have any right to
terminate this Lease.

        2.4     ACKNOWLEDGMENTS. Lessee acknowledges that: (a) it has been
advised by Lessor and/or Brokers to satisfy itself with respect to the condition
of the Premises (including, but not limited to the electrical, HVAC and fire
sprinkler systems, security, environmental aspects, and compliance with the
Applicable Requirements), and their suitability for Lessee's intended use; (b)
Lessee has made such investigation as it deems necessary with reference to such
matters and assumes all responsibility therefor as the same relate to its
occupancy of the Premises; and (c) neither Lessor, Lessor's agents, nor any
Broker has made any oral or written representations or warranties with respect
to said matters other than as set forth in this Lease. In addition, Lessor
acknowledges that: (a) Broker has made no representations, promises or
warranties concerning Lessee's ability to honor the Lease or suitability to
occupy the Premises; and (b) it is Lessor's sole responsibility to investigate
the financial capability and/or suitability of all proposed tenants.

        2.5     LESSEE AS PRIOR OWNER/OCCUPANT. The warranties made by Lessor in
Paragraph 2 shall be of no force or effect if immediately prior to the Start
Date Lessee was the owner or occupant of the Premises. In such event, Lessee
shall be responsible for any necessary corrective work.


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3.      TERM.

        3.1     TERM. The Commencement Date, Expiration Date and Original Term
of this Lease are as specified in Paragraph 1.3.

        3.2     EARLY POSSESSION. If Lessee totally or partially occupies the
Premises prior to the Commencement Date, the obligation to pay Base Rent shall
be abated for the period of such early possession. All other terms of this Lease
shall, however, be in effect during such period. Any such early possession shall
not affect the Expiration Date.

        3.3     DELAY IN POSSESSION. Lessor agrees to use its best commercially
reasonable efforts to deliver possession of the Premises to Lessee by the
Commencement Date. If, despite said efforts, Lessor is unable to deliver
possession as agreed, Lessor shall not be subject to any liability therefor, nor
shall such failure affect the validity of this Lease. Lessee shall not, however,
be obligated to pay Rent or perform its other obligations until it receives
possession of the Premises. If possession is not delivered within sixty (60)
days after the Commencement Date, Lessee may, at its option, by notice in
writing to Lessor within ten (10) days after the end of said sixty (60)-day
period, cancel this Lease, in which event the Parties shall be discharged from
all obligations hereunder. If such written notice is not received by Lessor
within said ten (10)-day period, Lessee's right to cancel shall terminate.
Except as otherwise provided, if possession is not tendered to Lessee by the
Start Date and Lessee does not terminate this Lease, as aforesaid, any period of
rent abatement that Lessee would otherwise have enjoyed shall run from the date
of delivery of possession and continue for a period equal to what Lessee would
otherwise have enjoyed under the terms hereof, but minus any days of delay
caused by the acts or omissions of Lessee. If possession of the Premises is not
delivered within four (4) months after the Commencement Date, this Lease shall
terminate unless other agreements are reached between Lessor and Lessee, in
writing.

               (a) LESSEE COMPLIANCE. Lessor shall not be required to tender
possession of the Premises to Lessee until Lessee complies with its obligation
to provide evidence of insurance (Paragraph 8.5). Pending delivery of such
evidence, Lessee shall be required to perform all of its obligations under this
Lease from and after the Start Date, including the payment of Rent,
notwithstanding Lessor's election to withhold possession pending receipt of such
evidence of insurance. Further, if Lessee is required to perform any other
conditions prior to or concurrent with the Start Date, the Start Date shall
occur but Lessor may elect to withhold possession until such conditions are
satisfied.

4.      RENT.

        4.1     RENT DEFINED. All monetary obligations of Lessee to Lessor under
the terms of this Lease (except for the Security Deposit) are deemed to be rent
("RENT").

        4.2     PAYMENT. Lessee shall cause payment of Rent to be received by
Lessor in lawful money of the United States, without offset or deduction (except
as specifically permitted in this Lease), on or before the day on which it is
due. Rent for any period during the term-hereof which is for less than one (1)
full calendar month shall be prorated based upon the actual number of days of
said month. Payment of Rent shall be made to Lessor at its address stated herein
or to such other persons or place as Lessor may from time to time designate in
writing. Acceptance of a payment which is less than the amount then due shall
not be a waiver of Lessor's rights to the balance of such Rent, regardless of
Lessor's endorsement of any check so stating.

        5. Security Deposit. Lessee shall deposit with Lessor upon execution
hereof the Security Deposit as security for Lessee's faithful performance of its
obligations under this Lease. If Lessee fails to pay Rent, or otherwise Defaults
under this Lease, Lessor may use, apply or retain all or any portion of said
Security Deposit for the payment of any amount due Lessor or to reimburse or
compensate Lessor for any liability, expense, loss or damage which Lessor may
suffer or incur by reason thereof. If Lessor uses or applies all or any portion
of said Security Deposit, Lessee shall within ten (10) days after written
request therefor deposit monies with Lessor sufficient to restore said Security
Deposit to the full amount required by this Lease. Should the Agreed Use be
amended to accommodate a material change in the business of Lessee or to
accommodate a sublessee or assignee, Lessor shall have the right to increase the
Security Deposit to the extent necessary, in Lessor's reasonable judgment, to
account for any increased wear and tear that the Premises may suffer as a result
thereof. Lessor shall not be required to keep the Security Deposit separate from
its general accounts. Within fourteen (14) days after the expiration or
termination of this Lease, if Lessor elects to apply the Security Deposit only
to unpaid Rent, and otherwise within thirty (30) days after the Premises have
been vacated pursuant to Paragraph 7.4(c) below, Lessor shall return that
portion of the Security Deposit not used or applied by Lessor. No part of the
Security Deposit shall be considered to be held in trust, to bear interest or to
be prepayment for any monies to be paid by Lessee under this Lease.

6.      USE.

        6.1     USE. Lessee shall use and occupy the Premises only for the
Agreed Use, or any other legal use which is reasonably comparable thereto, and
for no other purpose. Lessee shall not use or permit the use of the Premises in
a manner that is unlawful, creates damage, waste or a nuisance, or that disturbs
owners and/or occupants of, or causes damage to neighboring properties. Lessor
shall not unreasonably withhold or delay its consent to any written request for
a modification of the Agreed Use, so long as the same will not impair the
structural integrity of the improvements on the Premises or the mechanical or
electrical systems therein, or is not significantly more burdensome to the
Premises. If


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Lessor elects to withhold consent, Lessor shall within five (5) business days
after such request give written notification of same, which notice shall include
an explanation of Lessor's objections to the change in use.

        6.2     HAZARDOUS SUBSTANCES.

               (a) REPORTABLE USES REQUIRE CONSENT. The term "HAZARDOUS
SUBSTANCE" as used in this Lease shall mean any product, substance, or waste
whose presence, use, manufacture, disposal, transportation, or release, either
by itself or in combination with other materials expected to be on the Premises,
is either: (i) potentially injurious to the public health, safety or welfare,
the environment or the Premises, (ii) regulated or monitored by any governmental
authority, or (iii) a basis for potential liability of Lessor to any
governmental agency or third party under any applicable statute or common law
theory. Hazardous Substances shall include, but not be limited to, hydrocarbons,
petroleum, gasoline, and/or crude oil or any products, by-products or fractions
thereof. Lessee shall not engage in any activity in or on the Premises which
constitutes a Reportable Use of Hazardous Substances without the express prior
written consent of Lessor and timely compliance (at Lessee's expense) with all
Applicable Requirements. "REPORTABLE USE" shall mean (i) the installation or use
of any above or below ground storage tank, (ii) the generation, possession,
storage, use, transportation, or disposal of a Hazardous Substance that requires
a permit from, or with respect to which a report, notice, registration or
business plan is required to be filed with, any governmental authority, and/or
(iii) the presence at the Premises of a Hazardous Substance with respect to
which any Applicable Requirements requires that a notice be given to persons
entering or occupying the Premises or neighboring properties. Notwithstanding
the foregoing, Lessee may use any ordinary and customary materials reasonably
required to be used in the normal course of the Agreed Use, so long as such use
is in compliance with all Applicable Requirements, is not a Reportable Use, and
does not expose the Premises or neighboring property to any meaningful risk of
contamination or damage or expose Lessor to any liability therefor. In addition,
Lessor may condition its consent to any Reportable Use upon receiving such
additional assurances as Lessor reasonably deems necessary to protect itself,
the public, the Premises and/or the environment against damage, contamination,
injury and/or liability, including, but not limited to, the installation (and
removal on or before Lease expiration or termination) of protective
modifications (such as concrete encasements) and/or increasing the Security
Deposit.

               (b) DUTY TO INFORM LESSOR. If Lessee knows, or has reasonable
cause to believe DURING THE TERM OF THIS LEASE, that a Hazardous Substance has
come to be located in, on, under or about the Premises, other than as previously
consented to by Lessor, Lessee shall immediately give Lessor written notice of
such fact to Lessor, and provide Lessor with a copy of any report, notice, claim
or other documentation which it has concerning the presence of such Hazardous
Substance.

               (c) LESSEE REMEDIATION. Lessee shall not cause or permit any
Hazardous Substance to be spilled or released in, on, under, or about the
Premises (including through the plumbing or sanitary sewer system) and shall
promptly, at Lessee's expense, take all investigatory and/or remedial action
reasonably recommended, whether or not formally ordered or required, for the
cleanup of any contamination of, and for the maintenance, security and/or
monitoring of the Premises or neighboring properties, that was caused or
materially contributed to by Lessee, or pertaining to or involving any Hazardous
Substance brought onto the Premises during the term of this Lease, by or for
Lessee.

               (d) LESSEE INDEMNIFICATION. Lessee shall indemnify, defend and
hold Lessor, its agents, employees, lenders and ground lessor if any, harmless
from and against any and all loss of rents and/or damages, liabilities,
judgments, claims, expenses, penalties, and attorneys' and consultants' fees
arising out of or involving any Hazardous Substance brought onto the Premises by
or for Lessee (provided, however, that Lessee shall have no liability under this
Lease with respect to underground migration of any Hazardous Substance under the
Premises from adjacent properties or any hazardous substance which existed in
the premises prior to the start date). Lessee's obligations shall include, but
not be limited to, the effects of any contamination or injury to person,
property or the environment created or suffered by Lessee, and the cost of
investigation, removal, remediation, restoration and/or abatement, and shall
survive the expiration or termination of this Lease. NO TERMINATION,
CANCELLATION OR RELEASE AGREEMENT ENTERED INTO BY LESSOR AND LESSEE SHALL
RELEASE EITHER PARTY FROM ITS OBLIGATIONS UNDER THIS LEASE WITH RESPECT TO
HAZARDOUS SUBSTANCES, UNLESS SPECIFICALLY SO AGREED BY LESSOR IN WRITING AT THE
TIME OF SUCH AGREEMENT.

               (e) LESSOR INDEMNIFICATION. Lessor and its successors and assigns
shall indemnify, defend, reimburse and hold Lessee employees and lenders,
harmless from and against any and all environmental damages, including the cost
of remediation, which existed as a result of Hazardous Substances on the
Premises prior to the Start Date or which are caused by the gross negligence or
willful misconduct of Lessor, its agents or employees. Lessor's obligations, as
and when required by the Applicable Requirements, shall include, but not be
limited to, the cost of investigation, removal, remediation, restoration and/or
abatement, and shall survive the expiration or termination of this Lease.

               (f) INVESTIGATIONS AND REMEDIATIONS. Lessor shall retain the
responsibility and pay for any investigations or remediation measures required
by governmental entities having jurisdiction with respect to the existence of
Hazardous Substances on the Premises prior to the Start Date, unless such
remediation measure is required as a result of Lessee's use (including
alterations) of the Premises, in which event Lessee shall be responsible for
such payment. Lessee shall cooperate fully in any such activities at the request
of Lessor, including allowing Lessor and Lessor's agents to have reasonable


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access to the Premises at reasonable times in order to carry out Lessor's
investigative and remedial responsibilities.

               (g) LESSOR TERMINATION OPTION. If a Hazardous Substance Condition
occurs during the term of this Lease, unless Lessee is legally responsible
therefor (in which case Lessee shall make the investigation and remediation
thereof required by the Applicable Requirements and this Lease shall continue in
full force and effect, but subject to Lessor's rights under Paragraph 6.2(d) and
Paragraph 13), Lessor may, at Lessor's option, either (i) investigate and
remediate such Hazardous Substance Condition, if required, as soon as reasonably
possible at Lessor's expense, in which event this Lease shall continue in full
force and effect, or (ii) if the estimated cost to remediate such condition
exceeds twelve (12) times the then monthly Base Rent or $100,000, whichever is
greater, give written notice to Lessee, within thirty (30) days after receipt by
Lessor of knowledge of the occurrence of such Hazardous Substance Condition, of
Lessor's desire to terminate this Lease as of the date sixty (60) days following
the date of such notice. In the event Lessor elects to give a termination
notice, Lessee may, within ten (10) days thereafter, give written notice to
Lessor of Lessee's commitment to pay the amount by which the cost of the
remediation of such Hazardous Substance Condition exceeds an amount equal to
twelve (12) times the then monthly Base Rent or $100,000, whichever is greater.
Lessee shall provide Lessor with said funds or satisfactory assurance thereof
within thirty (30) days following such commitment. In such event, this Lease
shall continue in full force and effect, and Lessor shall proceed to make such
remediation as soon as reasonably possible after the required funds are
available. If Lessee does not give such notice and provide the required funds or
assurance thereof within the time provided, this Lease shall terminate as of the
date specified in Lessor's notice of termination.

        6.3     LESSEE'S COMPLIANCE WITH APPLICABLE REQUIREMENTS. Except as
otherwise provided in this Lease, Lessee shall, at Lessee's sole expense, fully,
diligently and in a timely manner, materially comply with all Applicable
Requirements, the requirements of any applicable fire insurance underwriter or
rating bureau, and the recommendations of Lessor's engineers and/or consultants
which relate in any manner to the Premises, without regard to whether said
requirements are now in effect or become effective after the Start Date. Lessee
shall, within ten (10) days after receipt of Lessor's written request, provide
Lessor with copies of all permits and other documents, and other information
evidencing lessee's compliance with any Applicable Requirements specified by
Lessor, and shall immediately upon receipt, notify Lessor in writing (with
copies of any documents involved) of any threatened or actual claim, notice,
citation, warning, complaint or report pertaining to or involving the failure of
Lessee or the Premises to comply with any Applicable Requirements.

        6.4     INSPECTION; COMPLIANCE. Lessor and Lessor's "Lender" (as defined
in Paragraph 30 below) and consultants shall have the right to enter into
Premises at any time, in the case of an emergency, and otherwise at reasonable
times, with 24 hours prior written notice to Lessee, for the purpose of
inspecting the condition of the Premises and for verifying compliance by Lessee
with this Lease. The cost of any such inspections shall be paid by the Lessor,
unless a violation of Applicable Requirements, or a contamination is found to
exist or to be imminent, or the inspection is requested or ordered by a
governmental authority. In such case, Lessee shall upon request reimburse Lessor
for the cost of such inspections, so long as such inspection is reasonably
related to the violation or contamination.

7.      MAINTENANCE, REPAIRS, UTILITY INSTALLATIONS, TRADE FIXTURES AND
        ALTERATIONS.

        7.1     LESSEE'S OBLIGATIONS.

               (a) IN GENERAL. Subject to the provisions of Paragraphs 2.2
(Condition), 2.3 (Compliance with Covenants, Restrictions and Building Code),
6.3 (Lessee's Compliance with Applicable Requirements), 7.2 (Lessor's
Obligations), 9 (Damage and Destruction), and 14 (Condemnation), Lessee shall,
at Lessee's sole expense, keep the Premises, Utility Installations, and
Alterations in good order, condition and repair (whether or not the portion of
the Premises requiring repairs, or the means of repairing the same, are
reasonably or readily accessible to Lessee, and whether or not the need for such
repairs occurs as a result of Lessee's use, any prior use, the elements or the
age of such portion of the Premises), including, but not limited to, all
equipment or facilities, such as plumbing, heating, ventilating,
air-conditioning, electrical, lighting facilities, boilers, pressure vessels,
fire protection system, fixtures, walls (interior and exterior), ceilings,
floors, windows, doors, skylights, landscaping, driveways, parking lots, fences,
signs, sidewalks and parkways located in, on, or adjacent to the Premises.
Lessee is also responsible for keeping the roof and roof drainage clean and free
of debris. Lessor shall keep the surface and structural elements of the roof,
foundations, and bearing walls in good repair (see Paragraph 7.2). Lessee, in
keeping the Premises in good order, condition and repair, shall exercise and
perform good maintenance practices. Lessee's obligations shall include
restorations, replacements or renewals when necessary to keep the Premises and
all improvements thereon or a part thereof in good order, condition and state of
repair. Lessee shall, during the term of this Lease, keep the exterior
appearance of the Building in a first-class condition (including, e.g., graffiti
removal) consistent with the exterior appearance of other similar facilities of
comparable age and size in the vicinity. Lessee shall be responsible for
Lessee's damage to exterior paint during the term.

               (b) SERVICE CONTRACTS. Lessee shall, at Lessee's sole expense,
procure and maintain contracts, with copies to Lessor, in customary form and
substance for, and with contractors specializing and experienced in the
maintenance of the following; (i) trash and janitorial service, (ii) any
equipment or system installed by Lessee for Lessee's own use, (iii) fire
extinguishing systems, including fire, alarm and/or smoke detection and (iv) the
elevator.


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        7.2     LESSOR'S OBLIGATIONS. Subject to the provisions of Paragraphs
2.2 (Condition), 2.3 (Compliance with Covenants, Restrictions and Building
Code), 9 (Damage or Destruction) and 14 (Condemnation), it is intended by the
Parties hereto that Lessor have no obligation, in any manner whatsoever, to
repair and maintain the Premises, or the equipment therein, (except as provided
in paragraphs 54, 55 and 57) all of which obligations are intended to be that of
the Lessee, except for the surface and structural elements of the roof,
foundations and bearing walls, the repair of which shall be the responsibility
of Lessor upon receipt of written notice that such a repair is necessary. It is
the intention of the Parties that the terms of this Lease govern the respective
obligations of the Parties as to maintenance and repair of the Premises, and
they expressly waive the benefit of any statute now or hereafter in effect to
the extent it is inconsistent with the terms of this Lease.

        7.3     UTILITY INSTALLATIONS, TRADE FIXTURES, ALTERATIONS.

               (a) DEFINITIONS; CONSENT REQUIRED. The term "UTILITY
INSTALLATIONS" refers to all floor and window coverings, air lines, power
panels, electrical distribution, security and fire protection systems and signs,
communication systems, lighting fixtures, HVAC equipment, plumbing, and fencing
in or on the Premises. The term "TRADE FIXTURES" shall mean Lessee's machinery
and equipment that can be removed without doing material damage to the Premises.
The term "ALTERATIONS" shall mean any modification of the improvements, other
than Utility Installations or Trade Fixtures, whether by addition or deletion.
"LESSEE OWNED ALTERATIONS AND/OR UTILITY INSTALLATIONS" are defined as
Alterations and/or Utility Installations made by Lessee that are not yet owned
by Lessor pursuant to Paragraph 7.4(a). Lessee shall not make any Alterations or
Utility Installations to the Premises without Lessor's prior written consent.
Lessee may, however, make non-structural Utility Installations to the interior
of the Premises (excluding the roof) without such consent but upon notice to
Lessor, as long as they are not visible from the outside, do not involve
puncturing, relocating or removing the roof or any existing walls, and the
cumulative cost thereof during this Lease as extended does not exceed $50,000 in
the aggregate or $10,000 in any one year.

               (b) CONSENT. Any Alterations or Utility Installations that Lessee
shall desire to make and which require the consent of the Lessor shall be
presented to Lessor in written form with detailed plans. Consent shall be deemed
conditioned upon Lessee's: (i) acquiring all applicable governmental permits,
(ii) furnishing Lessor with copies of both the permits and the plans and
specifications prior to commencement of the work, and (iii) compliance with all
conditions of said permits and other Applicable Requirements in a prompt and
expeditious manner. Any Alterations or Utility Installations shall be performed
in a workmanlike manner with good and sufficient materials. Lessee shall
promptly upon completion furnish Lessor with as-built plans and specifications.
For work which costs an amount equal. to the greater of one month's Base Rent,
or $10,000, Lessor may condition its consent upon Lessee providing a lien and
completion bond in an amount equal to one and one-half times the estimated cost
of such Alternation or Utility Installation and/or upon Lessee's posting an
additional Security Deposit with Lessor. Lessor's content under this paragraph
shall not be unreasonably withheld.

               (c) INDEMNIFICATION. Lessee shall pay, when due, all claims for
labor or materials furnished or alleged to have been furnished to or for Lessee
at or for use on the Premises, which claims are or may be secured by any
mechanic's or materialmen's lien against the Premises or any interest therein.
Lessee shall give Lessor not less than ten (10) days' notice prior to the
commencement of any work in, on or about the Premises, and Lessor shall have the
right to post notices of non -responsibility. If Lessee shall contest the
validity of any such lien, claim or demand, then Lessee shall, at its sole
expense defend and protect itself, Lessor and the Premises against the same and
shall pay and satisfy any such adverse judgment that may be rendered thereon
before the enforcement thereof. If Lessor shall require, Lessee shall furnish a
surety bond in an amount equal to one and one-half times the amount of such
contested lien, claim or demand, indemnifying Lessor against liability for the
same. If Lessor elects to participate in any such action, Lessee shall pay
Lessor's attorneys' fees and costs.

        7.4     OWNERSHIP, REMOVAL, SURRENDER, AND RESTORATION.

               (a) OWNERSHIP. Subject to Lessor's right to require removal or
elect ownership as hereinafter provided, all Alterations and Utility
Installations made by Lessee shall be the property of Lessee, but considered a
part of the Premises. Lessor may, at any time, elect in writing to be the owner
of all or any specified part of the Lessee Owned Alterations and Utility
Installations. Unless otherwise instructed per Paragraph 7.4(b) hereof, all
Lessee Owned Alterations and Utility Installations shall, at the expiration or
termination of this Lease, become the property of Lessor and be surrendered by
Lessee with the Premises.

               (b) REMOVAL. Lessor may require the removal at any time of all or
any part of any Lessee Owned Alterations or Utility Installations made without
the required consent.

               (c) SURRENDER/RESTORATION. Lessee shall surrender the Premises by
the Expiration Date or any earlier termination date, with all of the
improvements and surfaces thereof broom clean and free of debris, and in good
operating order, condition and state of repair, ordinary wear and tear excepted.
"Ordinary wear and tear" shall not include any damage or deterioration that
would have been prevented by good maintenance practice. Lessee shall repair any
damage occasioned by the installation, maintenance or removal of Trade Fixtures,
Lessee Owned Alterations and/or Utility Installations, furnishings, and
equipment as well as the removal of any storage tank installed by or for Lessee,
and the removal, replacement, or remediation of any soil, material or
groundwater contaminated by Lessee. Trade Fixtures shall remain the property of
Lessee and shall be removed by Lessee. The failure by


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<PAGE>   7
Lessee to timely vacate the Premises pursuant to this Paragraph 7.4(c) without
the express written consent of Lessor shall constitute a holdover under the
provisions of Paragraph 26 below. In the event Lessee is responsible for damage
to the existing wallpaper in the premises, repair of such damage shall be
limited and shall not exceed removing of said wallpaper, repairing and
repainting such wall.

8.      INSURANCE; INDEMNITY.

        8.1     PAYMENT OF PREMIUM INCREASES.

               (a) Lessee shall pay to Lessor any insurance cost increase
("INSURANCE COST INCREASE") occurring during the term of this Lease. "Insurance
Cost Increase" is defined as any increase in the actual cost of the insurance
required under Paragraph 8.2(b), 8.3(a) and 8.3(b) ("REQUIRED INSURANCE"), over
and above the Base Premium as hereinafter defined calculated on an annual basis.
"Insurance Cost Increase" shall include but not be limited to increases
resulting from the nature of Lessee's occupancy, any act or omission of Lessee,
requirements of the holder of mortgage or deed of trust covering the Premises,
increased valuation of the Premises and/or a premium rate increase. The parties
are encouraged to fill in the Base Premium in Paragraph 1.9 with a reasonable
premium for the Required Insurance based on the Agreed Use of the Premises. If
the parties fail to insert a dollar amount in Paragraph 1.9, then the Base
Premium shall be the lowest annual premium reasonably obtainable for the
Required Insurance as of the commencement of the Original Term for the Agreed
Use of the Premises. In no event, however, shall Lessee be responsible for any
portion of the increase in the premium cost attributable to liability insurance
carried by Lessor under Paragraph 8.1(b) in excess of $2,000,000 per occurrence.

               (b) Lessee shall pay any such Insurance Cost Increase to Lessor
within thirty (30) days after receipt by Lessee of a copy of the premium
statement or other reasonable evidence of the amount due. If the insurance
policies maintained hereunder cover other property besides the Premises, Lessor
shall also deliver to Lessee a statement of the amount of such Insurance Cost
Increase attributable only to the Premises showing in reasonable detail the
manner in which such amount was computed. Premiums for policy periods commencing
prior to, or extending beyond the term of this Lease, shall be prorated to
correspond to the term of this Lease.

        8.2     LIABILITY INSURANCE.

               (a) CARRIED BY LESSEE. Lessee shall obtain and keep in force a
Commercial General Liability Policy of Insurance protecting Lessee and Lessor
against claims for bodily injury, personal injury and property damage based upon
or arising out of the ownership, use, occupancy or maintenance of the Premises
and all areas appurtenant thereto. Such insurance shall be on an occurrence
basis providing single limit coverage in an amount not less than $2,000,000 per
occurrence with an "ADDITIONAL INSURED-MANAGERS OR LESSORS OF PREMISES
ENDORSEMENT" and contain the "AMENDMENT OF THE POLLUTION EXCLUSION ENDORSEMENT"
for damage caused by heat, smoke or fumes from a hostile fire. The Policy shall
not contain any intra-insured exclusions as between insured persons or
organizations, but shall include coverage for liability assumed under this Lease
as an "insured contract" for the performance of Lessee's indemnity obligations
under this Lease. The limits of said insurance shall not, however, limit the
liability of Lessee nor relieve Lessee of any obligation hereunder. All
insurance carried by Lessee shall be primary to and not contributory with any
similar insurance carried by Lessor, whose insurance shall be considered excess
insurance only.

               (b) CARRIED BY LESSOR. Lessor shall maintain liability insurance
as described in Paragraph 8.2(a), in addition to, and not in lieu of, the
insurance required to be maintained by Lessee. Lessee shall not be named as an
additional insured therein.

        8.3     PROPERTY INSURANCE - BUILDING, IMPROVEMENTS AND RENTAL VALUE.

               (a) BUILDING AND IMPROVEMENTS. The Insuring Party shall obtain
and keep in force a policy or policies in the name of Lessor, with loss payable
to Lessor, any groundlessor, and to any Lender(s) insuring loss or damage to the
Premises. The amount of such insurance shall be equal to the full replacement
cost of the Premises, as the same shall exist from time to time, or the amount
required by any Lenders, but in no event more than the commercially reasonable
and available insurable value thereof. If Lessor is the Insuring Party, however,
Lessee Owned Alterations and Utility Installations, Trade Fixtures, and Lessee's
personal property shall be insured by Lessee under Paragraph 8.4 rather than by
Lessor. If the coverage is available and commercially appropriate, such policy
or policies shall insure against all risks of direct physical loss or damage
(except the perils of flood and/or earthquake unless required by a Lender or
included in the Base Premium), including coverage for debris removal and the
enforcement of any Applicable Requirements requiring the upgrading, demolition,
reconstruction or replacement of any portion of the Premises as the result of a
covered loss. Said policy or policies shall also contain an agreed valuation
provision in lieu of any coinsurance clause, waiver of subrogation, and
inflation guard protection causing an increase in the annual property insurance
coverage amount by a factor of not less than the adjusted U.S. Department of
Labor Consumer Price Index for All Urban Consumers for the city nearest to where
the Premises are located.

               (b) RENTAL VALUE. The Insuring Party shall obtain and keep in
force a policy or policies in the name of Lessor, with loss payable to Lessor
and any Lender, insuring the loss of the full Rent for one (1) year. Said
insurance shall provide that in the event the Lease is terminated by reason of
an insured loss, the period of indemnity for such coverage shall be extended
beyond the date of the completion of repairs or replacement of the Premises, to
provide for one full year's loss of Rent from the


                                     PAGE 7


<PAGE>   8
date of any such loss. Said insurance shall contain an agreed valuation
provision in lieu of any coinsurance clause, and the amount of coverage shall be
adjusted annually to reflect the projected Rent otherwise payable by Lessee, for
the next twelve (12)-month period.

               (c) ADJACENT PREMISES. If the Premises are part of a larger
building, or of a group of buildings owned by Lessor which are adjacent to the
Premises, the Lessee shall pay for any increase in the premiums for the property
insurance of such building or buildings if said increase is caused by Lessee's
acts, omissions, use or occupancy of the Premises.

        8.4     LESSEE'S PROPERTY/BUSINESS INTERRUPTION INSURANCE.

               (a) PROPERTY DAMAGE. Lessee shall obtain and maintain insurance
coverage on all of Lessee's personal property, Trade Fixtures, and Lessee Owned
Alterations and Utility Installations. Such insurance shall be full replacement
cost coverage with a deductible of not to exceed $1,000 per occurrence. The
proceeds from any such insurance shall be used by Lessee for the replacement of
personal property, Trade Fixtures and Lessee Owned Alterations and Utility
Installations. Lessee shall provide Lessor with written evidence that such
insurance is in force.

               (b) BUSINESS INTERRUPTION. Lessee shall obtain and maintain loss
of income and extra expense insurance in amounts as will reimburse Lessee for
direct or indirect loss of earnings attributable to all perils commonly insured
against by prudent lessees in the business of Lessee or attributable to
prevention of access to the Premises as a result of such perils.

               (c) NO REPRESENTATION OF ADEQUATE COVERAGE. Lessor makes no
representation that the limits or forms of coverage of insurance specified
herein are adequate to cover Lessee's property, business operations or
obligations under this Lease.

        8.5     INSURANCE POLICIES. Insurance required herein shall be by
companies duly licensed or admitted to transact business in the state where the
Premises are located, and maintaining during the policy term a "General
Policyholders Rating" of at least B+, V, as set forth in the most current issue
of "Best's Insurance Guide," or such other rating as may be required by a
Lender. Lessee shall not do or permit to be done anything which invalidates the
required insurance policies. Lessee shall, prior to the Start Date, deliver to
Lessor certified copies of policies of such insurance or certificates evidencing
the existence and amounts of the required insurance. No such policy shall be
cancelable or subject to modification except after thirty (30) days prior
written notice to Lessor. Lessee shall, at least thirty (30) days prior to the
expiration of such policies, furnish Lessor with evidence of renewals or
"insurance binders" evidencing renewal thereof, or Lessor may order such
insurance and charge the cost thereof to Lessee, which amount shall be payable
by Lessee to Lessor upon demand. Such policies shall be for a term of at least
one year, or the length of the remaining term of this Lease, whichever is less.
If either Party shall fail to procure and maintain the insurance required to be
carried by it, the other Party may, but shall not be required to, procure and
maintain the same.

        8.6     WAIVER OF SUBROGATION. Without affecting any other rights or
remedies, Lessee and Lessor each hereby release and relieve the other, and waive
their entire right to recover damages against the other, for loss of or damage
to its property arising out of or incident to the perils required to be insured
against herein. The effect of such releases and waivers is not limited by the
amount of insurance carried or required, or by any deductibles applicable
hereto. The Parties agree to have their respective property damage insurance
carriers waive any right to subrogation that such companies may have against
Lessor or Lessee, as the case may be, so long as the insurance is not
invalidated thereby.

        8.7     INDEMNITY. Except for Lessor's gross negligence or willful
misconduct, Lessee shall indemnify, protect, defend and hold harmless the
Premises, Lessor and its agents, Lessor's master or ground lessor, partners and
Lenders, from and against any and all claims, loss of rents and/or damages,
liens, judgments, penalties, attorneys' and consultants' fees, expenses and/or
liabilities arising out of, involving, or in connection with, the use and/or
occupancy of the Premises by Lessee. If any action or proceeding is brought
against Lessor by reason of any of the foregoing matters, Lessee shall upon
notice defend the same at Lessee's expense by counsel reasonably satisfactory to
Lessor and Lessor shall cooperate with Lessee in such defense. Lessor need not
have first paid any such claim in order to be defended or indemnified.

        8.8     EXEMPTION OF LESSOR FROM LIABILITY. Lessor shall not be liable
for injury or damage to the person or goods, wares, merchandise or other
property of Lessee, Lessee's employees, contractors, invitees, customers, or any
other person in or about the Premises, whether such damage or injury is caused
by or results from fire, steam, electricity, gas, water or rain, or from the
breakage, leakage, obstruction or other defects of pipes, fire sprinklers,
wires, appliances, plumbing, HVAC or lighting fixtures, or from any other cause,
whether the said injury or damage results from conditions arising upon the
Premises or upon other portions of the Building of which the Premises are a
part, or from other sources or places. Lessor shall not be liable for any
damages arising from any act or neglect of any other tenant of Lessor.
Notwithstanding Lessor's negligence or breach of this Lease, Lessor shall under
no circumstances be liable for injury to Lessee's business or for any loss of
income or profit therefrom.

9.      DAMAGE OR DESTRUCTION.

        9.1     DEFINITIONS.

               (a) "PREMISES PARTIAL DAMAGE" shall mean damage or destruction to
the improvements on the Premises, other than Lessee Owned Alterations, Utility
Installations and Trade


                                     PAGE 8


<PAGE>   9
Fixtures, which can reasonably be repaired in six (6) months or less from the
date of the damage or destruction. Lessor shall notify Lessee in writing within
thirty (30) days from the date of the damage or destruction as to whether or not
the damage is Partial or Total.

               (b) "PREMISES TOTAL DESTRUCTION" shall mean damage or destruction
to the Premises, other than Lessee Owned Alterations and Utility Installations
and Trade Fixtures, which cannot reasonably be repaired in six (6) months or
less from the date of the damage or destruction. Lessor shall notify Lessee in
writing within thirty (30) days from the date of the damage or destruction as to
whether or not the damage is Partial or Total.

               (c) "INSURED LOSS" shall mean damage or destruction to
improvements on the Premises, other than Lessee Owned Alterations and Utility
Installations and Trade Fixtures, which was caused by an event required to be
covered by the insurance described in Paragraph 8.3(a), irrespective of any
deductible amounts or coverage limits involved.

               (d) "REPLACEMENT COST" shall mean the cost to repair or rebuild
the improvements owned by Lessor at the time of the occurrence to their
condition existing immediately prior thereto, including demolition, debris
removal and upgrading required by the operation of Applicable Requirements, and
without deduction for depreciation.

               (e) "HAZARDOUS SUBSTANCE CONDITION" shall mean the occurrence or
discovery of a condition involving the presence of, or a contamination by, a
Hazardous Substance as defined in Paragraph 6.2(a), in, on, or under the
Premises.

        9.2     PARTIAL DAMAGE - INSURED LOSS. If a Premises Partial Damage that
is an Insured Loss occurs, then Lessor shall, at Lessors expense, repair such
damage (but not Lessee's Trade Fixtures or Lessee Owned Alterations and Utility
Installations) as soon as reasonably possible and this Lease shall continue in
full force and effect; provided, however, that Lessee shall, at Lessor's
election, make the repair of any damage or destruction the total cost to repair
of which is $10,000 or less, and, in such event, Lessor shall make any
applicable insurance proceeds available to Lessee on a reasonable basis for that
purpose. Notwithstanding the foregoing, if the required insurance was not in
force or the insurance proceeds are not sufficient to effect such repair, the
Insuring Party shall promptly contribute the shortage in proceeds as and when
required to complete said repairs. In the event, however, such shortage was due
to the fact that, by reason of the unique nature of the improvements, full
replacement cost insurance coverage was not commercially reasonable and
available, Lessor shall have no obligation to pay for the shortage in insurance
proceeds or to fully restore the unique aspects of the Premises unless Lessee
provides Lessor with the funds to cover same, or adequate assurance thereof,
within ten (10) days following receipt of written notice of such shortage and
request therefor. It Lessor receives said funds or adequate assurance thereof
within said ten (10)-day period, the party responsible for making the repairs
shall complete them as soon as reasonably possible and this Lease shall remain
in full force and effect. If such funds or assurance are not received, Lessor
may nevertheless elect by written notice to Lessee within ten (10) days
thereafter to: (i) make such restoration and repair as is commercially
reasonable with Lessor paying any shortage in proceeds, in which case this Lease
shall remain in full force and effect; or (ii) have this Lease terminate thirty
(30) days thereafter. Lessee shall not be entitled to reimbursement of any funds
contributed by Lessee to repair any such damage or destruction. Premises Partial
Damage due to flood or earthquake shall be subject to Paragraph 9.3,
notwithstanding that there may be some insurance coverage, but the net proceeds
of any such insurance shall be made available for the repairs if made by either
Party.

        9.3     PARTIAL DAMAGE - UNINSURED LOSS. If a Premises Partial Damage
that is not an Insured Loss occurs, unless caused by a negligent or willful act
of Lessee (in which event Lessee shall make the repairs at Lessee's expense),
Lessor may either: (i) repair such damage as soon as reasonably possible at
Lessor's expense, in which event this Lease shall continue in full force and
effect, or (ii) terminate this Lease by giving written notice to Lessee within
thirty (30) days after receipt by Lessor of knowledge of the occurrence of such
damage. Such termination shall be effective sixty (60) days following the date
of such notice. In the event Lessor elects to terminate this Lease, Lessee shall
have the right within ten (10) days after receipt of the termination notice to
give written notice to Lessor of Lessee's commitment to pay for the repair of
such damage without reimbursement from Lessor. Lessee shall provide Lessor with
said funds or satisfactory assurance thereof within thirty (30) days after
making such commitment. In such event this Lease shall continue in full force
and effect, and Lessor shall proceed to make such repairs as soon as reasonably
possible after the required funds are available. If Lessee does not make the
required commitment, this Lease shall terminate as of the date specified in the
termination notice.

        9.4     TOTAL DESTRUCTION. Notwithstanding any other provision hereof,
if a Premises Total Destruction occurs, this Lease shall terminate sixty (60)
days following such Destruction. If the damage or destruction was caused by the
gross negligence or willful misconduct of Lessee, Lessor shall have the right to
recover Lessor's damages from Lessee, except as provided in Paragraph 8.6.

        9.5     DAMAGE NEAR END OF TERM. If at any time during the last six (6)
months of this Lease there is damage for which the cost to repair exceeds one
(1) month's Base Rent, whether or not an Insured Loss, Lessor may terminate this
Lease effective sixty (60) days following the date of occurrence of such damage
by giving a written termination notice to Lessee within thirty (30) days after
the date of occurrence of such damage. Notwithstanding the foregoing, if Lessee
at that time has an exercisable option to extend this Lease or to purchase the
Premises, then Lessee may preserve this Lease by, (a) exercising such option and
(b) providing Lessor with any shortage in insurance proceeds (or adequate


                                     PAGE 9


<PAGE>   10
assurance thereof) needed to make the repairs on or before the earlier of (i)
the date which is ten days after Lessee's receipt of Lessor's written notice
purporting to terminate this Lease, or (ii) the day prior to the date upon which
such option expires. If Lessee duly exercises such option during such period and
provides Lessor with funds (or adequate assurance thereof) to cover any shortage
in insurance proceeds, Lessor shall, at Lessor's commercially reasonable
expense, repair such damage as soon as reasonably possible and this Lease shall
continue in full force and effect, If Lessee fails to exercise such option and
provide such funds or assurance during such period, then this Lease shall
terminate on the date specified in the termination notice and Lessee's option
shall be extinguished.

        9.6     ABATEMENT OF RENT; LESSEE'S REMEDIES.

               (a) ABATEMENT. In the event of Premises Partial Damage or
Premises Total Destruction or a Hazardous Substance Condition for which Lessee
is not responsible under this Lease, the Rent payable by Lessee for the period
required for the repair, remediation or restoration of such damage shall be
abated in proportion to the degree to which Lessee's use of the Premises is
impaired. All other obligations of Lessee hereunder shall be performed by
Lessee, and Lessor shall have no liability for any such damage, destruction,
remediation, repair or restoration except as provided herein.

               (b) REMEDIES. If Lessor shall be obligated to repair or restore
the Premises and does not commence, in a substantial and meaningful way, such
repair or restoration within ninety (90) days after such obligation shall
accrue, Lessee may, at any time prior to the commencement of such repair or
restoration, give written notice to Lessor and to any Lenders of which Lessee
has actual notice, of Lessee's election to terminate this Lease on a date not
less than sixty (60) days following the giving of such notice. If Lessee gives
such notice and such repair or restoration is not commenced within thirty (30)
days thereafter, this Lease shall terminate as of the date specified in said
notice. If the repair or restoration is commenced within said thirty (30) days,
this Lease shall continue in full force and effect. "COMMENCE" shall mean either
the unconditional authorization of the preparation of the required plans, or the
beginning of the actual work on the Premises, whichever first occurs.

        9.7     TERMINATION-ADVANCE PAYMENTS. Upon termination of this Lease
pursuant to Paragraph 6.2(g) or Paragraph 9, an equitable adjustment shall be
made concerning advance Base Rent and any other advance payments made by Lessee
to Lessor. Lessor shall, in addition, return to Lessee so much of Lessee's
Security Deposit as has not been, or is not then required to be, used by Lessor.

        9.8     WAIVE STATUTES. Lessor and Lessee agree that the terms of this
Lease shall govern the effect of any damage to or destruction of the Premises
with respect to the termination of this Lease and hereby waive the provisions of
any present or future statute to the extent inconsistent herewith.

10.     REAL PROPERTY TAXES.

        10.1    DEFINITION OF "REAL PROPERTY TAXES." As used herein, the term
"REAL PROPERTY TAXES" shall include any form of assessment; real estate,
general, special, ordinary or extraordinary, or rental levy or tax (other than
inheritance, personal income or estate taxes); improvement bond; and/or license
fee imposed upon or levied against any legal or equitable interest of Lessor in
the Premises, Lessor's right to other income therefrom, and/or Lessor's business
of leasing, by any authority having the direct or indirect power to tax and
where the funds are generated with reference to the Building address and where
the proceeds so generated are to be applied by the city, county or other local
taxing authority of a jurisdiction within which the Premises are located. The
term "REAL PROPERTY TAXES" shall also include any tax, fee, levy, assessment or
charge, or any increase therein, imposed by reason of events occurring during
the term of this Lease, including but not limited to, a change in the ownership
of the Premises.

        10.2

               (a) PAYMENT OF TAXES. Lessor shall pay the Real Property Taxes
applicable to the Premises provided, however, that Lessee shall pay to Lessor
the amount, if any, by which Real Property Taxes applicable to the Premises
increase over the fiscal tax year during which the Commencement Date occurs
("TAX INCREASE"). Subject to Paragraph 10.2(b), payment of any such Tax Increase
shall be made by Lessee to Lessor within thirty (30) days after receipt of
Lessor's written statement setting forth the amount due and the computation
thereof. If any such taxes shall cover any period of time prior to or after the
expiration or termination of this Lease, Lessee's share of such taxes shall be
prorated to cover only that portion of the tax bill applicable to the period
that this Lease is in effect.

               (b) ADVANCE PAYMENT. In the event Lessee incurs a late charge on
any Rent payment, Lessor may, at Lessor's option, estimate the current Real
Property Taxes, and require that the Tax Increase be paid in advance to Lessor
by Lessee, either: (i) in a lump sum amount equal to the amount due, at least
twenty (20) days prior to the applicable delinquency date; or (ii) monthly in
advance with the payment of the Base Rent. If Lessor elects to require payment
monthly in advance, the monthly payment shall be an amount equal to the amount
of the estimated installment of the Tax Increase divided by the number of months
remaining before the month in which said installment becomes delinquent. When
the actual amount of the applicable Tax Increase is known, the amount of such
equal monthly advance payments shall be adjusted as required to provide the
funds needed to pay the applicable Tax Increase. It the amount collected by
Lessor is insufficient to pay the Tax Increase when due, Lessee shall pay
Lessor, upon demand, such additional sums as are necessary to pay such
obligations. All moneys paid to Lessor under this Paragraph may be intermingled
with other moneys of Lessor and shall not bear interest. In the event of a
Breach by Lessee in the performance of its obligations under this Lease, then


                                    PAGE 10


<PAGE>   11
any balance of funds paid to Lessor under the provisions of this Paragraph may
at the option of Lessor, be treated as an additional Security Deposit.

               (c) ADDITIONAL IMPROVEMENTS. Notwithstanding anything to the
contrary in this Paragraph 10.2, Lessee shall pay to Lessor upon demand therefor
the entirety of any increase in Real Property Taxes assessed by reason of
Alterations or Utility Installations placed upon the Premises by Lessee or at
Lessee's request.

        10.3    JOINT ASSESSMENT. If the Premises are not separately assessed,
Lessee's liability shall be an equitable proportion of the Tax Increase for all
of the land and improvements included within the tax parcel assessed, such
proportion to be conclusively determined by Lessor from the respective
valuations assigned in the assessor's work sheets or such other information as
may be reasonably available.

        10.4    PERSONAL PROPERTY TAXES. Lessee shall pay, prior to delinquency,
all taxes assessed against and levied upon Lessee Owned Alterations, Utility
Installations, Trade Fixtures, furnishings, equipment and all personal property
of Lessee. When possible, Lessee shall cause such property to be assessed and
billed separately from the real property of Lessor. If any of Lessee's said
personal property shall be assessed with Lessor's real property, Lessee shall
pay Lessor the taxes attributable to Lessee's property within ten (10) days
after receipt of a written statement.

11.     Utilities. Lessee shall pay for all water, gas, heat, light, power,
JANITORIAL, telephone, trash disposal and other utilities and services supplied
to the Premises, together with any taxes thereon. It any such services are not
separately metered to Lessee, Lessee shall pay a reasonable proportion to be
determined by Lessor, of all charges jointly metered.

12.     ASSIGNMENT AND SUBLETTING.

        12.1    LESSOR'S CONSENT REQUIRED.

               (a) Lessee shall not voluntarily or by operation of law assign,
transfer, mortgage or encumber (collectively, "ASSIGN ASSIGNMENT") or sublet all
or any part of Lessee's interest in this Lease or in the Premises without
Lessor's prior written consent.

               (b) A change in the control of Lessee shall constitute an
assignment requiring consent. The transfer, on a cumulative basis, of fifty
percent (50%) or more of the voting control of Lessee shall constitute a change
in control for this purpose.

               (c) The involvement of Lessee or its assets in any transaction,
or series of transactions (by way of merger, sale, acquisition, financing,
transfer, leveraged buy-out or otherwise), whether or not a formal assignment or
hypothecation of this Lease or Lessee's assets occurs, which results or will
result in a reduction of the Net Worth of Lessee by an amount greater than
twenty-five percent (25%) of such Net Worth as it was represented at the time of
the execution of this Lease or at the time of the most recent assignment to
which Lessor has consented, or as it exists immediately prior to said
transaction or transactions constituting such reduction, whichever was or is
greater, shall be considered an assignment of this Lease to which Lessor may
withhold its consent. "NET WORTH OF LESSEE" shall mean the net worth of Lessee
(excluding any guarantors) established under generally accepted accounting
principles.

               (d) An assignment or subletting without consent shall, at Lessors
option, be a Default curable after notice per Paragraph 13.1(c), or a noncurable
Breach without the necessity of any notice and grace period. If Lessor elects to
treat such unapproved assignment or subletting as a noncurable Breach, Lessor
may either: (i) terminate this Lease, or (ii) upon thirty (30) days written
notice, increase the monthly Base Rent to one hundred ten percent (110%) of the
Base Rent then in effect. Further, in the event of such Breach and rental
adjustment, (i) the purchase price of any option to purchase the Premises held
by Lessee shall be subject to similar adjustment to one hundred ten percent
(110%) of the price previously in effect, and (ii) all fixed and non-fixed
rental adjustments scheduled during the remainder of the Lease term shall be
increased to one hundred ten percent (110%) of the scheduled adjusted rent.

               (e) Lessee's remedy for any breach of Paragraph 12.1 by Lessor
shall be limited to compensatory damages and/or injunctive relief.

        12.2    TERMS AND CONDITIONS APPLICABLE TO ASSIGNMENT AND SUBLETTING.

               (a) Regardless of Lessor's consent, any assignment or subletting
shall not: (i) be effective without the express written assumption by such
assignee or sublessee of the obligations of Lessee under this Lease; (ii)
release Lessee of any obligations hereunder, or (iii) alter the primary
liability of Lessee for the payment of Rent or for the performance of any other
obligations to be performed by Lessee.

               (b) Lessor may accept Rent or performance of Lessee's obligations
from any person other than Lessee pending approval or disapproval of an
assignment. Neither a delay in the approval or disapproval of such assignment
nor the acceptance of Rent or performance shall constitute a waiver or estoppel
of Lessor's right to exercise its remedies for Lessee's Default or Breach.

               (c) Lessor's consent to any assignment or subletting shall not
constitute a consent to any subsequent assignment or subletting.


                                    PAGE 11


<PAGE>   12
               (d) In the event of any Default or Breach by Lessee, Lessor may
proceed directly against Lessee, any Guarantors or anyone else responsible for
the performance of Lessee's obligations under this Lease, including any assignee
or sublessee, without first exhausting Lessor's remedies against any other
person or entity responsible therefore to Lessor, or any security held by
Lessor.

               (e) Each request for consent to an assignment or subletting shall
be in writing, accompanied by information relevant to Lessor's determination as
to the financial and operational responsibility and appropriateness of the
proposed assignee or sublessee, including but not limited to the intended use
and/or required modification of the Premises, if any, together with a fee of
$1,000 as consideration for Lessor's considering and processing said request.
Lessee agrees to provide Lessor with such other or additional information and/or
documentation as may be reasonably requested.

               (f) any assignee of, or sublessee under, this Lease shall, by
reason of accepting such assignment or entering into such sublease, be deemed to
have assumed and agreed to conform and comply with each and every term,
covenant, condition and obligation herein to be observed or performed by Lessee
during the term of said assignment or sublease, other than such obligations as
are contrary to or inconsistent with provisions of an assignment or sublease to
which Lessor has specifically consented to in writing.

        12.3    ADDITIONAL TERMS AND CONDITIONS APPLICABLE TO SUBLETTING. The
following terms and conditions shall apply to any subletting by Lessee of all or
any part of the Premises and shall be deemed included in all subleases under
this Lease whether or not expressly incorporated therein:

               (a) Lessee hereby assigns and transfers to Lessor all of Lessee's
interest in all Rent payable on any sublease, and Lessor may collect such Rent
and apply same toward Lessee's obligations under this Lease; provided, however,
that until a Breach shall occur in the performance of Lessee's obligations,
Lessee may collect said Rent. Lessor shall not, by reason of the foregoing or
any assignment of such sublease, nor by reason of the collection of Rent, be
deemed liable to the sublessee for any failure of Lessee to perform and comply
with any of Lessee's obligations to such sublessee. Lessee hereby irrevocably
authorizes and directs any such sublessee, upon receipt of a written notice from
Lessor stating that a Breach exists in the performance of Lessee's obligations
under this Lease, to pay to Lessor all Rent due and to become due under the
sublease. Sublessee shall rely upon any such notice from Lessor and shall pay
all Rents to Lessor without any obligation or right to inquire as to whether
such Breach exists, notwithstanding any claim from Lessee to the contrary.

               (b) In the event of a Breach by Lessee, Lessor may, at its
option, require sublessee to attorn to Lessor, in which event Lessor shall
undertake the obligations of the sublessor under such sublease from the time of
the exercise of said option to the expiration of such sublease; provided,
however, Lessor shall not be liable for any prepaid rents or security deposit
paid by such sublessee to such sublessor or for any prior Defaults or Breaches
of such sublessor.

               (c) Any matter requiring the consent of the sublessor under a
sublease shall also require the consent of Lessor.

               (d) No sublessee shall further assign or sublet all or any part
of the Premises without Lessor's prior written consent.

               (e) Lessor shall deliver a copy of any notice of Default or
Breach by Lessee to the sublessee, who shall have the right to cure the Default
of Lessee within the grace period, if any, specified in such notice. The
sublessee shall have a right of reimbursement and offset from and against Lessee
for any such Defaults cured by the sublessee.

13.     DEFAULT; BREACH; REMEDIES.

        13.1    DEFAULT; BREACH. A "DEFAULT" is defined as a failure by the
Lessee to comply with or perform any of the terms, covenants, conditions or
rules under this Lease. A "BREACH" is defined as the occurrence of one or more
of the following Defaults, and the failure of Lessee to cure such Default within
any applicable grace period:

               (a) The abandonment of the Premises; or the vacating of the
Premises without providing a commercially reasonable level of security, and/or
Security Deposit or where the coverage of the property insurance described in
Paragraph 8.3 is jeopardized as a result thereof, or without providing
reasonable assurances to minimize potential vandalism.

               (b) The failure of Lessee to make any payment of Rent or any
Security Deposit required to be made by Lessee hereunder, whether to Lessor or
to a third party, when due, to provide reasonable evidence of insurance or
surety bond, or to fulfill any obligation under this Lease which endangers or
threatens life or property, where such failure continues for a period of three
(3) business days following written notice to Lessee.

               (c) The failure by Lessee to provide (i) reasonable written
evidence of compliance with Applicable Requirements, (ii) the service contracts,
(iii) the rescission of an unauthorized assignment or subletting, (iv) a
Estoppel Certificate, (v) a requested subordination, (vi) evidence concerning
any guaranty and/or Guarantor, (vii) any document requested under Paragraph 42
(easements), or (viii) any other documentation or information which Lessor may
reasonably require of Lessee under the terms of this Lease, where any such
failure continues for a period of ten (10) days following written notice to
Lessee.


                                    PAGE 12


<PAGE>   13
               (d) A Default by Lessee as to the terms, covenants, conditions or
provisions of this Lease, or of the rules adopted under Paragraph 40 hereof,
other than those described in subparagraphs 13.1(a), (b) or (c), above, where
such Default continues for a period of thirty (30) days after written notice;
provided, however, that if the nature of Lessee's Default is such that more than
thirty (30) days are reasonably required for its cure, then it shall not be
deemed to be a Breach if Lessee commences such cure within said thirty (30)-day
period and thereafter diligently prosecutes such cure to completion.

               (e) The occurrence of any of the following events: (i) the making
of any general arrangement or assignment for the benefit of creditors; (ii)
becoming a "DEBTOR" as defined in 11 U.S.C. Section 101 or any successor statute
thereto (unless, in the case of a petition filed against Lessee, the same is
dismissed within sixty (60) days); (iii) the appointment of a trustee or
receiver to take possession of substantially all of Lessee's assets located at
the Premises or of Lessee's interest in this Lease, where possession is not
restored to Lessee within thirty (30) days; or (iv) the attachment, execution or
other judicial seizure of substantially all of Lessee's assets located at the
Premises or of Lessee's interest in this Lease, where such seizure is not
discharged within thirty (30) days; provided, however, in the event that any
provision of this subparagraph (e) is contrary to any applicable law, such
provision shall be of no force or effect, and not affect the validity of the
remaining provisions.

               (f) The discovery that any financial statement of Lessee or of
any Guarantor given to Lessor was materially false.

               (g) If the performance of Lessee's obligations under this Lease
is guaranteed: (i) the death of a Guarantor; (ii) the termination of a
Guarantor's liability with respect to this Lease other than in accordance with
the terms of such guaranty; (iii) a Guarantor's becoming insolvent or the
subject of a bankruptcy filing; (iv) a Guarantor's refusal to honor the
guaranty; or (v) a Guarantor's breach of its guaranty obligation on an
anticipatory basis, and Lessee's failure, within sixty (60) days following
written notice of any such event, to provide written alternative assurance or
security, which, when coupled with the then existing resources of Lessee, equals
or exceeds the combined financial resources of Lessee and the Guarantors that
existed at the time of execution of this Lease.

        13.2    REMEDIES. If Lessee fails to perform any of its affirmative
duties or obligations, within ten (10) days after written notice (or in case of
an emergency, without notice), Lessor may, at its option, perform such duty or
obligation on Lessee's behalf, including but not limited to the obtaining of
reasonably required bonds, insurance policies, or governmental licenses, permits
or approvals. The costs and expenses of any such performance by Lessor shall be
due and payable by Lessee upon receipt of invoice therefor. If any check given
to Lessor by Lessee shall not be honored by the bank upon which it is drawn,
Lessor, at its option, may require all future payments to be made by Lessee to
be by cashier's check. In the event of a Breach, Lessor may, with or without
further notice or demand, and without limiting Lessor in the exercise of any
right or remedy which Lessor may have by reason of such Breach:

               (a) Terminate Lessee's right to possession of the Premises by any
lawful means, in which case this Lease shall terminate and Lessee shall
immediately surrender possession to Lessor. In such event Lessor shall be
entitled to recover from Lessee: (i) the unpaid Rent which had been earned at
the time of termination; (ii) the worth at the time of award of the amount by
which the unpaid rent which would have been earned after termination until the
time of award exceeds the amount of such rental loss that the Lessee proves
could have been reasonably avoided; (iii) the worth at the time of award of the
amount by which the unpaid rent for the balance of the term after the time of
award exceeds the amount of such rental loss that the Lessee proves could be
reasonably avoided; and (iv) any other amount necessary to compensate Lessor for
all the detriment proximately caused by the Lessee's failure to perform its
obligations under this Lease or which in the ordinary course of things would be
likely to result therefrom, including but not limited to the cost of recovering
possession of the Premises, expenses of reletting, including necessary
renovation and alteration of the Premises, reasonable attorneys' fees, and that
portion of any leasing commission paid by Lessor in connection with this Lease
applicable to the unexpired term of this Lease. The worth at the time of award
of the amount referred to in provision (iii) of the immediately preceding
sentence shall be computed by discounting such amount at the discount rate of
the Federal Reserve Bank of the District within which the Premises are located
at the time of award plus one percent (1%). Efforts by Lessor to mitigate
damages caused by Lessee's Breach of this Lease shall not waive Lessor's right
to recover damages under Paragraph 12. If termination of this Lease is obtained
through the provisional remedy of unlawful detainer, Lessor shall have the right
to recover in such proceeding any unpaid Rent and damages as are recoverable
therein, or Lessor may reserve the right to recover all or any part thereof in a
separate suit. If a notice and grace period required under Paragraph 13.1 was
not previously given, a notice a pay rent or quit, or to perform or quit given
to Lessee under the unlawful detainer statute shall also constitute the notice
required by Paragraph 13.1. In such case, the applicable grace period required
by Paragraph 13.1 and the unlawful detainer statute shall run concurrently, and
the failure of Lessee to cure the Default within the greater of the two such
grace periods shall constitute both an unlawful detainer and a Breach of this
Lease entitling Lessor to the remedies provided for in this Lease and/or by said
statute.

               (b) Continue this Lease and Lessee's right to possession and
recover the Rent as it becomes due, in which event Lessee may sublet or assign,
subject only to reasonable limitations. Acts of maintenance, efforts to relet,
and/or the appointment of a receiver to protect the Lessor's interests, shall
not constitute a termination of the Lessee's right to possession.

               (c) Pursue any other remedy now or hereafter available under the
laws or judicial decisions of the state wherein the Premises are located. The
expiration or termination of this Lease


                                    PAGE 13


<PAGE>   14
and/or the termination of Lessee's right to possession shall not relieve Lessee
from liability under any indemnity provisions of this Lease as to matters
occurring or accruing during the term hereof or by reason of Lessee's occupancy
of the Premises.

        13.3    INDUCEMENT RECAPTURE. Any agreement for free or abated rent or
other charges, or for the giving or paying by Lessor to or for Lessee of any
cash or other bonus, inducement or consideration for Lessee's entering into this
Lease, all of which concessions are hereinafter referred to as "INDUCEMENT
PROVISIONS" shall be deemed conditioned upon Lessee's full and faithful
performance of all of the terms, covenants and conditions of this Lease. Upon
Breach of this Lease by Lessee, any such Inducement Provision shall
automatically be deemed deleted from this Lease and of no further force or
effect, and any rent, other charge, bonus, inducement or consideration
theretofore abated, given or paid by Lessor under such an Inducement Provision
shall be immediately due and payable by Lessee to Lessor, notwithstanding any
subsequent cure of said Breach by Lessee. The acceptance by Lessor of rent or
the cure of the Breach which initiated the operation of this paragraph shall not
be deemed a waiver by Lessor of the provisions of this paragraph unless
specifically so stated in writing by Lessor at the time of such acceptance.

        13.4    LATE CHARGES. Lessee hereby acknowledges that late payment by
Lessee of Rent will cause Lessor 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 upon Lessor by any Lender. Accordingly, if any Rent
shall not be received by Lessor within five (5) days after such amount shall be
due, then, without any requirement for notice to Lessee, Lessee shall pay to
Lessor a one-time late charge equal to five percent (5%) of each such overdue
amount. The parties hereby agree that such late charge represents a fair and
reasonable estimate of the costs Lessor will incur by reason of such late
payment. Acceptance of such late charge by Lessor shall in no event constitute a
waiver of Lessee's Default or Breach with respect to such overdue amount, nor
prevent the exercise of any of the other rights and remedies granted hereunder.
In the event that a late charge is payable hereunder, whether or not collected,
for three (3) consecutive installments of Base Rent, then notwithstanding any
provision of this Lease to the contrary, Base Rent shall, at Lessor's option,
become due and payable quarterly in advance.

        13.5    INTEREST. Any monetary payment due Lessor hereunder, other than
late charges, not received by Lessor, when due as to scheduled payments (such as
Base Rent) or within thirty (30) days following the date on which it was due for
non-scheduled payment, shall bear interest from the date when due, as to
scheduled payments, or the thirty-first (31st) day after it was due as to
non-scheduled payments. The interest ("INTEREST") charged shall be equal to the
prime rate reported in the Wall Street Journal as published closest prior to the
date when due plus 4%, but shall not exceed the maximum rate allowed by law.
Interest is payable in addition to the potential late charge provided for in
Paragraph 13.4.

        13.6    BREACH BY LESSOR.

               (a) NOTICE OF BREACH. Lessor shall not be deemed in breach of
this Lease unless Lessor fails within a reasonable time to perform an obligation
required to be performed by Lessor. For purposes of this Paragraph, a reasonable
time shall in no event be less than thirty (30) days after receipt by Lessor,
and any Lender whose name and address shall have been furnished Lessee in
writing for such purpose, of written notice specifying wherein such obligation
of Lessor has not been performed; provided, however, that if the nature of
Lessor's obligation is such that more than thirty (30) days are reasonably
required for its performance, then Lessor shall not be in breach if performance
is commenced within such thirty (30)-day period and thereafter diligently
pursued to completion.

               (b) PERFORMANCE BY LESSEE ON BEHALF OF LESSOR. In the event that
neither Lessor nor Lender cures said breach within thirty (30) days after
receipt of said written notice, or if having commenced said cure they do not
diligently pursue it to completion, then Lessee may elect to cure said breach at
Lessee's expense and offset from Rent an amount equal to the greater of one
month's Base Rent or the Security Deposit, and to pay an excess of such expense
under protest, reserving Lessee's right to reimbursement from Lessor. Lessee
shall document the cost of said cure and supply said documentation to Lessor.

14.     Condemnation. If the Premises, or any portion thereof are taken under
the power of eminent domain or sold under the threat of the exercise of said
power (collectively "CONDEMNATION"), this Lease shall terminate as to the part
taken as of the date the condemning authority takes title or possession,
whichever first occurs. If more than ten percent (10%) of any building portion
of the premises, or more than twenty-five percent (25%) of the land area portion
of the premises not occupied by any building, is taken by Condemnation, Lessee
may, at Lessee's option, to be exercised in writing within ten (10) days after
Lessor shall have given Lessee written notice of such taking (or in the absence
of such notice, within ten (10) days after the condemning authority shall have
taken possession) terminate this Lease as of the date the condemning authority
takes such possession. If Lessee does not terminate this Lease in accordance
with the foregoing, this Lease shall remain in full force and effect as to the
portion of the Premises remaining, except that the Base Rent shall be reduced in
proportion to the reduction in utility of the Premises caused by such
Condemnation. Condemnation awards and/or payments shall be the property of
Lessor, whether such award shall be made as compensation for diminution in value
of the leasehold, the value of the part taken, or for severance damages;
provided, however, that Lessee shall be entitled to any compensation for
Lessee's relocation expenses, loss of business goodwill and/or Trade Fixtures,
without regard to whether or not this Lease is terminated pursuant to the
provisions of this Paragraph. All Alterations and Utility Installations made to
the Premises by Lessee, for purposes of


                                     PAGE 14


<PAGE>   15
Condemnation only, shall be considered the property of the Lessee and Lessee
shall be entitled to any and all compensation which is payable therefor. In the
event that this Lease is not terminated by reason of the Condemnation, Lessor
shall repair any damage to the Premises caused by such Condemnation.

15.     BROKER'S FEE.

        15.1    [DELETED].

        15.2    ASSUMPTION OF OBLIGATIONS. Any buyer or transferee of Lessor's
interest in this Lease shall be deemed to have assumed Lessor's obligation
hereunder. Each Broker shall be a third party beneficiary of the provisions of
Paragraphs 1.10, 15, 22 and 31. If Lessor fails to pay to a Broker any amounts
due as and for commissions pertaining to this Lease when due, then such amounts
shall accrue Interest. In addition, if Lessor fails to pay any amounts to
Lessee's Broker when due, Lessee's Broker may send written notice to Lessor and
Lessee of such failure and if Lessor fails to pay such amounts within ten (10)
days after said notice, Lessee shall pay said monies to its Broker and offset
such amounts against Rent. In addition, Lessee's Broker shall be deemed to be a
third party beneficiary of any commission agreement entered into by and/or
between Lessor and Lessor's Broker.

        15.3    REPRESENTATIONS AND INDEMNITIES OF BROKER RELATIONSHIPS. Lessee
and Lessor each represent and warrant to the other that it has had no dealings
with any person, firm, broker or finder (other than the Brokers, if any) in
connection with this Lease, and that no one other than said named Brokers is
entitled to any commission or finder's fee in connection herewith. Lessee and
Lessor do each hereby agree to indemnify, protect, defend and hold the other
harmless from and against liability for compensation or charges which may be
claimed by any such unnamed broker, finder or other similar party by reason of
any dealings or actions of the indemnifying Party, including any costs,
expenses, attorneys' fees reasonably incurred with respect thereto.

16.     ESTOPPEL CERTIFICATES.

               (a) Each Party (as "RESPONDING PARTY") shall within ten (10) days
after written notice from the other Party (the "REQUESTING PARTY") execute,
acknowledge and deliver to the Requesting Party a statement in writing in form
similar to the then most current "ESTOPPEL CERTIFICATE" form published by the
American Industrial Real Estate Association, plus such additional information,
confirmation and/or statements as may be reasonably requested by the Requesting
Party.

               (b) If the Responding Party shall fail to execute or deliver the
Estoppel Certificate within such ten day period, the Requesting Party may
execute an Estoppel Certificate stating that: (i) the Lease is in full force and
effect without modification except as may be represented by the Requesting
Party; (ii) there are no uncured defaults in the Requesting Party's performance;
and (iii) if Lessor is the Requesting Party, not more than one month's rent has
been paid in advance. Prospective purchasers and encumbrancers may rely upon the
Requesting Party's Estoppel Certificate, and the Responding Party shall be
estopped from denying the truth of the facts contained in said Certificate.

               (c) If Lessor desires to finance, refinance, or sell the
Promises, or any part thereof, Lessee and all Guarantors shall deliver to any
potential lender or purchaser designated by Lessor such financial statements as
may be reasonably required by such lender or purchaser, including but not
limited to Lessee's financial statements for the past three (3) years. All such
financial statements shall be received by Lessor and such lender or purchaser in
confidence and shall be used only for the purposes herein set forth.

17.     Definition of Lessor. The term "LESSOR" as used herein shall mean the
owner or owners at the time in question of the fee title to the Premises, or, if
this is a sublease, of the Lessee's interest in the prior lease. In the event of
a transfer of Lessor's title or interest in the Premises or this Lease, Lessor
shall deliver to the transferee or assignee (in cash or by credit) any unused
Security Deposit held by Lessor. Except as provided in Paragraph 15, upon such
transfer or assignment and delivery of the Security Deposit, as aforesaid, the
prior Lessor shall be relieved of all liability with respect to the obligations
and/or covenants under this Lease thereafter to be performed by the Lessor.
Subject to the foregoing, the obligations and/or covenants in this Lease to be
performed by the Lessor shall be binding only upon the Lessor as hereinabove
defined. Notwithstanding the above, and subject to the provisions of Paragraph
20 below, the original Lessor under this Lease, and all subsequent holders of
the Lessor's interest in this Lease shall remain liable and responsible with
regard to the potential duties and liabilities of Lessor pertaining to Hazardous
Substances as outlined in Paragraph 6 above.

18.     Severability. The invalidity of any provision of this Lease, as
determined by a court of competent jurisdiction, shall in no way affect the
validity of any other provision hereof.

19.     Days. Unless otherwise specifically indicated to the contrary, the word
"days" as used in this Lease shall mean and refer to calendar days.

20.     Limitation on Liability. Subject to the provisions of Paragraph 17
above, the obligations of Lessor under this Lease shall not constitute personal
obligations of Lessor, the individual partners of Lessor or its or their
individual partners, directors, officers or shareholders, and Lessee shall look
to the Premises, and to no other assets of Lessor, for the satisfaction of any
liabiliTy of Lessor with respect to this Lease, and shall not seek recourse
against the individual partners of Lessor, or its or their individual partners,
directors, officers or shareholders, or any of their personal assets for such
satisfaction.


                                    PAGE 15


<PAGE>   16
21.     Time of Essence. Time is of the essence with respect to the performance
of all obligations to be performed or observed by the Parties under this Lease.

22.     No Prior or Other Agreements; Broker Disclaimer. This Lease contains all
agreements between the Parties with respect to any matter mentioned herein, and
no other prior or contemporaneous agreement or understanding shall be effective.
Lessor and Lessee each represents and warrants to the Brokers that it has made,
and is relying solely upon, its own investigation as to the nature, quality,
character and financial responsibility of the other Party to this Lease and as
to the nature, quality and character of the Premises. Brokers have no
responsibility with respect thereto or with respect to any default or breach
hereof by either Party. The liability (including court costs and Attorneys'
fees), of any Broker with respect to negotiation, execution, delivery or
performance by either Lessor or Lessee under this Lease or any amendment or
modification hereto shall be limited to an amount up to the fee received by such
Broker pursuant to this Lease; provided, however, that the foregoing limitation
on each Broker's liability shall not be applicable to any gross negligence or
willful misconduct of such Broker.

23.     NOTICES.

        23.1    NOTICE REQUIREMENTS. All notices required or permitted by this
Lease shall be in writing and may be delivered in person (by hand or by courier)
or may be sent by regular, certified or registered mail or U.S. Postal Service
Express Mail, with postage prepaid, or by facsimile transmission, and shall be
deemed sufficiently given if served in a manner specified in this Paragraph 23.
The addresses noted adjacent to a Party's signature on this Lease shall be that
Party's address for delivery or mailing of notices. Either Party may by written
notice to the other specify a different address for notice, except that upon
Lessee's taking possession of the Premises, the Premises shall constitute
Lessee's address for notice. A copy of all notices to Lessor shall be
concurrently transmitted to such party or parties at such addresses as Lessor
may from time to time hereafter designate in writing.

        23.2    DATE OF NOTICE. Any notice sent by registered or certified mail,
return receipt requested, shall be deemed given on the date of delivery shown on
the receipt card, or if no delivery date is shown, the postmark thereon. If sent
by regular mail the notice shall be deemed given forty-eight (48) hours after
the same is addressed as required herein and mailed with postage prepaid.
Notices delivered by United States Express Mail or overnight courier that
guarantee next day delivery shall be deemed given twenty-four (24) hours after
delivery of the same to the Postal Service or courier. Notices transmitted by
facsimile transmission or similar means shall be deemed delivered upon telephone
confirmation of receipt, provided a copy is also delivered via delivery or mail.
If notice is received on a Saturday, Sunday or legal holiday, it shall be deemed
received on the next business day.

24.     Waivers. No waiver by Lessor of the Default or Breach of any term,
covenant or condition hereof by Lessee, shall be deemed a waiver of any other
term, covenant or condition hereof, or of any subsequent Default or Breach by
Lessee of the same or of any other term, covenant or condition hereof. Lessor's
consent to, or approval of, any act shall not be deemed to render unnecessary
the. obtaining of Lessor's consent of to, or approval of, any subsequent or
similar act by Lessee, or be construed as the basis of an estoppel to enforce
the provision or provisions this Lease requiring such consent. The acceptance of
Rent by Lessor shall not be a waiver of any Default or Breach by Lessee, Any
payment by Lessee may be accepted by Lessor on account of moneys or damages due
Lessor, notwithstanding any qualifying statements or conditions made by Lessee
in connection therewith, which such statements and/or conditions shall be of no
force or effect whatsoever unless specifically agreed to in writing by Lessor at
or before the time of deposit of such payment.

25.     Recording. Either Lessor or Lessee shall, upon request of the other,
execute, acknowledge and deliver to the other a short form memorandum of this
Lease for recording purposes. The Party requesting recordation shall be
responsible for payment of any fees applicable thereto.

26.     No Right To Holdover. Lessee has no right to retain possession of the
Premises or any part thereof beyond the expiration or termination of this Lease.
In the event that Lessee holds over, then the Base Rent shall be increased to
one hundred twenty-five percent (125%) of the Base Rent applicable, during the
month immediately preceding the expiration or termination. Nothing contained
herein shall be construed as consent by Lessor to any holding over by Lessee.

27.     Cumulative Remedies. No remedy or election hereunder shall be deemed
exclusive but shall, wherever possible, be cumulative with all other remedies at
law or in equity.

28.     Covenants and Conditions; Construction of Agreement. All provisions of
this Lease to be observed or performed by Lessee are both covenants and
conditions. In construing this Lease, all headings and titles are for the
convenience of the parties only and shall not be considered a part of this
Lease. Whenever required by the context, the singular shall include the plural
and vice versa. This Lease shall not be construed as if prepared by one of the
parties, but rather according to its fair meaning as a whole, as if both parties
had prepared it.

29.     Binding Effect; Choice of Law. This Lease shall be binding upon the
parties, their personal representatives, successors ands assigns and be governed
by the laws of the State in which the Premises are located. Any litigation
between the Parties hereto concerning this Lease shall be initiated in the
county in which the Premises are located.


                                    PAGE 16


<PAGE>   17
30.     SUBORDINATION; ATTORNMENT; NON-DISTURBANCE.

        30.1    SUBORDINATION. This Lease and any Option granted hereby shall be
subject and subordinate to any ground lease, mortgage, deed of trust, or other
hypothecation or security device (collectively, "SECURITY DEVICE"), now or
hereafter placed upon the Premises, to any and all advances made on the security
thereof, and to all renewals, modifications, and extensions thereof. Lessee
agrees that the holders of any such Security Devices (in this Lease together
referred to as "Lender") shall have no liability or obligation to perform any of
the obligations of Lessor under this Lease. Any Lender may elect to have this
Lease and/or any Option granted hereby superior to the lien of its Security
Device by giving written notice thereof to Lessee whereupon this Lease and such
Options shall be deemed prior to such Security Device, notwithstanding the
relative dates of the documentation or recordation thereof.

        30.2    ATTORNMENT. Subject to the non-disturbance provisions of
Paragraph 30.3, Lessee agrees to attorn to a Lender or any other party who
acquires ownership of the Premises by reason of a foreclosure of a Security
Device, and that in the event of such foreclosure, such new owner shall not: (i)
be liable for any act or omission of any prior lessor or with respect to events
occurring prior to acquisition of ownership; (ii) be subject to any offsets or
defenses which Lessee might have against any prior lessor; or (iii) be bound by
prepayment of more than one (1) month's rent.

        30.3    NON-DISTURBANCE. With respect to Security Devices entered into
by Lessor after the execution of this Lease, Lessee's subordination of this
Lease shall be subject to receiving a commercially reasonable non-disturbance
agreement (a "NON-DISTURBANCE AGREEMENT") from the Lender which Non-Disturbance
Agreement provides that Lessee's possession of the Premises, and this Lease,
including any options to extend the term hereof, will not be disturbed so long
as Lessee is not in Breach hereof and attorns to the record owner of the
Premises. Further, within sixty (60) days after the execution of this Lease,
Lessor shall use its commercially reasonable efforts to obtain a Non-Disturbance
Agreement from the holder of any pre-existing Security Device which is secured
by the Premises. In the event that Lessor is unable to provide the
Non-Disturbance Agreement within said sixty (60) days, then Lessee may, at
Lessee's option, directly contact Lessor's lender and attempt to negotiate for
the execution and delivery of a Non-Disturbance Agreement.

        30.4    SELF-EXECUTING. The agreements contained in this Paragraph 30
shall be effective without the execution of any further documents; provided,
however, that, upon written request from Lessor or a Lender in connection with a
sale, financing or refinancing of the Premises, Lessee and Lessor shall execute
such further writings as may be reasonably required to separately document any
subordination, attornment and/or Non-Disturbance Agreement provided for herein.

31.     Attorneys' Fees. If any Party or Broker brings an action or proceeding
involving the Premises to enforce the terms hereof or to declare rights
hereunder, the Prevailing Party (as hereafter defined) in any such proceeding,
action, or appeal thereon, shall be entitled to reasonable attorneys' fees. Such
fees may be awarded in the same suit or recovered in a separate suit, whether or
not such action or proceeding is pursued to decision or judgment. The term,
"PREVAILING PARTY" shall include, without limitation, a Party or Broker who
substantially obtains or defeats the relief sought, as the case may be, whether
by compromise, settlement, judgment, or the abandonment by the other Party or
Broker of its claim or defense. The attorneys' fees award shall not be computed
in accordance with any court fee schedule, but shall be such as to fully
reimburse all attorneys' fees reasonably incurred. In addition, Lessor shall be
entitled to attorneys' fees, costs and expenses incurred in the preparation and
service of notices of Default and consultations in connection therewith, whether
or not a legal action is subsequently commenced in connection with such Default
or resulting Breach.

32.     Lessor's Access; Showing Premises; Repairs. Lessor and Lessor's agents
shall have the right to enter the Premises at any time in the case of an
emergency, and otherwise at reasonable times subject to 24 hours prior notice to
Lessee (or Lessees within the last six months of the lease for the purpose of
showing the same to prospective purchasers, lenders, and making such
alterations, repairs, improvements or additions to the Premises as Lessor may
deem necessary. All such activities shall be without abatement of rent or
liability to Lessee. Lessor may at any time place on the Premises any ordinary
"FOR SALE" signs and Lessor may during the last six (6) months of the term
hereof place on the Premises any ordinary "FOR LEASE" signs. Lessee may at any
time place on or about the Premises any ordinary "FOR SUBLEASE" sign.

33.     Auctions. Lessee shall not conduct, nor permit to be conducted, any
auction upon the Premises without Lessor's prior written consent. Lessor shall
not be obligated to exercise any standard of reasonableness in, determining
whether to permit an auction.

34.     Signs. Except for ordinary "For Sublease" signs, Lessee shall not place
any sign upon the Premises without Lessor's prior written consent. All signs
must comply with all Applicable Requirements. (See Paragraph 61).

35.     Termination; Merger. Unless specifically stated otherwise in writing by
Lessor, the voluntary or other surrender of this Lease by Lessee, the mutual
termination or cancellation hereof, or a termination hereof by Lessor for Breach
by Lessee, shall automatically terminate any sublease or lesser estate in the
Promises; provided, however, that Lessor may elect to continue any one or all
existing subtenancies. Lessor's failure within ten (10) days following any such
event to elect to the contrary by written notice to the holder of any such
lesser interest, shall constitute Lessor's election to have such event
constitute the termination of such interest.


                                    PAGE 17


<PAGE>   18
36.     Consents. Except as otherwise provided herein, wherever in this Lease
the consent of a Party is required to an act by or for the other Party, such
consent shall not be unreasonably withheld or delayed. Lessor's actual
reasonable costs and expenses (including but not limited to architects',
attorneys', engineers' and other consultants' fees) incurred in the
consideration of, or response to, a request by Lessee for any Lessor consent,
including but not limited to consents to an assignment, a subletting or the
presence or use of a Hazardous Substance, shall be paid by Lessee upon receipt
of an invoice and supporting documentation therefor. Lessor's consent to any
act, assignment or subletting shall not constitute an acknowledgment that no
Default or Breach by Lessee of this Lease exists, nor shall such consent be
deemed a waiver of any then existing Default or Breach, except as may be
otherwise specifically stated in writing by Lessor at the time of such consent.
The failure to specify herein any particular condition to Lessor's consent shall
not preclude the imposition by Lessor at the time of consent of such further or
other conditions as are then reasonable with reference to the particular matter
for which consent is being given. In the event that either Party disagrees with
any determination made by the other hereunder and reasonably requests the
reasons for such determination, the determining party shall furnish its reasons
in writing and in reasonable detail within ten (10) business days following such
request.

37.     GUARANTOR.

        37.1    EXECUTION. The Guarantors, if any, shall each execute a guaranty
in the form most recently published by the American Industrial Real Estate
Association, and each such Guarantor shall have the same obligations as Lessee
under this Lease.

        37.2    Default. It shall constitute a Default of the Lessee if any
Guarantor fails or refuses, upon request to provide: (a) evidence of the
execution of the guaranty, including the authority of the party signing on
Guarantor's behalf to obligate Guarantor, and in the case of a corporate
Guarantor, a certified copy of a resolution of its board of directors
authorizing the making of such guaranty, (b) current financial statements, (c) a
Estoppel Certificate, or (d) written confirmation that the guaranty is still in
effect.

38.     Quiet Possession. Subject to payment by Lessee of the Rent and
performance of all of the covenants, conditions and provisions on Lessee's part
to be observed and performed under this Lease, Lessee shall have quiet
possession and quiet enjoyment of the Premises during the term hereof.

39.     OPTIONS.

        39.1    DEFINITION. "OPTION" shall mean: (a) the right to extend the
term of or renew this Lease or to extend or renew any lease that Lessee has on
other property of Lessor; (b) the right of first refusal or first offer to lease
either the Premises or other property of Lessor; (c) the right to purchase or
the right of first refusal to purchase the Premises or other property of Lessor.

        39.2    OPTIONS PERSONAL TO ORIGINAL LESSEE. Each Option granted to
Lessee in this Lease is personal to the original Lessee, and cannot be assigned
or exercised by anyone other than said original Lessee and only while the
original Lessee is in full possession of the Premises and, if requested by
Lessor, with Lessee certifying that Lessee has no intention of thereafter
assigning or subletting.

        39.3    MULTIPLE OPTIONS. In the event that Lessee has any multiple
Options to extend or renew this Lease, a later Option cannot be exercised unless
the prior Options have been validly exercised.

        39.4    EFFECT OF DEFAULT ON OPTIONS.

               (a) Lessee shall have no right to exercise an Option, (i) during
the period commencing with the giving of any notice of Default and continuing
until said Default is cured; (ii) during the period of time any Rent is unpaid
(without regard to whether notice thereof is given Lessee); (iii) during the
time Lessee is in Breach of this Lease, or (iv) in the event that Lessee has
been given three (3) or more notices of separate Default, whether or not the
Defaults are cured, during the twelve (12) month period immediately preceding
the exercise of the Option.

               (b) The period of time within which an Option may be exercised
shall not be extended or enlarged by reason of Lessee's inability to exercise an
Option because of the provisions of Paragraph 39.4(a).

               (c) An Option shall terminate and be of no further force or
effect, notwithstanding Lessee's due and timely exercise of the Option, if,
after such exercise and prior to the commencement of the extended term, (i)
Lessee fails to pay Rent for a period thirty (30) days after such Rent becomes
due (without any necessity of Lessor to give notice thereof), (ii) Lessor gives
to Lessee three (3) or more notices of separate Default during any twelve
(12)-month period, whether or not the Defaults are cured, or (iii) if Lessee
commits a Breach of this Lease.

40.     Multiple Buildings. If the Premises are a part of a group of buildings
controlled by Lessor, Lessee agrees that it will observe all reasonable rules
and regulations which Lessor may make from time to time for the management,
safety, and care of said properties, including the care and cleanliness of the
grounds and including the parking, loading and unloading of vehicles, and that
Lessee will pay its fair share of common expenses incurred in connection
therewith.

41.     Security Measures. Lessee hereby acknowledges that the rental payable to
Lessor hereunder does not include the cost of guard service or other security
measures, and that Lessor shall have no obligation whatsoever to provide same.
Lessee assumes all responsibility for the protection of the Premises, Lessee,
its agents and invitees and their property from the acts of third parties.


                                    PAGE 18


<PAGE>   19
42.     Reservations. Lessor reserves to itself the right, from time to time, to
grant, without the consent or joinder of Lessee, such easements, rights and
dedications that Lessor deems necessary, and to cause the recordation of parcel
maps and restrictions, so long as such easements, rights, dedications, maps and
restrictions do not unreasonably interfere with the use of the Premises by
Lessee. Lessee agrees to sign any documents reasonably requested by Lessor to
effectuate any such easement rights, dedication, map or restrictions.

43.     Performance Under Protest. If at any time a dispute shall arise as to
any amount or sum of money to be paid by one Party to the other under the
provisions hereof, the Party against whom the obligation to pay the money is
assorted shall have the right to make payment "under protest" and such payment
shall not be regarded as a voluntary payment and there shall survive the right
on the part of said Party to institute suit for recovery of such sum. If it
shall be adjudged that there was no legal obligation on the part of said Party
to pay such sum or any part thereof, said Party shall be entitled to recover
such sum or so much thereof as it was not legally required to pay.

44.     Authority. If either Party hereto is a corporation, trust, limited
liability company, partnership, or similar entity, each individual executing
this Lease on behalf of such entity represents and warrants that he or she is
duly authorized to execute and deliver this Lease on its behalf. Each party
shall, within thirty (30) days after request, deliver to the other party
satisfactory evidence of such authority.

45.     Conflict. Any conflict between the printed provisions of this Lease and
the typewritten or handwritten provisions shall be controlled by the typewritten
or handwritten provisions.

46.     Offer. Preparation of this Lease by either Party or their agent and
submission of same to the other Party shall not be deemed an offer to lease to
the other Party. This Lease is not intended to be binding until executed and
delivered by all Parties hereto.

47.     Amendments. This Lease may be modified only in writing, signed by the
Parties in interest at the time of the modification. As long as they do not
materially change Lessee's obligations hereunder, Lessee agrees to make such
reasonable non-monetary modifications to this Lease as may be reasonably
required by a Lender in connection with the obtaining of normal financing or
refinancing of the Premises.

48.     Multiple Parties. If more than one person or entity is named herein as
either Lessor or Lessee, such multiple Parties shall have joint and several
responsibility to comply with the terms of this Lease.

49.     Mediation and Arbitration of Disputes. An Addendum requiring the
Mediation and/or the Arbitration of all disputes between the Parties and/or
Brokers arising out of this Lease 1/2 is (R) IS NOT attached to this Lease.


                                    PAGE 19


<PAGE>   20
LESSOR AND LESSEE HAVE CAREFULLY READ AND REVIEWED THIS LEASE AND EACH TERM AND
PROVISION CONTAINED HEREIN, AND BY THE EXECUTION OF THIS LEASE SHOW THEIR
INFORMED AND VOLUNTARY CONSENT THERETO. THE PARTIES HEREBY AGREE THAT, AT THE
TIME THIS LEASE IS EXECUTED, THE TERMS OF THIS LEASE ARE COMMERCIALLY REASONABLE
AND EFFECTUATE THE INTENT AND PURPOSE OF LESSOR AND LESSEE WITH RESPECT TO THE
PREMISES.

ATTENTION: NO REPRESENTATION OR RECOMMENDATION IS MADE BY THE AMERICAN
INDUSTRIAL REAL ESTATE ASSOCIATION OR BY ANY BROKER AS TO THE LEGAL SUFFICIENCY,
LEGAL EFFECT, OR TAX CONSEQUENCES OF THIS LEASE OR THE TRANSACTION TO WHICH IT
RELATES. THE PARTIES ARE URGED TO:

1. SEEK ADVICE OF COUNSEL AS TO THE LEGAL AND TAX CONSEQUENCES OF THIS LEASE.

2. RETAIN APPROPRIATE CONSULTANTS TO REVIEW AND INVESTIGATE THE CONDITION OF THE
PREMISES. SAID INVESTIGATION SHOULD INCLUDE BUT NOT BE LIMITED TO: THE POSSIBLE
PRESENCE OF HAZARDOUS SUBSTANCES, THE ZONING OF THE PREMISES, THE STRUCTURAL
INTEGRITY, THE CONDITION OF THE ROOF AND OPERATING SYSTEMS, AND THE SUITABILITY
OF THE PREMISES FOR LESSEE'S INTENDED USE.

WARNING: IF THE PREMISES IS LOCATED IN A STATE OTHER THAN CALIFORNIA, CERTAIN
PROVISIONS OF THE LEASE MAY NEED TO BE REVISED TO COMPLY WITH THE LAWS OF THE
STATE IN WHICH THE PREMISES IS LOCATED.


The parties hereto have executed this Lease at the place and on the dates
specified above their respective signatures.


<TABLE>
<S>                                      <C>
Executed at:  6/17/98                    Executed at:  Westlake Village
            ------------------------                 --------------------------

on:                                      on:  June 12, 1998
   ---------------------------------        -----------------------------------

By LESSOR:                               By LESSOR:

Robert B. Reingold, Trustee              Accelerated Networks, Inc.
for Reingold Trust #21328                a California corporation
------------------------------------     --------------------------------------

By:  /s/ Robert B. Reingold              By:  /s/ Suresh Nihalani
   ---------------------------------        -----------------------------------

Name Printed:  Robert B. Reingold        Name Printed:  Suresh Nihalani
             -----------------------                  -------------------------

Title:  Trustee                          Title:  President/CEO
      ------------------------------           --------------------------------
By:                                      By:
   ---------------------------------        -----------------------------------

Name Printed:                            Name Printed:

Title:                                   Title:
      ------------------------------           --------------------------------

Address:                                 Address:  31238 Via Colinas, Unit E
        ----------------------------             ------------------------------
                                         Westlake Village, CA  91362
------------------------------------     --------------------------------------

Telephone:  (    )                       Telephone:  (818) 889-8817 Ext. 201
                   -----------------               ----------------------------

Facsimile:  (    )                       Facsimile:  (818) 889-8867
                   -----------------               ----------------------------

Federal ID No.                           Federal ID No.  770442752
              ----------------------                   ------------------------
</TABLE>



NOTE: These forms are often modified to meet changing requirements of law and
industry needs. Always write or call to make sure you are utilizing the most
current form: AMERICAN INDUSTRIAL REAL ESTATE ASSOCIATION, 700 So. Flower
Street, Suite 600, Los Angeles, California 90017. (213) 687-8777. Fax No. (213)
687-8616.


                                    PAGE 20


<PAGE>   21
                                   ADDENDUM TO
                         STANDARD INDUSTRIAL/COMMERCIAL
                           SINGLE TENANT LEASE - GROSS


Dated May 28, 1998 by and between Robert B. Reingold, Trustee for Reingold Trust
#21328 ("lessor") and Accelerated Networks ("Lessee")

50.     Rent Adjustments: The Base Rent as described in Paragraph 1. 5 shall be
increased by three (3%) percent annually during the initial term of the lease
and through any option periods.

51.     Tenant Improvements: (a) Lessee shall at its sole cost and expense cause
to be completed in a good and workmanlike manner, certain specified improvements
on the demised premises, as set forth in Exhibit "A," and subject to the terms
and conditions herein set forth.

        1.      Lessee and/or its contractors and/or subcontractors shall obtain
                all necessary building permits that are necessary or required by
                Building and Safety Codes, at Lessee's sole cost and expense.

        2.      All costs, expenses and disbursements for the improvements shall
                be made through "Builder's Control" or guaranteed by Completion
                Bond as specified in paragraph 7.3(b) of the Lease.

        3.      Upon completion of all specified improvements in accordance with
                Code, and payment of all bills in connection with work performed
                and materials furnished, Lessor shall issue credit to Lessee of
                an amount equal to 50% of total work performed and materials
                furnished by Lessee up to a total sum of $100,000.00, of which
                the total rent credit shall not exceed the sum of $50,000.00.
                Thus, by way of example, if the total cost of the work performed
                is $80,000.00, the rent credit shall be $40,000.00; if the total
                work performed is $120,000.00, the rent credit shall
                nevertheless be $50,000.00. Said credit shall be for the second,
                third and fourth months of the lease, based upon the paid
                receipts for bills presented to Lessor.

               (b) Lessor hereby approves the following scope of tenant
improvement work. It is agreed and understood by both parties that the following
scope of tenant improvement work can be modified by Lessee prior to or
immediately following the execution of the lease by both parties. Any
modifications to the following scope of tenant improvement work shall be subject
to Lessor approval which will not be unreasonably withheld.


                1.      New carpet (or vinyl flooring as needed) including new
                        baseboard. (Color to be the choice of Lessee).

                2.      Paint the interior Premises (Except that vinyl wallpaper
                        to remain).

                3.      Replace broken or discolored ceiling tiles existing at
                        the time of work commencement, as part of the initial
                        improvement work.

                4.      Clean Premises throughout including windows, blinds,
                        duct and light lenses.

                5.      Install a roll-up entrance with a ramp on the northerly
                        exterior wall of the building to create access form the
                        rear parking area.

                6.      Remove two walls (in Lunch Room and Production Room),
                        relocate wall with a door in Lunch Room as shown on the
                        attached Exhibit "A".

                7.      Remove wall and wood floor in Dining Room/Conference
                        Room on 2nd floor as shown on the attached Exhibit "A."

                8.      Lessor to deliver all existing electrical outlets;
                        lighting; plumbing fixtures in restrooms and kitchen
                        areas; interior and exterior doors; and elevator in good
                        working order.

                9.      Add wall and door to create office on 1st floor
                        (southwest corner).

                10.     Install two doors in area adjacent to reception and one
                        door in storage room on 1st floor.

                11.     Remove wall and door on 2nd floor (southwest corner).

                12.     Modify electrical power and HVAC distribution as needed.

                13.     Remove raised floor, half wall, ramp, demising wall and
                        door in Computer Room.

                14.     Sound-proof walls on second floor.

               (c) Lessee shall obtain three (3) contractor bids for
improvements, one of which shall be selected by Lessor. Lessee shall have the
right to select the contractor to construct the tenant improvements, subject to
Lessor's written approval which shall not be unreasonably withheld. However,
Lessor's lack of response within 48 hours of Lessee's submission shall be
construed as acceptance of approval by Lessor.

               (d) All bids for tenant improvements must be submitted to Lessor.

               (e) Lessee shall use its best efforts to complete all tenant
improvements by the commencement date and all bills shall be paid prior to any
rent credits.

               (f) Upon completion, Lessee shall deliver to Lessor an "As Built"
set of plans.


<PAGE>   22
52.     Security Deposit: Provided Lessee is in compliance with all terms of the
lease agreement, including not being late on rent by more than five (5) days,
more than three times during the initial lease term, then two of the three
month's security deposit shall be applied to months 35 and 36 of the lease term.
Base rent shown in Paragraph 1.5 has been reduced by $200.00/month in lieu of
any interest to Lessee on security deposit.

53.     Option to Renew: Lessee shall have two one (1) year options to renew the
lease. The rental rate shall continue to increase at 3% per annum. Notice of
intent to exercise each option must be to the Landlord, c/o Equity Commercial,
by certified mail no later than five (5) months prior to the start date of each
option.

54.     Lessor Obligations: Lessor shall pay all real estate taxes, building
insurance, HVAC, and landscape maintenance (with the exception of water).

55.     Other Repair and Maintenance: Lessor shall deliver the building with
plumbing, elevator and electrical systems in good working order. Lessee shall be
responsible to maintain and keep in good repair, those systems and any other
maintenance not specifically stated as Lessor's responsibility. Not withstanding
Paragraph 7.2, Lessor shall be totally responsible for replacement in the event
of failure of a major component of the plumbing, fire sprinkler, irrigation,
electrical, or elevator systems, provided failure is due to normal use and not
negligence or abuse by Lessee.

56.     HVAC: Lessor shall provide Lessee with an HVAC system which provides
climate controlled premises. Heating and air conditioning is provided via a
roof-mounted central variable air volume (VAV) system with individual thermostat
controls for office areas. However, Lessee should verify for themselves the
adequacy of the system for their specific use.

57.     Roof, HVAC and Light Bulbs: Not withstanding Paragraphs, 2.2 and 7.
1(c), Lessor shall be responsible for the maintenance of the roof and HVAC
systems. Lessor, at Lessor's expense will replace all burned out light bulbs
prior to the lease commencement date. Lessee shall be responsible for replacing
any future burned out light bulbs following the lease commencement date.

58.     Parking: Lessee shall be entitled to all the existing parking spaces
located in the parking lot of the property, free of charge throughout the lease
term.

59.     Building Operating & Tax Expenses: Lessee shall pay its pro rata share
of any increase in the building operating and tax expenses, predicated on a 1999
base year. Operating and tax expenses shall not exceed five percent (5%)
increase over the previous year.

60.     Real Property Taxes: Lessee shall not pay any increase in property taxes
due to Lessor's sale, refinance reassessment, or title transfer which may give
rise to an increase in property taxes.

61.     Signage: Lessee shall be allowed to install Lessee's name on the
entrance door (stencil letters), and "Top Building" signage on the building
facade. All signage shall be at Lessee's cost and subject to Lessor's and City
of Moorpark's approval, if applicable. Lessee, at Lessee's sole cost, shall
remove said signage and repair any damage done to the facade at the end of the
lease term.

62.     Hazardous Materials: Lessor is aware of no known toxic and/or hazardous
materials on the site or in the building, (See Paragraph 6.2(e).)

63.     ADA Requirements: Lessor shall be responsible for bringing the building
into compliance with the Americans with Disabilities Act. Any modifications
required by said Act shall be the sole responsibility of the Lessor.

64.     ARBITRATION OF DISPUTES.

        EXCEPT AS OTHERWISE HEREAFTER EXPRESSLY PROVIDED, ANY DISPUTE,
CONTROVERSY, ACTION OR CLAIM BETWEEN OR AMONG LESSOR, LESSEE, AGENT AND/OR
COOPERATING BROKER, OR ANY OF THEM, JOINTLY OR SEVERALLY, ARISING UNDER, OUT OF,
OR IN CONNECTION WITH THIS LEASE AGREEMENT, INCLUDING BUT NOT LIMITED TO THE
INTERPRETATION, ENFORCEMENT OR BREACH OF ANY OF THE PROVISIONS HEREIN CONTAINED;
AND/OR ANY ALLEGED OR PURPORTED MISFEASANCE, MALFEASANCE RELATING TO THE DEMISED
PREMISES; AND/OR ANY ALLEGED OR PURPORTED NEGLIGENT OR INTENTIONAL ACTS, CONDUCT
OR OMISSIONS RELATING TO THE WITHIN AGREEMENT OR THE DEMISED PREMISES, BY EITHER
PARTY HERETO, AND/OR THEIR AGENTS, SERVANTS AND EMPLOYEES, SHALL BE DETERMINED
BY BINDING ARBITRATION TO BE CONDUCTED BY THE AMERICAN ARBITRATION ASSOCIATION
UNDER AND IN ACCORDANCE WITH THE COMMERCIAL RULES OF SUCH ASSOCIATION. HEARINGS
ON SUCH ARBITRATION SHALL BE HELD IN THE COUNTY WHERE THE PROPERTY IS LOCATED.
THE PREVAILING PARTY IN THE ARBITRATION PROCEEDING SHALL BE ENTITLED TO RECOVER
ITS EXPENSES, INCLUDING THE COSTS OF THE ARBITRATION PROCEEDING, AND REASONABLE
ATTORNEYS FEES.

        NOTWITHSTANDING THE FOREGOING, NOTHING HEREINABOVE PROVIDED SHALL
PRECLUDE LESSOR FROM SERVING TENANT WITH A THREE-DAY NOTICE TO PAY RENT, OR FOR
THE COMMISSION OF WASTE, OR MAINTENANCE OR COMMISSION OF A NUISANCE ON THE
DEMISED PREMISES; AND TO THEREAFTER FILE AN UNLAWFUL DETAINER ACTION IN A COURT
OF COMPETENT JURISDICTION. THE FILING OR COMMENCEMENT OF SUCH PROCEEDINGS SHALL
NOT BE CONSTRUED AS A WAIVER OF ANY OF THE MATTERS SUBJECT TO ARBITRATION AS
HEREINABOVE PROVIDED. IN THE EVENT OF THE FILING OF SUCH ACTION FOR UNLAWFUL
DETAINER, THE ATTORNEYS FEE PROVISION IN PARAGRAPH 31 HEREINABOVE SHALL BE
APPLICABLE.


<PAGE>   23
        NOTICE: BY SIGNING IN THE SPACE BELOW YOU ARE AGREEING TO HAVE ANY
DISPUTE ARISING OUT OF THE MATTERS INCLUDED IN THE "ARBITRATION OF DISPUTES"
PROVISION DECIDED BY NEUTRAL ARBITRATION AS PROVIDED BY CALIFORNIA LAW AND YOU
ARE GIVING UP ANY RIGHTS YOU MIGHT POSSESS TO HAVE THE DISPUTE LITIGATED IN A
COURT OR JURY TRIAL. BY SIGNING IN THE SPACE BELOW YOU ARE GIVING UP YOUR
JUDICIAL RIGHTS TO DISCOVERY AND APPEAL, UNLESS THOSE RIGHTS ARE SPECIFICALLY
INCLUDED IN THE "ARBITRATION OF DISPUTES" PROVISION. IF YOU REFUSE TO SUBMIT TO
ARBITRATION AFTER AGREEING TO THIS PROVISION, YOU MAY BE COMPELLED TO ARBITRATE
UNDER THE AUTHORITY OF THE, CALIFORNIA CODE OF CIVIL PROCEDURE. YOUR AGREEMENT
TO THIS ARBITRATION PROVISION IS VOLUNTARY.

        WE HAVE READ AND UNDERSTAND THE FOREGOING AND AGREE TO SUBMIT DISPUTES
ARISING OUT OF THE MATTERS INCLUDED IN THE "ARBITRATION OF DISPUTES" PROVISION
TO NEUTRAL ARBITRATION.

/s/ Robert J. Reingold                   /s/ Suresh Nihalani
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Lessor Signature                         Lessee Signature
Lessor:                                  Lessee:
ROBERT B. REINGOLD,                      ACCELERATED NETWORKS, INC.
TRUSTEE FOR REINGOLD TRUST #21328        A CALIFORNIA CORPORATION

/s/ Robert J. Reingold      6/17/98      /s/ SURSH NIHALANI          6/12/98
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Robert B. Reingold, Trustee   Date       Suresh Nihalani, President/CEO   Date