Document:

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                                                                   EXHIBIT 10.13

                                   OMM, INC.

                        2000 EMPLOYEE STOCK PURCHASE PLAN

        The following constitute the provisions of the 2000 Employee Stock
Purchase Plan of OMM, Inc.

        1. Purpose. The purpose of the Plan is to provide employees of the
Company and its Designated Subsidiaries with an opportunity to purchase Common
Stock of the Company through accumulated payroll deductions. It is the intention
of the Company to have the Plan qualify as an "Employee Stock Purchase Plan"
under Section 423 of the Internal Revenue Code of 1986, as amended. The
provisions of the Plan, accordingly, shall be construed so as to extend and
limit participation in a manner consistent with the requirements of that section
of the Code.

        2. Definitions.

               (a) "Board" shall mean the Board of Directors of the Company or
any committee thereof designated by the Board of Directors of the Company in
accordance with Section 14 of the Plan.

               (b) "Code" shall mean the Internal Revenue Code of 1986, as
amended.

               (c) "Common Stock" shall mean the common stock of the Company.

               (d) "Company" shall mean OMM, Inc. and any Designated Subsidiary
of the Company.

               (e) "Compensation" shall mean all base straight time gross
earnings, commissions, overtime and shift premium but shall be exclusive of
payments for incentive compensation, incentive payments, bonuses and other
compensation.

               (f) "Designated Subsidiary" shall mean any Subsidiary that has
been designated by the Board from time to time in its sole discretion as
eligible to participate in the Plan.

               (g) "Employee" shall mean any individual who is an Employee of
the Company for tax purposes whose customary employment with the Company is at
least twenty (20) hours per week and more than five (5) months in any calendar
year. For purposes of the Plan, the employment relationship shall be treated as
continuing intact while the individual is on sick leave or other leave of
absence approved by the Company. Where the period of leave exceeds 90 days and
the individual's right to reemployment is not guaranteed either by statute or by
contract, the employment relationship shall be deemed to have terminated on the
91st day of such leave.

               (h) "Enrollment Date" shall mean the first Trading Day of each
24-Month Offering Period.
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               (i) "Exercise Date" shall mean the last Trading Day of each
Semi-Annual Participation Period.

               (j) "Fair Market Value" shall mean, as of any date, the value of
Common Stock determined as follows:

                          (i) If the Common Stock is listed on any established
stock exchange or a national market system, including without limitation the
Nasdaq National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market,
its Fair Market Value shall be the closing sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such exchange or system for
the last market trading day prior to the date of determination, as reported in
The Wall Street Journal or such other source as the Board deems reliable;

                          (ii) If the Common Stock is regularly quoted by a
recognized securities dealer but selling prices are not reported, its Fair
Market Value shall be the mean of the closing bid and asked prices for the
Common Stock prior to the date of determination, as reported in The Wall Street
Journal or such other source as the Board deems reliable;

                          (iii) In the absence of an established market for the
Common Stock, the Fair Market Value thereof shall be determined in good faith by
the Board; or

                          (iv) For purposes of the Enrollment Date of the first
24-Month Offering Period under the Plan, the Fair Market Value shall be the
initial price to the public as set forth in the final prospectus included within
the registration statement in Form S-1 filed with the Securities and Exchange
Commission for the initial public offering of the Company's Common Stock (the
"Registration Statement").

               (k) "Plan" shall mean this 2000 Employee Stock Purchase Plan.

               (l) "Purchase Price" shall mean 85% of the Fair Market Value of a
share of Common Stock on the Enrollment Date or on the Exercise Date, whichever
is lower; provided however, that the Purchase Price may be adjusted by the Board
pursuant to Section 20.

               (m) "Reserves" shall mean the number of shares of Common Stock
covered by each option under the Plan which have not yet been exercised and the
number of shares of Common Stock which have been authorized for issuance under
the Plan but not yet placed under option.

               (n) "Semi-Annual Participation Period" shall mean the
approximately six month period commencing after one Exercise Date and ending
with the next Exercise Date, except that the first Semi-Annual Participation
Period of any 24-Month Offering Period shall commence on the Enrollment Date and
end with the next Exercise Date; provided, however, that the first Semi-Annual
Participation Period under the Plan shall commence with the first Trading Day on
or after the date on which the Securities and Exchange Commission declares the
Company's Registration Statement effective and end on the last Trading Day on or
before April 30, 2001.

               (o) "Subsidiary" shall mean a corporation, domestic or foreign,
of which not less than 50% of the voting shares are held by the Company or a
Subsidiary, whether or not such corporation now exists or is hereafter organized
or acquired by the Company or a Subsidiary.

                                      -2-

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               (p) "Trading Day" shall mean a day on which national stock
exchanges and the Nasdaq System are open for trading.

               (q) "24-Month Offering Periods" shall mean the periods of
approximately twenty-four (24) months during which an option granted pursuant to
the Plan may be exercised, commencing on the first Trading Day on or after May 1
and November 1 of each year and terminating on the last Trading Day in the
periods ending twenty-four months later; provided, however, that the first
24-Month Offering Period under the Plan shall commence with the first Trading
Day on or after the date on which the Securities and Exchange Commission
declares the Company's Registration Statement effective and end on the last
Trading Day on or before October 31, 2002. The duration and timing of 24-Month
Offering Periods may be changed pursuant to Section 4 of this Plan.

        3. Eligibility.

               (a) Any Employee who shall be employed by the Company on a given
Enrollment Date shall be eligible to participate in the Plan.

               (b) Any provisions of the Plan to the contrary notwithstanding,
no Employee shall be granted an option under the Plan (i) to the extent that,
immediately after the grant, such Employee (or any other person whose stock
would be attributed to such Employee pursuant to Section 424(d) of the Code)
would own capital stock of the Company and/or hold outstanding options to
purchase such stock possessing five percent (5%) or more of the total combined
voting power or value of all classes of the capital stock of the Company or of
any Subsidiary, or (ii) to the extent that his or her rights to purchase stock
under all employee stock purchase plans of the Company and its subsidiaries
accrues at a rate which exceeds Twenty-Five Thousand Dollars ($25,000) worth of
stock (determined at the fair market value of the shares at the time such option
is granted) for each calendar year in which such option is outstanding at any
time.

        4. 24-Month Offering Periods. The Plan shall be implemented by
consecutive, overlapping 24-Month Offering Periods with a new 24-Month Offering
Period commencing on the first Trading Day on or after May 1 and November 1 each
year, or on such other date as the Board shall determine, and continuing
thereafter until terminated in accordance with Section 20 hereof; provided,
however, that the first 24-Month Offering Period under the Plan shall commence
with the first Trading Day on or after the date on which the Securities and
Exchange Commission declares the Company's Registration Statement effective and
ending on the last Trading Day on or before October 31, 2002. The Board shall
have the power to change the duration of 24-Month Offering Periods (including
the commencement dates thereof) with respect to future offerings without
shareholder approval if such change is announced at least five (5) days prior to
the scheduled beginning of the first 24-Month Offering Period to be affected
thereafter.

        5. Participation.

               (a) An eligible Employee may become a participant in the Plan by
completing a subscription agreement authorizing payroll deductions in the form
of Exhibit A to this Plan and filing it with the Company's payroll office prior
to the applicable Enrollment Date.

                                      -3-
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               (b) Payroll deductions for a participant shall commence on the
first payroll following the Enrollment Date and shall end on the last payroll in
the 24-Month Offering Period to which such authorization is applicable, unless
sooner terminated by the participant as provided in Section 10 hereof.

        6. Payroll Deductions.

               (a) At the time a participant files his or her subscription
agreement, he or she shall elect to have payroll deductions made on each pay day
during the 24-Month Offering Period in an amount not exceeding ten percent (10%)
of the Compensation which he or she receives on each pay day during the 24-Month
Offering Period.

               (b) All payroll deductions made for a participant shall be
credited to his or her account under the Plan and shall be withheld in whole
percentages only. A participant may not make any additional payments into such
account.

               (c) A participant may discontinue his or her participation in the
Plan as provided in Section 10 hereof, or may increase or decrease the rate of
his or her payroll deductions during the 24-Month Offering Period by completing
or filing with the Company a new subscription agreement authorizing a change in
payroll deduction rate. The Board may, in its discretion, limit the number of
participation rate changes during any 24-Month Offering Period. The change in
rate shall be effective with the first full payroll period following five (5)
business days after the Company's receipt of the new subscription agreement
unless the Company elects to process a given change in participation more
quickly. A participant's subscription agreement shall remain in effect for
successive 24-Month Offering Periods unless terminated as provided in Section 10
hereof.

               (d) Notwithstanding the foregoing, to the extent necessary to
comply with Section 423(b)(8) of the Code and Section 3(b) hereof, a
participant's payroll deductions may be decreased to zero percent (0%) at any
time during a Semi-Annual Participation Period. Payroll deductions shall
recommence at the rate provided in such participant's subscription agreement at
the beginning of the first Semi-Annual Participation Period which is scheduled
to end in the following calendar year, unless terminated by the participant as
provided in Section 10 hereof.

               (e) At the time the option is exercised, in whole or in part, or
at the time some or all of the Company's Common Stock issued under the Plan is
disposed of, the participant must make adequate provision for the Company's
federal, state, or other tax withholding obligations, if any, which arise upon
the exercise of the option or the disposition of the Common Stock. At any time,
the Company may, but shall not be obligated to, withhold from the participant's
compensation the amount necessary for the Company to meet applicable withholding
obligations, including any withholding required to make available to the Company
any tax deductions or benefits attributable to sale or early disposition of
Common Stock by the Employee.

        7. Grant of Option. On the Enrollment Date of each 24-Month Offering
Period, each eligible Employee participating in such 24-Month Offering Period
shall be granted an option to purchase on each Exercise Date during such
24-Month Offering Period (at the applicable Purchase Price) up to a number of
shares of the Company's Common Stock determined by dividing such Employee's
payroll deductions accumulated prior to such Exercise Date and retained in the

                                      -4-
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Participant's account as of the Exercise Date by the applicable Purchase Price;
provided that in no event shall an Employee be permitted to purchase during each
Semi-Annual Participation Period more than 10,000 shares of the Company's Common
Stock (subject to any adjustment pursuant to Section 19), and provided further
that such purchase shall be subject to the limitations set forth in Sections
3(b) and 12 hereof. The Board may, for future 24-Month Offering Periods,
increase or decrease, in its absolute discretion, the maximum number of shares
of the Company's Common Stock an Employee may purchase during each Semi-Annual
Participation Period of such 24-Month Offering Period. Exercise of the option
shall occur as provided in Section 8 hereof, unless the participant has
withdrawn pursuant to Section 10 hereof. The option shall expire on the last day
of the 24-Month Offering Period.

        8. Exercise of Option.

               (a) Unless a participant withdraws from the Plan as provided in
Section 10 hereof, his or her option for the purchase of shares shall be
exercised automatically on the Exercise Date, and the maximum number of full
shares subject to option shall be purchased for such participant at the
applicable Purchase Price with the accumulated payroll deductions in his or her
account. No fractional shares shall be purchased; any payroll deductions
accumulated in a participant's account which are not sufficient to purchase a
full share shall be retained in the participant's account for the subsequent
Semi-Annual Participation Period or 24-Month Offering Period, subject to earlier
withdrawal by the participant as provided in Section 10 hereof. Any other monies
left over in a participant's account after the Exercise Date shall be returned
to the participant. During a participant's lifetime, a participant's option to
purchase shares hereunder is exercisable only by him or her.

               (b) If the Board determines that, on a given Exercise Date, the
number of shares with respect to which options are to be exercised may exceed
(i) the number of shares of Common Stock that were available for sale under the
Plan on the Enrollment Date of the applicable 24-Month Offering Period, or (ii)
the number of shares available for sale under the Plan on such Exercise Date,
the Board may in its sole discretion (x) provide that the Company shall make a
pro rata allocation of the shares of Common Stock available for purchase on such
Enrollment Date or Exercise Date, as applicable, in as uniform a manner as shall
be practicable and as it shall determine in its sole discretion to be equitable
among all participants exercising options to purchase Common Stock on such
Exercise Date, and continue all 24-Month Offering Periods then in effect, or (y)
provide that the Company shall make a pro rata allocation of the shares
available for purchase on such Enrollment Date or Exercise Date, as applicable,
in as uniform a manner as shall be practicable and as it shall determine in its
sole discretion to be equitable among all participants exercising options to
purchase Common Stock on such Exercise Date, and terminate any or all 24-Month
Offering Periods then in effect pursuant to Section 20 hereof. The Company may
make pro rata allocation of the shares available on the Enrollment Date of any
applicable 24-Month Offering Period pursuant to the preceding sentence,
notwithstanding any authorization of additional shares for issuance under the
Plan by the Company's shareholders subsequent to such Enrollment Date.

        9. Delivery. As promptly as practicable after each Exercise Date on
which a purchase of shares occurs, the Company shall arrange the delivery to
each participant, as appropriate, of a certificate representing the shares
purchased upon exercise of his or her option.

                                      -5-
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        10. Withdrawal.

               (a) A participant may withdraw all but not less than all the
payroll deductions credited to his or her account and not yet used to exercise
his or her option under the Plan at any time by giving written notice to the
Company in the form of Exhibit B to this Plan. All of the participant's payroll
deductions credited to his or her account shall be paid to such participant
promptly after receipt of notice of withdrawal and such participant's option for
the 24-Month Offering Period shall be automatically terminated, and no further
payroll deductions for the purchase of shares shall be made for such 24-Month
Offering Period. If a participant withdraws from a 24-Month Offering Period,
payroll deductions shall not resume at the beginning of the succeeding 24-Month
Offering Period unless the participant delivers to the Company a new
subscription agreement.

               (b) A participant's withdrawal from a 24-Month Offering Period
shall not have any effect upon his or her eligibility to participate in any
similar plan which may hereafter be adopted by the Company or in succeeding
24-Month Offering Periods which commence after the termination of the 24-Month
Offering Period from which the participant withdraws.

        11. Termination of Employment.

               Upon a participant's ceasing to be an Employee, for any reason,
he or she shall be deemed to have elected to withdraw from the Plan and the
payroll deductions credited to such participant's account during the 24-Month
Offering Period but not yet used to exercise the option shall be returned to
such participant or, in the case of his or her death, to the person or persons
entitled thereto under Section 15 hereof, and such participant's option shall be
automatically terminated. The preceding sentence notwithstanding, a participant
who receives payment in lieu of notice of termination of employment shall be
treated as continuing to be an Employee for the participant's customary number
of hours per week of employment during the period in which the participant is
subject to such payment in lieu of notice.

        12. Interest. No interest shall accrue on the payroll deductions of a
participant in the Plan.

        13. Stock.

               (a) Subject to adjustment upon changes in capitalization of the
Company as provided in Section 19 hereof, the maximum number of shares of the
Company's Common Stock which shall be made available for sale under the Plan
shall be 4,000,000 shares plus an annual increase to be added on the first day
of the Company's fiscal year beginning in 2002, equal to the lesser of (i)
2,700,000 shares, (ii) 2% of the outstanding shares on such date or (iii) a
lesser amount determined by the Board.

               (b) The participant shall have no interest or voting right in
shares covered by his option until such option has been exercised.

               (c) Shares to be delivered to a participant under the Plan shall
be registered in the name of the participant or in the name of the participant
and his or her spouse.

                                      -6-
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        14. Administration. The Plan shall be administered by the Board or a
committee of members of the Board appointed by the Board. The Board or its
committee shall have full and exclusive discretionary authority to construe,
interpret and apply the terms of the Plan, to determine eligibility and to
adjudicate all disputed claims filed under the Plan. Every finding, decision and
determination made by the Board or its committee shall, to the full extent
permitted by law, be final and binding upon all parties.

        15. Designation of Beneficiary.

               (a) A participant may file a written designation of a beneficiary
who is to receive any shares and cash, if any, from the participant's account
under the Plan in the event of such participant's death subsequent to an
Exercise Date on which the option is exercised but prior to delivery to such
participant of such shares and cash. In addition, a participant may file a
written designation of a beneficiary who is to receive any cash from the
participant's account under the Plan in the event of such participant's death
prior to exercise of the option. If a participant is married and the designated
beneficiary is not the spouse, spousal consent shall be required for such
designation to be effective.

               (b) Such designation of beneficiary may be changed by the
participant at any time by written notice. In the event of the death of a
participant and in the absence of a beneficiary validly designated under the
Plan who is living at the time of such participant's death, the Company shall
deliver such shares and/or cash to the executor or administrator of the estate
of the participant, or if no such executor or administrator has been appointed
(to the knowledge of the Company), the Company, in its discretion, may deliver
such shares and/or cash to the spouse or to any one or more dependents or
relatives of the participant, or if no spouse, dependent or relative is known to
the Company, then to such other person as the Company may designate.

        16. Transferability. Neither payroll deductions credited to a
participant's account nor any rights with regard to the exercise of an option or
to receive shares under the Plan may be assigned, transferred, pledged or
otherwise disposed of in any way (other than by will, the laws of descent and
distribution or as provided in Section 15 hereof) by the participant. Any such
attempt at assignment, transfer, pledge or other disposition shall be without
effect, except that the Company may treat such act as an election to withdraw
funds from a 24-Month Offering Period in accordance with Section 10 hereof.

        17. Use of Funds. All payroll deductions received or held by the Company
under the Plan may be used by the Company for any corporate purpose, and the
Company shall not be obligated to segregate such payroll deductions.

        18. Reports. Individual accounts shall be maintained for each
participant in the Plan. Statements of account shall be given to participating
Employees at least annually, which statements shall set forth the amounts of
payroll deductions, the Purchase Price, the number of shares purchased and the
remaining cash balance, if any.

        19. Adjustments Upon Changes in Capitalization, Dissolution,
Liquidation, Merger or Asset Sale.

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               (a) Changes in Capitalization. Subject to any required action by
the shareholders of the Company, the Reserves, the maximum number of shares each
participant may purchase each Semi-Annual Participation Period (pursuant to
Section 7), as well as the price per share and the number of shares of Common
Stock covered by each option under the Plan which has not yet been exercised
shall be proportionately adjusted for any increase or decrease in the number of
issued shares of Common Stock resulting from a stock split, reverse stock split,
stock dividend, combination or reclassification of the Common Stock, or any
other increase or decrease in the number of shares of Common Stock effected
without receipt of consideration by the Company; provided, however, that
conversion of any convertible securities of the Company shall not be deemed to
have been "effected without receipt of consideration." Such adjustment shall be
made by the Board, whose determination in that respect shall be final, binding
and conclusive. Except as expressly provided herein, no issuance by the Company
of shares of stock of any class, or securities convertible into shares of stock
of any class, shall affect, and no adjustment by reason thereof shall be made
with respect to, the number or price of shares of Common Stock subject to an
option.

               (b) Dissolution or Liquidation. In the event of the proposed
dissolution or liquidation of the Company, the 24-Month Offering Period then in
progress shall be shortened by setting a new Exercise Date (the "New Exercise
Date"), and shall terminate immediately prior to the consummation of such
proposed dissolution or liquidation, unless provided otherwise by the Board. The
New Exercise Date shall be before the date of the Company's proposed dissolution
or liquidation. The Board shall notify each participant in writing, at least ten
(10) business days prior to the New Exercise Date, that the Exercise Date for
the participant's option has been changed to the New Exercise Date and that the
participant's option shall be exercised automatically on the New Exercise Date,
unless prior to such date the participant has withdrawn from the 24-Month
Offering Period as provided in Section 10 hereof.

               (c) Merger or Asset Sale. In the event of a proposed sale of all
or substantially all of the assets of the Company, or the merger of the Company
with or into another corporation, each outstanding option shall be assumed or an
equivalent option substituted by the successor corporation or a Parent or
Subsidiary of the successor corporation. In the event that the successor
corporation refuses to assume or substitute for the option, any Semi-Annual
Participation Periods then in progress shall be shortened by setting a new
Exercise Date (the "New Exercise Date") and any 24-Month Offering Periods then
in progress shall end on the New Exercise Date. The New Exercise Date shall be
before the date of the Company's proposed sale or merger. The Board shall notify
each participant in writing, at least ten (10) business days prior to the New
Exercise Date, that the Exercise Date for the participant's option has been
changed to the New Exercise Date and that the participant's option shall be
exercised automatically on the New Exercise Date, unless prior to such date the
participant has withdrawn from the 24-Month Offering Period as provided in
Section 10 hereof.

        20. Amendment or Termination.

               (a) The Board of Directors of the Company may at any time and for
any reason terminate or amend the Plan. Except as provided in Section 19 hereof,
no such termination can affect options previously granted, provided that a
24-Month Offering Period may be terminated by the Board of Directors on any
Exercise Date if the Board determines that the termination of the 24-Month
Offering Period or the Plan is in the best interests of the Company and its
shareholders.

                                      -8-
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Except as provided in Section 19 and this Section 20 hereof, no amendment may
make any change in any option theretofore granted which adversely affects the
rights of any participant. To the extent necessary to comply with Section 423 of
the Code (or any successor rule or provision or any other applicable law,
regulation or stock exchange rule), the Company shall obtain shareholder
approval in such a manner and to such a degree as required.

               (b) Without shareholder consent and without regard to whether any
participant rights may be considered to have been "adversely affected," the
Board (or its committee) shall be entitled to change the 24-Month Offering
Periods, limit the frequency and/or number of changes in the amount withheld
during a 24-Month Offering Period, establish the exchange ratio applicable to
amounts withheld in a currency other than U.S. dollars, permit payroll
withholding in excess of the amount designated by a participant in order to
adjust for delays or mistakes in the Company's processing of properly completed
withholding elections, establish reasonable waiting and adjustment periods
and/or accounting and crediting procedures to ensure that amounts applied toward
the purchase of Common Stock for each participant properly correspond with
amounts withheld from the participant's Compensation, and establish such other
limitations or procedures as the Board (or its committee) determines in its sole
discretion advisable which are consistent with the Plan.

               (c) In the event the Board determines that the ongoing operation
of the Plan may result in unfavorable financial accounting consequences, the
Board may, in its discretion and, to the extent necessary or desirable, modify
or amend the Plan to reduce or eliminate such accounting consequence including,
but not limited to:

                          (i) altering the Purchase Price for any 24-Month
Offering Period including a 24-Month Offering Period underway at the time of the
change in Purchase Price;

                          (ii) shortening any 24-Month Offering Period so that
24-Month Offering Period ends on a new Exercise Date, including a 24-Month
Offering Period underway at the time of the Board action; and

                          (iii) allocating shares.

               Such modifications or amendments shall not require stockholder
approval or the consent of any Plan participants.

        21. Notices. All notices or other communications by a participant to the
Company under or in connection with the Plan shall be deemed to have been duly
given when received in the form specified by the Company at the location, or by
the person, designated by the Company for the receipt thereof.

        22. Conditions Upon Issuance of Shares. Shares shall not be issued with
respect to an option unless the exercise of such option and the issuance and
delivery of such shares pursuant thereto shall comply with all applicable
provisions of law, domestic or foreign, including, without limitation, the
Securities Act of 1933, as amended, the Securities Exchange Act of 1934, as
amended, the rules and regulations promulgated thereunder, and the requirements
of any stock exchange upon which the shares may then be listed, and shall be
further subject to the approval of counsel for the Company with respect to such
compliance.

                                      -9-
<PAGE>   10

               As a condition to the exercise of an option, the Company may
require the person exercising such option to represent and warrant at the time
of any such exercise that the shares are being purchased only for investment and
without any present intention to sell or distribute such shares if, in the
opinion of counsel for the Company, such a representation is required by any of
the aforementioned applicable provisions of law.

        23. Term of Plan. The Plan shall become effective upon the earlier to
occur of its adoption by the Board of Directors or its approval by the
shareholders of the Company. It shall continue in effect for a term of ten (10)
years unless sooner terminated under Section 20 hereof.

        24. Automatic Transfer to Low Price 24-Month Offering Period. To the
extent permitted by any applicable laws, regulations, or stock exchange rules if
the Fair Market Value of the Common Stock on any Exercise Date in a 24-Month
Offering Period is lower than the Fair Market Value of the Common Stock on the
Enrollment Date of such 24-Month Offering Period, then all participants in such
24-Month Offering Period shall be automatically withdrawn from such 24-Month
Offering Period immediately after the exercise of their option on such Exercise
Date and automatically re-enrolled in the immediately following 24-Month
Offering Period as of the first day thereof.

                                      -10-
<PAGE>   11

                                    EXHIBIT A

                                    OMM, INC.

                        2000 EMPLOYEE STOCK PURCHASE PLAN

                             SUBSCRIPTION AGREEMENT

_____ Original Application                           Enrollment Date:___________
_____ Change in Payroll Deduction Rate
_____ Change of Beneficiary(ies)

1.      ____________________ hereby elects to participate in the OMM, Inc.
        Employee Stock Purchase Plan (the "Employee Stock Purchase Plan") and
        subscribes to purchase shares of the Company's Common Stock in
        accordance with this Subscription Agreement and the Employee Stock
        Purchase Plan.

2.      I hereby authorize payroll deductions from each paycheck in the amount
        of ____% of my Compensation on each payday (from 0 to 10%) during the
        24-Month Offering Period in accordance with the Employee Stock Purchase
        Plan. (Please note that no fractional percentages are permitted.)

3.      I understand that said payroll deductions shall be accumulated for the
        purchase of shares of Common Stock at the applicable Purchase Price
        determined in accordance with the Employee Stock Purchase Plan. I
        understand that if I do not withdraw from a 24-Month Offering Period,
        any accumulated payroll deductions will be used to automatically
        exercise my option.

4.      I have received a copy of the complete Employee Stock Purchase Plan. I
        understand that my participation in the Employee Stock Purchase Plan is
        in all respects subject to the terms of the Plan. I understand that my
        ability to exercise the option under this Subscription Agreement is
        subject to shareholder approval of the Employee Stock Purchase Plan.

5.      Shares purchased for me under the Employee Stock Purchase Plan should be
        issued in the name(s) of (Employee or Employee and Spouse only).

6.      I understand that if I dispose of any shares received by me pursuant to
        the Plan within 2 years after the Enrollment Date (the first day of the
        24-Month Offering Period during which I purchased such shares) or one
        year after the Exercise Date, I will be treated for federal income tax
        purposes as having received ordinary income at the time of such
        disposition in an amount equal to the excess of the fair market value of
        the shares at the time such shares were purchased by me over the price
        which I paid for the shares. I hereby agree to notify the Company in
        writing within 30 days after the date of any disposition of my shares
        and I will

<PAGE>   12

        make adequate provision for Federal, state or other tax withholding
        obligations, if any, which arise upon the disposition of the Common
        Stock. The Company may, but will not be obligated to, withhold from my
        compensation the amount necessary to meet any applicable withholding
        obligation including any withholding necessary to make available to the
        Company any tax deductions or benefits attributable to sale or early
        disposition of Common Stock by me. If I dispose of such shares at any
        time after the expiration of the 2-year and 1-year holding periods, I
        understand that I will be treated for federal income tax purposes as
        having received income only at the time of such disposition, and that
        such income will be taxed as ordinary income only to the extent of an
        amount equal to the lesser of (1) the excess of the fair market value of
        the shares at the time of such disposition over the purchase price which
        I paid for the shares, or (2) 15% of the fair market value of the shares
        on the first day of the 24-Month Offering Period. The remainder of the
        gain, if any, recognized on such disposition will be taxed as capital
        gain.

7.      I hereby agree to be bound by the terms of the Employee Stock Purchase
        Plan. The effectiveness of this Subscription Agreement is dependent upon
        my eligibility to participate in the Employee Stock Purchase Plan.

8.      In the event of my death, I hereby designate the following as my
        beneficiary(ies) to receive all payments and shares due me under the
        Employee Stock Purchase Plan:

        NAME:  (Please print)___________________________________________________
                              (First)               (Middle)              (Last)

        -------------------------   --------------------------------------------
        Relationship

                                    --------------------------------------------
                                    (Address)

                                      -2-

<PAGE>   13

        Employee's Social
        Security Number:
                                            ------------------------------------

        Employee's Address:                 ------------------------------------

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

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

I UNDERSTAND THAT THIS SUBSCRIPTION AGREEMENT SHALL REMAIN IN EFFECT THROUGHOUT
SUCCESSIVE 24-MONTH OFFERING PERIODS UNLESS TERMINATED BY ME.

Dated:
      --------------------------            -----------------------------------
                                            Signature of Employee

                                            -----------------------------------
                                            Spouse's Signature (If beneficiary
                                            other than spouse)

                                      -3-
<PAGE>   14

                                    EXHIBIT B

                                    OMM, INC.

                        2000 EMPLOYEE STOCK PURCHASE PLAN

                              NOTICE OF WITHDRAWAL

        The undersigned participant in the 24-Month Offering Period of the OMM,
Inc. Employee Stock Purchase Plan which began on ____________, ______ (the
"Enrollment Date") hereby notifies the Company that he or she hereby withdraws
from the 24-Month Offering Period. He or she hereby directs the Company to pay
to the undersigned as promptly as practicable all the payroll deductions
credited to his or her account with respect to such 24-Month Offering Period.
The undersigned understands and agrees that his or her option for such 24-Month
Offering Period will be automatically terminated. The undersigned understands
further that no further payroll deductions will be made for the purchase of
shares in the current 24-Month Offering Period and the undersigned shall be
eligible to participate in succeeding 24-Month Offering Periods only by
delivering to the Company a new Subscription Agreement.

                                    Name and Address of Participant:

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

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

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

                                    Signature:

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

                                    Date:
                                         ---------------------------<PAGE>   1
                                                                   EXHIBIT 10.14

                              SAN DIEGO TECH CENTER

                          OFFICE BUILDING LEASE BETWEEN

        SAN DIEGO TECH CENTER, LLC, A DELAWARE LIMITED LIABILITY COMPANY

                                       AND

                OPTICAL MICRO MACHINES, A CALIFORNIA CORPORATION

<PAGE>   2

                   BASIC LEASE TERMS OF OFFICE BUILDING LEASE
                                     BETWEEN
                           SAN DIEGO TECH CENTER, LLC
                                       AND
                             OPTICAL MICRO MACHINES

               The following Basic Lease Terms constitute a general summary of
the San Diego Tech Center Office Building Lease to which they are attached. This
summary is for convenience only; the terms and provisions of the Lease attached
hereto are controlling.

        1. Landlord: San Diego Tech Center, LLC, a Delaware limited liability
company.

        2. Tenant: Optical Micro Machines, a California corporation.

        3. Premises: Approximately 17,463 rentable square feet (including 6,000
rentable square feet designated as the "Must Take Space") in the building
located at 9645 Scranton Road, San Diego, California 92121, commonly known as
Building 2 of the San Diego Tech Center.

        4. Lease Term: Sixty (60) months, with one three (3) year option to
extend subject to the terms of Article 32.

        5. Commencement Date: June 1, 1999.

        6. Rent:

               (a) Rent:  $1.28 per rentable square foot per month, subject
                   to annual increases under the terms of Section 4.1.

               (b) Additional Charges: (See Section 5.1(e) and (f) for Tenant's
                   Share of Building Expenses and Tenant's
                   Share of Project Expenses, respectively)

               (c) Abatement Period for Must Take Space: (See Section 4.4)

        7. Security Deposit: Twenty-Nine Thousand Three Hundred Thirty-Seven and
84/100 Dollars ($29,337.84).

        8. Permitted Use: General office, research and development, light
assembly and related uses, subject to the provisions of Article 9.

        9. T.I. Allowance: Six and 25/100 Dollars ($6.25) per rentable square
foot of the Premises, plus an additional Three Dollars ($3.00) per rentable
square foot of the Premises to be fully amortized over the Initial Term, subject
to the provisions of Articles 7 and 31.

        10. Insurance: Tenant to obtain insurance as described in Section 16 of
the Lease.

        11. Address for Payments and Notices to Landlord:

                             c/o SENTRE Partners, Inc.
                             9605 Scranton Road, Suite 102
                             San Diego, California 92121.

        12. Address for Notices to Tenant:

                             To the Premises
                             Attn: Anis Husain

        13. Broker(s): The Irving Hughes Group, Inc.

        14. Parking: Unreserved Onsite: 3.1 parking spaces per 1,000 rentable
square feet of the Premises (for a total of 54 spaces).

                                       -1-

<PAGE>   3

                              SAN DIEGO TECH CENTER
                          OFFICE BUILDING LEASE BETWEEN
        SAN DIEGO TECH CENTER, LLC, A DELAWARE LIMITED LIABILITY COMPANY
              AND OPTICAL MICRO MACHINES, A CALIFORNIA CORPORATION

               THIS LEASE, dated as of March 25, 1999, for purposes of reference
only, is made and entered into by and between SAN DIEGO TECH CENTER, LLC, a
Delaware limited liability company ("Landlord"), and OPTICAL MICRO MACHINES, a
California corporation ("Tenant").

               Landlord and Tenant hereby covenant and agree as follows:

        1. Definitions.

               1.1 Location of Definitions. For convenience of reference only,
the following terms are defined in the Section indicated:

                             (a)    AAA - 30.18(a)
                             (b)    Abatement Period - 4.4
                             (c)    Additional Charges - 4.2
                             (d)    Alterations - 10.1
                             (e)    Asbestos Reports - 30.1
                             (f)    Assignment - 18.1
                             (g)    Building - 2.1
                             (h)    Buildings - 2.3
                             (i)    Building Common Area(s) - 2.2
                             (j)    Building Expenses - 5.1(c)
                             (k)    Building Real Property - 2.1
                             (l)    Building Rentable Area - 2.6
                             (m)    Commencement Date - 3.1
                             (n)    Damaged Property - 15.1
                             (o)    Expiration Date - 3.1
                             (p)    Extension Term - 3.2
                             (q)    Hazardous Material 9.4
                             (r)    Initial Term - 3.1
                             (s)    Landlord's Expense Statement - 5.3
                             (t)    Partial Year - 5.4
                             (u)    Premises - 2.1
                             (v)    Project - 2.3
                             (w)    Project Common Area(s) - 2.4
                             (x)    Project Expenses - 5.1(d)
                             (y)    Project Real Property - 2.4
                             (z)    Project Rentable Area - 2.7
                             (aa)   Real Estate Taxes - 5.1(a)
                             (bb)   Related Entities - 22.2
                             (cc)   Relocation Notice - 30.19
                             (dd)   Rent - 4.1
                             (ee)   Rentable Area - 2.5
                             (ff)   Security Deposit - 6
                             (gg)   Sublease - 18.1
                             (hh)   Substitute Premises - 30.19
                             (ii)   Tenant Improvements - 7.1
                             (jj)   Tenant Owned Property - 10.2
                             (kk)   Tenant's Agents - 22.2
                             (ll)   Tenant's Building Share - 5.1(e)
                             (mm)   Tenant's Delay - 3.1
                             (nn)   Tenant's Project Share - 5.1(f)
                             (oo)   Term - 3.1
                             (pp)   The worth at the time of award - 20.2(f)

        2. Premises.

               2.1 Premises/Building/Building Real Property Defined. Subject to
the terms, covenants and conditions hereinafter set forth, Landlord hereby
leases to Tenant and Tenant hereby hires from Landlord those premises (the
"Premises") consisting of the area shown on the floor plan(s) attached hereto as
Exhibit "A" located in the building located at 9645 Scranton Road, San Diego,
California 92121, commonly known as Building 2 of the San Diego Tech Center (the
"Building"). The Building and the real property upon which the Building is
located, together with the utilities, facilities, drives, walkways and other
amenities directly appurtenant to and servicing the Building are herein
sometimes collectively called the "Building Real Property". The exact boundary
of the Premises shall be as constructed, and shall extend to the unfinished
surface of all floors and the underside of the structural concrete slab forming
the

                                       -2-

<PAGE>   4
ceiling of the Premises. Landlord shall have the right at Landlord's sole
discretion to lease portions of the Building for retail and other uses from time
to time, and Landlord makes no representations or warranties as to the character
or nature of any of the tenancies in the Building. Landlord shall have the
exclusive right to determine the nature, location, and mix of tenants of the
Building and of the Project and all other matters relating to the operation
thereof.

               2.2 Building Common Area Defined. The terms "Building Common
Area" and "Building Common Areas" shall mean spaces, facilities, and
installations such as restrooms, janitor, telephone, electrical, and mechanical
rooms and closets, trash facilities, stairs, public lobbies, corridors and other
circulation areas, wherever located in the Building, and all other areas of the
Building not intended by Landlord to be leased to tenants, as may be designated
by Landlord from time to time.

               2.3 Project Defined. The Building is part of a real estate
project commonly known as the San Diego Tech Center (the "Project"). For
purposes of this Lease, the Project shall be deemed to consist of the Building,
Buildings 1, 3, 3D, 4, 5, 5A, 5B and 5C, a free-standing restaurant, a
free-standing athletic club, an aerobic center, a racquetball court, two tennis
courts, two volleyball courts, walking/running paths, landscape, sidewalks and
adjacent parking areas and all appurtenances to the foregoing, all as shown on
the site plan attached hereto as Exhibit "B". The Building and Buildings 2, 3,
3D, 4, 5, 5A, 5B and 5C (including common areas within said Buildings) are
sometimes herein collectively called the "Buildings").

               2.4 Project Common Area and Project Real Property Defined. The
term "Project Common Area" and "Project Common Areas" shall mean all portions of
the Project other than (i) the Buildings (but including the aerobic center and
racquetball court if they are located in any of the Buildings), and (ii) the
Building Common Areas. The real property upon which the Project Common Areas are
located, together with the utilities, facilities, drives, walkways and other
amenities appurtenant to or servicing the Project Common Areas, are herein
sometimes collectively called the "Project Real Property." Tenant acknowledges
and agrees that Landlord, in its sole discretion, may relocate, eliminate, alter
or otherwise make such decisions with respect to the various components of
Project Common Areas as Landlord in good faith deems appropriate.

               2.5 Rentable Area Defined. For purposes of this Lease, the
"Rentable Area" of the Premises shall be 17,463 rentable square feet (includes
the "Rentable Area" of the Must Take Space (defined below) which shall be 6,000
rentable square feet) measured using the standard set forth in Section 2.8
below; provided, however, that Landlord makes no representations or warranties
as to the exact square footage in the Premises.

               2.6 Building Rentable Area Defined. For purposes of this Lease,
the "Building Rentable Area" shall be 154,773 rentable square feet, consisting
of rentable square feet in the Building measured using the standard set forth in
Section 2.8 below; provided, however, that Landlord makes no representations or
warranties as to the exact square footage in the Building.

               2.7 Project Rentable Area Defined. For purposes of this Lease,
the "Project Rentable Area" shall be 632,809 square feet, consisting of rentable
square feet contained in the Buildings; provided, however, that Landlord makes
no representations or warranties as to the exact square footage in the Project.

               2.8 Rentable Area of Premises and Building. Rentable Area for the
Premises and Building has been calculated pursuant to the Standard Method for
Measuring Floor Area in Office Buildings, ANSIZ65.1-1980 (BOMA).

        3. Term.

               3.1 Initial Term. The parties intend that the initial term of
this Lease (the "Initial Term") shall commence on June 1, 1999 (the
"Commencement Date"), and shall expire on May 31, 2004, unless sooner terminated
pursuant to the terms of this Lease. When used herein, "Term" shall mean the
period of both the Initial Term and, if it occurs, the Extension Term (defined
below in Article 32). The date on which this Lease expires shall be
referred to herein as the "Expiration Date." Prior to the Commencement Date for
the Premises, and upon receipt of a Building permit for the Premises from the
City of San Diego, Landlord will allow Tenant access to the Premises in order to
install tenant improvements, fixtures, furnishings and equipment and to
otherwise ready the Premises for Tenant's occupancy; provided that such early
entry will be subject to all the terms and provisions of this Lease as though
the Commencement Date had occurred, except for the payment of Rent and
Additional Charges which commence as set forth in this Lease.

        4. Rent: Additional Charges.

               4.1 Rent. Tenant shall pay to Landlord during the Initial Term
$1.28 per month per rentable square foot of the Premises. The Rent for the
Premises shall be increased by four percent (4%) every one (1) year anniversary
after the Commencement Date on a cumulative basis. Rent shall be payable by
Tenant monthly beginning on the Commencement Date and thereafter on or before
the first day of each month, in advance. If the Commencement Date should occur
on a day other than the first day of a calendar month, or the Expiration Date
should occur on a day other than the last day of a

                                       -3-
<PAGE>   5

calendar month, then the Rent for such fractional month shall be prorated upon a
daily basis based upon a thirty (30) day calendar month, and based upon the rate
for the immediately following or preceding month. Tenant shall pay the first
month's Rent for the Premises upon execution of this Lease by Landlord and
Tenant.

               4.2 Additional Charges. Commencing on the Commencement Date for
the Premises, Tenant shall pay to Landlord in equal monthly installments on or
before the first day of each month, in advance and at the place where the Rent
is payable, all charges, fees and expenses and other amounts whatsoever as
provided in or due under this Lease ("Additional Charges"), including without
limitation all amounts due pursuant to the provisions of Article 5 and the
Exhibits hereto. Landlord shall have the same remedies for Tenant's failure to
pay any item of Additional Charges when due as for failure to pay any
installment of Rent when due. For purposes of determining Landlord's remedies in
the event of Tenant's default and calculating amounts due thereunder, Additional
Charges shall be deemed to be Rent.

               4.3 Manner of Payment. All payments of Rent and Additional
Charges shall be made without prior demand and without offset, deduction or
counterclaim, in lawful money of the United States of America. Such payments
shall be made at the address for Landlord specified herein or at such other
place as Landlord shall designate from time to time.

               4.4 Abatement Period. Notwithstanding anything to the contrary
contained herein, and provided Tenant is not in default under the terms of this
Lease, the Rent and Additional Charges (except for those utilities and services
paid directly by Tenant and Tenant's reimbursement of electrical house meters as
set forth in Section 19.1 below) for a portion of the Premises consisting of
approximately 6,000 rentable square feet described as the "Must Take Space" on
Exhibit A attached hereto, shall be abated during the period commencing on the
Commencement Date through December 31, 1999 ("Abatement Period"), and Tenant
shall commence payment of such Rent and Additional Charges as of January 1, 2000
in accordance with the terms of this Lease. All other terms and provisions of
this Lease shall apply to the Must Take Space during the Abatement Period.

        5. Additional Charges for Expenses.

               5.1 Definitions. For purposes of this Article 5, the following
terms shall have the following meanings:

                      (a) "Real Estate Taxes" shall mean all general real
property taxes and general and special assessments, transit charges or fees,
fees or assessments, housing fund assessments, payments in lieu of taxes, and
any tax, fee or excise levied or assessed (whether at the date of this Lease or
thereafter) (i) on the Building Real Property or Project Real Property, any
portion thereof or Landlord's interest therein, or Landlord's personal property
used in the operation of the Building or the Project Common Areas, (ii) on the
use or occupancy of the Building Real Property or the Project Real Property or
any portion thereof, including any tax or levy made against Rent, Additional
Charges, or gross receipts from the Building or the Project Common Areas, (iii)
in connection with the business of renting space in the Building or the Project
Common Areas, or (iv) as a result of the transfer of any interest in the
Building Real Property or Project Real Property or any portion thereof or
interest therein, that are now or hereafter levied or assessed by the United
States of America, the State of California, or any political subdivision, public
corporation, district or other political or public entity. Real Estate Taxes
shall also include any other tax, fee or other excise, however described, that
may be levied or assessed as a substitute for, in whole or in part, any other
Real Estate Taxes. Real Estate Taxes shall not include income, franchise,
inheritance or capital stock taxes, unless, resulting from a change in the
method of taxation, any of such taxes is levied or assessed against Landlord as
a substitute for, in whole or in part, any other tax, assessment or charge that
would otherwise constitute a Real Estate Tax. Real Estate Taxes shall not
include those amounts payable by Tenant pursuant to Section 28, or similar
amounts attributable to other tenants of the Building. Real Estate Taxes for any
period in which the Building is not one hundred percent (100%) occupied and
assessed on that basis shall be adjusted according to Landlord's reasonable
estimate to reflect the Real Estate Taxes which would be payable if the Building
were one hundred percent (100%) occupied and assessed on that basis.

                      (b) Notwithstanding anything to the contrary contained
herein, Real Estate Taxes shall not include income tax, excess profits or
revenue tax, excise tax, inheritance tax, gift tax, gains tax, franchise tax,
transfer tax (as opposed to increases in Real Estate Taxes resulting from a
transfer of any interest in the Building Real Property or Project Real
Property), corporation tax, capital levy, estate, succession or other similar
tax or charge that may be payable by or chargeable to Landlord under any present
or future laws.

                      (c) "Building Expenses" shall mean the costs and expenses
directly and reasonably paid or incurred by Landlord in connection with the
management, operation, maintenance and repair of the Building, including
without, limitation, (i) Real Estate Taxes related to the Building Real
Property, (ii) the cost of heating, ventilation, air conditioning, steam,
electricity, gas, domestic water, sewer services, mechanical, elevator and other
systems and all other utilities, and the cost of supplies and equipment and
maintenance and service contracts in connection therewith, (iii) the cost of
repairs, replacements, general maintenance and cleaning, including the cost of
janitorial and other service agreements and trash removal, (iv) the cost of such
fire, extended coverage, boiler, sprinkler, apparatus,

                                       -4-

<PAGE>   6
public liability, property damage, rent, earthquake and other insurance as
Landlord is required to carry under this Lease or reasonably deems it
appropriate to carry or is required to carry by any mortgagee under any mortgage
against the Building Real Property or any portion thereof or interest therein
with respect to the Building or any of Landlord's or a property manager's
personal property used in the operation of the Building, (v) the cost (including
loan fees made at market terms) of any capital improvements made to the Building
after the date of this Lease as a labor-saving measure or to effect other
economies in the operation or maintenance of the Building to the extent such
improvements result in a reduction of Building Expenses (amortized over the
useful life of the improvement), or made to the Building after the date of this
Lease that are required under any governmental law or regulation that was not
applicable to the Building at the date of this Lease (amortized over the useful
life of the improvement), together with interest on the unamortized balance(s)
at the rate of ten percent (10%) per annum or such higher market rate as may
have been paid by Landlord on funds borrowed for the purpose of constructing
such capital improvements, (vi) costs of maintenance, repair and replacement of
the roof of the Building (with respect to the cost of the complete replacement
of the roof of the Building, such costs shall be amortized over the useful life
of the roof), excluding costs of repair and replacement of the structural
elements of the roof, (vii) all supplies, materials, equipment and tools used in
the management, operation and maintenance of the Building, including any rental
fees, (viii) all costs and fees for licenses, inspections or permits that
Landlord may be required to obtain with respect to the Building, (ix) exterior
and interior landscaping, and (x) any other reasonable expenses of any other
kind whatsoever reasonably incurred in managing, operating, maintaining and
repairing the Building. Expenses for any period in which the Building is not one
hundred percent (100%) occupied shall be adjusted according to Landlord's
reasonable estimate to reflect the Building Expenses which would be payable if
the Building were one hundred percent (100%) occupied. Building Expenses shall
not include any of the following: (a) legal fees, brokerage commissions,
advertising costs or other related expenses incurred in connection with the
leasing of any portion of the Building; (b) repairs, alterations, additions,
improvements or replacements (and associated legal costs) made to rectify or
correct any defect in the design, materials or workmanship of the Building or
Building Common Areas; (c) costs incurred in connection with damage or repairs
which are covered under any insurance policy carried by Landlord in connection
with the Building or Building Common Areas; (d) costs associated with damage or
repairs to the Building or Building Common Areas necessitated by the gross
negligence or willful misconduct of Landlord or Landlord's agents; (e) executive
salaries of on-site management or salaries of service personnel to the extent
that such salaries are payable in connection with services other than in
connection with the management, operation, repair or maintenance of the Building
or Building Common Areas; (f) the cost of off-site service personnel to the
extent that such personnel are not engaged in the management, operation, repair
or maintenance of the Building or Building Common Areas; (g) Landlord's general
overhead expenses not related to the Building or Building Common Areas; (h)
payments of principal or interest on any mortgage or other encumbrance (other
than those related to capital improvements as provided herein); (i) legal fees,
accountant fees, and other expenses incurred in connection with disputes with
other tenants or occupants of the Building or associated with the enforcement of
any other leases or defense of Landlord's title to or interest in the Building
or any part thereof; (j) costs (including permit, license and inspection fees)
incurred in renovating or otherwise improving, decorating, painting or altering
space for other tenants or other occupants of vacant space in the Building; (k)
costs incurred due to a violation by Landlord or any other tenant in the
Building of the terms and conditions of any lease or any applicable law or
regulation; (l) services or installations furnished to any tenant in the
Building which are not furnished to Tenant or quantities of such services
furnished to any tenant in the Building which are also furnished to Tenant but
are furnished to other tenants in an amount materially in excess of that which
would represent a fair proportion of such services; (m) the cost of any service
provided to Tenant or other occupants of the Building for which Landlord is
entitled to be reimbursed; (n) any personal property taxes payable by Tenant or
by other tenants of the Building; (o) costs of fines arising from Landlord's
violation of any governmental rule or authority, including, without limitation,
the costs of correcting any code violations which were violations prior to the
commencement of the Lease Term; (q) overhead and profit increment paid to
Landlord or subsidiaries or affiliates of Landlord for management or other
services on or to the Building or for goods, supplies or other materials, to the
extent that the costs of such services, goods, supplies or materials exceed the
reasonable costs that would have been paid had the services, supplies or
materials been rendered on a competitive basis and been provided by parties
unaffiliated with Landlord capable of providing same; (r) gas and electric power
costs for which Tenant directly contracts with the local public service company;
(s) costs arising from Landlord's charitable or political contributions or from
costs or fees associated with Landlord's membership in trade associations or
similar organizations; (t) tax penalties incurred as a result of Landlord's
negligence, inability or unwillingness to make payments when due; (u) costs
arising from the presence of Hazardous Materials (as defined in this Lease) in,
on, under or about the Building, including, without limitations, Hazardous
Materials in the groundwater or soil under the Building and provided that the
presence of such Hazardous Materials either predates the Commencement Date or is
not attributable to the activities indemnified by Tenant under Section 9.4 of
this Lease; (v) the costs of any management fee in excess of management fees
typically charged for comparable class A buildings in San Diego; and (w) costs
related to a Year 2000 malfunction of Building systems which could reasonably be
avoided by corrections or repairs to the affected Building equipment in advance.
Landlord shall not collect in excess of one hundred percent (100%) of the cost
of all Building Expenses.

                      (d) "Project Expenses" shall mean the costs and expenses
directly and reasonably paid or incurred by Landlord in connection with the
management, operation, maintenance and repair of the Project Common Areas,
including, without limitation (i) Real Estate Taxes related to the Project Real
Property, (ii) the cost of heating, ventilation, air conditioning, steam,
electricity, gas,
                                       -5-
<PAGE>   7
domestic water, sewer services, mechanical, elevator and other systems and all
other utilities, and the costs of supplies and equipment and maintenance and
service contracts in connection therewith, (iii) the cost of repairs,
replacements, general maintenance and cleaning, including the cost of janitorial
and other service agreements and trash removal, (iv) the cost of such fire,
extended coverage, boiler, sprinkler, apparatus, public liability, property
damage, rent, earthquake and other insurance as Landlord reasonably deems it
appropriate to carry or is required to carry by any mortgage under any mortgage
against the Project Common Areas or any portion thereof or interest therein with
respect to the Project Common Areas or any of Landlord's or a property manager's
personal property used in the operation of the Project Common Areas, (v) wages,
salaries and other labor costs of all on-site employees, and all off-site
employees to the extent engaged in the operation, management, maintenance and
security of the Project, including taxes, insurance, retirement, medical and
other employee benefits, but excluding leasing commission, (vi) fees, charges
and other costs, including property management fees, consulting fees attorneys'
fees and accounting fees of all independent contractors engaged by Landlord, and
all such fees reasonably charged by Landlord if Landlord performs management
services in connection with the Project, (vii) the cost of supplying, replacing
and cleaning employee uniforms, (viii) the fair market rental value of
Landlord's or the property manager's offices in the Project (which shall be of
reasonable size), to the extent utilized for the management or operation of the
Project, (ix) the costs (including loan fees at market rates) of any capital
improvements made to the Project Common Areas after the date of this Lease as a
labor-saving measure or to effect other economies in the operation or
maintenance of the Project Common Areas to the extent such improvements result
in a reduction of Project Expenses (amortized over the useful life of the
improvement), or made to the Project Common Areas after the date of this Lease
that are required under any governmental law or regulation that was not
applicable to the Project Common Areas at the date of this Lease (amortized over
the useful life of the improvement), together with interest on the unamortized
balance(s) at the rate of ten percent (10%) per annum or such higher market rate
as may have been paid by Landlord on funds borrowed for the purpose of
constructing such capital improvements, (x) costs of maintenance repair and
replacement of the roof of the Building (with respect to the cost of the
complete replacement of the roof of the Building, such costs shall be amortized
over the useful life of the roof), excluding costs of repair and replacement of
the structural elements of the roof, (xi) all supplies, materials, equipment and
tools used in the management, operation and maintenance of the Project Common
Areas, including any rental fees, (xii) all costs and fees for licenses,
inspections or permits that Landlord may be required to obtain in connection
with the Project Common Areas, (xiii) expenses incurred for the maintenance of
art work, streetscaping and similar enhancements of the Project which in
Landlord's reasonable judgment will benefit the Project, and (xiv) any other
reasonable expenses of any other kind whatsoever reasonably incurred in
managing, operating, maintaining and repairing the Project Common Areas.
Expenses for any period in which the Project is not 100% occupied shall be
adjusted according to Landlord's reasonable estimate to reflect the Project
Expenses which would be payable if the Project were 100% occupied. Project
Expenses shall not include any of the following: (a) legal fees, brokerage
commissions, advertising costs or other related expenses in connection with the
leasing of any portion of the Project; (b) repairs, alterations, additions,
improvements or replacements (and associated legal costs) made to rectify or
correct any defect in the design, materials or workmanship of the Project of
Project Common Areas; (c) costs incurred in connection with damage or repairs
which are covered under any insurance policy carried by Landlord in connection
with the Project or Project Common Areas; (d) costs associated with damage or
repairs to the Project or the Project Common Areas necessitated by the gross
negligence or willful misconduct of Landlord or Landlord's agents; (e) executive
salaries of on-site management or salaries of service personnel to the extent
that such salaries are payable in connection with services other than in
connection with the management, operation, repair or maintenance of the Project
or Project Common Areas; (f) the cost of off-site service personnel to the
extent that such personnel are not engaged in the management, operation, repair
or maintenance of the Project or Project Common Areas; (g) Landlord's general
overhead expenses not related to the Project or Project Common Areas; (h)
payments of principal or interest on any mortgage or other encumbrance (other
than those related to capital improvements as provided herein); (i) legal fees,
accountant fees and other expenses incurred in disputes with other tenants or
occupants of the Project or associated with the enforcement of any other leases
or defense of Landlord's title to or interest in the Project or any part
thereof; (j) costs (including permit, license and inspection fees) incurred in
renovating or otherwise improving, decorating, painting or altering space for
tenants or other occupants of vacant space in the Project; (k) costs incurred
due to a violation by Landlord or any other tenant in the Project of the terms
and conditions of any lease or any applicable law or regulation; (l) services or
installations furnished to any tenant in the Project which are not furnished to
Tenant or quantities of such services furnished to any tenant in the Project
which are also furnished to Tenant but are furnished to other tenants in an
amount materially in excess of that which would represent a fair proportion of
such services; (m) the cost of any service provided to Tenant or other occupants
of the Project for which Landlord is entitled to be reimbursed; (n) any personal
property taxes payable by Tenant or by other tenants of the Project; (o) costs
or fines arising from Landlord's violation of any governmental rule or
authority, including, without limitations, the costs of correcting any code
violations which were violations prior to the Commencement Date; (p) overhead
and profit increment paid to Landlord or subsidiaries or affiliates of Landlord
for management or other services on or to the Project or for goods, supplies or
other materials, to the extent that the costs of such services, goods, supplies
or materials exceed the reasonable costs that would have been paid had the
services, supplies or materials been rendered on a competitive basis and been
provided by parties unaffiliated with Landlord capable of providing same; (q)
gas and electric power cost for which any tenant directly contracts with the
local public service company; (r) tax penalties incurred as a result of
Landlord's negligence, inability or unwillingness to make payments when due; (s)
costs arising from the presence of Hazardous Materials (as defined in this
Lease) in, on, under or about any portion of the Project Common Areas,
including,
                                      -6-
<PAGE>   8
without limitation, Hazardous Materials in the groundwater or soil under the
Project Common Areas and provided that the presence of such Hazardous Materials
either predates the Commencement Date or is not attributable to the activities
indemnified by Tenant under Section 9.4 of this Lease; (t) costs arising from
Landlord's charitable or political contributions or from costs or fees
associated with Landlord's membership in trade associations or similar
organizations; (u) the costs of any management fee in excess of management fees
typically charged for comparable class A Projects in San Diego; and (v) costs
related to a Year 2000 malfunction of Project systems which could reasonably be
avoided by corrections or repairs to the affected Project equipment in advance.
Landlord shall not collect in excess of 100% of the cost of all Project
Expenses.

                      (e) Subject to the terms of Section 4.4, during the
Abatement Period, "Tenant's Building Share" shall mean 7.41% (calculated by
dividing the sum of the Rentable Area of the Premises minus the Rentable Area of
the Must Take Space (for a total of 11,463) by the Building Rentable Area
(154,773)). Commencing January 1, 2000, "Tenant's Building Share" shall mean
11.28% (calculated by dividing the Rentable Area of the Premises (17,463) by the
Building Rentable Area (154,773)). Tenant's Building Share of Building Expenses
shall normally be computed by multiplying such percentage by Building Expenses,
but shall be subject to adjustment as a result of special allocations made
pursuant to Section 5.2 and the provisions of Section 5.3. If the Rentable Area
of the Premises is changed for any reason, Tenant's Building Share shall be
modified by multiplying the percentage specified in this Paragraph (e) by a
fraction, the numerator of which shall be the rentable area of the Premises
after such change and the denominator of which shall be the rentable area of the
Premises immediately before such change. If the rentable area of the Building is
changed, then Tenant's Building Share shall be recalculated by dividing the
rentable area of the Premises after such occurrence by the rentable area of the
entire Building after such occurrence.

                      (f) Subject to the terms of Section 4.4, during the
Abatement Period, "Tenant's Project Share" shall mean 1.81% (calculated by
dividing the sum of the Rentable Area in the Premises minus the Rentable Area in
the Must Take Space (for a total of 11,463) by the Project Rentable Area
(632,809)). Commencing January 1, 2000, "Tenant's Project Share" shall mean
2.76% (calculated by dividing the Rentable Area of the Premises (17,463) by the
Project Rentable Area (632,809)). Tenant's Project Share of Project Expenses
shall normally be computed by multiplying such percentage by Project Expenses,
but shall be subject to adjustment as a result of special allocations made
pursuant to Section 5.2 and the provisions of Section 5.3. If the rentable area
of the Premises is changed for any reason, Tenant's Project Share shall be
modified by multiplying the percentage specified in this Paragraph (f) by a
fraction, the numerator of which shall be the rentable area of the Premises
after such change and the denominator of which shall be the rentable area of the
Premises immediately before such change. If the rentable area of the Project is
changed, then Tenant's Project Share shall be recalculated by dividing the
rentable area of the Premises after such occurrence by the rentable area of the
entire Project after such occurrence.

               5.2 Special Allocations. Building Expenses and Project Expenses
which are, in Landlord's reasonable discretion, properly chargeable solely to a
single tenant or to a group of tenants shall be so allocated. Landlord shall
endeavor to make all such allocations fairly. Any amount so allocated to Tenant
shall be paid by Tenant as Additional Charges.

               5.3 Payment of Tenant's Building Share and Tenant's Project Share
of Building Expenses and Project Expenses. Except as otherwise provided herein,
commencing on the Commencement Date for the Premises, Tenant shall pay to
Landlord as Additional Charges one twelfth (1/12th) of Tenant's Building Share
of Building Expenses and one twelfth (1/12th) of Tenant's Project Share of
Project Expenses, respectively on or before the first day of each month of the
Term, in advance, in an amount reasonably estimated by Landlord and billed by
Landlord to Tenant; provided that Landlord shall have the right to revise such
estimate at any time. Within one hundred twenty (120) days after the end of each
calendar year, Landlord shall furnish Tenant with a statement ("Landlord's
Expense Statement"), certified as true and correct by an accounting or auditing
officer of Landlord or a property manager, setting forth in reasonable detail
the actual amount of Building Expenses and Project Expenses for such year, and
Tenant's Building Share of Building Expenses and Tenant's Project Share of
Project Expenses, respectively. If the actual amount of Tenant's Building Share
or Tenant's Project Share of Building Expenses or Project Expenses,
respectively, due for such year differs from the estimated amount of Tenant's
Building Share or Tenant's Project Share of Building Expenses or Project
Expenses, respectively, paid by Tenant for such year, the difference shall be
paid by Tenant within thirty (30) days after the receipt of Landlord's Expense
Statement, or refunded in cash to Tenant within thirty (30) days after
determination thereof, as the case may be; provided, however, that in no event
shall Building Expenses or Project Expenses actually payable for a given
calendar year be less than zero.

               5.4 Partial Year Adjustments. For the purpose of calculating
Tenant's Building Share of Building Expenses and Tenant's Project Share of
Project Expenses, respectively, for the period between the Expiration Date or
date of early termination and the immediately preceding January 1 (each such
period being a "Partial Year"), Building Expenses and Project Expenses for the
calendar year in which the Partial Year occurs shall be reduced by multiplying
such amounts by a fraction, the numerator of which is the number of days in the
applicable Partial Year and the denominator of which is three hundred and
sixty-five (365), and such reduced amounts shall be the amounts payable during
such Partial Year, and monthly payments of Tenant's Building Share of estimated
Building Expenses and of Tenant's Project Share of Project Expenses shall be
based on the number of months in the applicable Partial Year.

                                       -7-
<PAGE>   9

               5.5 Tenant's Right to Audit Landlord's Records. Within thirty
(30) days after Tenant's request, but not more than twice per year, Landlord
shall provide Tenant with copies of Landlord's records relating to Building
Expenses and Project Expenses; provided, however, that Tenant shall reimburse
Landlord for the actual and reasonable cost thereof. In the event of any dispute
or uncertainty as to said amounts Tenant shall be entitled to review legible
copies of all of Landlord's tax bills, invoices, files and records with respect
to the disputed items at the place where such materials are normally maintained,
but not more often than twice per year. If, after its inspection and review,
Tenant has a good faith belief that it has reason to dispute the amount of such
Additional Charges, Tenant shall be entitled to retain a national, independent
certified public accountant to audit such materials. If Landlord desires to
contest such audit results, Landlord may do so by requesting arbitration of the
dispute as set forth below within fifteen (15) days of receipt of the results of
the audit, and the arbitration shall be final and binding upon Landlord and
Tenant. If it is determined from the audit, or the arbitration if applicable,
that Tenant was overcharged by more than three percent (3%) of the aggregate
total Building Expenses or Project Expenses for such calendar year, such
overcharge shall entitle Tenant to credit against its next payment of Additional
Charges the amount of the overcharge and the costs associated with the audit,
and the arbitration if applicable (and, if such credit occurs following the
expiration of the Term, Landlord shall promptly pay the amount of such credit to
Tenant). If the audit, or arbitration if applicable, determines that the Tenant
was overcharged less than three percent (3%) of the aggregate total Building
Expenses or Project Expenses for such calendar year, such overcharge shall
entitle Tenant to credit against its next payment of Additional Charges the
amount of the overcharge and Tenant shall pay for all costs associated with the
audit, and the arbitration if applicable. If the audit shall determine that
Tenant was undercharged, Tenant shall promptly pay the amount of such
undercharge to Landlord and Tenant shall pay for all costs associated with the
audit, and the arbitration if applicable.

               Within fifteen (15) days of Landlord's request for arbitration,
Landlord and Tenant shall each appoint one arbitrator who shall be a real estate
professional (including, without limitation, real estate lawyers and brokers
(who may specialize in either landlord or tenant representation, or both)) who
shall have been active over the five (5) year period ending on the date of such
appointment in the leasing of comparable commercial properties in the San Diego,
California area, exclusive of any broker from any brokerage firm currently
representing (or who had previously represented within the preceding three (3)
year period) either party, or any affiliate thereof. The two arbitrators so
appointed shall within fifteen (15) days of the date of the appointment of the
last appointed arbitrator agree upon and appoint a third arbitrator who shall be
qualified under the same criteria as set forth above. The three arbitrators
shall within thirty (30) days of the appointment of the third arbitrator reach a
determination of Tenant's Share of Building Expenses and Project Expenses. The
decision of the majority of the three arbitrators shall be final and binding
upon Landlord and Tenant.

               5.6 Objections to Statements. Tenant acknowledges that Landlord's
ability to budget and incur expenses depends on the finality of Landlord's
Expense Statements and agrees that Tenant shall have one hundred twenty (120)
days following receipt of such Statements within which to raise any objection to
the calculations contained therein. Failure of Tenant to object within such one
hundred twenty (120) day period shall be deemed a waiver of any such objection,
absent fraud or manifest errors. Tenant shall continue to make all payments
required hereunder pending resolution of any such objection. No delay by
Landlord in providing any Statement shall be deemed a default by Landlord or a
waiver of Landlord's right to require payment of Tenant's obligations for actual
or estimated Building Expenses or Project Expenses.

        6. Security Deposit. This Lease shall be of no effect unless and until
Tenant deposits with Landlord Twenty-Nine Thousand Three Hundred Thirty-Seven
and 84/100 Dollars ($29,337.84) in immediately available funds (the "Security
Deposit") as security for the full performance of Tenant's obligations under
this Lease. Upon default by Tenant with respect to the payment of any item of
Rent or Additional Charges or any other obligation contained herein, Landlord
may use or retain all or any portion of the Security Deposit for the payment of
any Rent or Additional Charges or other such sum in default or for the payment
of any amount Landlord may spend or may become obligated to spend by reason of
Tenant's default. In the event any portion of the Security Deposit is applied or
used, Tenant shall, within ten (10) business days after written notice thereof,
deposit an additional amount with Landlord sufficient to restore the Security
Deposit to its original amount as specified in this Section and Tenant's failure
to do so shall constitute a material breach of this Lease. If Tenant is not in
default under this Lease at the termination hereof, Landlord shall return the
Security Deposit to Tenant within thirty (30) days after such termination, minus
any amounts required to restore the Premises to good condition and repair,
reasonable wear and tear excepted, including damage resulting from the removal
by Tenant of its trade fixtures or equipment.

               6.1 Landlord's Obligations. Landlord's obligation with respect to
any Security Deposit is that of a debtor and not as a trustee, consequently such
sums may be commingled with rental receipts or dissipated and no interest shall
accrue thereon. In the event of the sale of the real property of which the
Premises constitute a part, Landlord or its agent shall transfer to Landlord's
successor in interest the sums held as Security Deposit and notify Tenant in
writing of such transfer and the name and address of Landlord's successor in
interest or return the Security Deposit to Tenant. Upon such written
notification, Tenant shall have no further claim against Landlord with respect
to the Security Deposit.

                                       -8-

<PAGE>   10
        7. Acceptance of Premises.

               7.1 Construction of Tenant Improvements. Tenant shall construct
but Landlord will own (and to the extent set forth in this Section 7.1 will pay
for) certain improvements (the "Tenant improvements") in the Premises. The
Tenant improvements for the Premises shall be designed and completed in
accordance with this Article 7 and Article 31 below, the cost to Landlord of
which shall not exceed One Hundred Nine Thousand One Hundred Forty-Three and
75/100 Dollars ($109,143.75) (i.e., $6.25 per rentable square foot of the
Premises) ("T.I. Allowance"). In addition, an amount not to exceed Fifty-Two
Thousand Three Hundred Eighty-Nine Dollars ($52,389) (i.e., $3.00 per rentable
square foot of the Premises) shall be contributed by Landlord, at Tenant's
request, for construction of the Tenant Improvements and shall be considered
part of the T.I. Allowance; provided, that any such additional amounts
contributed will be repaid by Tenant, plus 11% interest per annum, in equal
monthly installments amortized over the Initial Term of the Lease. Such
additional payments will be made at the same time and in the same manner as
Rent. Any costs to construct the Tenant Improvements in excess of the T.I.
Allowance shall be paid for by Tenant. The Tenant Improvements shall consist of
all interior improvements constructed in the Premises which are not part of the
Building's structure or shell and shall include by way of illustration, floor
coverings, interior partitions, doors, ceilings, lighting fixtures, wall
coverings, electrical and telephone outlets. The Tenant Improvements shall be
constructed in accordance with plans and specifications prepared by Tenant's
architect and approved by both Landlord and Tenant. The T.I. Allowance shall be
available towards the costs of the actual, incurred costs of the Tenant
Improvements, including the cost of all labor and materials for the construction
and installation of the Tenant Improvements; the cost of all permits, licenses,
and fees; all amounts paid to Tenant's contractors under and pursuant to
contracts for the construction and installation of the Tenant Improvements; all
architectural, engineering, space planning, and other consultant's fees; all
amounts paid for mechanical drawings, plans, specifications, shop drawings,
designs, and layouts; and reasonable incidental costs related to the foregoing.

               7.2 Condition at Delivery. Landlord warrants and will cause all
Building systems (including, without limitation, heating, air conditioning,
plumbing, fire sprinkler, lighting and electrical systems and utilities), as
well as the Building's structural components (including, without limitation, the
roof, roof membrane, foundation, structural and exterior walls) to be in good
working order and condition at the time the Premises are delivered to Tenant.
Except as aforesaid, Tenant shall receive the Premises broom clean in their "as
is" condition as of the date of this Lease without any demolition or other work
having been done. Tenant agrees to accept possession of the Premises in such
condition, and Tenant shall notify Landlord of any defects in the condition of
the Premises within thirty (30) days after Tenant takes possession of the
Premises. By so accepting the Premises and thereafter occupying the Premises for
such thirty (30) days without notifying Landlord of any defects. Tenant shall be
deemed to have accepted the same and to have acknowledged that the Premises
fully comply with Landlord's obligations under this Section. Upon receipt of any
such notification, Landlord shall promptly and diligently repair such defects at
Landlord's sole cost and expense. Landlord makes no representation or warranty
as to the nature, quality, or suitability for Tenant's business of the Tenant
Improvements, the Project, the Building, or the Premises, and Tenant shall have
no rights against Landlord by reason of such matters or any claimed deficiencies
therein.

               7.3 Compliance With Regulations. Landlord warrants to Tenant that
the Premises, in the state existing on the Commencement Date, but without regard
to alterations or improvements made by Tenant or to the use for which Tenant
will occupy the Premises, does not violate any covenants or restrictions of
record, or any applicable law, regulation or ordinance (including, without
limitation. The Americans With Disabilities Act of 1990 as well as all fire,
safety and Title 24 requirements) in effect on the Commencement Date, that would
substantially and adversely affect the operation and profitability of Tenant's
business conducted from the Premises. In the event that it is determined that
this warranty has been violated, then it shall be the obligation of Landlord,
after receipt of written notice from Tenant setting forth with specificity the
nature of the violation, to promptly, at Landlord's sole cost, rectify such
violation. Tenant's failure to give such written notice to Landlord within six
(6) months after the Commencement Date or, with respect to a latent defect, two
(2) months after discovery, shall result in the conclusive presumption that
Landlord has complied with all of its obligations hereunder, and that the
Premises, in the state existing on the Commencement Date, do not violate any
such covenants, restrictions, laws, or ordinances in a manner that would
substantially and adversely affect the operations and profitability of Tenant's
business conducted from the Premises, and that Tenant waives any claims thereof.

        8. Common Areas.

               8.1 Right to Use Common Areas. Tenant and Tenant's Agents shall
have the right to use the Building Common Areas and Project Common Areas in
common with other persons, subject to Landlord's reasonable rules and
regulations and the provisions of this Lease. Landlord shall, at all times, keep
the Building Common Areas and Project Common Areas in good, clean and sanitary
condition.

               8.2 Alteration of Building or Project Common Areas. Landlord
hereby reserves the right, at any time and from time to time, without liability
to Tenant of any kind whatsoever (including without limitation liability for
loss of business or profits), to make alterations or additions to the Building,
the Building Common Areas or the Project Common Areas; to change, add to,
eliminate or reduce the extent, size, shape, number or configuration of any
aspect of the Building, the Building Common Areas or the Project Common Areas or
their operations; to close to the general public all or any portion of the
Building,
                                       -9-
<PAGE>   11
the Building Common Areas or the Project Common Areas, to the extent and for the
period necessary to avoid any dedication to the public, to effect any repairs or
further construction, or in case of invasion, mob, riot, public excitement or
other circumstances rendering such action advisable in Landlord's reasonable
opinion; to change the arrangement, character, use or location of entrances or
passageways, doors and doorways, corridors, elevators, stairs, landscaping,
toilets, mechanical, plumbing, electrical or other operating systems or any
other portions of the Building, the Building Common Areas or the Project Common
Areas, to change common area to rental space and rental space to common area; to
utilize portions of the common area for entertainment, displays, product shows,
the leasing of temporary or permanent kiosks or other such uses as, in
Landlord's reasonable judgment, tend to attract the public; and to change the
name, number or designation by which the Building is commonly known. Landlord
shall have the exclusive rights to the airspace above and around, and the
subsurface below, the Premises and other portions of the Building. Landlord
shall have the exclusive right to use all exterior walls, roofs and other
portions of the Building, including common areas for signs, notices, and other
promotional purposes. Landlord shall, to the extent reasonably possible under
the circumstances, provide Tenant with advance notice of any such alterations
which Landlord reasonably anticipates will materially impair Tenant's use of the
Premises, and shall perform any such alterations in a manner so as to cause as
little interference with Tenant's use of the Premises as is reasonably possible;
provided, however, that Landlord shall not be obligated to perform work during
other than normal business hours. Tenant waives all rights to consequential
damages (including without limitation damages for lost profits and lost
opportunities) arising in connection with Landlord's exercise of its right under
this Section. Notwithstanding anything to the contrary in this Section, Landlord
shall not alter the Building or Project Common Areas in such manner that
materially and adversely impairs or impedes Tenant's use or enjoyment of the
Premises or its rights under this Lease. Notwithstanding anything to the
contrary in this Section, Landlord shall be liable for all damages resulting
from the gross negligence or willful misconduct of Landlord or Landlord's
agents, employees or contractors in performing any alterations or additions to
the Building, the Building Common Areas or the Project Common Areas.

        9. Use.

               9.1 Office Use. The Premises shall be used for general office,
research and development, light assembly and related uses, and for no other
uses. Tenant shall be responsible for compliance with all zoning laws and
ordinances and Tenant acknowledges that neither Landlord nor its agents has made
any representations or warranties with respect thereto.

               9.2 No Nuisance. Tenant and Landlord shall not allow, suffer or
permit the Premises or any use thereof to constitute a nuisance or unreasonably
interfere with the safety, comfort or enjoyment of the Project by Landlord or
any other occupants of the Project or their customers, invitees or any others
lawfully in, upon or about the Project or its environs.

               9.3 Compliance with Laws. Tenant, at Tenant's expense, shall
comply with and cause all of Tenant's Agents to comply with all applicable laws,
ordinances, rules and regulations of governmental authorities applicable to the
Building and the Project Common Areas or the use or occupancy thereof.

               9.4 Hazardous Materials. Tenant shall not cause or suffer or
permit any Hazardous Materials to be brought upon, kept, used, discharged,
deposited or leaked in or about the Premises or any other portion of the Project
by Tenant or any of Tenant's Agents or by anyone in the Premises (other than
Landlord or its agents, employees or contractors), except to the extent such
Hazardous Materials are customarily kept or used by typical office tenants or
are specifically set forth in Exhibit "D" attached hereto and are kept, used and
disposed of in strict compliance with all laws, ordinances and regulations
relating to Hazardous Materials. In the event Tenant's business requires the use
of Hazardous Materials not listed on Exhibit "D", Tenant shall in advance
promptly notify Landlord in writing of the names and approximate quantities of
such Hazardous Materials and Exhibit "D" shall be deemed amended to include such
information. If Tenant breaches the obligations stated in the preceding
sentence, or if the presence of any Hazardous Material on the Premises or any
other portion of the Project caused or suffered or permitted by Tenant or any of
Tenant's Agents or by anyone in the Premises (other than Landlord or its agents,
employees or contractors) results in contamination of the Premises or any other
portion of the Project, or if contamination of the Premises or any other portion
of the Project by any Hazardous Material otherwise occurs for which Tenant is
legally liable, then Tenant shall indemnify, defend and hold Landlord harmless
from any and all claims, judgments, damages, penalties, fines, costs,
liabilities, expenses and losses (including without limitation diminution in
value of the Project, damages for the loss of restriction on use of leasable
space or of any amenity of the Building or the Project, damages arising from any
adverse impact on marketing of space and sums paid in settlement of claims,
attorneys' fees, consultant fees and expert fees) which arise during or after
the term of this Lease as a result of such contamination. This indemnification
shall include, without limitation, costs incurred in connection with any
investigation of site conditions or any clean-up, remedial, removal or
restoration work required by any federal, state or local governmental agency or
political subdivision because of any Hazardous Material present in the soil or
groundwater on or under the Premises or any other portion of the Project.
Without limiting the foregoing, if the presence of any Hazardous Material on the
Premises or any other portion of the Project caused or suffered or permitted by
Tenant or any of Tenant's Agents or by anyone in the Premises (other than
Landlord or its agents, employees or contractors) results in any contamination
of the Premises or any other portion of the Project, Tenant shall, at its sole
cost and expense, promptly take all actions necessary to return the Premises and
all other portions of the Project affected to the condition existing

                                      -10-
<PAGE>   12
prior to the introduction of any such Hazardous Material to the Premises or
other portions of the Project, provided that Landlord's approval of such actions
shall first be obtained, which approval shall not be unreasonably withheld if
such actions would not potentially have any material adverse effect on the
Premises or any other portion of the Project.

               "Hazardous Material" means any hazardous or toxic substance,
material or waste which is or becomes regulated by any local governmental
authority, the State of California or the United States Government. The term
"Hazardous Material" includes, without limitation, any material or substance
which is (i) defined as "hazardous waste," "extremely hazardous waste" or
"restricted hazardous waste" under Sections 25115, 25117 or 25122.7, or listed
pursuant to Section 25140, of the California Health and Safety Code (Hazardous
Waste Control Law), (ii) defined as a "hazardous substance" under Section 25316
of the California Health and Safety Code (Carpenter-Presley-Tanner Hazardous
Substance Account Act), (iii) defined as a "hazardous material," "hazardous
substance" or "hazardous waste" under Section 25501 of the California Health and
Safety Code (Hazardous Materials Release Response Plans and Inventory), (iv)
defined as a "hazardous substance" under Section 25281 of the California Health
and Safety Code (Underground Storage of Hazardous Substances), (v) listed under
Article 9, or defined as hazardous or extremely hazardous pursuant to Article
11, of Title 22 of the California Code of Regulations, Division 4, Chapter 30,
(vi) designated as a "hazardous substance" pursuant to Section 311 of the
Federal Water Pollution Control Act (33 U.S.C. Section 1317), (vii) defined as a
"hazardous waste" pursuant to Section 1004 of the Resource Conservation and
Recovery Act, 42 U.S.C. Section 6901, et seq. (42 U.S.C. Section 6903), (viii)
defined as a "hazardous substance" pursuant to Section 101 of the Comprehensive
Environmental Response, Compensation and Liability Act, 42 U.S.C. Section 9601,
et seq. (42 U.S.C. Section 9601), (ix) petroleum or (x) asbestos or
asbestos-containing materials.

               Landlord shall protect, defend, indemnify, and hold Tenant, its
agents and employees harmless from and against any and all losses, liabilities,
injuries, costs, expenses, claims of any and every kind whatsoever (including,
without limitation, court costs and attorneys' fees) which at any time or from
time to time may be paid, incurred, or suffered by or asserted against Tenant,
with respect to the presence in the Premises of any Hazardous Material but only
to the extent such Hazardous Material was installed or deposited in the Building
by Landlord, or any agent, employee, or contractor of Landlord.

        10. Alterations and Tenant's Property.

               10.1 Alterations Defined. Tenant shall not make or suffer or
allow to be made any alterations, additions or improvements which cost over
$5,000 in aggregate per calendar year in or to the Premises (herein collectively
called "Alterations") without first obtaining Landlord's written consent based
on detailed plans and specifications submitted by Tenant (where reasonably
necessary). Landlord's consent may be withheld in Landlord's sole discretion if
Alterations may affect any portions of the Project containing asbestos or may
affect the structure or the mechanical, electrical, HVAC, plumbing or life
safety systems of the Building; otherwise Landlord's consent shall not be
unreasonably withheld.

               10.2 Removal of Property. All Alterations shall become the
property of Landlord, and shall be surrendered to Landlord, upon the expiration
or earlier termination of this Lease; provided, however, that this provision
shall not apply to movable equipment, trade fixtures, personal property or
furniture owned by Tenant ("Tenant Owned Property"). At Landlord's sole
election, any or all Alterations made by or on behalf of Tenant shall be removed
from the Premises at Tenant's sole cost and expense at the expiration or sooner
termination of this Lease (provided that, if Landlord's consent was required for
the installation of any Alteration(s), Landlord conditioned its consent upon the
requirement that Tenant remove such Alteration(s) upon expiration or earlier
termination of this Lease), and the Premises shall be restored, at Tenant's sole
cost and expense, to their condition before the making of such Alterations.
Tenant shall repair at its sole cost and expenses all damage caused to the
Premises or the Building by removal of any Alterations or Tenant Owned Property.
Any Tenant Owned Property not removed from the Premises before the expiration or
earlier termination this Lease shall, at Landlord's option, become the property
of Landlord, or Landlord may remove them and Tenant shall pay to Landlord the
cost of removal. Tenant waives and releases its rights under Section 1019 of the
California Civil Code, or any similar law now or hereafter in effect, to the
extent inconsistent with the provisions of this Lease.

        11. Repairs and Other Work.

               11.1 Tenant's Obligations. Tenant shall at all times maintain the
Premises (including without limitation utility systems, all signs, metal work,
doors, and windows, except as is otherwise provided in this Lease) in good,
clean and sanitary condition (reasonable wear and tear excepted) and, at
Tenant's cost and expense, shall make all repairs and replacements as and when
necessary to preserve the Premises in good working order and condition.
Notwithstanding the foregoing, if any portion of the plumbing (including
condenser water lines), mechanical, electrical, HVAC, life safety or structural
systems of the Premises requires maintenance or repair which Tenant is otherwise
obligated to perform under this Lease, Landlord shall have the option to repair
and maintain such portion on Tenant's behalf. If Landlord performs any work on
Tenant's behalf pursuant to this Section, Tenant shall pay in advance Landlord's
reasonable estimate of the cost of such work, subject to adjustment of final
costs upon completion. Landlord shall not be liable for, and there shall be no
abatement of Rent or Additional Charges with respect to, any injury to or
interference with Tenant's business arising from any repairs, maintenance,
alteration or improvement in or to any portion of the Building, including the
Premises, or in or to the fixtures, appurtenances and equipment therein unless
caused by the gross negligence or
<PAGE>   13
willful misconduct of Landlord or Landlord's agents, employees or contractors.
Tenant hereby waives and releases its rights under Sections 1941, 1941.1 and
1942 of the California Civil Code or under any similar law now or hereafter in
effect, except to the extent expressly provided herein. Tenant specifically
waives all rights to consequential damages (including without limitation damages
for lost profits and lost opportunities) arising in connection with any repairs,
maintenance, alteration or improvement in or to any portion of the Building.

               11.2 Conditions Applicable to Repairs and Other Work. All
repairs, replacements, and reconstruction (including without limitation all
Alterations) made by or on behalf of Tenant or any of Tenant's Agents (as
defined below) shall be made and performed (a) at Tenant's cost and expense and
at such time and in such manner as Landlord may reasonably designate, (b) by
contractors or mechanics reasonably approved by Landlord, (c) at least equal in
quality of materials and workmanship to the original work or installation, (d)
in accordance with such reasonable requirements as Landlord may impose with
respect to insurance and bonds to be obtained by Tenant in connection with the
proposed work, (e) in accordance with the Rules and Regulations for the Building
adopted by Landlord from time to time and in accordance with all applicable laws
and regulations of governmental authorities having jurisdiction over the
Premises, (f) so as not to interfere with the use and enjoyment of the Building
by Landlord, other tenants of the Building or any other persons, and (g) in
compliance with such other requirements as Landlord may reasonably impose
(including without limitation a requirement that Tenant furnish Landlord with
as-built drawings upon completion of the work).

        12. Liens.

               12.1 Tenant shall keep the Premises and the Building Real
Property free from any liens arising out of any (a) work performed or material
furnished to or for the Premises between the time Tenant has been provided
access to the Premises and the time Tenant surrenders possession of the Premises
(at or after expiration or earlier termination of the Lease), or (b) obligations
incurred by or for Tenant or any of Tenants' Agents before or during the term of
this Lease. In the event that Tenant shall not, within fifteen (15) days
following notice of the imposition of any such lien, cause same to be released
of record by payment or posting of a bond fully satisfactory to Landlord in form
and substance, Landlord shall have, in addition to all other remedies provided
herein and by law, the right (but not the obligation) to cause the lien to be
released by such means as Landlord shall reasonably deem proper, including
payment of the claim giving rise to such lien. All such sums reasonably paid by
Landlord and all expenses incurred by it in connection therewith shall be
considered Additional Charges and shall be payable by Tenant within thirty (30)
days after demand. Landlord shall have the right at all times to post and keep
posted on the Premises any notices permitted or required by law, or that
Landlord shall deem proper for the protection of Landlord, the Premises, the
Building Real Property and any other party having an interest therein, from
mechanics', materialmen's and other liens. In addition to all other requirements
contained in this Lease, Tenant shall give to Landlord at least ten (10)
business days prior written notice of commencement of any construction on the
Premises. Landlord will not assert any statutory landlord liens against any of
Tenant's trade fixtures, equipment, furnishings and other personal property.

        13.    Subordination.

               13.1 Tenant agrees that this Lease shall be subject and
subordinate at all times to (a) all ground leases or underlying leases that may
now exist or hereafter be executed affecting the Building Real Property or any
portion thereof, (b) the lien of any mortgage or other security instrument (and
any advances thereunder) that may now exist or hereafter be executed in any
amount for which the Building Real Property or any portion thereof, any ground
leases or underlying leases, or Landlord's interest or estate therein is
specified as security; and (c) all modifications, renewals, supplements,
consolidations and replacements thereof, provided, however, that Tenant's
occupancy of the Premises shall not be disturbed, except as otherwise provided
herein. Notwithstanding the foregoing, Landlord shall have the right to
subordinate or cause to be subordinated to this Lease any such ground leases,
underlying leases or liens. If any ground lease or underlying lease terminates
for any reason or any mortgage or other security instrument is foreclosed or a
conveyance in lieu of foreclosure is made for any reason, Tenant shall,
notwithstanding any subordination, attorn to and become the tenant of the
successor in interest to Landlord at the option of such successor in interest.
Tenant covenants and agrees to execute and deliver, within ten (10) calendar
days after demand by Landlord and in the form reasonably requested by Landlord
and reasonably acceptable to Tenant, any additional documents evidencing the
priority or subordination of this Lease with respect to any such ground leases,
underlying leases, mortgages, or other security instruments. Landlord will
reasonably cooperate with Tenant in obtaining a subordination, nondisturbance
and attornment agreement in a form reasonably acceptable to Landlord, Tenant and
Landlord's lender, at Tenant's sole cost and expense, including without
limitation, Tenant shall pay any fee required by Landlord's lender in connection
with obtaining such agreement.

        14. Inability to Perform.

               14.1 Except to the extent expressly provided herein, if, by
reason of acts of God, governmental restrictions, strikes, labor disturbances,
shortages of materials or supplies or any other cause or event beyond Landlord's
reasonable control, Landlord is (i) unable to furnish or is delayed in
furnishing any utility or service required to be furnished by Landlord under the
provisions of Article 19, any other Article of this Lease, or any collateral
instrument, (ii) unable to perform or make or is delayed in performing or making
any installations, decorations, repairs, alterations, additions or improvements,

                                      -12-
<PAGE>   14
required to be performed or made under this Lease or under any collateral
instrument, or (iii) unable to fulfill or is delayed in fulfilling any of
Landlord's other obligations under this Lease or any collateral instrument, no
such excused inability or delay shall (a) constitute an actual or constructive
eviction, in whole or in part, (b) entitle Tenant to any abatement or diminution
of Rent or Additional Charges except as provided in Section 19.3, (c) relieve
Tenant from any of its obligations under this Lease, or (d) impose any liability
upon Landlord or its agents by reason of inconvenience or annoyance to Tenant or
by reason of injury to or interruption of Tenant's business, or otherwise.
Tenant hereby waives and releases its right to terminate this Lease under
Section 1932(1) of the California Civil Code or under any similar law, statue or
ordinance now or hereafter in effect, except to the extent expressly provided
herein.

        15. Destruction.

               15.1 Repair. If any portion of the Building is damaged by fire,
earthquake, flood or other casualty (the "Damaged Property") to the extent that
such portion is rendered unusable by Tenant or renders a portion of the Premises
unusable and the Damaged Property can, in Landlord's reasonable opinion, be
repaired within one hundred eighty (180) days after the date of damage (under a
normal construction schedule not requiring the payment of overtime or premium),
Landlord shall proceed immediately to make such repairs in accordance with
Section 15.4 below (unless this Lease is terminated pursuant to this Article
15). Landlord's opinion shall be delivered to Tenant within thirty (30) days
after the date of the damage. Landlord shall consider and include as part of its
evaluation, the period of time necessary to obtain the required approvals of the
mortgagee and insurer and governmental entities, to order and obtain materials,
and to engage contractors. Notwithstanding anything to the contrary herein, the
total destruction of the Building shall automatically terminate this Lease as of
the date of destruction.

               15.2 Tenant's Right to Terminate. If such damage causes all or
any material portion of the Premises to be unusable by Tenant and (i) in
Landlord's reasonable opinion damage to the Damaged Property cannot be repaired
within one hundred eighty (180) days from the date of the damage (under a normal
construction schedule not requiring the payment of overtime or premium), Tenant
may terminate this Lease by delivery of written notice to Landlord within thirty
(30) days after the date on which Landlord's opinion is delivered to Tenant.
Upon termination, Rent and Additional Charges pursuant to Article 4 shall be
apportioned as of the date of the damage and all prepaid Rent and Additional
Charges pursuant to Article 4 shall be repaid.

               15.3 Landlord's Right to Terminate. In the event (i) the
uninsured portion of any damage to or destruction of the Building equals or
exceeds twenty-five percent (25%) of the replacement cost of the Building; or
(ii) the Lease will expire within one (1) year from the date of any material
damage to or destruction of the Premises and Tenant fails to extend the term in
accordance with any right expressly granted in this Lease within thirty (30)
days after the date of damage, Landlord may elect to terminate this Lease as
hereinafter provided. Landlord may terminate this Lease for the reason stated in
clause (i) of this Section, by delivery of written notice to Tenant within
thirty (30) days after the date of damage or destruction; and for the reason
stated in clause (ii) of this Section, by delivery of written notice to Tenant
within forty-five (45) days after the date of the damage or destruction. For
purposes of the foregoing, the uninsured portion shall not include a deficiency
in insurance proceeds to the extent caused by (i) Landlord's failure to carry
insurance required by this Lease; (ii) Landlord's election to carry required
insurance in an amount less than 100% of the replacement costs; or (iii)
Landlord's election to obtain insurance with a deductible amount or coinsurance
obligations.

               15.4 Extent of Repair Obligations. If this Lease is not
terminated as a result of any damage to the Premises covered by Section 15.1
above, Landlord's repair obligation shall extend to the structure of the
Building and all improvements (except those constructed or installed by Tenant,
including the Tenant Improvements) in the Premises at the completion of
construction of the Tenant Improvements, and Tenant shall repair all other
portions of the Premises which Tenant is required to insure under this Lease
(including without limitation the Tenant Improvements, Alterations, and Tenant's
trade fixtures, equipment, furnishings and other personal property); provided,
that if such damage to the Premises occurs within the last year of the Term,
Tenant may, but shall not be obligated to, repair Tenant's trade fixtures,
equipment, furnishings and other personal property. All such repairs shall be
performed in a good and workmanlike manner, with due diligence, and shall
restore the items repaired to substantially the same usefulness,
design and construction as existed immediately before the damage. All work by
Tenant shall be performed in accordance with the requirements of Section 11.2
above. Notwithstanding anything to the contrary in this Lease, Landlord shall
not be obligated to expend on such repairs more than the amount of insurance
proceeds actually received by Landlord on account of the damage; provided,
however, that Landlord shall complete all such repairs if Tenant pays to
Landlord in advance the difference between the cost of such repairs and the
amount of insurance proceeds received by Landlord on account of the damage. In
the event of any termination of this Lease, the proceeds from any insurance paid
by reason of damage to or destruction of the Building Real Property or any
portion thereof, or any other element, component or property insured by Landlord
shall belong to and be paid to Landlord, except for proceeds payable under
Tenant's fire insurance policies or for Tenant's trade fixtures. In the event of
a casualty covered by insurance which Landlord is required to carry under this
Lease, Rent and Additional charges under Article 4 above shall abate commencing
on the date of the casualty and ending when the Damaged Property is repaired as
aforesaid by Landlord and the Premises are delivered to Tenant. The extent of
the abatement shall be based upon the portion of the Premises rendered
untenantable, inaccessible or unfit for use in a reasonable business manner for
the purposes stated in this Lease.
                                      -13-
<PAGE>   15

               15.5 Arbitration. If the parties are unable to agree upon the
appropriate abatement of Rent and Additional Charges pursuant to this Article 15
within thirty (30) days after repairs are completed, either party may submit the
dispute to arbitration in accordance with Section 30.18.

               15.6 Non-Application of Certain Statutes. The provisions of this
Lease, including this Article 15, constitute an express agreement between
Landlord and Tenant with respect to any and all damage to, or destruction of,
all or any part of the Premises, or any other portion of the Building. Any
statute or regulation of the State of California or any other governmental
authority or body, including, without limitation, Sections 1932(2) and 1933(4)
of the California Civil Code, with respect to any rights or obligations
concerning any such damage or destruction in the absence of an express agreement
between the parties, and any other statute or regulation relating to damage or
destruction of leased premises, now or hereafter in effect, shall have no
application to this Lease or any damage or destruction to all or any part of the
Premises or any other portion of the Building.

        16. Insurance.

               16.1 Insurance on Tenant's Property. Tenant shall provide
insurance coverage for all risks of physical loss or damage insuring the full
replacement value of the Tenant Improvements, Alterations, Tenant's trade
fixtures, furnishings, equipment, plate glass, signs and all other items of
personal property of Tenant.

               16.2 Tenant's Liability Insurance. Tenant shall procure at its
cost and expense and keep in effect during the term of this Lease broad form
commercial general liability insurance, and automobile liability insurance, each
with a minimum combined single limit of liability of at least Two Million
Dollars ($2,000,000), and statutory worker's compensation insurance with a Two
Million Dollars ($2,000,000) employer's liability limit covering all of Tenant's
employees. Such broad form commercial general liability insurance shall include,
without limitation, products and completed operations liability insurance, fire
legal liability insurance, contractual liability insurance applicable to all of
Tenant's indemnity obligations under this Lease, and such other coverage as
Landlord may reasonably require from time to time. At Landlord's request, Tenant
shall increase such insurance coverage to a level that is reasonable and
customary. If the parties are unable to agree on the amount that is reasonable
and customary, the matter shall be determined by arbitration pursuant to Section
30.18 below.

               16.3 Form of Policies. All insurance policies required to be
carried by Tenant under this Lease shall (i) be written by companies rated A10
or better in "Best's Insurance Guide" and authorized to do business in
California, (ii) name Landlord, SENTRE Partners, Inc. and any other parties
designated by Landlord as additional insureds, (iii) as to liability coverages,
be written on an "occurrences" basis, (iv) provide that Landlord shall receive
at least thirty (30) days notice from the insurer before any cancellation or
change in coverage, and (v) contain a provision that no act or omission of
Tenant shall affect or limit the obligation of the insurer to pay the amount of
any loss sustained. Each such policy shall contain a provision that such policy
and the coverage evidenced thereby shall be primary and non-contributing with
respect to any policies carried by Landlord and that any coverage carried by
Landlord shall be excess insurance. Any deductible amounts under any insurance
policies required hereunder shall be subject to Landlord's prior written
approval (which shall not be unreasonably withheld) and in any event Tenant
shall be liable for payment of same in the event of any casualty. Tenant shall
deliver reasonably satisfactory evidence of such insurance to Landlord on or
before the Commencement Date, and thereafter at least thirty (30) days before
the expiration dates of expiring policies; and, in the event Tenant shall fail
to procure such insurance or to deliver reasonably satisfactory evidence thereof
within five (5) business days after written notice from Landlord of such
failure, Landlord may, at its option and in addition to Landlord's other
remedies in the event of a default by Tenant hereunder, procure such insurance
for the account of Tenant, and the cost thereof shall be paid to Landlord as
Additional Charges. Notwithstanding the foregoing, if any such insurance expires
without having been renewed by Tenant, Landlord shall have the option in
addition to Landlord's other remedies to procure such insurance for the account
of Tenant immediately and without notice to Tenant, and the cost thereof shall
be paid to Landlord as Additional Charges. The limits of the insurance required
under this Lease shall not limit the liability of Tenant. Tenant's obligation to
carry insurance set forth herein shall commence on the Commencement Date.

               16.4 Compliance with Insurance Requirements. Tenant shall not do
anything, or suffer or permit anything to be done, in or about the Premises that
shall invalidate or be in conflict with the provisions of any fire or other
insurance policies covering the Building or any property located therein.
Tenant, at Tenant's expense, shall comply with, and shall cause all occupants of
the Premises to comply with, all applicable customary rules, orders, regulations
or requirements of any board of fire underwriters or other similar body.

               16.5 Landlord's Insurance. Landlord shall purchase and keep in
full force and effect "special form coverage" insurance covering the Project in
an amount equal to 100% of the full replacement value of the Project
improvements at the time of the loss, and at least Three Million Dollars
($3,000,000.00) in liability insurance with respect to the Project, including
coverage for Project Common areas.

<PAGE>   16
17.  Eminent Domain.

     17.1 Effect of Taking. If all of the Premises is condemned or taken in any
manner for public or quasi-public use, or any transfer of the Premises is made
in avoidance of an exercise of the power of eminent domain (each of which events
shall be referred to as a "taking"), this Lease shall automatically terminate as
of the date of the vesting of title as a result of such taking. If a part of the
Premises is so taken, this Lease shall automatically terminate as to the portion
of the Premises so taken as of the date of the vesting of title as a result of
such taking. If such portion of the Real Property is taken as to render the
Building incapable of economically feasible operation, this Lease may be
terminated by Landlord, as of the date of the vesting of title as a result of
such taking, by written notice to Tenant within sixty (60) days following notice
to Landlord of the date on which said vesting will occur. If such portion of the
Premises is taken as to render the Premises or the remaining portion thereof
unusable by Tenant, this Lease may be terminated by Tenant as of the date of the
vesting of title as a result of such taking, by written notice to Landlord
within sixty (60) days following notice to Tenant of the date on which said
vesting will occur. If this Lease is not terminated as a result of any taking,
Landlord shall restore the Building to an architecturally whole unit; provided,
however, that Landlord shall not be obligated to expend on such restoration more
than the amount of condemnation proceeds actually received by Landlord, unless
Tenant pays to Landlord in advance the difference between the cost of such
restoration and the amount of the condemnation proceeds received by Landlord.

     17.2 Award. Landlord shall be entitled to the entire award for any taking,
including, without limitation, any award made for the value of the leasehold
estate created by this Lease. No award for any partial or entire taking shall be
apportioned, and Tenant hereby assigns to Landlord any award that may be made in
any taking, together with any and all rights of Tenant now or hereafter arising
in or to such award or any part thereof, provided, however, that nothing
contained herein shall be deemed to give Landlord any interest in or to require
Tenant to assign to Landlord any separate award made to Tenant for its
relocation expenses, the taking of personal property and fixtures belonging to
Tenant, the unamortized value of improvements made or paid for by Tenant or the
interruption of or damage to Tenant's business.

     17.3 Abatement of Rent. In the event of a partial taking that does not
result in a termination of this Lease as to the entire Premises, the Rent shall
abate in proportion to the portion of the Premises taken or rendered
untenantable by such taking. Tenant hereby waives and releases its rights under
Section 1265.130 of the California Code of Civil Procedure or any similar
statute now or hereafter in effect.

     17.4 Temporary Taking. If all or any portion of the Premises is taken for a
limited period of time, this Lease shall remain in full force and effect;
provided, however, that the Rent and Additional Charges payable pursuant to
Article 4 above shall abate during such limited period in proportion to the
portion of the Premises taken by such taking. Landlord shall be entitled to
receive the entire award made in connection with any such temporary taking. Any
temporary taking of all or a portion of the Premises which continues for twelve
(12) months shall be deemed a permanent taking of the Premises or such portion.

     17.5 Taking of Parking Facilities. Subject to the terms of this Article 17,
if all or a material portion of the parking facilities of the Project is taken,
and provided that reasonable alternative parking is not available, this Lease
may be terminated by Tenant as of the date of the vesting of title as a result
of such taking, by written notice to Landlord within sixty (60) days following
notice to Tenant of the date on which said vesting will occur, provided that
Landlord shall have thirty (30) days following receipt of such termination
notice to make available to Tenant reasonable alternative parking, in which
event such termination notice shall be deemed of no further force and effect,
and the terms of this Lease shall remain in full force and effect.

18.  Assignment.

     18.1 Consent Required. Notwithstanding the provisions of Section 30.4
below, neither Tenant nor any sublessee or assignee of Tenant shall, directly or
indirectly, voluntarily or by operation of law, sell, assign, encumber pledge or
otherwise transfer or hypothecate all or any part of the Premises or Tenant's
leasehold estate hereunder (each such act is herein referred to as an
"Assignment"), or sublet the Premises or any portion thereof or permit the
Premises to be occupied by anyone other than Tenant (each such act is herein
referred to as a "Sublease"), without Landlord's prior written consent in each
instance, which consent shall not be unreasonably withheld or delayed. Any
Assignment or Sublease that is not in compliance with this Article 18 shall be
void and, at the option of Landlord, shall constitute a material default by
Tenant under this Lease. The acceptance of Rent or Additional Charges by
Landlord from a proposed assignee, sublessee or occupant of the Premises shall
not constitute consent to such Assignment or Sublease by Landlord. Seventy
percent (70%) of the total amount paid to Tenant which is attributable to this
Lease in connection with any Assignment and seventy percent (70%) of the excess
of the total amount of rent and other consideration paid under or in
consideration for any Sublease over the Rent and Additional Charges payable
hereunder, shall be payable to Landlord as Additional Charges, after deducting
Tenant's actual, incurred costs for reasonable and customary brokerage
commissions and tenant improvements in connection with such assignment or
subletting. The right to such amounts is expressly reserved from the grant of
Tenant's leasehold estate for the benefit of Landlord. Tenant shall
<PAGE>   17
use reasonable diligent efforts to collect all such amounts. Landlord shall have
the right from time to time, upon reasonable advance notice, to review Tenant's
records relating to any such amounts payable to or received by Tenant.

               18.2 Notice. Any request by Tenant for Landlord's consent to a
specific Assignment or Sublease shall include (a) the name of the proposed
assignee, sublessee or occupant, (b) the nature of the proposed assignee's
sublessee's or occupant's business to be carried on in the Premises, (c) a copy
of the proposed Assignment or Sublease, and (d) such financial information (in
the event of an Assignment) and such other information as Landlord may
reasonably request concerning the proposed assignee, sublessee or occupant or
its business. At any time within fifteen (15) days after Landlord's receipt of
Tenant's full submission (including any additional information Landlord may
request), Landlord may, by written notice to Tenant, elect in its sole
discretion either to: (i) consent to the proposed transfer; (ii) reasonably
withhold its consent to the proposed transfer; (iii) except as to the Permitted
Transfers set forth in Section 18.5 below, or except as to any public or private
offerings of Tenant's stock, terminate this Lease in its entirety in the case of
a proposed assignment or with respect to the proposed sublease premises in the
case of a proposed sublease of fifty percent (50%) or more of the Premises (in
which case the rent, parking rights, and any other rights or obligations under
this Lease which are based upon the square footage of the Premises shall be
proportionately adjusted, and Tenant shall pay the cost of any alterations
necessary to divide the proposed sublease premises from the remainder of the
Premises), which termination shall take effect on the date set forth in
Landlord's notice but in no event more than ninety (90) days after Landlord has
so notified Tenant. Landlord may then enter into a new lease with the intended
assignee or sublessee, or any other person, on whatever terms the parties may
negotiate. In such a case, Tenant is not entitled to any portion of the profit,
if any, realized by Landlord from the termination and reletting; or (iv) take
such transfer, as applicable, from Tenant in its own name on the same terms as
Tenant shall propose to enter into such transfer (but Landlord shall have the
unqualified right to re-assign, sublet, or sub-sublet without Tenant's consent
and Landlord may offset any sums due or to become due to Tenant under any
transfer against any sums due to Landlord under this Lease). If Landlord fails
to respond in writing within such fifteen (15) day period, and further fails to
respond within five (5) business days after Landlord's actual receipt of written
notice from Tenant of Landlord's failure to respond within such period, Tenant's
request shall be deemed approved.

               18.3 No Release. No consent by Landlord to any Assignment or
Sublease by Tenant, and no specification in this Lease of a right of Tenant's to
make any Assignment or Sublease, shall relieve Tenant of any obligation to be
performed by Tenant under this Lease, whether arising before or after (a) the
Assignment or Sublease or (b) any extension of the Term (pursuant to exercise of
an option granted in this Lease). The consent by Landlord to any Assignment or
Sublease shall not relieve Tenant or any successor of Tenant from the obligation
to obtain Landlord's express written consent to any other Assignment or
Sublease.

               18.4 Cost of Processing Request. Tenant shall pay to Landlord the
actual and reasonable amount of Landlord's cost of reviewing and processing
every proposed Assignment or Sublease (including, without limitation, reasonable
accountants' and attorneys' fees) and the reasonable amount of all direct and
indirect expenses incurred by Landlord arising from any assignee, occupant or
sublessee taking occupancy (including, without limitation, freight elevator
operation for moving of furnishings and trade fixtures, security service,
janitorial and cleaning service, and rubbish removal of service) up to a maximum
of $1,000.

               18.5 Corporation or Partnership Transfers. Any sale or other
transfer, including without limitation by consolidation, merger or
reorganization, of a majority of the voting stock of Tenant or any beneficial
interest therein, if Tenant is a corporation, or any sale or other transfer of a
majority of the general partnership interests in Tenant or any beneficial
interest therein, if Tenant is a partnership, shall be an Assignment for
purposes of this Lease. Notwithstanding the foregoing or any other provision
herein, Tenant shall have the right to assign this Lease or sublet the Premises
without Landlord's consent to any entity which controls, is controlled by, or is
under common control with Tenant, or which acquires substantially all of
Tenant's stock or assets by merger or consolidation whether or not Tenant is the
surviving entity ("Permitted Transfers"); provided, that the proposed transferee
shall have a net worth equal to or greater than that of Tenant at the time
Tenant executed this Lease, and further provided, that Tenant shall provide to
Landlord a copy of such assignment or subletting agreement on or before ten (10)
days prior to such assignment or subletting. Notwithstanding the foregoing,
public offerings of Tenant's stock as well as public transfers of Tenant's stock
over a recognized securities exchange or over-the-counter market shall not
constitute an assignment under this Lease.

               18.6 Assumption of Obligations. Each assignee or other transferee
of Tenant's interest hereunder, other than Landlord, shall assume, as provided
in this Section, all obligations of Tenant under this Lease and shall be and
remain liable jointly and severally with Tenant for the payment of Rent and
Additional Charges, and for the performance of all the terms, covenants,
conditions and agreements herein contained on Tenant's part to be performed for
the Term. Each sublessee of all or any portion of the Premises shall agree in
writing for the benefit of Landlord (a) to comply with and agree to those
provisions of this Lease as are reasonably designated by Landlord, and (b) that
such sublease (and all further subleases of any portion of the Premises) shall
terminate upon any termination of this Lease, regardless of whether or not such
termination is voluntary. No Assignment or Sublease shall be valid or effective
unless the assignee or sublessee or Tenant shall deliver to Landlord a
fully-executed counterpart of the Assignment or Sublease and an instrument that
contains a covenant of assumption

                                      -16-
<PAGE>   18
by the assignee or agreement to perform Tenant's obligations, reasonably
satisfactory in substance and form to Landlord, consistent with the requirements
of this Section. The failure or refusal of the assignee to execute such
instrument of assumption shall not release or discharge the assignee from its
liability as set forth above.

               18.7 No Signs. Tenant shall not place or allow to be placed in,
on or about the Building or any other portion of the Project any sign or other
notice indicating Tenant's desire to assign this Lease or sublet the Premises.

               18.8 Upon Termination. In the event of a termination of this
Lease by reason of Tenant's default or in the event of a mutually agreed
termination, at Landlord's option, each sublessee of any portion of the Premises
shall attorn to Landlord. Each such sublessee shall be deemed to have agreed to
the provisions of this Section and any such Assignment or Sublease shall
specifically provide as such.

        19. Utilities and Services.

               19.1 Landlord to Furnish. Landlord shall furnish, subject to
reimbursement pursuant to Article 5 above, (a) heating, ventilation and air
conditioning to the Premises during the hours of 7:00 a.m. until 7:00 p.m.
Monday through Friday (excluding holidays), (b) automatic elevator service to
the floor or floors where the Premises are located at all times, and (c) water
for drinking, cleaning and washroom purposes only at those points of supply
shown on the approved plans for the Premises. Tenant shall be solely responsible
for and shall promptly pay all other utilities and services supplied to the
Premises to the extent such utilities and services are not part of the
Additional Charges. Tenant acknowledges and agrees that the Premises may share
electrical meters with other tenants, and Tenant shall reimburse Landlord, along
with its Monthly Basic Rent and Additional Charges, for Tenant's prorata share
of the costs of any such electrical service (calculated by dividing the Rentable
Area of the Premises by the total rentable area covered by each such meter);
provided that at no cost to Landlord, Tenant, as part of the Tenant Improvements
and subject to the terms of Articles 7 and 31 including deduction of such costs
from the T.I. Allowance, or during the Term as Alterations subject to the
provisions of Article 10, may install separate electrical meters for the
Premises and may separately zone (for purposes of HVAC) the Premises. Tenant
shall, at its cost, be responsible for all janitorial service for the Premises.
Except as otherwise provided herein, and subject to reimbursement pursuant to
Article 5 above, Landlord shall at all times maintain all structural elements of
the Building (including, without limitation, the roof, roof membrane,
foundations, structural and exterior walls, window seals, skylights, roof vents
and smoke hatches) and all central mechanical systems of the Building
(including, without limitation, utilities, electrical and plumbing systems) in
good working order and condition.

               19.2 Excess Usage. Whenever heat generating machines or equipment
or lighting are used in the Premises by Tenant which materially affect the
temperature otherwise maintained by the air conditioning system, Landlord shall
have the right to install supplementary air conditioning facilities in the
Premises or otherwise modify the ventilating and air conditioning system serving
the Premises, and the reasonable cost of such facilities and modifications shall
be borne by Tenant. Tenant also shall pay the cost of providing all heating or
cooling energy to the Premises during hours other than those specified in clause
(a) of Section 19.1 above; such cost to be charged at the current rate of $12.00
per hour, which rate is subject to change. Landlord shall furnish such
after-hours heating or cooling energy upon at least twenty-four (24) hours
advance notice from Tenant; provided, that at least two (2) hours advance notice
from Tenant shall only be required during the following business hours: Monday
to Friday 8a.m. to 5p.m. If Tenant (a) installs lighting or other equipment
which results in an average electrical load per floor in the Premises in excess
of the 6.6 watts per square foot of usable area of the Premises, or (b) uses
electrical power beyond the hours specified in Section 19.1(a), Tenant shall pay
for the actual cost of such excess power and the cost of installing any
additional risers or other facilities that may be necessary to furnish such
excess power to the Premises; provided, however, that Tenant shall have no right
to install lighting or other equipment which results in an average electrical
load per floor in excess of 6.6 watts per square foot of usable area of the
Premises without Landlord's prior written consent; provided that Landlord will
reasonably cooperate with Tenant in obtaining any additional power necessary for
Tenant's lighting and equipment, at Tenant's sole cost and expense. Tenant shall
pay in advance fifty percent (50%) of Landlord's reasonable estimate of any and
all costs for additional facilities and modifications which may be constructed
by Landlord under this Section (including without limitation the costs of labor,
materials, equipment, supervision and management fee), and Tenant shall pay the
remaining fifty percent (50%) subject to adjustment of final costs upon
completion.

               19.3 Interruption of Service. Landlord reserves the right to stop
the service of the heating, ventilating, air conditioning, elevator, plumbing,
electrical or other mechanical systems or facilities in the Premises or Building
when necessary by reason of accident or emergency, or for repairs, alterations,
replacements or improvements that, in the reasonable judgment of Landlord, are
desirable or necessary, until such accident or emergency shall have been
corrected or such repairs, alterations, replacements or improvements shall have
been completed. In the event Tenant is unable to use the Premises due to any
such interruption in services for more than five (5) consecutive business days,
Tenant shall be entitled to an equitable abatement of Rent. Landlord shall give
Tenant reasonable advance notice of any such interruption of services when
reasonably possible, and shall restore such services as soon as reasonably
possible and in a manner so as to cause as little interference with Tenant's use
of the Premises as is reasonably possible; provided, however, that Landlord
shall not be obligated to perform work during other than normal business hours.
In addition, Landlord reserves the

                                      -17-
<PAGE>   19
right to limit, restrict or ration the use of water, electricity, gas or any
other form of energy or any other service or utility serving the Premises or the
Building, in compliance with the requirements of federal, state or local
governmental agencies or utilities suppliers in reducing energy or other
resources consumption. Tenant shall cooperate reasonably with any voluntary
energy conservation program initiated by Landlord in cooperation with the
efforts of federal, state or local governmental agencies or utilities suppliers
in reducing the consumption of energy or other resources.

               19.4 Security Systems and Programs. The parties acknowledge that
safety and security devices, services and programs provided by Landlord, if any,
while intended to deter crime and safety, may not in given instances prevent
theft or other criminal acts, or insure safety of persons or property. The risk
that any safety or security device, service or program may not be effective, or
may malfunction or be circumvented, is assumed by Tenant with respect to
Tenant's property and interests, and Tenant shall obtain insurance coverage to
the extent Tenant desires protection against criminal acts and other losses.
Tenant agrees to cooperate with any reasonable safety or security program
developed by Landlord or required by law.

               19.5 No Liability. Landlord shall not be liable or responsible
for any interruption in the services to be provided under this Article 19, or
for any interruptions of services occurring in connection with the making of
repairs, replacements or improvements to the Premises or the Building, except as
provided in 19.3 above.

        20. Default.

               20.1 Events Constituting Default Except as otherwise provided
herein, the failure to perform or honor any covenant, condition or other
obligation of Tenant or the failure of any representation made by Tenant under
this Lease (including Exhibits hereto) shall constitute a default hereunder by
Tenant upon expiration of the appropriate grace period hereinafter provided, if
any. Tenant shall have a period of three (3) business days from the date of
written notice from Landlord within which to cure any default in the payment of
Rent. Tenant shall have a period of ten (10) days from the date of written
notice from Landlord within which to cure any default in the payment of
Additional Charges. Tenant shall have a period of thirty (30) days from the date
of written notice from Landlord within which to cure any other default under
this Lease; provided, however, that with respect to any default (other than a
default which can be cured by the payment of money) that cannot reasonably be
cured within thirty (30) days, the default shall not be deemed to be uncured if
Tenant commences to cure within thirty (30) days from Landlord's notice,
continues to prosecute diligently the curing of such default and actually cures
such default within sixty (60) days after Landlord's notice.

               20.2 Remedies. Upon the occurrence of a default by Tenant that is
not cured by Tenant within the grace periods specified in Section 20.1, Landlord
shall have the following rights and remedies in addition to all other rights and
remedies available to Landlord at the law or in equity:

                      (a) The rights and remedies provided by California Civil
Code Section 1951.2, including, but not limited to, the right to terminate
Tenant's right to possession of the Premises and to recover (i) "the worth at
the time of award" (as defined in Section 20.2(f) below) of the unpaid Rent and
Additional Charges which shall have been earned at the time of termination; plus
(ii) the worth at the time of award of the amount by which the unpaid Rent and
Additional Charges which would have been earned after termination until the time
of award shall exceed the amount of loss of such Rent and Additional Charges
that Tenant proves could have been reasonably avoided; plus (iii) the worth at
the time of award of the amount by which the unpaid Rent and Additional Charges
for the balance of the term of this Lease after the time of award shall exceed
the amount of loss of such Rent and Additional Charges that Tenant proves could
be reasonably avoided; plus (iv) any other amount necessary to compensate
Landlord for all the detriment proximately caused by Tenant's failure to perform
its obligations under this Lease or which would be likely to result therefrom
(including, without limitation, attorneys' and accountants' fees, costs of
alterations of the Premises, interest costs and brokers' fees incurred upon any
reletting of the Premises);

                      (b) The rights and remedies provided by California Civil
Code Section 1951.4 (Landlord may continue the Lease in effect after Tenant's
breach and abandonment and recover Rent and Additional Charges as they become
due. Acts of maintenance or preservation, efforts to relet the Premises or the
appointment of a receiver upon Landlord's initiative to protect its interest
under this Lease shall not of themselves constitute a termination of Tenant's
right to possession;

                      (c) The right and power to enter the Premises and remove
therefrom all persons and property, to store such property in a public warehouse
or elsewhere at the cost of and for the account of Tenant, and to sell such
property and apply the proceeds therefrom pursuant to applicable California law.
In such event, Landlord may from time to time sublet the Premises or any part
thereof for such term or terms (which may extend beyond the Term) and at such
rent and such other terms as Landlord in its sole discretion may deem advisable,
with the right to make alterations and repairs to the Premises. Upon each such
subletting, rents received from such subletting shall be applied by Landlord,
first, to payment of any indebtedness other than Rent and Additional Charges due
hereunder from Tenant to Landlord; second, to the payment of any costs of such
subletting (including with limitation attorneys' and accountants' fees, costs of
alterations of the Premises, interests costs, and brokers' fees) and of any such
alterations and repairs; third, to payment of Rent and Additional Charges due
and unpaid hereunder,

                                      -18-
<PAGE>   20
and the residue, if any, shall be held by Landlord and applied in payment of
future Rent and Additional Charges as they become due hereunder. If any rental
or other charges due under such sublease shall not be promptly paid to Landlord
by the sublessee(s), or if such rentals received from such subletting during any
month are less than Rent and Additional Charges to be paid during that month by
Tenant hereunder, Tenant shall pay any such deficiency to Landlord as well as
any unpaid indebtedness other than Rent and Additional Charges due hereunder
from Tenant to Landlord and the costs of such subletting (including without
limitation attorneys' and accountants' fees, costs of alterations of the
Premises, interests costs and brokers' fees), and any other amounts due Landlord
under this Section. Such deficiency shall be calculated and paid monthly. For
all purposes set forth in this Section, Landlord is hereby irrevocably appointed
attorney-in-fact for Tenant, with power of substitution. No taking possession of
the Premises by Landlord shall be construed as an election on its part to
terminate this Lease unless a written notice of such intention is given to
Tenant. Landlord's subletting the Premises without termination shall not
constitute a waiver of Landlord's right to elect to terminate this Lease for
such previous breach;

                      (d) The right to have a court appointed receiver appointed
for Tenant, upon application by Landlord, to take possession of the Premises, to
apply any rental collected from the Premises and to exercise all other rights
and remedies granted to Landlord pursuant to Section 20.2(c); and

                      (e) The right to specific performance of any or all of
Tenant's obligations hereunder, and to damages for delay in or failure to such
performance.

                      (f) For purposes of Section 20.2(a) the "worth at the time
of award" of the amounts referred to in subparagraphs (i) and (ii) shall be
computed with interest at the Interest Rate per annum or the maximum rate
allowed by law; the "worth at the time of award" of the amount referred to in
subparagraph (iii) shall be computed by discounting such amount at the discount
rate of the Federal Reserve Bank of San Francisco at the time of the award plus
one percent (1%); and "Rent and Additional Charges" with respect to each month
shall be calculated by adding (a) one twelfth (1/12th) of the Rent payable for a
full lease year at the time of default, plus (b) the monthly average of the
Additional Charges payable by Tenant hereunder for the year immediately before
the year in which the default occurred, or if the default occurs in the first
year of the Term, Landlord's estimate of Additional Charges which would have
been payable monthly by Tenant during that year. For purposes of computing
amounts that would have accrued after the time of award, increases in Rent and
Additional Charges shall be projected based upon the average rate of inflation
from the Commencement Date through the time of award; provided, however, that in
no event shall Rent be deemed to decrease after the time of award, nor shall
Additional Charges under Article 5 be deemed to be less than zero.

               20.3 Remedies Cumulative The exercise of any remedy provided by
law or the provisions of this Lease shall not exclude other remedies unless they
are expressly excluded by this Lease. Tenant hereby waives any right of
redemption or relief from forfeiture following the termination of, or exercise
of any remedy by Landlord with respect to, this Lease.

               20.4 Recovery Against Landlord. Tenant shall look solely to
Landlord's interest in the Building Real Property (including any proceeds of
sale of the Building Real Property and insurance proceeds received by Landlord
with respect to the Building Real Property) for the recovery as provided under
applicable law of any judgment against Landlord; provided, however, that Tenant
shall not be entitled to recover out of any insurance proceeds received by
Landlord which Landlord is applying or has a good faith intention to apply to
work on the Building. Landlord, or if Landlord is a partnership, its partners
whether general or limited, or if Landlord or any constituent partner or
Landlord is a corporation, its directors, officers and shareholders, shall never
be personally liable for any such judgment.

               20.5 Events of Default by Landlord. The failure by Landlord to
observe or perform any of the covenants, conditions, or provisions of this Lease
to be observed or performed by Landlord, where such failure shall continue for a
period of thirty (30) days after written notice thereof by Tenant to Landlord,
shall be deemed to be a default by Landlord under this Lease, provided, however,
that if the nature of Landlord's default is such that more than thirty (30) days
are reasonably required for its cure, then Landlord shall not be deemed to be in
default if Landlord commences such cure within said thirty (30) day period and
thereafter diligently prosecutes such cure to completion, provided that the
default shall actually be cured within one hundred eighty (180) days after
notice. Notwithstanding the foregoing, Tenant shall give written notice of any
default by Landlord to all mortgagees under mortgages encumbering all or any
portion of the Building Real Property or any interest therein of which Tenant
has received written notice, and Landlord shall not be deemed to be in default
unless no mortgagee has commenced to cure such default or commenced foreclosure
proceedings within thirty (30) days (or such longer period as is reasonably
required, but not to exceed one hundred eighty (180) days) after such mortgagee
has received such notice.

        21. Insolvency or Bankruptcy.

               21.1 The occurrence of any of the following shall, at Landlord's
option, constitute a breach of this Lease by Tenant: (i) the appointment of a
receiver to take possession of all or substantially all of the assets of Tenant
or the Premises, (ii) an assignment by Tenant for the benefit of creditors,
(iii) any action taken or suffered by Tenant under any insolvency, bankruptcy,
reorganization, moratorium or

                                      -19-
<PAGE>   21
other debtor relief act or statute, whether now existing or hereafter amended or
enacted, (iv) the filing of any voluntary petition in bankruptcy by Tenant, or
the filing of any involuntary petition by Tenant's creditors, which involuntary
petition remains undischarged for a period of thirty (30) days, (v) the
attachment, execution or other judicial seizure of all or substantially all of
Tenant's assets or the Premises, if such attachment or other seizure remains
undismissed or undischarged for a period of ten (10) business days after the
levy thereof, (vi) the admission by Tenant in writing of its inability to pay
its debts as they become due, (vii) the filing by Tenant of any answer admitting
or failing timely to contest a material allegation of a petition filed against
Tenant in any proceeding seeking reorganization, arrangement, composition,
readjustment, liquidation or dissolution of Tenant or similar relief, or (viii)
if within thirty (30) days after the commencement of any proceeding against
Tenant seeking any reorganization, arrangement, composition, readjustment,
liquidation, dissolution or similar relief under any present or future statue,
law or regulation, such proceeding shall not have been dismissed. Upon the
occurrence of any such event or at any time thereafter, this Lease shall
terminate five (5) days after written notice of termination from Landlord to
Tenant. In no event shall this Lease be assigned or assignable by operation of
law or by voluntary or involuntary bankruptcy proceedings or otherwise, and in
no event shall this Lease or any right or privileges hereunder be an asset of
Tenant under any bankruptcy, insolvency or reorganization proceedings. If, upon
the occurrence of any of the events enumerated above, under applicable law
Tenant or the trustee in bankruptcy has the right to affirm this Lease and
continue to perform the obligations of Tenant hereunder, Tenant or such trustee
shall, in such time period as may be permitted by the bankruptcy court having
jurisdiction, cure all defaults of Tenant outstanding hereunder as of the date
of the affirmance of this Lease and provide to Landlord such adequate assurances
as may be necessary to ensure Landlord of the continued performance of Tenant's
obligations under this Lease. Notwithstanding the provisions of Section 20.1,
there shall be no cure periods for any breach or default under this Article 21.

        22. Fees and Expenses: Indemnity: Payment.

               22.1 Landlord's Right to Remedy Defaults. If Tenant shall default
in the performance of any of its obligations under this Lease after notice of
expiration of the applicable cure period, if any, Landlord, at any time
thereafter and without additional notice, may remedy such default for Tenant's
account and at Tenant's expense, without thereby waiving any other rights or
remedies of Landlord with respect to such default. Notwithstanding the
foregoing, Landlord shall have the right to cure any failure by Tenant to
perform any of its obligations under this Lease without notice to Tenant if such
failure results in an immediate threat to life or safety of any person, or
impairs the Building or its efficient operation.

               22.2 Indemnity. Subject to the provisions of Section 15.6 and
except to the extent caused by the gross negligence or wilful misconduct of the
party seeking indemnification, Tenant shall indemnify Landlord, all partners of
any partnership constituting Landlord, and their respective officers, directors,
shareholders, employees, servants and agents, all mortgagees of Landlord's
interest in all or any portion of the Building Real Property, and the lessor or
lessors under all ground or underlying leases (sometimes collectively referred
to herein as "Related Entities") against and save Landlord and Related Entities
harmless from and defend Landlord and Related Entities through attorneys
reasonably satisfactory to Landlord which may include in-house attorneys) from
and against any and all claims, loss, cost liability, damage and expense
including, without limitation, penalties, fines and reasonable attorneys' fees,
to the extent incurred in connection with or arising from (a) any default by
Tenant in the observance or performance of any of the terms, covenants,
conditions or other obligations of this Lease to be observed or performed by
Tenant, or the failure of any representation made by Tenant in this Lease, (b)
the use or occupancy or manner of use or occupancy of the Premises by Tenant or
any person occupying the Premises, (c) any occurrence or happening on the
Premises between the Commencement Date and the time Landlord has accepted the
surrender of the Premises after the expiration or termination of this Lease, (d)
any negligence or wilful misconduct of Tenant or any person claiming through or
under Tenant, or of the contractors, subcontractors, agents, servants,
employees, or licensees of Tenant or any person claiming through or under Tenant
(collectively "Tenant's Agents") in the Premises or anyone in the Premises
(other than Landlord or Landlord's agents, employees or contractors), including
without limitation, any negligence or wilful misconduct in the making or
performing of any Alterations, (e) any negligence or wilful misconduct of Tenant
or any subtenant of the Premises or any of their respective employees while on
the Building Real Property, (f) Landlord's inability to obtain access to any
portion of the Premises with respect to which Landlord has not been furnished a
key (if locked) or access has been otherwise restricted, or (g) the use by
Tenant or any of Tenant's Agents of any Project Common Area or Building Common
Area. Landlord shall indemnify, protect, defend and hold Tenant harmless against
and from any and all claims, costs, liabilities, actions and damages (including,
without limitation, attorneys' fees and costs) arising from or out of the gross
negligence or wilful misconduct of Landlord or Landlord's agents, employees or
contractors during the Term of this Lease in or about the Premises.

               22.3 Assumption of Risk. Neither Landlord nor any Related
Entities shall be liable for any damage or damages of any nature whatsoever to
persons or property caused by explosion, fire, theft or breakage, vandalism,
falling plaster, by sprinkler, drainage or plumbing systems, or air conditioning
equipment, by failure for may cause to supply adequate drainage, by the
interruption of any public utility or service, by steam, gas, electricity,
water, rain or other substances leaking, issuing or flowing into any part of the
Premises, by natural occurrence, acts of the public enemy, riot, strike,
insurrection, war, court order, requisition or order of governmental body or
authority, or by anything done or omitted to be done by any tenant, occupant or
person in the Building, it being agreed that Tenant shall be responsible for
obtaining appropriate insurance to protect its interests.

                                      -20-
<PAGE>   22
               22.4 Payment of Sums Due. Except as otherwise provided, Tenant
shall pay to Landlord, within thirty (30) days after delivery by Landlord to
Tenant of bills or statements therefor, all Additional Charges and reasonable
expenditures made and reasonable monetary obligations incurred by Landlord in
collecting or attempting to collect the Rent, any Additional Charges or any
other sum actually due under this Lease or in enforcing or attempting to enforce
any rights of Landlord under this Lease or pursuant to law, including without
limitation reasonable attorneys' fees.

               22.5 Interest On Past Due Obligations; Service Charge. Unless
otherwise specifically provided herein, any amount due from Tenant to Landlord
under this Lease which is not paid within three (3) business days from the date
when due shall bear interest from the due date until paid at the lesser of the
highest rate then permitted by law or a rate per annum which is equal to four
percent (4%) plus the highest rate identified by Bank of America NT&SA as its
"reference rate" between the date such amount was due and the date such payment
was received. In addition, Tenant shall pay a service charge equal to five
percent (5%) of any amount which is not paid within the applicable grace period
specified in Section 20.1, to compensate Landlord for additional bookkeeping and
administrative expenses and lost investment opportunities which are likely to
result from such late payment. The payment of such interest or service charge
(or both) shall not alone excuse or cure any default under the Lease.

        23. Access to Premises.

               23.1 Landlord's Right to Enter. Landlord reserves for itself and
its agents, employees and independent contractors the right to enter the
Premises at all reasonable times (upon reasonable telephonic notice) to inspect
the Premises, to supply any service to be provided by Landlord to Tenant
hereunder, to show the Premises to prospective purchasers, mortgagees or (during
the last twelve (12) months of the Lease only) tenants, to post notices of
nonresponsibility, to determine whether Tenant is complying with its obligations
under this Lease, and to alter, improve or repair the Premises or any other
portion of the Building. Landlord's right to enter the Premises shall include
the right to grant access to the Premises to governmental or utility employees.
Landlord may erect use and maintain scaffolding, pipes, conduits, and other
necessary structures in and through the Premises or any other portion of the
Building where reasonably required by the character of the work to be performed
in making repairs or improvements, provided that the entrance to the Premises
shall not be blocked thereby, and that there is no unreasonable interference
with the business of Tenant. In the event of an emergency Landlord shall have
the right to enter the Premises at any time without notice. Except for losses
attributable to the gross negligence or wilful misconduct of Landlord or
Landlord's employees, agents or contractors, Tenant hereby waives any claim for
damages for any injury or inconvenience to or interference with Tenant's
business, any loss of occupancy or quiet enjoyment of the Premises, any right to
abatement or Rent or Additional Charges, or any other loss occasioned by
Landlord's exercise of any of its rights under this Article 23. Any entry to the
Premises or portions thereof obtained by Landlord in accordance with this
Article 23 shall not be construed or deemed to be a forcible or unlawful entry
into, or a detainer of, the Premises, or an eviction, actual or constructive, of
Tenant from the Premises or any portion thereof. Landlord shall perform all work
pursuant to this Section as quickly as is reasonably possible and in a manner
designed to cause as little interference with Tenant's use of the Premises as is
reasonably possible; provided, however, that Landlord shall not be obligated to
perform work during other than normal business hours. Tenant waives all rights
to consequential damages (including without limitation damages for lost profits
and lost opportunities) arising in connection with Landlord's exercise of its
right under this Section.

               23.2 Means of Entry. Landlord shall have the right to use any and
all means that Landlord may deem reasonably necessary or proper under the
circumstances to open doors in an emergency, in order to obtain entry to any
portion of the Premises.

        24. Notices. Except as otherwise provided in this Lease, any payment
required to be made and any bills, statements, notices, demands, requests or
other communications given or required to be given under this Lease shall be
effective only if rendered or given in writing, sent by personal delivery or
registered or certified mail, return receipt requested, or by overnight courier
service, addressed (a) to Tenant at the Premises, (b) to Landlord c/o SENTRE
Partners, Inc., 9605 Scranton Road, Suite 102, San Diego, California 92121, or
(c) to such other address as either Landlord or Tenant may designate as its new
address in California for such purpose by notice given to the other in
accordance with the provisions of this Section. Any such bill, statement,
notice, demand, request or other communication shall be deemed to have been
rendered or given on the date of receipt or refusal to accept delivery.

        25. No Waiver. Neither this Lease nor any term or provision hereof may
be waived, and no breach thereof shall be waived, except by a written instrument
signed by the party against which the enforcement of the waiver is sought. No
failure by Landlord to insist upon the strict performance of any obligation of
Tenant under this Lease or to exercise any right, power or remedy consequent
upon a breach thereof, no acceptance of full or partial Rent or Additional
Charges during the continuance of any such breach, no course of conduct between
Landlord and Tenant, and no acceptance of the keys to or possession of the
Premises before the termination of the Term by Landlord or any employee of
Landlord shall constitute a waiver of any such breach or a waiver or
modification of any term, covenant or condition of this Lease or operate as a
surrender of this Lease. No waiver of any breach shall affect or alter this
Lease, but each and every term, covenant and condition of this Lease shall
continue in full force and effect with respect to any other then-existing or
subsequent breach thereof. No payment by Tenant

                                      -21-
<PAGE>   23
or receipt by Landlord of a lesser amount than the aggregate of all Rent and
Additional Charges then due under this Lease shall be deemed to be other than on
account of the first items of such Rent and Additional Charges then accruing or
becoming due, unless Landlord elects otherwise. No endorsement or statement on
any check and no letter accompanying any check of other payment of Rent or
Additional Charges in any such lesser amount and no acceptance by Landlord of
any such check or other payment shall constitute an accord and satisfaction.
Landlord may accept such check or payment without prejudice to Landlord's right
to recover the balance of such Rent or Additional Charges or to pursue any other
legal remedy.

        26. Tenant's Certificates.

               26.1 Tenant, at any time during the term of this Lease and from
time to time, within ten (10) business days after written request, shall
execute, acknowledge and deliver to Landlord, addressed (at Landlord' request)
to any prospective purchaser, ground or underlying lessor or mortgagee of any
part of the Building Real Property, an estoppel certificate in reasonable and
customary form and substance. Tenant's failure to do so within five (5) business
days after written notice from Landlord following such ten (10) business day
period shall be conclusive upon Tenant that all facts set forth in Landlord's
proposed certificate are true and correct. In addition, Tenant shall be liable
for all loss, cost or expense resulting from the failure of or delay in any sale
or funding of any loan or other transaction caused by Tenant's failure to timely
furnish any such certificate in reasonable and customary form and substance
within five (5) business days after written notice from Landlord following such
ten (10) day period. It is intended that any such certificate may be relied upon
by any prospective purchaser, ground or underlying lessor or mortgagee of all or
any part of the Building Real Property.

        27. Rules and Regulations.

               27.1 Tenant shall faithfully observe and comply with, and shall
cause all occupants of the Premises and Tenant's Agents to observe and comply
with, the rules and regulations, attached to this Lease as Exhibit C relating to
the Building and the Project Common Areas and all reasonable and
non-discriminating modifications thereof and additions thereto from time to time
put into effect by Landlord. Landlord shall not be responsible for the
nonperformance by any other tenant or occupant of the Project of any of such
rules and regulations. In the event of any conflict between any such rule or
regulation and this Lease, this Lease shall govern.

        28. Tenants Taxes.

               28.1 In addition to all other sums to be paid by Tenant under
this Lease, Tenant shall pay, before delinquency, any and all taxes levied or
assessed during the term of this Lease, whether now customary or within the
contemplation of the parties hereto, (a) upon, measured by or reasonably
attributable to the Tenant Improvements, equipment, furniture, fixtures and
other personal property located in the Premises, including without limitation
any Alterations, (b) upon or measured by Rent or Additional Charges, or both,
payable under this Lease, including without limitation any gross income tax or
excise tax levied by the City and County of San Diego, the State of California,
the Federal Government or any other governmental body with respect to the
receipt of such rental; (c) upon or with respect to the possession, leasing,
operation, management, maintenance, alteration, repair, use or occupancy by
Tenant of the Premises or any portion thereof; or (d) upon this transaction or
any document to which Tenant is a party creating or transferring an interest or
an estate in the Premises. Tenant shall reimburse Landlord upon demand for any
and all such taxes paid or payable by Landlord (other than state and federal,
personal or corporate income taxes measured by the net income of Landlord from
all sources).

        29. Corporate Authority. If either party signs as a corporation or
partnership or other entity, each of the persons executing this Lease on behalf
of such party does hereby covenant and warrant that such party is a duly
authorized and existing entity, that such party has and is qualified to do
business in California, that the entity has full right and authority to enter
into this Lease, and that each and both of the persons signing on behalf of the
entity is and are authorized to do so.

        30. Miscellaneous.

               30.1 Asbestos Disclosure. Tenant acknowledges that it has been
furnished with and has reviewed a copy of the two reports prepared by the Szaras
Company, dated September 12, 1991 and January 20, 1992, respectively, regarding
the presence of asbestos in the Project (the "Asbestos Reports"). The Asbestos
Reports are hereby accepted and approved by Tenant. Tenant acknowledges that
Landlord has not made any representations or warranties as to the content,
accuracy or completeness of the Asbestos Reports, and that Landlord has merely
provided the Asbestos Reports for the information of Tenant. Tenant shall not
maintain any physical contact with the affected area described in the Asbestos
Reports and shall prohibit Tenant's Agents from doing the same. Tenant shall
notify Tenant's Agents of the presence of asbestos and shall share copies of the
Asbestos Reports with all Tenant's Agents and shall comply with all governmental
laws and regulations relating to disclosure, notification and warnings with
respect to the contents of the Asbestos Reports.

               30.2 Financial Statements. Upon Landlord's written request from
time to time (not more frequently than once per year), Tenant shall promptly
furnish Landlord with financial statements reflecting

                                      -22-
<PAGE>   24
Tenant's then-current financial condition, in such form and detail as Landlord
may reasonably request; provided, however, that so long as the stock of tenant
is traded on a national exchange, Tenant may furnish an annual report instead of
financial statements. Landlord shall keep and maintain such financial statements
confidential, provided that Landlord may disclose such information as required
by law and to Landlord's attorneys, accountants, consultants and lenders.

               30.3 References. All personal pronouns used in this Lease,
whether used in the masculine, feminine or neuter gender, shall include all
other genders; the singular shall include the plural, and vice versa. The use
herein of the words "including" or "include" when following any general
statement, term or matter shall not be construed to limit such statement, term
or matter to the specific items or matters set forth immediately following such
word or to similar items or matters, whether or not nonlimiting language (such
as "without limitation", or "but not limited to", or words of similar import) is
used with reference thereto. All references to "mortgage" and "mortgage" shall
include deeds of trust and beneficiaries under deeds of trust, respectively. All
Exhibits referenced herein and attached to this Lease are hereby incorporated in
this Lease by this reference. The captions preceding the Sections and Articles
of this Lease have been inserted solely as a matter of convenience and such
captions in no way define or limit the scope or intent of any provision of this
Lease.

               30.4 Successors and Assigns. The terms, covenants and conditions
contained in this Lease shall bind and inure to the benefit of Landlord and
Tenant and except as otherwise provided herein, their respective personal
representatives and successors and assigns; provided, however, that upon the
sale, assignment or transfer by Landlord (or by any subsequent Landlord) of its
interest in the Building as owner or lessee, including any transfer upon or in
lieu of foreclosure or by operation of law, Landlord (or subsequent Landlord)
shall be relieved from all subsequent obligations or liabilities under this
Lease, and all obligations subsequent to such sale, assignment or transfer (but
not any obligations or liabilities that have accrued prior to the date of such
sale, assignment or transfer) shall be binding upon the grantee, assignee or
other transferee of such interest. Any such grantee, assignee or transferee, by
accepting such interest, shall be deemed to have assumed such subsequent
obligations and liabilities.

               30.5 Severability. If any provision of this Lease or the
application thereof to any person or circumstance shall, to any extent, be
invalid or unenforceable, the remainder of this Lease, or the application of
such provision to persons or circumstances other than those as to which it is
invalid or unenforceable, shall not be affected thereby, and each provision of
this Lease shall remain in effect and shall be enforceable to the full extent
permitted by law.

               30.6 Construction. This Lease shall be governed by the and
construed in accordance with the laws of the State of California applicable to
leases of real property made and entirely performed in California. Any actions
or proceedings brought under this Lease, or with respect to any matter arising
under or out of this Lease, shall be brought and tried only in courts located in
the City and County of San Diego, California (excepting appellate courts).

               30.7 Integration. The terms of this Lease (including the Exhibits
hereto) are intended by the parties as a final expression of their agreement
with respect to such terms as are included in this Lease and may not be
contradicted by evidence of any prior or contemporaneous agreement, arrangement,
understanding or negotiation (whether oral or written). The parties further
intend that this Lease constitutes the complete and exclusive statement of its
terms, and no extrinsic evidence whatsoever may be introduced in any judicial
proceeding involving this Lease. Neither Landlord nor Landlord's agents have
made any representations or warranties with respect to the Premises, the
Building, the Building Real Property, or any other portion of the Project or
this Lease except as expressly set forth herein. The language in all parts of
this Lease shall in all cases be construed as a whole and in accordance with its
fair meaning and not restricted for or against any party.

               30.8 Surrender. Upon the expiration or sooner termination of the
Term, Tenant will quietly and peacefully surrender to Landlord the Premises in
the condition in which they are required to be kept as provided in Articles 10
and 11, ordinary wear and tear excepted. Upon expiration or earlier termination
of this Lease, Tenant shall, immediately upon request of Landlord, execute,
acknowledge and deliver to Landlord a recordable deed quitclaiming to Landlord
any interest of Tenant in the Premises, the Building Real Property and this
Lease.

               30.9 Quiet Enjoyment. Upon Tenant paying the Rent and Additional
Charges and performing all of Tenant's obligations under this Lease, Tenant may
peacefully and quietly enjoy the Premises during the Term as against all persons
or entities claiming by or through Landlord; subject, however, to the provisions
of this Lease and to any mortgages or ground or underlying leases referred to in
Article 13.

               30.10 Holding Over. If Tenant shall hold over after the
expiration of the Term, Tenant shall pay Rent equal to one hundred fifty percent
(150%) of the Rent payable during the final full lease year (exclusive of
abatements, if any), together with an amount reasonably estimated by Landlord
for the monthly Additional Charges payable under this Lease, and shall otherwise
be on the terms and conditions herein specified so far as applicable (but
expressly excluding all renewal or extension rights). No holding over by Tenant
after the Term shall operate to extend the Term. In the event of any holding
over without Landlord's prior written consent, Tenant shall indemnify Landlord
against all claims for damages by any other tenant to whom Landlord may have
leased all or any part of the Premises commencing upon or

                                      -23-
<PAGE>   25

after the expiration of the Term. Any holding over with Landlord's written
consent shall be construed as a tenancy at sufferance or from month to month, at
Landlord's option. Any holding over without Landlord's written consent shall
entitle Landlord to reenter the Premises as provided in Article 20, and to
enforce all rights and remedies provided by law or this Lease.

               30.11 Time of Essence. Time is of the essence of each and every
provision of this Lease.

               30.12 Broker's Commissions. Each party represents and warrants to
the other that it has not entered into any agreement or incurred or created any
obligation which might require the other party to pay any broker's commission,
finder's fee or other commission or fee relating to the leasing of the Premises,
except for an agreement by Landlord to pay The Irving Hughes Group, Inc. a
commission of three percent (3%) of the Net Aggregate Rent during the Initial
Term of this Lease (50% of such commission shall be paid upon execution of this
Lease by Landlord and Tenant, and 50% of such commission shall be paid upon the
Commencement Date of this Lease). The term "Net Aggregate Rent" for purposes of
this Section 30.12 shall mean the sum equal to the total Rent due and payable by
Tenant for the Premises during the Initial Term of this Lease less any Rent
abated by Landlord herein. Each party shall indemnify, defend and hold harmless
the other and the other's constituent partners and their respective officers,
directors, agents and employees from and against all claims for any such
commissions or fees made by anyone claiming by or through the indemnifying
party, except for the broker named above in this Section 30.12.

               30.13 No Merger. The voluntary or other surrender or termination
of this Lease by Tenant, or a mutual cancellation thereof shall not work a
merger, but, at Landlord' sole option, shall either terminate all existing
subleases or subtenancies or shall operate as an assignment to Landlord or all
such subleases or subtenancies. Tenant agrees that in the event Tenant becomes
the owner of the Building Real Property, Tenant's leasehold hereunder shall not
then or thereafter merge with the fee estate and Tenant hereby irrevocably
surrenders any right to effect such merger and this Lease shall continue in full
force and effect.

               30.14 Consents. Unless otherwise expressly provided in this
Lease, all consents and approvals to be given by Landlord or Tenant shall not be
unreasonably withheld.

               30.15 Survival. All of Tenant's and Landlord's covenants and
obligations contained in this Lease which by their nature might not be fully
performed or capable of performance before the expiration or earlier termination
of this Lease shall survive such expiration or earlier termination. No provision
of this Lease providing for termination in certain events shall be construed as
a limitation or restriction of Landlord's or Tenant's rights and remedies at law
or in equity available upon a breach by the other party of this Lease.

               30.16 Amendments. No amendments or modifications of this Lease or
any agreements in connection therewith shall be valid unless in writing duly
executed by both Landlord and Tenant. No amendment to this Lease shall be
binding on any mortgagee of Landlord (or purchaser at any foreclosure sale)
unless such mortgagee shall have consented thereto in writing.

               30.17 Attorneys' Fees. If Landlord becomes a party to any
litigation not initiated by Tenant concerning this Lease, the Premises or the
Building Real Property by reason of any act or omission of Tenant or its
authorized representatives, and not by reason of Landlord's own act or omission
or any act or omission of Landlord's authorized representatives, Tenant shall be
liable to Landlord for reasonable attorneys' fees and court costs incurred by
Landlord in the litigation.

               If either party commences an action against the other party
arising out of or in connection with this Lease, or institutes any proceeding in
a bankruptcy or similar court which has jurisdiction over the other party or any
or all of its property or assets, the prevailing party shall be entitled to have
and recover from the losing party reasonable attorneys' fees and court costs.

               30.18  Arbitration of Disputes.

                      (a) If arbitration is expressly provided for in this Lease
as a dispute resolution procedure, the arbitration shall be conducted as
provided in this Article, except as otherwise provided in this Lease. All
proceedings shall be conducted according to the Commercial Arbitration Rules of
the American Arbitration Association (the "AAA"), or its successor organization,
except as hereinafter provided. No action at law or in equity in connection with
any such dispute shall be brought until arbitration hereunder shall have been
waived, either expressly or pursuant to this Article. The judgment upon the
award rendered in any arbitration hereunder shall be final and binding on both
parties hereto and may be entered in any court having jurisdiction thereof.

                      (b) During an arbitration proceeding pursuant to this
Article, the parties shall continue to perform and discharge all of their
respective obligations under this Lease, except as otherwise provided in this
Lease.

                                      -24-

<PAGE>   26
                      (c) Unless arbitration is specified as a dispute
resolution procedure as to a particular dispute hereunder, disputes under this
Lease shall not be resolved by arbitration unless both parties agree in writing
to do so, and disputes shall be resolved as otherwise provided by law.

                      (d) All disputes that may be arbitrated in accordance with
this Article shall be raised by notice to the other party, which notice shall
state with particularity the nature of the dispute and the demand for relief,
making specific reference by article number and title of the provisions of this
Lease alleged to have given rise to the dispute. The notice shall also refer to
this Article and shall state whether or not the party giving the notice demands
arbitration under this Article. If no such demand is contained in the notice,
the other party against whom relief is sought shall have the right to demand
arbitration under this Article within ten (10) business days after such notice
is received. Unless one of the parties demands arbitration, the provisions of
this Article shall be deemed to have been waived with respect to the dispute in
question.

                      (e) The notice specified in Paragraph (d) above shall
identify the arbitrator to act on the notifying party's behalf. The arbitrator
shall be a person who has demonstrated at least ten (10) years of experience in
commercial real estate matters and, in particular, the subject matter of the
dispute in question. Within ten (10) business days after receipt of the notice
of arbitration, the other party shall notify the first party of the identity of
the arbitrator to act on such other party's behalf, which arbitrator shall be
similarly qualified. If such party fails to identify its arbitrator within ten
(10) business day period, the arbitrator named by the notifying party shall be
the only arbitrator to resolve the dispute. If two (2) arbitrators are chosen
pursuant to the foregoing, they shall meet within ten (10) business days after
the second arbitrator is appointed and, if within ten (10) business days after
such first meeting the two arbitrators shall be unable to agree promptly upon a
resolution of the dispute, they shall appoint a third arbitrator, who shall be
similarly qualified. In the event they are unable to agree upon such appointment
within five (5) business days after expiration of such ten (10) day period, the
third arbitrator shall be selected by the parties themselves, if they can agree
thereon, within a further period of ten (10) business days. If the parties do
not so agree, either party, on behalf of both, may request appointment of such a
qualified person by the AAA. If the AAA shall refuse or be unable to provide
such selection, the arbitrator shall be appointed by any successor organization
providing substantially the same services, and in the absence of such an
organization, by the Presiding Judge of the California Superior Court for the
City and County of San Diego. The arbitrator(s) so selected shall resolve the
dispute. The arbitration proceedings shall take place at a mutually acceptable
location in the City and County of San Diego.

                      (f) When resolving any dispute, the arbitrators shall
apply the pertinent provisions of this Lease without departure therefrom in any
respect. The arbitrators shall not have the power to change any of the
provisions of this Lease, but this Article shall not prevent in any appropriate
case the interpretation, construction and determination by the arbitrators of
the applicable provisions of this Lease to the extent necessary in applying the
same to the matters to be determined by arbitration.

                      (g) Except as otherwise expressly provided in this Lease,
the cost of the arbitration, including reasonable attorneys' and expert witness
fees, shall be borne by the unsuccessful party (as determined by the
arbitrators).

               30.19 Relocation of Tenant. Landlord shall have the right at any
time, upon not less than 90 days' advance written notice to Tenant (the
"Relocation Notice"), to relocate Tenant to different premises in the Project
(the "Substitute Premises"), provided (a) that the Substitute Premises are of
approximately the same size as the Premises, (b) that Landlord rebuilds Tenant's
existing improvements and fixtures to the same general specifications, quality
and style, to Tenant's reasonable satisfaction, and (c) that Landlord reimburses
Tenant for all out-of-pocket expenses reasonably incurred by Tenant as a result
of the relocation (including replacement of existing supplies of stationery and
business cards to reflect Tenant's new address). Tenant shall relocate to the
Substitute Premises at the time set out in the Relocation Notice, or the
earliest date thereafter on which the Substitute Premises are substantially
ready for Tenant's occupancy. Upon the date Tenant takes possession of the
Substitute Premises, this Lease shall be deemed amended to provide for the
Substitute Premises and all other terms and conditions of this Lease shall
remain in full force and effect.

        31. Design and Construction Process.

               31.1 Tenant's Design Development Documents. Landlord will provide
Tenant with base building plans and drawings for the Building and any other
plans in Landlord's possession. Tenant will prepare for review by Landlord two
complete sets of Tenant's Design Development Documents consisting of drawings,
details, outlines, specifications and other documents to fix and describe the
size and character of the Premises with respect to architectural, structural,
mechanical, electrical and fire safety systems, materials and such other
components as may be appropriate; such documents shall indicate material
finishes, heat load requirements of Tenant-supplied equipment and such other
specialty systems and components as Landlord reasonably will request.

               31.2 Tenant's Construction Documents. Within five (5) business
days of Landlord's receipt of Tenant's Design Development Documents, Landlord
will review those documents. Based upon such review Landlord may order
reasonable modifications to any of Tenant's Design Development Documents, which
modifications will be made by Tenant in accordance with Landlord's direction and
will be incorporated in Tenant's Construction Documents to be prepared by
Tenant. Tenant will prepare for

                                      -25-
<PAGE>   27

review by Landlord two complete sets of Tenant's Construction Documents
consisting of drawings and specifications setting forth in complete detail the
final requirements for the construction of the Premises. Landlord will complete
its review of Tenant's Construction Documents within five (5) business days of
receipt of those documents. Based upon such review Landlord may order reasonable
modifications to any of Tenant's Construction Documents and the modifications
will be made by Tenant in accordance with Landlord's direction within fifteen
(15) business days of request by Landlord.

               31.3 Applicable Law; Budgetary Constraints. Tenant's Design
Development Documents and Tenant's Construction Documents are herein
occasionally collectively called "Tenant's Documents." All Tenant's Documents
will conform with applicable federal, state and local law (including without
limitation The Americans With Disabilities Act of 1990 and its implementing
regulations, as amended or supplemented from time to time) and with Building and
Project plans and specifications. It will be the responsibility of Tenant to
prepare and submit Tenant's Documents that fall within Tenant's budgetary
constraints (if any). Any redesign made necessary by the failure of Tenant's
documentation to fall within Tenant's budgetary constraints, and any resulting
delay therefrom, will be the sole responsibility of Tenant. Landlord will not be
responsible for any failure of bidder's estimates to fall within Tenant's
budgetary constraints.

               31.4 Requirements of Tenant's Documents. Tenant's Documents will
be completed and fully coordinated. Tenant's Documents will also illustrate all
existing site conditions and will include all work necessary to achieve a
Certificate or Statement of Occupancy for the Premises. Tenant's Documents will
be signed and sealed by an architect or professional engineer (where
applicable), licensed and registered in the State of California. All costs and
expenses incurred by Tenant in connection with Tenant's Documents may be paid
from the T.I. Allowance.

               31.5 Contractors/Bidding Procedures. Landlord and Tenant will
agree on a list of mutually acceptable contractors who will be asked to submit
bids for the demolition of the existing tenant improvements (as may be
necessary) and construction of the Tenant Improvements. This list shall include
David Begent & Company. Upon receipt of the bids, Tenant will select the
contractor from the agreed upon list. The selected bid need not be the low bid.

               31.6 Construction. Tenant's contractor will comply with
reasonable construction rules made by Landlord and will coordinate its work with
any other work being undertaken at the Project. The Tenant Improvements will be
constructed in accordance with Tenant's Documents. Tenant diligently will pursue
the demolition of the existing tenant improvements (as may be necessary) and the
construction of the Tenant Improvements in a lien free, good and workmanlike
manner in accordance with generally accepted construction practices until all of
the work has been completed, subject to Section 31.9.

               31.7 Disbursement of T.I. Allowance. Landlord will disburse the
T.I. Allowance within thirty (30) days after receipt of invoices that have been
approved by Tenant for work that has been completed, less a ten percent (10%)
retention (the aggregate amount of such retentions referred to herein as the
"Final Retention"). Subject to the terms of this Lease, Landlord shall deliver
to Tenant the Final Retention following the substantial completion of
construction of the Tenant Improvements in the Premises, provided that (i)
Landlord determines that the Tenant Improvements have been constructed in
accordance with the terms of this Lease, and (ii) Tenant's architect delivers to
Landlord a certificate, in a form acceptable to Landlord, certifying that the
construction of the Tenant Improvements in the Premises has been substantially
completed and the Premises are ready for occupancy in accordance with Tenant's
Documents. If the cost of the Tenant Improvements is less than the T.I.
Allowance, the difference shall be retained by Landlord.

               31.8 Access. Landlord will be entitled (but will not be
obligated) to inspect the Tenant Improvements for the Premises under
construction and upon completion, at reasonable times and intervals, for the
purpose of determining that the work is being constructed in accordance with
Tenant's Documents and the provisions of this Lease.

               31.9 Construction. Tenant may commence construction of the Tenant
Improvements for the Premises at any time on or after Landlord allows Tenant
access to the Premises in accordance with Section 3.1 above.

        32. Extension Option.

               32.1 Tenant Option. Tenant shall have one (1) option to extend
the Term of this Lease for an additional period of three (3) years which will
commence on the day following the last day of the Term (the "Extension Term").
The option for the additional period may be exercised by Tenant only by written
notice (the "Extension Exercise Notice") given to Landlord not earlier than the
date which is twelve (12) months prior and not later than the date which is at
least nine (9) months prior to the expiration of the period of the Term (the
"Extension Exercise Date"). Except as stated below in this Section 32, all of
the terms and conditions of this Lease in effect immediately prior to the
commencement of an extension period shall equally pertain in all respects to
that extension period.

               32.2 Extension Rent. The Rent and Additional Charges during the
first extension period will be the Market Rental Value of the Premises (as
defined and determined pursuant to Section 32.3) for that period.

                                      -26-

<PAGE>   28
               32.3 Rent Notice by Landlord. The Market Rental Value as
determined by Landlord will be designated by notice to Tenant pursuant and
subject to Section 32.4 no later than eight (8) months prior to expiration of
the period of the Term.

               32.4 Fair Market Value Rent. The Market Rental Value of the
Premises will be the fair market rent and all additional charges and additional
rent for the Premises determined as of the date that the extension of the Term
is to commence, taking into consideration the rental rates then being obtained
by Landlord for comparable space in the Project and the rates being obtained by
other landlords in other projects in San Diego, California of the same
approximate vicinity, age, quality, condition and level of amenities, as
adjusted on account of pertinent differences such as the heights of the floors
in question, incentives for initial occupancy such as free rent, existing lease
takeover and assumption costs, brokerage commissions and demolition and
improvement costs (or the inapplicability of such incentives in the case of
renewals or extensions), size of space, length of term and anticipated
commencement date with respect to such renewal and any other economic
concessions; provided, however, that in no event shall the Market Rental Value
be less than the Rent in effect under this Lease immediately prior to the
commencement of the Extension Term. Landlord's determination of Market Rental
Value shall be final and binding unless Tenant, within thirty (30) calendar days
and by notice to Landlord, withdraws its exercise of the extension option or
gives notice to Landlord that it will, and promptly thereafter does submit such
determination of Market Rental Value to arbitration pursuant to Section 30.18 of
this Lease. In the event of such submission, the Market Rental Value shall be
determined by the arbitrators, whose determination shall be based upon the same
factors set forth in this Section 32.4.

        32.5 Effect of Default. If Tenant is in default or any event or
condition has occurred which after notice or passage of time or both shall
constitute a default during the time period when it may otherwise exercise the
option, then any attempt to exercise the option shall be null, void, and of no
force or effect. If Tenant exercises the option and if Tenant is in default or
any event or condition has occurred which after notice or passage of time or
both shall constitute a default at any time after exercise of the option or on
the first day for commencement of the Extension Term, then the exercise of the
option by Tenant shall be null, void, and of no force or effect. If Tenant has
been in default in payment of any sum required by this Lease where a late charge
has become due under this Lease for more than three times during any
twelve-month period, then the provisions of this option to extend the Term shall
be canceled and shall be of no force or effect. No condition of the Premises,
including, without limitation, any alteration or improvement made by Tenant,
oral intention expressed by Tenant or detrimental reliance by Tenant on any
statement, act, or omission by Landlord shall vest any rights in Tenant for
exercise of this option or to possess the Premises during any period set for
extension of the Term in this option, or estop Landlord from eviction of Tenant
after the end of the Term of this Lease then in effect, or give rise to any
equitable defense to such eviction. Tenant hereby waives any and all equitable
remedies with respect to this option unless Tenant has complied in all respect
with the written notice requirements set forth herein. The sole and exclusive
method for exercise of the option contained herein shall be delivery of the
written notice called for herein by Tenant to Landlord on a timely basis.
Landlord and Tenant hereby agree that time is of the essence with respect to
delivery of any notice of exercise by Tenant to Landlord. The date for delivery
of any notice required or permitted in this option shall be determined by the
provisions for delivery of notice contained in this Lease.

        33. Building Common Area Restrooms. The Building Common Area restrooms
located on the ground floor of the Building are shown on Exhibit "E" attached
hereto.

        34. Signage. Tenant shall not erect or maintain any temporary or
permanent sign on or about the Premises, the Building, or the Project, or
visible from the Common Areas or exterior, without obtaining prior written
approval from Landlord, which may be granted or withheld in Landlord's sole and
absolute discretion. Any request for approval of a sign shall be made in such
detail as Landlord shall reasonably request. Landlord shall, at Tenant's
expense, identify Tenant's business name on the monument sign located outside
the Building, and Landlord shall, at Landlord expense, identify Tenant's
business name at the interior suite entrance to the Premises and on the
directory board for the Building. All signs, whether erected by Landlord or
Tenant, shall conform to Landlord's building standard signage and to all laws,
ordinances, rules, regulations, permits, covenants, conditions, restrictions,
and easements pertaining to signs. In the event of a violation of the foregoing
by Tenant, Landlord may remove same without any liability, and may charge the
expense incurred in such removal to Tenant. Tenant shall remove all approved
signs which it has erected upon the termination of the Lease and repair all
damage caused by such removal.

        35. Nitrogen Tank. Tenant, at Tenant's sole cost and expense, shall
install and maintain in an enclosed area in either the parking area or hillside
area near the Building as reasonably determined by Landlord and Tenant, a
nitrogen tank approximately ten (10) feet tall and six (6) feet in diameter and
related equipment and piping ("Nitrogen Tank Equipment"). The location and
design of the Nitrogen Tank Equipment shall be approved by Landlord in writing
prior to installation. Prior to the installation of the Nitrogen Tank Equipment,
Tenant shall provide to Landlord a written description of the Nitrogen Tank
Equipment, which shall be in detail reasonably satisfactory to Landlord. Tenant,
at Tenant's sole cost and expense, shall screen all sides, including the top, of
the Nitrogen Tank Equipment and install any other improvements reasonably
required by Landlord in connection with installation of the Nitrogen Tank
Equipment, including without limitation, a retaining wall in the event the
Nitrogen Tank Equipment is located in the hillside area near the Building. If
required by Landlord, the Nitrogen Tank Equipment, at

                                      -27-
<PAGE>   29
Tenant's cost and expense, shall be screened with a material similar to the
exterior of the Building so as to cause the screening to appear to be part of
the Building. Tenant shall be solely responsible for any damage to or loss of
the Nitrogen Tank Equipment and shall carry loss and casualty insurance with
full replacement value coverage. Landlord, at its option, shall remove the
Nitrogen Tank Equipment upon the termination of this Lease, and Tenant shall
promptly reimburse Landlord the cost and expense to repair any and all damage
caused in connection with such removal. Tenant shall not be entitled to modify
or add to the Nitrogen Tank Equipment without Landlord's prior written consent.
The placement of the Nitrogen Tank Equipment shall not interfere with any
existing facilities located in the Building or the Project. Tenant shall be
responsible for obtaining any and all permits or licenses that may be required
by any governmental authorities in connection with the Nitrogen Tank Equipment.

               IN WITNESS WHEREOF, Landlord and Tenant have each caused their
duly authorized representative to execute this Lease on their behalf as of the
date first above written.

LANDLORD:                                           TENANT:
--------                                            ------
SAN DIEGO TECH CENTER, LLC,                         OPTICAL MICRO MACHINES,
a Delaware limited liability company                a California corporation

By       San Diego Realty Fund 5, LLC,              By /s/ Anis Husain
         ---------------------------------------       -------------------------
         a California limited liability company,       ANIS HUSAIN, PRESIDENT
         Its Administrative Member                     [Printed Name and Title]

         By: /s/ Signature Illegible                By: /s/ M. Hays
            ------------------------------------       -------------------------
         Its: Manager                                  MICHELLE HAYS, CFO
                                                       [Printed Name and Title]

                                      -28-

<PAGE>   30
                                   EXHIBIT A

                 [EXHIBIT DEPICTS A SITE MAP OF SAN DIEGO TECH
        CENTER WITH PREMISES TO BE RENTED MARKED BY CROSS-HATCHED LINES]

<PAGE>   31
                                   EXHIBIT B

                   [EXHIBIT DEPICTS A SITE MAP OF SURROUNDING
            BUILDINGS AND PARKING LOT OF THE SAN DIEGO TECH CENTER]

<PAGE>   32

                                    EXHIBIT C
                              RULES AND REGULATIONS
              ATTACHED TO AND MADE A PART OF OFFICE BUILDING LEASE
       (Capitalized terms shall have the meaning set forth in the Lease.)

        1. Parking-General. Subject to compliance with the rules and regulations
set forth below in paragraph 2, so long as the Lease to which this Exhibit C is
attached remains in effect, Tenant or persons designated by Tenant shall be
entitled to non-exclusive use of unreserved surface parking areas located at the
Project. All persons utilizing the Project parking facilities shall comply with
the rules and regulations set forth below. Landlord reserves the right to modify
and/or adopt such other reasonable and non-discriminatory rules and regulations
for the Project parking as it deems necessary. Landlord may refuse to permit any
person who violates the rules and regulations to park in the Project parking
facilities. Any violation of this Parking Agreement shall subject the violator's
car to removal from the Project parking facilities at the violator's expense.

        2. Parking-Rules and Regulations.

                      (a) Cars must be parked entirely within the stall lines
painted on the floor.

                      (b) All directional signs and arrows must be observed.

                      (c) The speed limit shall be 5 miles per hour.

                      (d) Parking is prohibited:

                          (1) In areas not striped for parking;

                          (2) In fire lanes;

                          (3) Where "no parking" signs are posted;

                          (4) In cross-hatched areas; and

                          (5) In such other areas as may be designated by
                              Landlord.

                      (e) Every parker is required to park and lock his or her
own car. All responsibility for theft and/or damage to cars, other personal
property or persons is assumed by the parker.

                      (f) No more than one vehicle may be parked in any one
parking space. Washing, waxing, cleaning or servicing of any vehicle by a parker
and/or his agents is prohibited.

                      (g) Tenant shall acquaint all its officers and employees
with these rules and regulations.

        3. Asbestos.

                      (a) Tenant has been provided with the Asbestos Reports
described in Section 30.1 of the Lease. The reports contain a management plan
and procedures.

                      (b) It is important to the health and safety of everyone
in the Project that the procedures described in the management plan and in the
Asbestos Reports be strictly followed. If Tenant has reason to believe that
anyone is not following these procedures, that there is asbestos in any area of
the Building or Project not indicated in the Asbestos Reports, or that any
asbestos containing materials have been damaged, Tenant shall immediately
contact Landlord or its property manager. Tenant shall not fail to follow the
attached procedures in any way and must obtain the property manager's approval
as to any work to be done by Tenant or any of Tenant's Agents if the work
involves any procedures to be done in any area containing asbestos. The property
manager may withhold consent to any such work if the property manager is of the
opinion that the work may create a danger to the employee, or others in the
Building or Project.

        4. Miscellaneous.

                      (a) No sign, placard, picture, advertisement, name or
notice shall be inscribed, displayed or printed or affixed on or to any part of
the Building without the written consent of Landlord, first had and obtained,
and Landlord shall have the right to remove any such sign, placard, picture,
advertisement, name or notice without notice to and at the expense of Tenant.
All signs or lettering on doors shall conform to Landlord's sign criteria for
the Building. Tenant shall not place anything or allow anything to be placed
near the glass of any window, door, partition or wall which may appear unsightly
from outside the Premises.

                                      -31-

<PAGE>   33

                      (b) Tenant shall not alter any lock or install any new or
additional locks or any bolts on any door of the Premises without obtaining the
prior express written consent of Landlord which consent shall not be
unreasonably withheld.

                      (c) Toilet rooms, urinals, wash bowls and other apparatus
shall not be used for any purpose other than that for which they were
constructed and no foreign substance of any kind whatsoever shall be thrown
therein, and the expense of any breakage, stoppage or damage resulting from the
violation of this rule shall be borne by Tenant or those employees or invitees
of Tenant who shall have caused it.

                      (d) Tenant shall not use, keep or permit to be used or
kept, any foul or noxious gas or substance in the Premises (except as set forth
in the Lease), or permit or suffer the Premises to be occupied or used in a
manner offensive or objectionable to Landlord or other occupants of the Building
by reason of noise, odors and/or vibrations, or interfere in any way with other
tenants or those having business therein, nor shall any animals or birds be
brought in or kept in or about the Premises or the Building.

                      (e) Tenant shall not use or keep in the Premises any
flammable or combustible fluid or material (except as set forth in the Lease),
including, but not limited to, kerosene or gasoline. Tenant shall not use any
method of heating or air conditioning other than that supplied or installed by
Landlord.

                      (f) Upon the termination of its tenancy, Tenant shall
deliver to Landlord the keys for all offices, rooms and toilet rooms which shall
have been furnished to Tenant or which Tenant shall have had made, and in the
event of loss of any keys so furnished, shall pay Landlord therefor.

                      (g) Tenant shall not lay linoleum, tile, carpet or any
other similar floor covering so that the same shall be affixed to the floor of
the Premises in any manner, without obtaining the prior express written consent
of Landlord which consent shall not be unreasonably withheld. The expense of
repairing any damage resulting from a violation of this rule or removal of any
floor covering shall be borne by Tenant, or by the contractors, employees or
invitees of Tenant who caused the damage.

                      (h) Landlord reserves the right to exclude or expel from
the Buildings any person who, in the judgment of Landlord, is intoxicated or
under the influence of liquor or drugs, or who shall in any manner do any act in
violation of any of the rules and regulations of the Project.

                      (i) Landlord shall have the right, exercisable with
notice, to change the name and the street address of the Building of which the
Premises are a part.

                      (j) Tenant shall not disturb, solicit, or canvas any
occupant of the Building or Project and shall cooperate to prevent same.

                      (k) Without the written consent of Landlord, Tenant shall
not use the name of the Building or the Project in connection with or in
promotion or advertising of the business of Tenant except as Tenant's address.

                      (l) All exterior window coverings, whether curtains,
blinds or otherwise, used by Tenant shall be approved in writing by Landlord.
Landlord intends that all window coverings in the Project be uniform and
standard in color, texture and appearance and Tenant shall have no right to
deviate from or change the exterior window coverings approved by Landlord.

                      (m) Tenant shall comply with all documents, instruments
and covenants recording against the Project, including, without limitation, the
covenants, conditions and restrictions of the Lusk/Mira Mesa Industrial Park, a
copy of which has been received and reviewed by Tenant.

                      (n) Subject to reimbursement pursuant to Article 5 of the
Lease, Tenant shall have the right to use, in common with other tenants of the
Project and subject to Landlord's reasonable rules and regulations, the Project
amenities which include the athletic club, aerobic center, racquetball court,
tennis courts, volleyball courts and swimming pool at no additional charge.

                                      -32-

<PAGE>   34

                                    EXHIBIT D

                               HAZARDOUS MATERIALS

From:            Charles King [cking@omminc.com]
Sent:            Wednesday, February 10, 1999 1.30 PM
To:              michelle Hays
Subject:         Chemicals

Hi Michelle,

The primary chemicals we will be using in the process are:

1)      Hydrofluoric acid (HF), 49% concentration
2)      Isopropyl alcohol (IPA)
3)      Acetone

We will be working with these chemicals in small volumes (about 200 milliliters
each), and they will be used under a laminar flow hood with exhaust cutting to
the outside atmosphere. Chemical waste will be stored and removed by a chemical
waste disposal service.

Additionally, we will be using nitrogen gas in medium quantities and small
quantities of helium gas. All of the gases are inert and non-flammable.

We will have an installed Deionized (DI) water source, and will also be using
vacuum and compressed air.

-Charles.

                                      -32-

<PAGE>   35

                                   EXHIBIT E

                [EXHIBIT DEPICTS COMMON AREAS ACCESSIBLE TO ALL
                       TENANTS AT SAN DIEGO TECH CENTER]

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