Document:

<PAGE>   1
                                                                    EXHIBIT 10.8

                        AMENDMENT TO EMPLOYMENT AGREEMENT

      This Amendment ("Amendment") is made and entered into as of the 2nd day of
April, 1998, by and between Masimo Corporation, a Delaware corporation (the
"Company") and Mohamed Diab (the "Executive"), and shall amend that certain
Employment Agreement between the parties dated May 4,1996 (the "Masimo
Agreement").

                                    RECITALS

      A.    The Company intends to spin-off its non-vital signs monitoring
applications (the "Spin-Off") through a stock dividend whereby the Company will
form a new Delaware subsidiary corporation, Masimo Laboratories, Inc. ("Labs"),
that will initially have outstanding one class of stock (the "Labs Common
Stock") and no preferred stock, and will subsequently distribute the Labs Common
Stock to the holders of all of the outstanding shares of the Company's
Common Stock, Series  A Preferred Stock, Series B Preferred Stock, Series C
Preferred Stock, Series D Preferred Stock and Series E Preferred Stock, in each
case on a share for share basis.

      B.    The Company and Labs anticipate that Executive's services as Chief
Technical Officer of the Company and of Labs will be necessary in order for each
company to be successful. Labs is prepared to enter into an Employment Agreement
with Executive (the "Labs Agreement") on substantially the same terms as the
Masimo Agreement. The Company and Labs intend for Executive's total Base Salary
(as defined in the Masimo Agreement) paid by the Company and Labs to approximate
the Base Salary set forth in the Masimo Agreement, rather than double the Base
Salary set forth in the Masimo Agreement.

      NOW, THEREFORE, in consideration of the premises, the mutual covenants and
agreements hereinafter set forth, the Company and the Executive hereby agree as
follows:

      1.    Executive shall be permitted to accept employment from Labs and
Executive shall devote substantially all of his full business and professional
time and energy to the business affairs of the Company and Labs.

      2.    All Base Salary provided by the Masimo Agreement shall be reduced by
the Base Salary paid to Executive pursuant to the Labs Agreement.

      3.    All other terms and conditions of the Masimo Agreement shall remain
in effect.

<PAGE>   2

      IN WITNESS WHEREOF, the Company, at the direction of the Board, and the
Executive have caused this Amendment to be executed as of the day and year first
above written.

                                      "Company"

                                      MASIMO CORPORATION

                                      By:  /s/ BRADLEY R. LANGDALE
                                         --------------------------------------
                                      Its:
                                          -------------------------------------
                                     "Executive"

                                     /s/  MOHAMED DIAB
                                     -------------------------------------------
                                          Mohamed Diab

                                        2<PAGE>   1
                                                                    EXHIBIT 10.9

    [LOGO]        AMERICAN INDUSTRIAL REAL ESTATE ASSOCIATION

           STANDARD INDUSTRIAL/COMMERCIAL SINGLE-TENANT LEASE -- NET
                (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,
April 25, 1997, is made by and between HOFFMAN ASSOCIATES NO. 5, a California
limited partnership ("LESSOR")and MASIMO CORPORATION, a Delaware 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 2852 Kelvin Avenue, Irvine, CA 92614, located in the County of Orange,
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) 29,162 sq. ft. general purpose office and warehouse building,
located on 77,226 sq. ft. of land more particularly described on Exhibit A
attached hereto ("PREMISES"). (See also Paragraph 2)

     1.3  TERM: 5 years and 1 months ("ORIGINAL TERM") commencing May 1, 1997
("COMMENCEMENT DATE") and ending May 31, 2002 ("EXPIRATION DATE"). (See also
Paragraph 3)

     1.4  EARLY POSSESSION: May 1, 1997 through May 31, 1997 ("EARLY POSSESSION
DATE"). (See also Paragraphs 3.2 and 3.3)

     1.5  BASE RENT: $20,413.00 per month ("BASE RENT"), payable on the 1st day
of each month commencing  See Addendum. (See also Paragraph 4)

[X]  If this box is checked, there are provisions in this Lease for the Base
     Rent to be adjusted.

     1.6  BASE RENT PAID UPON EXECUTION: $20,413.00 as Base Rent for the period
June 1, 1997 through June 30, 1997 (as adjusted per Paragraph 1.5).

     1.7  SECURITY DEPOSIT: $20,413.00 ("SECURITY DEPOSIT"). (See also
Paragraph 5)

     1.8  AGREED USE: General office, sales, research and development,
production and warehousing of medical equipment within City of Irvine
zoning/code restrictions. (See also Paragraph 6)

     1.9  INSURING PARTY: Lessee is the "INSURING PARTY" unless otherwise
stated herein. (See also Paragraph 8) See Addendum

     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] CB COMMERCIAL REAL ESTATE GROUP/Dave Desper and Chip Wright represents
    Lessor exclusively ("LESSOR'S BROKER");

[X] GRUBB & ELLIS - Stan Mullin represents Lessee exclusively ("LESSEE'S
    BROKER"); or

[ ] _________________________ represents both Lessor and Lessee ("DUAL AGENCY").

          (b) PAYMENT TO BROKERS: Upon execution and delivery of this Lease by
both Parties, and Lessee occupancy and the start of rental payment by Lessee,
Lessor shall pay to the Broker the fee agreed to in the Listing agreement (or if
there is no such agreement, the sum of 5% of the total Base Rent for the
brokerage services rendered by said Broker).

     1.11 GUARANTOR. The obligations of the Lessee under this Lease are to
be guaranteed by Not applicable ("GUARANTOR"). (See also Paragraph 37)

     1.12 ADDENDA AND EXHIBITS. Attached hereto is an Addendum or Addenda
consisting of Paragraphs 1.5 through 53 and Exhibits A (Legal Description), B
(Letter of Credit), C (Lessor's Work), D (Lessee's Work), 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 to Lessee broom clean and
free of debris on the Commencement Date or the Early Possession Date, whichever
first occurs ("START DATE"), and, so long as the required service contracts
described in Paragraph 7.1(b) below are obtained by Lessee within thirty (30)
days following the Start Date, 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 in the Premises,
other than those constructed by Lessee, shall be in good operating condition on
Start Date and that the structural elements of the roof, 2nd floor, bearing
walls and foundation of any buildings on the Premises (the "BUILDING") shall be
free of material defects and shall be in a water-tight condition. If a
non-compliance with said warranty exists as of the Start Date, Lessor shall, as
Lessor's sole obligation with respect to such matter, 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 Rent Commencement Date, Lessee
does not give Lessor written notice of any non-compliance with this warranty
within: (i) one year as to the surface of the roof, (ii) six (6) months as to
the HVAC systems, (iii) 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.

     2.3  COMPLIANCE. Lessor warrants that the 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 Rent
Commencement 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 an 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:

                                     PAGE 1
<PAGE>   2
          (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.

          (b) Subject to Paragraph 2.3(c) below, 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, or 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  ACKNOWLEDGEMENTS. 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 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.

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
(including, but not limited to, the obligations to pay Real Property Taxes and
insurance premiums and to maintain the Premises) shall, however, be in effect on
the Commencement Date. 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 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 within ten (10) days after the
end of such 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.

     3.4  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 including, without limitation, insurance premiums and real
property taxes, (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. See Addendum.

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. If the Base Rent increases
during the term of this Lease, Lessee shall, upon written request from Lessor,
deposit additional monies with Lessor so that the total amount of the Security
Deposit shall at all times bear the same proportion to the increased Base Rent
as the initial Security Deposit bore to the initial Base Rent. 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. If a change in control of Lessee occurs during this Lease and following
such change the financial condition of Lessee is, in Lessor's reasonable
judgment, significantly reduced, Lessee shall deposit such additional monies
with Lessor as shall be sufficient to cause the Security Deposit to be at a
commercially reasonable level based on said change in financial condition.
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.

                                     PAGE 2
<PAGE>   3

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, is not significantly more burdensome to the
Premises. If 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, 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 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 to concentration levels set forth in the Applicable Requirements or, if
none, to the reasonable satisfaction of Lessor 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, or any third party.

               (d) LESSEE INDEMNIFICATION. Lessee shall indemnify, defend (with
counsel reasonably acceptable to Lessor) and hold Lessor, its agents,
shareholders, 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 reasonable attorneys' and consultants' fees
arising out of or involving any Hazardous Substance brought onto the Premises by
or for Lessee, or any third party (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). 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 to the level set forth in Paragraph 6.2(c) above,
and shall survive the expiration or termination of this Lease. NO TERMINATION,
CANCELLATION OR RELEASE AGREEMENT ENTERED INTO BY LESSOR AND LESSEE SHALL
RELEASE LESSEE 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 (with counsel reasonably acceptable to Lessee),
reimburse and hold Lessee, its agents, directors, shareholders, employees and
lenders, harmless from and against any and all environmental damages, including
without limitation 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, removal or remediation,
restoration and/or abatement measures required by governmental entities having
jurisdiction with respect to the existence of Hazardous Substances on the
Premises prior to the Start Date. Lessee shall cooperate fully in any such
activities at the request of Lessor, including allowing Lessor and Lessor's
agents to have reasonable access to the Premises at reasonable times in order to
carry out Lessor's responsibilities described herein.

               (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
investigation and 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 reasonable 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 upon reasonable prior notice, 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 Lessor, unless a violation of
Applicable Requirements by Lessee, or a contamination caused by Lessee is found
to exist or be imminent, or the inspection is requested or ordered by a
governmental authority (other than inspections relating to any Hazardous
Substance existing in, on, under or about the Premises prior to the Start Date).
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.

                                     PAGE 3
<PAGE>   4
7.      MAINTENANCE; REPAIRS, UTILITY INSTALLATIONS; TRADE FIXTURES AND
        ALTERATIONS.

        7.1     LESSEE'S OBLIGATIONS.

                (a) IN GENERAL. Subject to the provisions of Paragraph 2.2
(Condition), 2.3 (Compliance), 6.3 (Lessee's Compliance with Applicable
Requirements), 7.2 (Lessor's Obligations), 9 (Damage or 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), ceilings,
roofs, floors, windows, doors, plate glass, skylights, landscaping, driveways,
parking lots, fences, signs, sidewalks and parkways located in, on, or adjacent
to the Premises excluding structural elements of the roof, 2nd floor, bearing
walls, and foundation. Lessee, in keeping the Premises in good order, condition
and repair, shall exercise and perform good maintenance practices, specifically
including the procurement and maintenance of the service contracts required by
Paragraph 7.1(b) below. 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 consistent with the
exterior appearance of other similar facilities of comparable age and size in
the vicinity, including, when necessary, the exterior repainting of the
Building.

               (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 equipment and improvements, if any, if and when
installed on the Premises: (i) HVAC equipment, (ii) boiler, and pressure
vessels, (iii) fire extinguishing systems, including fire alarm and/or smoke
detection, (iv) landscaping and irrigation systems, (v) roof covering and
drains, (vi) driveways and parking lots, (vii) clarifiers (viii) basic utility
feed to the perimeter of the Building, and (ix) any other equipment, if
reasonably required by Lessor. See Addendum.

               (c) REPLACEMENT. Subject to Lessee's indemnification of Lessor as
set forth in Paragraph 8.7 below, and without relieving Lessee of liability
resulting from Lessee's failure to exercise and perform good maintenance
practices, if the Basic Elements described in Paragraph 7.1(b) cannot be
repaired other than at a cost which is in excess of 50% of the cost of replacing
such Basic Elements, then such Basic Elements shall be replaced by Lessor, and
the cost thereof shall be prorated between the Parties and Lessee shall only be
obligated to pay, each month during the remainder of the term of this Lease, on
the date on which Base Rent is due, an amount equal to the product of
multiplying the cost of such replacement by a fraction, the numerator of which
is one, and the denominator of which is the number of months of the useful life
of such replacement as such useful life is specified pursuant to Federal income
tax regulations or guidelines for depreciation thereof (including interest on
the unamortized balance as is then commercially reasonable in the judgment of
Lessor's accountants), with Lessee reserving the right to prepay its obligation
at any time.

        7.2     LESSOR'S OBLIGATIONS. Subject to the provisions of Paragraphs
2.2 (Condition), 2.3 (Compliance), 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, all of which obligations are intended to be that of the
Lessee. 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. See
Addendum.

        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,
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 on the
Premises 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
$25,000 in the aggregate or $5,000 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 Alteration or Utility Installation and/or upon Lessee's posting an
additional Security Deposit with Lessor.

               (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 reasonable 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. By delivery to Lessee of written notice from Lessor
not earlier than ninety (90) and not later than thirty (30) days prior to the
end of the term of this Lease, Lessor may require that any or all Lessee Owned
Alterations or Utility Installations be removed by the expiration or termination
of this Lease. 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, parts and surfaces thereof broom clean and free of debris, and in
good operating order, condition and state of repair, ordinary wear and tear
casualty and condemnation, and Lessor's obligations per Paragraph 7.2 hereof
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 to the level set forth in
Paragraph 6.2(c) above 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 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.

                                     PAGE 4
<PAGE>   5

8.      INSURANCE; INDEMNITY.

        8.1     PAYMENT FOR INSURANCE. Lessee shall pay for all insurance
required under Paragraph 8 except to the extent of the cost attributable to
liability insurance carried by Lessor under Paragraph 8.2(b) in excess of
$2,000,000 per occurrence. Premiums for policy periods commencing prior to or
extending beyond the Lease term shall be prorated to correspond to the Lease
term. Payment shall be made by Lessee to Lessor within ten (10) days following
receipt of an invoice.

        8.2     LIABILITY INSURANCE.

                (a) CARRIED BY LESSEE. Lessee shall obtain and keep in force
during the term of this Lease 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 $5,000,000 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 during the term of this lease 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 (except with regard to flood and/or
earthquake insurance) 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), 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. If
such insurance coverage has a deductible clause, the deductible amount shall not
exceed $1,000 per occurrence, and Lessee shall be liable for such deductible
amount in the event of an Insured Loss.

                (b) RENTAL VALUE. The Insuring Party shall obtain and keep in
force during the term of this Lease 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 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. Lessee shall be liable for any deductible
amount in the event of such loss.

        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
Lessee's 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 limits reduced in scope 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 or its employee's or agent's
gross negligence or willful misconduct and/or breach of express warranties
herein, 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, reasonable 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. Except for the negligence or
willful misconduct of Lessor or Lessor's employees or agents, 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. Except
for the gross negligence or willful misconduct of Lessor or Lessor's employees
or agents, Lessor shall under no circumstances be liable for injury to Lessee's
business or for any loss of income or profit therefrom. See Addendum.

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 and
Utility Installations, which can reasonably be repaired in six (6) months or
less from the date of the damage or destruction.

                                     PAGE 5
<PAGE>   6
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 Lessor's 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 (except as to
the deductible which is Lessee's responsibility) 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. If
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
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, but
not to exceed the proceeds received from the Rental Value insurance. 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, or
does not diligently continue making such repair or restoration Lessee may, at
any time prior to the commencement of such repair or restoration, or at any time
after Lessor fails to diligently continue making 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 or is not diligently continued to be made
within thirty (30) days thereafter, this Lease shall terminate as of the date
specified in said notice. If the repair or restoration is commenced or
diligently continued to be made 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

                                     PAGE 6
<PAGE>   7
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. Lessee shall pay the Real Property Taxes
applicable to the Premises during the term of this Lease. Subject to Paragraph
10.2(b), all such payments shall be made at least ten (10) days prior to any
delinquency date. Lessee shall promptly furnish Lessor with satisfactory
evidence that such taxes have been paid. 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, and Lessor shall
reimburse Lessee for any overpayment. If Lessee shall fail to pay any required
Real Property Taxes, Lessor shall have the right to pay the same, and Lessee
shall reimburse Lessor therefor upon demand.

          (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 such taxes be paid in advance to Lessor by Lessee,
either: (i) in a lump sum amount equal to the installment 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 taxes divided by the number of months remaining before
the month in which said installment becomes delinquent. When the actual amount
of the applicable tax bill is known, the amount of such equal monthly advance
payments shall be adjusted as required to provide the funds needed to pay the
applicable taxes. If the amount collected by Lessor is insufficient to pay such
Real Property Taxes when due, Lessee shall pay Lessor, upon demand, such
additional sums as are necessary to pay such obligations. All monies paid to
Lessor under this Paragraph may be intermingled with other monies 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 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.

     10.3 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 on or in the Premises. 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,
telephone, trash disposal and other utilities and services supplied to the
Premises, together with any taxes thereon. If 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 OR 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 thirty percent (30%)
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
thirty percent (30%) 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 Lessor's
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. See
Addendum.

          (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.

          (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 or
ten percent (10%) of the current monthly Base Rent applicable to the portion of
the Premises which is the subject of the proposed assignment or sublease,
whichever is greater, 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. Upon Lessee's
submission of a complete application requesting Lessor's consent hereunder,
Lessor shall respond to such request within 5 business days.

          (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

                                     PAGE 7
<PAGE>   8
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, 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 Tenancy
Statement, (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.

                (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 13.1 (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 13. 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 to 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 the 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 and/or the termination of Lessee's right
to possession shall not relieve Lessee or Lessor from liability

                                     PAGE 8
<PAGE>   9

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 ten percent (10%) 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 four percent (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 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 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.     BROKERS' FEE.

        15.1    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, and/or 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.

                                     PAGE 9
<PAGE>   10

        (c) If Lessor desires to finance, refinance, or sell the Premises, 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.

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 to any default or breach hereof by either Party.

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 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 of 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 monies 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.

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 fifty percent (150%) 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 and 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.

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 "Lessor's 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

                                    PAGE 10
<PAGE>   11

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 upon reasonable prior notice for
the purpose of showing the same to prospective purchasers, lenders, or lessees,
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 except for damage to Lessee's property or employees,
or to the Premises caused by Lessor or Lessor's agents. 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 Addendum.

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
Premises; 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.

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 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 reasonable 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
Tenancy Statement, 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. See Addendum.

        39.1    DEFINITION. "OPTION" shall mean: (a) the right to extend the
term of or renew this Lease.

        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 of 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

                                    PAGE 11
<PAGE>   12
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.

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
asserted 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 [ ] IS  [X] IS NOT attached to this Lease.

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.

Executed at: Pasadena, California        Executed at: Mission Viejo, California
on:          5/5/97                      on:          5/2/97
By LESSOR:                               By LESSEE
HOFFMAN ASSOCIATES NO. 5,                MASIMO CORPORATION,
a California limited partnership         a Delaware corporation

By: Hoffman Associates, Inc.             By:____________________________________
    General Partner                      Name Printed:__________________________
    _________________________________    Title:_________________________________

By: /s/ JAMES J. HAWK                    By: /s/ BRADLEY R. LANGDALE
Name Printed: James J. Hawk              Name Printed: Bradley R. Langdale
Title: President                         Title: Vice President, Finance - CFO
Address: 225 South Lake Avenue,          Address: 23361 Madero, Ste. 100
         Suite 1150                               Mission Viejo, CA 92691
         Pasadena, CA 91101
Telephone: (818) 793-0043                Telephone: (714) 586-6022
Facsimile: (818) 793-0047                Facsimile: (714) 586-4350
Federal ID No. 95-3774288                Federal ID No. 33-0368882

NOTE: These forms are often modified to meet the 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 12
<PAGE>   13
                     ADDENDUM TO LEASE DATED APRIL 25, 1997,
                    BETWEEN HOFFMAN ASSOCIATES NO. 5, LESSOR,
                         AND MASIMO CORPORATION, LESSEE

      The following paragraphs are hereby incorporated by reference into the
Lease and made a part thereof, as though fully set forth therein. To the extent
any of the paragraphs of this Addendum conflict with any preprinted portions of
the Lease, these typed paragraphs of tile Addendum shall control.

      1.5   BASE RENT. June 1, 1997, provided Lessor has delivered possession
of the Premises to Lessee with Lessor's Work (which is more particularly
described on Exhibit C attached hereto) completed as evidenced by a final
inspection card signed by the City of Irvine. A delay in delivery by Lessor will
delay commencement of Base Rent payment an equal number of calendar days.
Certificate of Occupancy application will be the responsibility of Lessee.

      3.2   EARLY POSSESSION. Notwithstanding Paragraphs 1.4 and 3.2 of the
Lease to the contrary, Lessee may take possession of the Premises on May 1,
1997, provided Lessor's Work is completed. However, Lessee may access the
Premises after this Lease is executed by all parties and delivered, for purposes
of completing Lessee's Work, provided: (i) Lessee's access does not interfere
with Lessor's Work, (ii) Lessor has received and approved in writing specific
plans for Lessee's proposed improvements, and (iii) Lessor, at its sole
discretion, controls the schedule and scope of work by Lessee to the extent
necessary to avoid scheduling conflicts. Lessor shall use reasonable efforts to
obtain insurance certificates from Lessor's contractors naming Lessee as an
additional insured.

      4.3   RENT ADJUSTMENT. The monthly Rent for each month of the Lease term
shall be increased as follows: On December 1, 1999, the monthly Rent payable
under Paragraph 1.5 ("Base Rent") of the Lease shall be adjusted by the
increase from the Base Month specified below in the Consumer Price Index of
tile Bureau of Labor Statistics of the U.S. Department of Labor (All Urban
Consumers) for the Los Angeles-Anaheim-Riverside Area, All items (1982-1984 =
100), referred to herein as "CPI." The new monthly Rent shall be calculated as
follows: The Base Rent set forth in Paragraph 1.5 shall be multiplied by a
fraction, the numerator of which shall be the CPI for the month of November,
1999, and the denominator shall be the CPI for the month of May, 1997 ("Base
Month"). The increase shall not be less than 3% nor more than 8% per annum on a
cumulative and compounded basis. The sum so calculated shall constitute the new
monthly Rent hereunder. In the event the compilation and/or publication of the
CPI shall be transferred to any other governmental department, bureau or agency,
or shall be discontinued, then the index most nearly the same as the CPI shall
be used to make such calculation. In the event that Lessor arid Lessee cannot
agree on such alternative index, then the matter shall be submitted for decision
to the American Arbitration Association in accordance with the then rules of
said association and the decision of the arbitrator shall be binding upon the
parties. The cost of said arbitrator shall be paid equally by Lessor and Lessee.

      7.1(b)(1) OBLIGATIONS TO MAINTAIN. Lessee shall, at its expense, on or
before the 30th day of November of each year during the term of this Lease,
deliver evidence reasonably satisfactory to Lessor that the roof of the
Building and the air-conditioning (HVAC) units are in good repair, which
evidence may consist of, but need not be limited to, inspection reports, repair
bills or maintenance agreements. Lessor and Lessee mutually agree that Lessee
shall be responsible for inspection and maintenance costs as required to
maintain the roof and HVAC in good order, condition and repair, and the roof in
a watertight condition. Subject to the description of Lessee's Work set forth in
Exhibit D, Lessee shall not make any

                                   Addendum-1

<PAGE>   14

penetrations of the roof, or add additional equipment to the roof, or make
additions to existing equipment, plumbing or electrical piping or conduit on the
roof, for any reason whatsoever, without Lessor's prior written consent. Any
such roof modification shall require structural engineering plans and sleepers
for anchors with cant strips covered by customary roofing and metal coping caps,
at Lessee's expense. On or before the expiration of the term of the Lease,
Lessee shall, at Lessee's expense, remove old roofing materials and re-roof
modified areas with like quality materials within a two (2) course area around
each roof modification.

      7.2   LESSOR'S OBLIGATIONS. Notwithstanding anything in this Lease to the
contrary, Lessor shall, at Lessor's sole expense, keep in good order, condition
and repair the structural elements of the roof, second floor, bearing walls
(without respect to paint), and foundation.

      8.9   INSURING PARTY. Lessee shall be the Insuring Party and Lessor and
Loss Payee for purposes of all insurance articles under Paragraph 8 shall mean:

      Hoffman Associates No. 5, a California limited partnership, and Hoffman
shall appear as Additional Insured on all Certificates, Insurance Policies and
Endorsements required under this Lease.

      12.1(f) LESSOR'S CONSENT REQUIRED. In the event of an assignment,
subletting or change in control, as defined in Paragraph 12.1 (a)-(d) of the
Lease, Lessee shall pay Lessor fifty percent (50%) of any -amount in excess of
the Lease Rent received from the transferee, as escalated from time to time,
monthly in advance, together with the Rent due under the Lease. Any costs or
expenses incurred by Lessee in connection with such transfer, including, without
limitation, leasing commissions or tenant improvement allowances, shall not be
deducted.

      34.   SIGNS. Signage and method of attachment to the Premises is subject
to Lessor's prior written approval, which shall not be unreasonably withheld.
At the expiration of the Lease or Renewal thereof, any sign, however affixed to
the Premises, shall be removed or, in the case of a painted sign, shall be
painted out, and any building penetrations repaired to the Lessor's reasonable
satisfaction and at the Lessee's expense.

      39.   OPTION TO EXTEND. Lessor hereby grants to Lessee the option to
extend the Lease for one additional sixty (60)-month period, commencing June 1,
2002, upon each and all of the following terms and conditions:

            a.    Lessee gives to Lessor, and Lessor actually receives, on or
after June 1, 2001, and on or before December 1, 2001, a written notice of the
exercise of the option to extend this Lease for said additional term, time being
of the essence. If said notification of the exercise of said option is not so
given and received, the option shall automatically expire.

            b.    The provisions of Paragraph 39.4, including the provision
relating to default of Lessee set forth in Paragraph 39.4 of the Lease, are
conditions to this option.

            c.    All of the terms and condition of the Lease, except where
specifically modified by this option, shall apply.

            d.    The monthly Rent for each month of the option period shall
be calculated as follows: On June 1, 2002, the monthly Rent payable under
Paragraph 1.5 ("Base Rent") of the Lease shall be adjusted to the "Market Rental
Value" of the property as follows:

                                   Addendum-2

<PAGE>   15
                  (1)   On or about February 1, 2002, Lessor and Lessee shall
meet to establish an agreed upon new Market Rental Value for the specified term.
If agreement cannot be reached, then Lessor and Lessee shall immediately appoint
a mutually acceptable appraiser or broker to establish the Market Rental Value
within the next 30 days. Any associated costs will be split equally between the
parties. Alternatively, both Lessor and Lessee shall immediately select and pay
the appraiser or broker of their choice to establish a Market Rental Value
within the next 30 days. If, for any reason, either of the appraisals is not
completed within the next 30 days, as stipulated, then the appraisal that is
completed at that time shall automatically become the new Market Rental Value.
If both appraisals are completed and the two appraisers/brokers cannot agree on
a Market Rental Value, then they shall immediately select a third mutually
acceptable appraiser/broker to establish a third Market Rental Value within the
next 30 days. The average of the two appraisals closest in value shall then
become the new Market Rental Value. The cost of the third party appraiser shall
be equally split between the parties. In any event, the new Market Rental Value
shall not be less than the Rent payable for the month immediately preceding the
date for the last Rent adjustment.

                  (2)   Upon the establishment of the new Market Rental Value:
(a) the monthly Rent sum so calculated shall become tile new "Base Rent" for
the purpose of calculating any further cost of living adjustment as specified
in Paragraph 4.3 hereof; (b) the new Base Rent shall be adjusted on December 1,
2004, in accordance with the provisions of Paragraph 4.3 hereof; and (c) the
month of May, 2002, shall become the new "Base Month" for the purpose of
calculating any further cost of living adjustment as specified in Paragraph 4.3.

      50.   LETTER OF CREDIT. As a material inducement for Lessor to enter into
this Lease, Lessee has delivered and made a part of this Lease, in the form as
set forth in Exhibit B, an unconditional letter of credit ("LOC") equal to
twelve (12) months of Rent, taxes and insurance issued by a bank ("Bank")
satisfactory to Lessor. Terms of the LOC provide for the payment by Bank to
Lessor, on sight demand, all or a partial draw against the LOC to satisfy any
monetary Lease Breach by Lessee. If two consecutive or non-consecutive monetary
Breaches occur, the full balance of tile LOC may be drawn down. If Lessee does
not reinstate the LOC to its original balance within thirty (30) days of a draw
down, Lessee will be deemed in Breach and all remedies under the Lease will be
available to the Lessor.

            If at the end of the first Lease Commencement anniversary date,
Lessee's income is not equal to or greater than the income before provisions for
income tax at December 31, 1996, as computed for the SEC Form 10-QSB or
equivalent, the LOC will be extended by Lessee for one (1) additional year.

      51.   TENANT IMPROVEMENTS. Premises will be delivered by Lessor in ADA and
code compliance based on City approved plans of January 23, 1997, and April 9,
1997, and ready for construction of Lessee's Work. If Lessee's use requires
modifications to the property, then such related costs shall be the sole
responsibility of Lessee.

            The Building Allowance will include up to $22,315.00 for floor
covering, and $10,000.00 ($.60/sq. ft.) for existing office area floor plan
changes, including side lights in certain office walls, but excluding
electrical. Lessee may choose the floor covering. The cost of the finish
interior paint is included in Lessor's Work. Lessor shall reimburse Lessee for
such costs, not to exceed the Building Allowance, within fifteen (15) calendar
days after completion of the work and the delivery to Lessor of a notice of
completion, final lien releases, and copies of invoices or bills.

                                   Addendum-3

<PAGE>   16
            In addition to the foregoing, Lessor shall reimburse Lessee
promptly, upon written request therefor from Lessee following commencement of
rent payment by Lessee, for allowances or credits in connection with the
following: (i) pulling 3-line standard telephone wire from each office to the
telephone room - $1,276; and (ii) concrete veneer pour in the entry lobby -
$850.

            Lessee will obtain Lessor's prior written approval of all proposed
improvements to be installed on the Premises. As well, Lessee's work will not
materially interfere with work being done by Lessor. The Lessee does plan to use
Lundstrom & Associates to design the improvements and will use Dennis Allison
to select a bonded general contractor and engineers.

            Notwithstanding anything to the contrary in this Lease, Lessor
approves Lessee's proposed scope of work for tenant improvements, which are more
particularly described on Exhibit D attached hereto ("Lessee's Work"), subject
to Lessor's approval of specific plans and specifications relating to Lessee's
Work ("Specific Plans and Specifications"), which approval shall not be
unreasonably withheld. Lessor shall have the right to approve, disapprove or
request reasonable modifications to such Specific Plans and Specifications
within five (5) business days after Lessor's receipt thereof. Lessor's failure
to respond within such period shall be deemed Lessor's disapproval of Lessee's
Specific Plans and Specifications.

            Without Lessor's prior written approval of specific plans and
specifications, Lessee's improvements of whatever nature or form will not: (i)
set upon, penetrate, alter or remove the roof or any components thereof or
thereon; or (ii) alter in any way the mechanical, electrical or plumbing of the
Premises.

      52.   PARKING. Lessee shall have the right to use up to 119 automobile
spaces on the Premises during the term of the Lease and any extensions or
renewals thereof at no charge to Lessee.

      53.   LESSOR'S INDEMNITY. Lessor and its successors and assigns shall
indemnify, protect, defend (with counsel reasonably acceptable to Lessee) and
hold harmless Lessee and its employees and agents from and against any and all
claims, liabilities, losses, costs or expenses (including reasonable attorneys'
fees) arising from any (i) negligence or willful misconduct of Lessor or
Lessor's employees, agents or consultants (but excluding contractors); and (ii)
any Breach of Lessor in the performance of an obligation on Lessor's part to be
performed under the Lease.

HOFFMAN ASSOCIATES NO. 5,                    MASIMO CORPORATION,
a California limited partnership             a Delaware corporation

By: Hoffman Associates, Inc.
     General Partner

By: /s/ JAMES J. HAWK                        By: /s/ BRADLEY R. LANGDALE
    ---------------------------------            ------------------------------
    James J. Hawk, President                     Bradley R. Langdale
                                                 Vice President, Finance - CFO

Date:    5/5/97                              Date:        5/2/97
     -------------------------------              ----------------------------

                                   Addendum-4
<PAGE>   17
                                     [LOGO]

                           PROPERTY INFORMATION SHEET
                               (Non-Residential)

                  AMERICAN INDUSTRIAL REAL ESTATE ASSOCIATION

TO WHOM IT MAY CONCERN:

Hoffman Associates No. 5, a California Limited Partnership ("Owner"), owns the
property commonly known by the street address of 2852 Kelvin Avenue, located in
the City of Irvine, County of Orange, State of California, and generally
described as (describe briefly the nature of the property) a free-standing
concrete tilt-up facility consisting of approximately 29,162 SF of office and
warehouse space on 77,226 SF of land ("Property"), and certifies that:

1. MATERIAL PHYSICAL DEFECTS. Owner has no actual knowledge of any material
physical defects in the Property or any improvements and structures thereon,
including, but not limited to the roof, except (it will be assumed no known
exceptions exist unless they are specified here):

   None.

2. EQUIPMENT. Owner has no actual knowledge that the heating, ventilating, air
conditioning, plumbing, loading doors, electrical and lighting systems, life
safety systems and mechanical equipment existing on the Property as of the date
hereof, if any, are not in good operating order and condition, except (it will
be assumed no known exceptions exist unless they are specified here):

   None.

3. SOIL CONDITIONS. Owner has no actual knowledge that the Property has any
slipping, sliding, settling, flooding, ponding or any other grading, drainage or
soil problems, except (it will be assumed no known exceptions exist unless they
are specified here):

   None.

4. SEWER. Owner represents and warrants that the Property is served by a (check
the appropriate box) [X] public sewer system  [ ] private septic system, and
that, if the Property is served by a public sewer system, the cost of
installation of such sewer system has been fully paid, except (it will be
assumed no known exceptions exist unless they are specified here):

   ___________.

5. EARTHQUAKE ZONE. If the Property is located in the State of California, Owner
has no actual knowledge that the Property is located within a delineated special
studies zone (a zone that encompasses a potentially or recently active trace of
an earthquake fault that is deemed by the state geologist to be sufficiently
active and well defined enough to constitute a potential hazard to structures
from surface fault or fault creep) under a Alquist-Priolo Special Studies Zone
Map, except (it will be assumed no known exceptions exist unless they are
specified here):

   We are not in an earthquake zone.

6. COMPLIANCE WITH LAWS. Owner has no actual knowledge of any aspect or
condition of the Property which violates applicable laws, rules, regulations,
codes, or covenants, conditions or restrictions, or of improvements or
alterations made to the Property without a permit where one was required, or of
any unfulfilled order or directive of any applicable government agency or of any
casualty insurance company that any work of investigation, remediation, repair,
maintenance or improvement is to be performed on the Property, except (it will
be assumed no known exceptions exist unless they are specified here):

   None.

7. HAZARDOUS SUBSTANCES. Owner has no actual knowledge of the current existence
on the Property of asbestos, PCB transformers or any hazardous, toxic or
infectious substances whose nature and/or quantity of existence, use,
manufacture or effect, render it subject of Federal, state or local regulation,
investigation, remediation or removal as potentially injurious to public health
or welfare, except (it will be assumed no known exceptions exist unless they are
specified here):

   Please see Environmental Assessment Reports dated October 6, 1994 and
   December 10, 1996, and Asbestos Survey dated December 10, 1996, sent to
   Masimo Corporation on April 9, 1997.

                                     PAGE 1

<PAGE>   18
     8.   STORAGE TANKS. Owner has no actual knowledge of the past or present
existence of any above or below ground storage tank or tanks on the Property,
except (it will be assumed no known exceptions exist unless they are specified
here):

          None.

     9.   ACTIONS, SUITS OR PROCEEDINGS. Owner has no actual knowledge that any
actions, suits or proceedings are pending or threatened before any court,
arbitration tribunal, governmental department, commission, board, bureau,
agency or instrumentality that would affect the Property or the right or
ability of an owner or tenant to convey, occupy or utilize the Property, except
(it will be assumed no known exceptions exist unless they are specified here):

          None.

    10.   GOVERNMENTAL PROCEEDINGS. Owner has no actual knowledge of any
existing or contemplated condemnation, environmental, zoning, redevelopment
agency plan or other land use regulation proceedings which could
detrimentally affect the value, use and operation of the Property, except (it
will be assumed no known exceptions exist unless they are specified here):

          None.

    11.   UNRECORDED AND RECORDED TITLE MATTERS. Owner has no actual knowledge
of any encumbrances, covenants, conditions, restrictions, easements, licenses,
liens, charges or other matters which affect the title of the Property
that are not recorded in the official records of the county recorder where the
Property is located, except (it will be assumed no known exceptions exist
unless they are specified here):

          As set forth on Exhibit A attached hereto.

    12.   LEASES. Owner has no actual knowledge of any leases, subleases or
other tenancy agreements affecting the Property, except (it will be assumed no
known exceptions exist unless they are specified here):

          None.

     Owner's statements herein will be relied upon by brokers, buyers,
lessees, lenders and others. Therefore, Owner has reviewed and modified this
printed statement as necessary to accurately and completely state all the known
and material facts concerning the Property. To the extent such modifications
are not made, this statement may be relied upon as printed. This statement,
however, shall not relieve a buyer or lessee of responsibility for independent
investigation of the Property. Owner agrees to promptly notify, in writing, all
appropriate parties of any material changes which may occur in the statements
contained herein from the date this statement is signed until title to the
Property is transferred, by a recorded deed, by Owner.

                                                           "OWNER"

Date:          April 25, 1997                HOFFMAN ASSOCIATES NO. 5,
      -------------------------------        a California Limited Partnership
        (Fill in date of execution)
                                             By: Hoffman Associates, Inc., G.P.
                                                --------------------------------

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

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

                                             By: /s/ JAMES J. HAWK
                                                --------------------------------

                                             Name Printed:  James J. Hawk
                                                          ----------------------

                                             Title:  President
                                                   -----------------------------

NOTICE: 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, 345 South Figueroa
Street, Suite M-1, Los Angeles, CA 90071, Telephone No.: (213) 687-8777. Fax
No.: (213) 687-8616.

                                     Page 2
<PAGE>   19
                                     NOTICE

     An environmental consultant was retained to assess and identify the
existence of asbestos-containing materials in property commonly known as 2852
Kelvin Avenue, Irvine, California 92714. As a result of that investigation, the
existence of asbestos was noted in some areas of the structure, specifically the
following:

     1. Twelve inch tan with black streaks vinyl floor tile (VFT) black mastic
        (trace chrysotile) located in the north portion of the rear of the
        building;

     2. Twelve inch gray with brown and white streaks (VFT) black mastic (trace
        chrysotile) located in the northeast portion of the rear of the
        building;

     3. Drywall/tape/compound (trace chrysotile) located in the office in the
        southwest portion of the lab area of the building and the office walls
        of the hallway and two rooms in the southwest portion of the first floor
        of the building;

     4. Twelve inch white (VFT) black mastic (trace chrysotile) located in the
        stock room lab west of the men's restroom on the first floor of the
        building; and

     5. Sprayed/applied acoustical ceiling material located in the office
        hallway extending to the lab area and the lower flight of stairs on the
        first floor of the building.

     The asbestos in the areas referenced in the items 1 through 4 and the
office hallway section referred to in item 5 above was removed by a certified
asbestos abatement contractor. Drywall/tape/compound materials in office walls
referenced in 3. above, and acoustical ceiling material referenced in 5. above,
are encapsulated and deemed manageable in place. Copies of the original
Comprehensive Asbestos Survey dated December 10, 1996, and the certification of
removal of asbestos-containing materials from certain areas as referenced above,
are available upon request.

     You, as tenant/lessee of the above-described property, shall not undertake
any work in or immediately adjacent to the areas described above (with respect
to which abatement removal of the asbestos has not occurred), which may cause a
disturbance of asbestos-containing construction materials without prior written
notice to and written approval by the undersigned owner.

     Exposure to airborne asbestos creates potential health risks associated
with breathing such asbestos fibers. Such exposure has been linked to lung
cancer, and less frequently, to cancer of other organs in the body and to
diseases that cause scarring of the lung called asbestosis. Asbestosis is a
restrictive lung disease that reduces the capacity of the lungs.

     Surveys, reports and documentation regarding the asbestos identified at the
property are available at the undersigned owner's offices located at 225 South
Lake Avenue, Suite 1150, Pasadena, California 91101. Such materials are
available for inspection during normal business hours.

     This notification is provided in accordance with current California and
federal laws requiring disclosure of the information contained herein. This
notice does not constitute a representation or warranty concerning the existence
of asbestos and simply reflects the information made known to the undersigned
owner in the reports referenced herein.

Dated: 5/5/97                      HOFFMAN ASSOCIATES NO. 5,
                                   a California Limited Partnership

                                   By: Hoffman Associates, Inc., General Partner

                                   By: /s/ JAMES J. HAWK
                                       -----------------------------------------
                                           James J. Hawk, President

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00014-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00014-of-00352.parquet"}]]