STOCK PURCHASE AGREEMENT








                                           STOCK PURCHASE RIGHT ISSUED (#) ____


                           STOCK PURCHASE CERTIFICATE

THIS IS TO CERTIFY that The Keith Companies, Inc., a California corporation (the
"COMPANY"), has offered you (the "PURCHASER") the right to purchase Common Stock
(the "Stock" or "Shares") of the Company under its Amended and Restated 1994
Stock Incentive Plan (the "Plan"), as follows:

Name of Purchaser:           _____________________________

Address of Purchaser:        c/o The Keith Companies
                             19 Technology Drive
                             Irvine, CA 92618

Number of Shares:            ______________________

Purchase Price:              Prior services rendered with a value equal to
                             $____($_____per share)

Offer Grant Date:            ______________________

Offer Expiration Date:       15 Days after the Offer Grant Date

Vesting
Commencement Date:           ______________________

Vesting Schedule:               ANNIVERSARY                 NUMBER OF
                               OF THE VESTING                 VESTED
                             COMMENCEMENT DATE                SHARES
                             -----------------                ------
                                   First                  ____________
                                   Second                 ____________
                                   Third                  ____________

By your signature and the signature of the Company's representative below, you
and the Company agree to be bound by all of the terms and conditions of the
Stock Purchase Agreement, which is attached hereto as Annex I and the Plan (both
incorporated herein by this reference as if set forth in full in this document).
By executing this Agreement, you hereby irrevocably elect to exercise the
purchase rights granted pursuant to the Stock Purchase Agreement, to receive the
shares of Restricted Stock of The Keith Companies, Inc., designated above and to
waive any claim to compensation for prior services to the Company as payment of
the purchase price of the shares being purchased.

PURCHASER:                                        THE KEITH COMPANIES, INC.


                                                  By:
- --------------------------------------------         ---------------------------
                                                      Aram H. Keith,
                                                      Chief Executive Officer

Dated:______________________________________      Dated: ______________________







                                     ANNEX I

         THE SHARES OF STOCK GRANTED PURSUANT TO THIS AGREEMENT ARE NOT
            TRANSFERABLE OTHER THAN AS SET FORTH IN THIS AGREEMENT.

            THE KEITH COMPANIES, INC. AMENDED AND RESTATED 1994 STOCK
                                 INCENTIVE PLAN

                            STOCK PURCHASE AGREEMENT

This Stock Purchase Agreement (this "AGREEMENT") is made and entered into on the
execution date of the Stock Purchase Certificate to which it is attached (the
"CERTIFICATE"), by and between The Keith Companies, Inc., a California
corporation (the "COMPANY"), and the Director, Employee or Consultant
("PURCHASER") named in the Certificate.

Pursuant to the The Keith Companies, Inc. Amended and Restated 1994 Stock
Incentive Plan (the "PLAN"), the Administrator of the Plan has authorized the
grant to Purchaser of the right to purchase shares of the Company's Common
Stock, upon the terms and subject to the conditions set forth in this Agreement
and in the Plan. Capitalized terms not otherwise defined herein shall have the
meanings ascribed to them in the Plan.

SECTION 1. THE OFFER

     1.1  OFFER OF THE STOCK. The Company hereby offers to sell to Purchaser the
          number of shares of stock set forth in the certificate at the price
          and subject to the restrictions set forth in this Agreement (the
          shares of stock which you purchase under this agreement are referred
          to as the "Stock" or "Shares").

     1.2  PURCHASE PRICE. The Purchase Price for the Stock is set forth in the
          Certificate.

     1.3  PAYMENT FOR THE STOCK. Shares have been awarded under the Plan in
          consideration of services rendered to the Company, a Parent or a
          Subsidiary prior to the award. By your execution of the Certificate,
          you agree to purchase the Shares in lieu of receiving unpaid
          compensation for such prior services in the amount set forth in the
          Certificate and to waive any claim for such compensation. Purchase of
          the Shares constitutes payment in full of the Company's obligation to
          pay you such compensation, regardless of whether or not you actually
          vest in some or all of the Shares.

     1.4  EXPIRATION OF OFFER. This offer expires at 5:00 o'clock p.m. on the
          date set forth in the certificate.

SECTION 2. ACCEPTANCE OF THE OFFER

There is no obligation to exercise the rights granted to you under this
Agreement, in whole or in part. Purchaser may purchase fewer shares than the
number offered to Purchaser in this Agreement. However, you will not be entitled
to a cash or other form of payment attributable to compensation for prior
services if you do not accept the offer or any portion thereof. If






Purchaser decides to accept the offer and purchase any shares offered, Purchaser
must do the following:

     2.1  COMPLETE DOCUMENTS. Complete, sign and date one copy of the
          Certificate;

     2.2  SPOUSAL CONSENT. If Purchaser is married, Purchaser must have his or
          her spouse sign and date one copy of the attached Spousal Consent; and

     2.3  DELIVER TO COMPANY. Deliver to the Company on or before the time the
          offer expires, the signed copy of the Certificate attached to and
          forming part of this Agreement and the Spousal Consent as payment for
          the Stock.

Purchaser should retain a copy of all of the signed documents for his or her
files.

SECTION 3. RESTRICTIONS ON THE STOCK

     3.1  RESTRICTIONS ON TRANSFER OF SHARES. Purchaser shall not sell, make any
          short sale of, loan, hypothecate, pledge, grant any option for the
          repurchase of, transfer the economic consequences of ownership or
          otherwise dispose or transfer for value (each a "TRANSFER") or
          otherwise agree to engage in any of the foregoing transactions with
          respect to any shares of Stock unless and until such shares become
          Vested Shares (as defined in Section 3.2) and satisfy the additional
          conditions of this Section. The Company shall not be required to
          register any such Transfer and the Company may instruct its transfer
          agent not to register any such Transfer, unless and until all of the
          following events shall have occurred:

          3.1.1 The Shares are Transferred pursuant to and in conformity with:
               (i) (x) an effective registration statement filed with the
               Securities and Exchange Commission (the "COMMISSION") pursuant to
               the Securities Act of 1933, as amended (the "ACT") or (y) an
               exemption from registration under the Act; and (ii) the
               securities laws of any state of the United States; and

          3.1.2 Purchaser has, prior to the Transfer of such Shares, and if
               requested by the Company, provided all relevant information to
               the Company's counsel so that upon the Company's request, the
               Company's counsel is able to deliver, and actually prepares and
               delivers to the Company a written opinion that the proposed
               Transfer is: (i) (x) pursuant to a registration statement which
               has been filed with the Commission and is then effective or (y)
               exempt from registration under the Act as then in effect, and the
               Rules and Regulations of the Commission thereunder; and (ii) is
               either qualified or registered under any applicable state
               securities laws, or exempt from such qualification or
               registration. The Company shall bear all reasonable costs of
               preparing such opinion.

     3.2  ADDITIONAL RESTRICTIONS ON TRANSFER OF NON-VESTED SHARES. Purchaser
          agrees, for himself or herself and for his or her heirs, successors
          and assigns, that Purchaser shall have no right or power under any
          circumstance to Transfer any interest in shares of the Stock which are
          "NON-VESTED SHARES," as determined by the schedule set forth in the
          Certificate, except to the Company. As used in this Agreement, "VESTED
          SHARES" means all shares of the Stock which Purchaser has the right to
          Transfer at a specified point in time and "NON-VESTED SHARES" means


                                       2



          all shares of the Stock which Purchaser does not have the right to
          Transfer at a specified point in time. The Certificate sets forth the
          vesting schedule.

     3.3  COMPANY'S REPURCHASE RIGHT.

          3.3.1 SCOPE OF REPURCHASE RIGHT. Unless they have become vested, the
               Shares acquired under this Agreement initially shall be
               "RESTRICTED STOCK" and shall be subject to a risk of forfeiture
               including the right (but not an obligation) of repurchase by the
               Company (the "REPURCHASE RIGHT"). The Purchaser shall not
               transfer, assign, encumber or otherwise dispose of any Restricted
               Stock, except as provided in the following sentence. The
               Purchaser may transfer Restricted Stock by will or intestate
               succession or by transfer by instrument to a trust providing that
               the Restricted Stock is to be passed to one or more beneficiaries
               upon death of the trustor. PROVIDED, HOWEVER, the transferee must
               agree in writing on a form prescribed by the Company to be bound
               by all provisions of this Agreement. If the Purchaser transfers
               any Restricted Stock, then this Section 3 will apply to the
               transferee to the same extent as to the Purchaser.

          3.3.2 FORFEITURE OF UNVESTED STOCK. In the event that the Restricted
               Stock was issued to Purchaser solely in consideration for
               services rendered, without payment of any cash or similar
               consideration, and shares of Restricted Stock standing in the
               name of Purchaser on the books of the Company do not become
               Vested Shares on or before the time when the Purchaser's service
               as an Employee, Outside Director or Consultant ("SERVICE")
               terminates for any reason, with or without cause, including
               (without limitation) death or disability, such Restricted Stock
               shall be automatically forfeited and cancelled as outstanding
               shares of Common Stock immediately upon the occurrence of the
               event or time period after which such Non-Vested Shares of
               Restricted Stock may no longer become Vested Shares. In the event
               the Purchaser paid consideration other than services rendered,
               the Repurchase Right will be applicable to Non-Vested Shares of
               Restricted Stock following the Purchaser's termination of
               Service.

          3.3.3 EXERCISE PERIOD. The Repurchase Right shall be exercisable only
               during the 90-day period following the later of the date when the
               Purchaser's Service as an Employee, Outside Director or
               Consultant terminates for any reason, with or without cause,
               including (without limitation) death or disability.

          3.3.4 NON APPLICABILITY AND LAPSE OF REPURCHASE RIGHT. Except to the
               extent the Purchaser's Service is terminated for Cause, the
               Repurchase Right shall lapse with respect to the Shares in
               accordance with the vesting schedule set forth in the
               Certificate.

          3.3.5 REPURCHASE PRICE. Subject to the forfeiture provisions of
               Section 3.3.2, following a termination of the Participant's
               Service, which does not result from the Company's termination of
               Service for Cause, the Repurchase Right shall be exercisable at a
               price equal to the Purchase Price of Non-Vested Shares or Fair
               Market Value, if lower. Following the termination of the
               Participant's Service for Cause, the Repurchase Right shall be
               exercisable as to both Vested Shares and Non-Vested Shares at a
               price equal to the lower of the Purchase Price as set forth in
               the Certificate, or Fair Market Value.



                                       3



          3.3.6 RIGHTS OF REPURCHASE ADJUSTMENTS. If there is any change in the
               number of outstanding shares of Stock by reason of a stock split,
               reverse stock split, stock dividend, recapitalization,
               combination, reclassification, dissolution or liquidation of the
               Company, any corporate separation or division (including, but not
               limited to, a split-up, a split-off or a spin-off), a merger or
               consolidation; a reverse merger or similar transaction, then (i)
               any new, substituted or additional securities or other property
               (including money paid other than as an ordinary cash dividend)
               distributed with respect to any Restricted Stock (or into which
               such Restricted Stock thereby become convertible) shall
               immediately be subject to the Right of Repurchase; and (ii)
               appropriate adjustments to reflect the distribution of such
               securities or property shall be made to the number and/or class
               of the Restricted Stock and to the price per share to be paid
               upon the exercise of the Right of Repurchase; PROVIDED, HOWEVER,
               that the aggregate Purchase Price payable for the Restricted
               Stock shall remain the same.

     3.4  RETENTION OF RESTRICTED STOCK. Purchaser shall immediately deliver to
          the Company each certificate representing Restricted Stock issued to
          Purchaser hereunder, or deemed to be issued to Purchaser hereunder,
          together with the collateral instruments of transfer executed in
          blank, to be held by the Company until such time as all shares
          represented by that certificate become vested and any indebtedness
          with respect to those shares has been paid in full; provided, however,
          that if the Company holds a certificate representing Vested Shares and
          Restricted Stock, and any indebtedness with respect to the vested has
          been paid in full, upon Purchaser's request the Company will cause a
          certificate representing the Vested Shares to be delivered to
          Purchaser, but the Company will retain any certificate representing
          the Restricted Stock. Any new, substituted or additional securities or
          other property with respect to the Restricted Stock shall be held in
          the Company's custody, but only to the extent the shares are at the
          time Restricted Stock. All regular cash dividends on Restricted Stock
          (or other securities at the time held in custody) shall be paid
          directly to the Purchaser and shall not be held in custody. Restricted
          Stock, together with any other assets or securities held in custody
          hereunder, shall be (i) surrendered to the Company for repurchase and
          cancellation upon the Company's exercise of its Right of Repurchase
          (ii) released to the Purchaser upon the Purchaser's request to the
          extent the shares are no longer Restricted Stock (but not more
          frequently than once every six months). In any event, all shares which
          have vested (and any other vested assets and securities attributable
          thereto) shall be released within 60 days after the Purchaser's
          Termination of Service.

     3.5  NON-COMPLYING TRANSFERS. Every attempted Transfer of any shares of the
          Stock in violation of this Section 3 shall be null and void AB INITIO,
          and of no force or effect.

SECTION 4. LEGENDS ON STOCK CERTIFICATES

Purchaser agrees that the Company may place on each certificate representing
Shares the following legend:

               "THE SHARES OF STOCK EVIDENCED BY THIS CERTIFICATE ARE SUBJECT TO
               AND TRANSFERABLE ONLY IN ACCORDANCE WITH THAT CERTAIN The Keith
               Companies, Inc. Amended and Restated 1994 Stock Incentive Plan
               AND THE Stock Purchase AGREEMENT PURSUANT TO WHICH THE SHARES
               EVIDENCED BY THIS CERTIFICATE WERE ISSUED, COPIES OF WHICH ARE ON
               FILE AT



                                       4



               THE PRINCIPAL OFFICE OF THE COMPANY. NO TRANSFER OR PLEDGE OF THE
               SHARES EVIDENCED HEREBY MAY BE MADE EXCEPT IN ACCORDANCE WITH AND
               SUBJECT TO THE PROVISIONS OF SAID PLAN AND Stock Purchase
               AGREEMENT (INCLUDING THE COMPANY'S RIGHT OF REPURCHASE CONTAINED
               THEREIN)."

SECTION 5. WAIVER OF RIGHTS TO PURCHASE STOCK.

By signing the Certificate attached to and forming part of this Agreement,
Purchaser acknowledges and agrees that neither the Company nor any other person
or entity is under any obligation to sell or transfer to Purchaser any option or
equity security of the Company, other than the shares of Stock subject to this
Agreement and any other right or option to purchase Stock which was previously
granted in writing to Purchaser by the Board (or a committee thereof). By
signing the Certificate attached to and forming part of this Agreement, except
as provided in the immediately preceding sentence, Purchaser specifically waives
all rights he or she may have had prior to the date of this Agreement to receive
any option or equity security of the Company. By signing the Certificate
attached to and forming part of this Agreement, Purchaser also acknowledges and
agrees that neither the Company nor any other person or entity is under any
obligation to pay unpaid compensation to Purchaser for prior services to the
extent attributable to the Purchase Price under this Agreement, other than the
shares of Stock subject to this Agreement.

SECTION 6. TAX WITHHOLDING.

     6.1  PAYMENT OF TAXES. Purchaser agrees that, subject to SECTION 6.2 below,
          no later than the date as of which the restrictions on the Restricted
          Stock shall lapse with respect to all or any of the Restricted Stock
          covered by this Agreement (i.e., the date the Non-Vested Shares become
          Vested Shares), Purchaser shall pay to the Company any federal, state
          or local taxes of any kind, including payroll taxes, required by law
          to be withheld, if any, with respect to the Restricted Stock for which
          the restrictions shall lapse. The Purchaser's tax withholding payments
          may, to the extent permitted by the Administrator, be made (i) in
          cash, (ii) by withholding and applying shares of Common Stock to which
          the Participant is entitled as a result of the vesting and lapse of
          restrictions on Restricted Stock, or (iii) by payment in the form of
          Company Stock already held by the Purchaser. Withholding shares of
          Common Stock or tendering shares of Company Stock already held by the
          Purchaser, shall be limited to such number of shares, the Fair Market
          Value of which on the date the Restricted Stock vests or the already
          owned shares are tendered is equal to, but not in excess of, the
          amount of Purchaser's minimum statutory tax withholding liability. The
          Company shall, to the extent permitted by law, have the right to
          deduct from any payment of any kind otherwise due to Purchaser any
          federal, state or local taxes of any kind required by law to be
          withheld with respect to the shares of such Common Stock.

     6.2  83(B) ELECTION. If Purchaser properly elects, within thirty (30) days
          of the Grant Date (the date of the purchase), to include in gross
          income for federal income tax purposes an amount equal to the Fair
          Market Value of the Restricted Stock less the amount, if any, paid by
          the Purchaser for the Restricted Stock granted hereunder pursuant to
          Section 83(b) of the Internal Revenue Code of 1986, as amended,
          Purchaser shall pay to the Company, or make other arrangements
          satisfactory to the Administrator (including any alternative permitted
          under SECTION


                                       5



          6.1 above) to pay to the Company in the year of such grant, any
          federal, state or local taxes required to be withheld with respect to
          such Stock. If Purchaser fails to make such payments, the Company
          shall, to the extent permitted by law, have the right to deduct from
          any payment of any kind otherwise due to Purchaser any federal, state
          or local taxes of any kind required by law to be withheld with respect
          to such Stock.

SECTION 7. GENERAL PROVISIONS.

     7.1  FURTHER ASSURANCES. Purchaser shall promptly take all actions and
          execute all documents requested by the Company which the Company deems
          to be reasonably necessary to effectuate the terms and intent of this
          Agreement. Any sale or transfer of the Stock to Purchaser by the
          Company shall be made free of any and all claims, encumbrances, liens
          and restrictions of every kind, other than those imposed by this
          Agreement.

     7.2  NOTICES. All notices, requests, demands and other communications under
          this Agreement shall be in writing and shall be given to the parties
          hereto as follows:

If to the Company, to:

        Attn:  Chief Financial Officer
        The Keith Companies, Inc.
        19 Technology Drive
        Irvine, CA 92618

If to Purchaser, to the address set forth in the records of the Company.

Any such notice request, demand or other communication shall be effective (i) if
given by mail, 72 hours after such communication is deposited in the mail by
first-class certified mail, return receipt requested, postage pre-paid,
addressed as aforesaid, or (ii) if given by any other means, when delivered at
the address specified in this Section 7.2.

     7.3  TRANSFER OF RIGHTS UNDER THIS AGREEMENT. The Company may at any time
          transfer and assign its rights and delegate its obligations under this
          Agreement to any other person, Company, firm or entity, including its
          officers, Directors and shareholders, with or without consideration.

     7.4  PURCHASE RIGHTS NON TRANSFERABLE. Purchaser may not sell, transfer,
          assign or otherwise dispose of any rights hereunder except by will the
          laws of descent and distribution or to a Permitted Transferee and the
          rights hereunder may be exercised during the lifetime of Purchaser
          only by the Purchaser or by his or her guardian or legal
          representative.

     7.5  ADJUSTMENTS

          7.5.1 STOCK DIVIDENDS, SPLITS, ETC. If there is any change in the
               number of outstanding shares of Stock by reason of a stock split,
               reverse stock split, stock dividend, recapitalization,
               combination, reclassification, dissolution or liquidation of the
               Company, any corporate separation or division (including, but not
               limited to, a split-up, a split-off or a spin-off), a merger or
               consolidation; a reverse merger or similar transaction, then (i)
               any new, substituted



                                       6


               or additional securities or other property (including money paid
               other than as an ordinary cash dividend) distributed with respect
               to any Restricted Stock (or into which such Restricted Stock
               thereby become convertible) shall immediately be subject to the
               Repurchase Right; and (ii) appropriate adjustments to reflect the
               distribution of such securities or property shall be made to the
               number and/or class of the Restricted Stock and to the price per
               share to be paid upon the exercise of the Repurchase Right;
               PROVIDED, HOWEVER, that the aggregate purchase price payable for
               the Restricted Stock shall remain the same.

          7.5.2 LIQUIDATION, DISSOLUTION, MERGER OR CONSOLIDATION. If a
               dissolution or liquidation of the Company, or any corporate
               separation or division, including, but not limited to, a
               split-up, a split-off or a spin-off, or a sale of substantially
               all of the assets of the Company; a merger or consolidation in
               which the Company is not the Surviving Entity; or a reverse
               merger in which the Company is the Surviving Entity, but the
               shares of Company stock outstanding immediately preceding the
               merger are converted by virtue of the merger into other property,
               whether in the form of securities, cash or otherwise, then, the
               Company, to the extent permitted by applicable law, but otherwise
               in its sole discretion may provide for: (i) the continuation this
               Purchase Right (if outstanding but unexercised) or the Restricted
               Stock (if exercised) by the Company (if the Company is the
               Surviving Entity); (ii) the assumption of the Plan and this
               Purchase Right (if outstanding but unexercised) or the Restricted
               Stock (if exercised) by the Surviving Entity or its parent; (iii)
               the substitution by the Surviving Entity or its parent of a
               purchase right (if the Purchase Right is outstanding but
               unexercised) or restricted stock (if the Purchase Right is
               exercised) with substantially the same terms; or (iv) the
               cancellation of this Purchase Right (but not the Restricted Stock
               if exercised) without payment of any consideration.

     7.6  SUCCESSORS AND ASSIGNS. Except to the extent this Agreement is
          specifically limited by the terms and provisions of this Agreement,
          this Agreement shall be binding upon and inure to the benefit of the
          parties hereto and their respective successor, assigns, heirs and
          personal representatives.

     7.7  GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN
          ACCORDANCE WITH, THE LAWS OF THE STATE OF CALIFORNIA, WITHOUT REGARD
          TO ITS CHOICE OF LAW PROVISIONS, AS CALIFORNIA LAWS ARE APPLIED TO
          CONTRACTS ENTERED INTO AND PERFORMED IN SUCH STATE.

     7.8  SEVERABILITY. Should any paragraph or any part of a paragraph within
          this Stock Purchase Agreement be rendered void, invalid or
          unenforceable by any court of law for any reason, such invalidity or
          unenforceability shall not void or render invalid or unenforceable any
          other paragraph or part of a paragraph in this Stock Purchase
          Agreement.

     7.9  THE PLAN. This Agreement is made pursuant to the Plan, and it is
          intended, and shall be interpreted in a manner, to comply herewith.
          Any provision of this Agreement inconsistent with the Plan shall be
          superseded and governed by the Plan.

     7.10 MISCELLANEOUS. Titles and captions contained in this Agreement are
          inserted for convenience and reference only and do not constitute a
          part of this Agreement for any purpose.



                                       7



                                 SPOUSAL CONSENT



The undersigned spouse of Purchaser does hereby consent to the execution of the
foregoing Agreement by Purchaser, and the performance by him of his obligations
thereunder.



DATED:
      --------------------------------------      ------------------------------
                                                  Name:




                                       8



                                LETTER REGARDING
                     FEDERAL AND CALIFORNIA TAX CONSEQUENCES

                            The Keith Companies, Inc.
                               19 Technology Drive
                                Irvine, CA 92618


- ------------------------------
c/o The Keith Companies, Inc.
19 Technology Drive
Irvine, CA 92618

Dear __________:

This letter is to notify you of certain federal and California income tax
consequences to you as a result of your purchase of shares (the "SHARES") of
Common Stock of The Keith Companies, Inc. (the "COMPANY") pursuant to the Stock
Purchase Agreement dated __________, ____ between you and the Company.

The conclusion of this letter is that, if the purchase price for the Shares
equals their fair market value on the date you sign the Stock Purchase
Agreement, you should send copies of the attached form (the "SECTION 83(B)
ELECTION FORM") relating to Section 83 ("SECTION 83") of the Internal Revenue
Code of 1986 (the "INTERNAL REVENUE CODE"), to the Internal Revenue Service and
the Company, not later than 30 days after the date of the Stock Purchase
Agreement. If the purchase price for the Shares is prior services rendered or is
less than their fair market value on the date you sign the Stock Purchase
Agreement, you should consider carefully whether or not you should file the
Section 83(b) Election Form within 30 days after you sign the Stock Purchase
Agreement. Timely filing the Section 83(b) Election Form will require you to
recognize any taxable income attributable to the Shares based on their value at
the date of purchase. If you make the election, any subsequent increase in value
will be taxed as long-term or short-term capital gain (depending on your holding
period) when you sell or transfer the Shares.

FEDERAL INCOME TAX CONSEQUENCES

Certain federal income tax consequences to you in connection with your purchase
of the Shares are determined in accordance with Section 83.

SECTION 83(A). Under Section 83(a), a person to whom property is transferred in
connection with the performance of services ("SECTION 83 PROPERTY") must
recognize ordinary income in the year the property is transferred in an amount
equal to the fair market value of the Section 83 property at the time it is
transferred less the amount, if any, paid for the Section 83 property, unless
the Section 83 property is not transferable and is subject to a substantial risk
of forfeiture (collectively, a "RISK OF FORFEITURE"). If there is a Risk of
Forfeiture, then the person acquiring Section 83 property will not recognize
income until the Risk of Forfeiture lapses (unless a Section 83(b) election is
made - see below), at which time the person must recognize as ordinary income
the fair market value of the Section 83 property at that time less the amount,
if any, paid for the Section 83 property.





Your purchase of the Shares constitutes a transfer of Section 83 property.
Further, the Stock Purchase Agreement provides that, if you cease to be employed
by the Company for any reason, the Company must repurchase from you and you must
sell to the Company all Non-Vested Shares (as defined in the Stock Purchase
Agreement) for an amount which may be less than their fair market value. Under
Regulations promulgated under Section 83, these provisions constitute a Risk of
Forfeiture over your Non-Vested Shares. Thus, under Section 83(a), you would not
be required to recognize any income as a result of your purchase of the Shares
until they vest; when they vest, you would be required under Section 83(a) to
recognize as ordinary income the excess, if any, of the fair market value of the
Shares (as of the day they vest) over the price you paid for those Shares under
the Stock Purchase Agreement (for this purpose, the value of any prior services
that were consideration for the purchase of Shares will be valued at zero). If
the price of the Company's Common Stock is greater when the Shares vest than
when you purchased them, you could have a substantial tax liability in
connection with your purchase of the Shares when they vest.

SECTION 83(B) ELECTION. Section 83(b) provides an alternative method for taxing
Section 83 property. Under Section 83(b), a person may elect to recognize
ordinary income in the year Section 83 property is transferred to him or her,
rather then waiting until it vests. Thus, if you make a Section 83(b) election,
you will be required to recognize as ordinary income in the year you purchase
the Shares the difference, if any, between the fair market value of the Shares
on the date you sign the Stock Purchase Agreement and the purchase price you pay
for the Shares. For example, if you make the Section 83(b) election and you paid
a purchase price for the Shares equal to their fair market value, you will not
pay any taxes in the year of the purchase in connection with your purchase of
the Shares. On the other hand, if you make the Section 83(b) election and the
purchase price of the Shares is less than their fair market value on the date
you sign the Stock Purchase Agreement (for example, if Shares are granted in
lieu of unpaid compensation for prior services), you will be required to pay
taxes on the difference between those amounts in the year of the purchase. In
either case, however, if you make the Section 83(b) election, you will not be
required to recognize any income when the Shares vest.

To make the Section 83(b) election, you must file the Section 83(b) Election
Form with both the Company and the Internal Revenue Service office where you
file federal income tax returns. YOU MUST FILE THE SECTION 83(B) FORM WITHIN 30
DAYS AFTER YOU SIGN THE STOCK PURCHASE AGREEMENT. In addition, you must attach a
copy of the Section 83(b) Form to your income tax return that covers the year in
which you filed the Form.

SALE OF SECTION 83 PROPERTY. If a person sells Section 83 property after the
Risk of Forfeiture lapses (or after making a Section 83(b) election), he or she
will recognize taxable gain or loss equal to the difference between the amount
realized upon the sale of the Section 83 property and the person's "adjusted
basis" for the Section 83 property. The person's adjusted basis for the Section
83 property will be (i) the amount paid for the Section 83 property plus (ii)
any amount which the person has included in gross income pursuant to the Section
83(b) election. Thus, upon sale, you will recognize taxable gain or loss equal
to the difference between the sale price of the Shares and your adjusted basis
for the Shares.

In general, the gain or loss you recognize will be long-term capital gain or
loss if the following "Capital Gain Requirements" are met: (i) the Section 83
property is a capital asset and (ii) the



                                       2



Section 83 property is held for more than 12 months from either the date the
Restrictions on Transfer lapse or, if a Section 83(b) election is made, the date
the Section 83 property is acquired. Thus, as the Shares are probably a capital
asset in your hands, you will recognize long-term capital gain or loss upon
their sale if you hold them for more than 12 months from either the date they
vest or, if you make the Section 83(b) election, from the date you sign the
Stock Purchase Agreement. If you hold the Shares for less than 12 months from
either the date they vest or, if you make the Section 83(b) election, from the
date you sign the Stock Purchase Agreement, you will recognize short-term
capital gain or loss.

FORFEITURE OF SECTION 83 PROPERTY. If a person's interest in Section 83 property
is forfeited, the person will recognize gain or loss equal to the difference
between the amount realized upon forfeiture and the amount paid for the Section
83 property. In your case, if your employment with the Company is terminated
before all of the Shares have vested, the Company is obligated to repurchase
from you, and you are obligated to sell to the Company, any Non-Vested Shares at
the price you paid for them. As there would be no difference between the amount
realized upon forfeiture and the amount paid for the Shares, you would not be
required to recognize any gain or loss at that time. However, UPON FORFEITURE,
YOU WOULD NOT BE ABLE TO RECOUP ANY TAXES YOU PAY PURSUANT TO A SECTION 83(B)
ELECTION. The amount of taxes you pay in connection with Shares that are
forfeited will be considered a capital loss, but only to the extent of the
consideration you actually paid to purchase the shares (i.e., other than your
prior services)

CALIFORNIA INCOME TAX CONSEQUENCES.

The California income tax consequences to you in connection with your purchase
of the Shares are identical to the federal income tax consequences. To make the
Section 83(b) election in California, you must file the Section 83(b) Form with
the Internal Revenue Service, as described above; there are no extra filing
requirements for making the Section 83(b) election in California.

If you have any questions concerning the tax consequences described in this
letter, please feel free to call me.

                                    Sincerely,

                                    The Keith Companies, Inc.

                                    By:
                                        --------------------------------------
                                    Its:
                                        --------------------------------------



                                       3


                     ELECTION TO INCLUDE IN GROSS INCOME IN
                   YEAR OF TRANSFER PURSUANT TO SECTION 83(B)
                            THE INTERNAL REVENUE CODE

The undersigned hereby makes an election pursuant to the provisions of Section
83(b) of the Internal Revenue Code of 1986, as amended, and the regulations of
the Commissioner of Internal Revenue promulgated thereunder, with respect to the
Section 83 property described below, and supplies the following information in
connection with that election:

1.   The name, address, taxable year and taxpayer identification number of the
     undersigned are:

               Name
                   ---------------------------------------

               Address
                      ------------------------------------


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


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


        Taxable Year __________     Taxpayer I.D. No.______________

2.   The description of the Section 83 property with respect to which the
     undersigned is making the election is as follows:

_______________ (_____) shares (the "SUBJECT SHARES") of the Common Stock of The
Keith Companies, Inc., a California corporation (the "COMPANY").

3.   The date upon which the Subject Shares were transferred to, and acquired
     by, the undersigned was ____________, ________.

4.   The Subject Shares are subject to restrictions under a ___________ vesting
     period. If the undersigned's employment terminates, the Company is
     obligated to purchase and the undersigned is obligated to sell to the
     Company all Subject Shares that are not vested for a purchase price, which
     in certain circumstances may be less than the fair market value of the
     Subject Shares.

5.   The fair market value of the Subject Shares at the time of the transfer to,
     and acquisition by, the undersigned (determined without regard to any
     restrictions other than restrictions which by their terms will never lapse)
     was $_____ per share.

6.   The amount paid by the undersigned for the Subject Shares was $____ per
     share.







7.   The undersigned has furnished a copy of this election to the Company.


Dated:
      -----------------------                -----------------------------------
                                                         (Signature)


Make 4 copies

(1)  IRS (to be filed at the IRS where you ordinarily file your returns) within
     30 days after you sign the Stock Purchase Agreement

(2)  IRS (to be filed with your income tax return)

(3)  The Keith Companies, Inc.

(4)  Copy for purchaser