Document:

ESCROW AGREEMENT,  dated January 14, 2000 by and among Bruce R. Kalisch, an
individual  residing at 66 Church Lane,  Scarsdale,  New York 10583  ("Seller"),
Interboro  Holding,  Inc.,  a  Delaware  corporation  ("Buyer")  and  Fischbein
Badillo Wagner Harding,  having its principal office at 909 Third Avenue,  New
York,  New York 10022  ("Escrow  Agent").  Capitalized  terms not defined herein
shall have the same meaning as defined in the Agreement referred to below.

                               W I T N E S S E T H
                               - - - - - - - - - -

     WHEREAS,  Seller  and Buyer are  parties  to that  certain  Stock  Purchase
Agreement dated January 13, 2000 (the "Agreement");  and WHEREAS, Section 8.2(e)
of the  Agreement  provides that in the event the Company  receives  notice of a
proposed audit of the Company,  or such audit is commenced  without notice under
an SFA program,  any 50% EBITDA  Portion that remains unpaid to the Seller under
the  Agreement  (the "Unpaid  Purchase  Price") shall be deposited by Buyer into
escrow in lieu of paying such funds to Seller; and

     WHEREAS, Escrow Agent is willing to receive and retain such funds as escrow
agent upon the terms and conditions set forth herein.

     NOW,  THEREFORE,  in  consideration  of the premises and mutual  covenants,
agreements,  representations and warranties contained herein, the parties hereby
agree as follows:

     1.  Seller and Buyer  hereby  appoint  Escrow  Agent to serve as the escrow
agent under this Escrow  Agreement  and Escrow Agent  accepts such  appointment,
subject to the terms and conditions hereof.

<PAGE>

     2.  Escrow  Agent  agrees to hold all cash,  deposited  into  escrow,  plus
interest  accruing on such Unpaid  Purchase Price (the Unpaid Purchase Price and
interest accruing thereon collectively the "Escrowed  Property"),  in accordance
with the terms and conditions of this Escrow  Agreement.

     3. Pending the payment of any Escrowed  Property out of escrow, as provided
for herein,  Escrow Agent will hold all of the Escrowed  Property as  segregated
funds in its attorneys'  interest bearing trust account (the "Escrow  Account").

     4. The Escrow  Agent will  promptly  give  written  acknowledgement  of the
receipt of each  deposit  of Unpaid  Purchase  Price into the Escrow  Account to
Seller and Buyer.

     5. (a) To assert a right of offset against the Escrow Property  pursuant to
Article 8 of the Agreement,  Buyer shall  simultaneously  provide Seller and the
Escrow  Agent with  written  notice  (all  notices  required  under this  Escrow
Agreement being given  consistent  with the  requirements of Section 10.6 of the
Agreement)  setting  forth the basis and amount of the offset being claimed (the
"Notice of Offset").

          (b) Upon  receipt of a Notice of Offset,  Escrow  Agent  shall take no
action until it receives either:

               (i)  a letter signed by Seller and Buyer jointly  directing it to
                    deliver the Escrowed  Property in accordance  with the terms
                    set forth in such letter; or

               (ii) a final agency  determination  which  quantifies  the sum of
                    money to be  repaid  by the  school  in the  context  of the
                    subject audit; or

               (iii)a final  determination by a court of law,  arbitration panel
                    or similar  adjudicative body specifying the manner in which
                    the Escrowed Property is to be turned over by Escrow Agent

     6. If Seller does not give  written  notice of  objection to any portion of
Buyer's  Notice of Offset to Buyer and Escrow  Agent  within  fifteen  (15) days
after the Notice of Offset was given (in  accordance  with  Article  10.6 of the
Agreement),  Escrow  Agent shall  promptly  release to Buyer that portion of the
Escrowed  Property as equals the amount(s) not so objected to by Seller.  7. (a)
To demand payment of the Escrow  Property  consistent  with its rights under the
Agreement,  Seller shall simultaneously provide Buyer and  the Escrow Agent with
written  notice  setting  forth the basis of its  demand  and the  amount or the
period for which payment is being  claimed (the "Notice of  Payment").  (a) Upon
receipt of a Notice of  Payment,  Escrow  Agent  shall  take no action  until it
receives either: (b) a letter signed by Seller and Buyer jointly directing it to
deliver the Escrowed Property in accordance with the terms set forth in:

                                      2

<PAGE>

               (i)  a letter signed by Seller and Buyer jointly  directing it to
                    deliver the Escrowed  Property in accordance  with the terms
                    set forth in such letter; or

               (ii) a final agency  determination  which  quantifies  the sum of
                    money to be  repaid  by the  school  in the  context  of the
                    subject audit; or

               (iii)a final  determination by a court of law,  arbitration panel
                    or similar  adjudicative body specifying the manner in which
                    the Escrowed Property is to be turned over by Escrow Agent.

          (c) If Buyer does not give written  notice of objection to any portion
of Seller's  Notice of Payment to Seller and Escrow  Agent  within  fifteen (15)
days after the Notice of Payment was given (in  accordance  with Section 10.6 of
the  Agreement),  Escrow Agent shall promptly  release to Seller that portion of
the Escrowed  Property as equals the amount(s)  not so objected to by Buyer.  8.
Escrow  Agent  shall not be under  any duty to give the  Escrowed  Property  any
greater degree of care than it gives its own similar property, and it shall have
no liability  hereunder,  except for the willful breach of its duties hereunder.
9. Escrow Agent shall have no duties or responsibilities  except those expressly
set forth herein,  and no implied duties or obligations should be read into this
Escrow Agreement against Escrow Agent.  Escrow Agent need not refer to, and will
not be bound by,  the  provisions  of any  other  agreement  including,  but not
limited to, the  Agreement.  In no event,  shall Escrow Agent be  responsible to
Seller or Buyer for any claim  that  interest  earned on the  Escrowed  Property
while in escrow is inadequate.

     10. Escrow Agent may consult with counsel and shall be fully protected with
respect to any action taken or omitted by it in good faith on advice of counsel.

     11.  Escrow  Agent  makes  no  representation  as to the  validity,  value,
genuineness  or the  collectibility  of any  document or  instrument  held by or
delivered to it.

     12. Escrow Agent will receive no compensation  for its services  hereunder.

     13. In the event that Escrow  Agent shall be  uncertain as to its duties or
rights  hereunder,  or shall  receive  instructions  from  Seller or Buyer  with
respect to the Escrowed  Property,  which, in its opinion,  are in conflict with
any of the provisions hereof (i) it shall be entitled to refrain from taking any
action,  and in doing so shall not become liable in any way or to any person for
its failure or refusal to comply with such conflicting  demands, and it shall be
entitled  to  continue  so to refrain  from acting and so refuse to act until it
shall be directed otherwise, in writing, jointly by Seller and Buyer or until it
shall receive a final  determination  of a court of law,  arbitration  panel, or
similar  adjudicative body, or (ii) it may commence an inter-pleader type action
before  J-A-M-S/ENDISPUTE in accordance with Section 13 of this Escrow Agreement
to  adjudicate  the  rights of Seller  and Buyer.

                                       3
<PAGE>

     14. (a) Any and all  disputes,  claims or  controversies  arising out of or
relating to this Escrow Agreement that are not resolved within ten (10) business
days shall be submitted to final and binding arbitration in New York City before
J-A-M-S/ENDISPUTE,  or its successor,  pursuant to the United States Arbitration
Act, 9 U.S.C.  Sec. 1 et seq.

          (b) Any party hereto may commence the  arbitration  process called for
in  this   Agreement   by  filing  a  written   demand  for   arbitration   with
J-A-M-S/ENDISPUTE,  with a copy to the other parties.  The  arbitration  will be
conducted in accordance with the provisions of  J-A-M-S/ENDISPUTE's  Streamlined
Arbitration  Rules and  Procedures in effect at the time of filing of the demand
for arbitration.  The parties will cooperate with J-A-M-S/ENDISPUTE and with one
another in selecting an arbitrator from  J-A-M-S/ENDISPUTE's  panel of neutrals,
and in scheduling the arbitration  proceedings so that a final determination can
be made within  thirty (30) days after  submission to  arbitration.  The parties
covenant that they will participate in the arbitration in good faith.

          (c) In connection  with an  inter-pleader  type action  brought by the
Escrow Agent, Buyer and Seller agree that the Escrowed Property may be deposited
with  or  delivered  to  J-A-M-S/ENDISPUTE  and  held by  them  pending  a final
determination  of the  arbitration.  Buyer and Seller agree that they will share
equally the costs of any arbitration under this Escrow Agreement.

          (d) Once an award is rendered,  the  arbitrator  shall  determine  the
allocation of costs and expenses of the arbitration, including  attorneys' fees,
between the parties,  except that Escrow  Agent shall have no liability  for any
costs or  expenses  of any  other  party  and shall be paid all of its costs and
expenses by Buyer and Seller  pursuant  to Section 17 of this Escrow  Agreement.
The  provisions  of this  arbitration  clause  may be  enforced  by any Court of
competent  jurisdiction,  and the party seeking enforcement shall be entitled to
an award of all costs, fees and expenses,  including attorneys' fees, to be paid
by the party against whom  enforcement  is ordered.

     15. For the  purpose of this  Escrow  Agreement,  a  determination  will be
deemed final once Escrow Agent receives a written notification from counsel that
no appeal of the  determination  is  permitted,  or that the time to appeal  has
expired.

     16.  Escrow  Agent  may  act in  reliance  upon  any  notice,  instruction,
certificate,  statement,  request, consent,  confirmation,  agreement,  judicial
decision, arbitration award or other document or instrument which it believes in
good faith to be genuine and to have been signed or rendered by a proper  person
or persons, and may assume that any officer of Buyer purporting to act on behalf
of Buyer in giving any such notice or other  instrument in  connection  with the
provisions  hereof  has been duly  authorized  to do so.

                                       4
<PAGE>

     17. In the event that Escrow Agent,  by written  notice,  requests  jointly
executed  instructions  from Seller and Buyer  regarding  any matter  arising in
connection  with this  Escrow  Agreement  and  Seller  and Buyer do not  deliver
reasonably satisfactory written instructions to Escrow Agent in relation to such
matter,  within fifteen (15) days after the giving of such notice,  Escrow Agent
may retain counsel to advise it in such connection or act pro se.
                                                          --- --

     18. (a) In the event that Escrow Agent retains counsel or otherwise  incurs
any  legal  fees by  virtue  of any  provision  of this  Escrow  Agreement,  the
reasonable fees and disbursements of such counsel and any other liability,  loss
or expense which it may thereafter reasonably suffer or incur in connection with
this Escrow Agreement or the performance or attempted  performance in good faith
of its duties hereunder shall be paid (or reimbursed to it) by Seller and Buyer,
jointly and  severally.  In the event that Escrow  Agent  becomes a party to any
litigation  in connection  with its  functions as escrow agent  pursuant to this
Escrow  Agreement,  whether  such  litigation  is brought by or against  it, the
reasonable  fees and  disbursements  of counsel to Escrow  Agent and the amounts
attributable  to services  rendered by members or  associates of Escrow Agent at
the then prevailing hourly rates charged by them and  disbursements  incurred by
them, together with any other liability, loss or expense which it may reasonably
suffer or incur in connection therewith,  shall be paid (or reimbursed to it) by
Seller and Buyer, jointly and severally,  unless such loss, liability or expense
is due to the willful breach by Escrow Agent of its duties hereunder. Seller and
Buyer, shall each be responsible for one-half of any amounts payable jointly and
severally by them to, or on behalf of, Escrow Agent pursuant to this  Agreement.

          (b) Seller and Buyer  jointly  and  severally  hereby  unconditionally
agree to indemnify  Escrow  Agent and hold it harmless  from and against any and
all expenses, damages, actions, suits or other charges incurred by or brought or
assessed against if except as a result of its willful breach of its duties under
this Escrow Agreement, for (i) anything done or omitted by it in the performance
of its duties hereunder,  or (ii) on account of its acting in its capacity as an
escrow agent or stakeholder  hereunder.

          (c) All  reasonable  expenses  incurred by Escrow Agent in  connection
with the performance of its duties  hereunder will be paid (or reimbursed to it)
by Seller and Buyer, jointly and severally.

          (d) The  agreements  contained in this  paragraph 17 shall survive any
termination of the duties of Escrow Agent hereunder.

                                       5
<PAGE>

     19. Escrow Agent may resign at any time and be  discharged  from its duties
as Escrow Agent hereunder by giving Seller and Buyer at least fifteen (15) days'
prior written notice thereof (the "Resignation  Notice"). As soon as practicable
after its  resignation,  Escrow  Agent shall turn over to the  successor  Escrow
Agent  appointed by Seller and Buyer the Escrowed  Property  then held by Escrow
Agent upon presentation of the document  appointing the new Escrow Agent and its
acceptance  thereof.  If no new Escrow Agent is so appointed  within thirty (30)
days  following the  Resignation  Notice,  Escrow Agent may deposit the Escrowed
Property with, and commence an inter-pleader or other appropriate action in, any
court of competent  jurisdiction.

     20. The terms and  provisions  of this Escrow  Agreement may not be waived,
discharged or terminated  orally, but only by an instrument in writing signed by
the person or persons  against  whom  enforcement  of the  discharge,  waiver or
termination is sought.

     21. Escrow Agent shall not be bound by any  modification  of the provisions
of this Escrow  Agreement,  unless such modification is in writing and signed by
Seller and Buyer,  and, with respect to any modification in its duties or rights
hereunder,  it shall have given its prior written consent thereto.

     22. From time to time,  Seller and Buyer will,  execute such  documents and
perform such acts as Escrow Agent may reasonably request and as may be necessary
to enable  Escrow  Agent to  perform  its duties  hereunder  or  effectuate  the
transactions  contemplated by thus Escrow  Agreement.

     23. The rights created by this Escrow  Agreement shall inure to the benefit
of,  and the  obligations  created  hereby  shall be  binding  upon,  the heirs,
successors,  assigns and personal  representatives  of Escrow Agent,  Seller and
Buyer.

     24.  This  Escrow  Agreement  shall  be  governed  by,  and its  provisions
construed in accordance with the laws of the State of New York.

     IN WITNESS WHEREOF, the parties hereto have caused this Escrow
Agreement to be duly executed as of the day and year first above written.

                                          /s/ Bruce R. Kalisch
                                          -----------------------------------
                                                    Bruce R. Kalisch

                                          INTERBORO HOLDING, INC.

                                          By:/s/ Richard Goldenberg
                                             --------------------------------
                                                    Richard Goldenberg,
                                                    Chief Financial Officer

                                          FISCHBEIN BADILLO WAGNER HARDING

                                          By: /s/ Joseph D. Alperin
                                             --------------------------------
                                                 Joseph D. Alperin, Partner

                                      6<PAGE>

                                                                    EXHIBIT 10.1

                             DCH TECHNOLOGY, INC.
                            STOCK OPTION AGREEMENT

     This STOCK OPTION AGREEMENT (this "Agreement") is made effective as of
12/31/1999 (the "Option Grant Date"), by and between DCH TECHNOLOGY, INC., a
Colorado corporation (the "Company") and Roger Schlichtig, (the "Optionee").

                                   RECITALS

      WHEREAS, the Board of Directors of the Company, by resolutions duly
approved as of 12/31/1999, and for the reasons set forth in said resolutions,
has granted to Optionee a non-statutory option or options (the "Option(s)") to
purchase shares of the Common Stock of the Company on the terms and conditions
set forth herein;

      NOW, THEREFORE, in consideration of the foregoing and of the mutual
covenants set forth herein and other good and valuable consideration, the
parties hereto agree as follows:

                                   AGREEMENT

      1.  The Option(s).  The Optionee may, at his or her option, purchase all
          -------------
or any part of an aggregate of 15,000 shares of Common Stock (the "Optioned
Shares"), at the price of $0.90 per share (the "Option Price"), on the terms and
conditions set forth herein.

      2.  Exercise Date and Exercise.
          --------------------------

          (a)  The Option(s) shall be exercisable as to the Optioned Shares on
      and after January 7th, 2000 and on or before December 31, 2004. Optionee
      acknowledges that he or she understands he has no right whatsoever to
      exercise the Option(s) granted hereunder on or after December 31, 2004
      with respect to any Optioned Shares. Optionee further understands that the
      Option(s) granted hereunder shall expire and become unexercisable as
      provided in Section 6 of this document.

          (b)  This Option shall be deemed exercised as to the shares to be
      purchased when written notice of such exercise has been given to the
      Company at its principal business office by the Optionee with respect to
      the Common Stock to be purchased. Such notice shall be accompanied by (i)
      full payment in cash or cash equivalents or (ii) with shares of Common
      Stock pursuant to Section 3 hereof, or (iii) by any combination of (i),
      (ii) and (iii) as may be determined by the Board with respect to the
      shares to be purchased. An Option may be exercised in Accordance with this
      Section 2 as to all or any portion of the shares covered by an accrued
      installment of the Option from time to time during the applicable, Option
      period, but shall not be exercisable with respect to fractions of a share.

          (c)  As soon as practicable after any proper exercise Options in
      accordance with the provisions of this Agreement, the Company shall,
      without charging transfer or issue tax to the Optionee, deliver to the
      Optionee at the Company's principal executive offices, or such other place
      as shall be mutually acceptable, a certificate or certificates
      representing the shares of Common Stock as to which the Options have been
      exercised. The time of issuance and delivery of the Common Stock may be
      postponed by the Company for such period as may be required for it with
      reasonable diligence to comply with any applicable listing requirements of
      any national or regional securities exchange or regulation applicable to
      the issuance and delivery of such shares.

                                  Page 1 of 4
<PAGE>

      3.  Payment of Exercise Price with Common Stock.  Upon exercise of the
          -------------------------------------------
Options, the Optionee may elect to pay for all or some of the shares of Common
Stock with shares of Common Stock of the Company previously acquired and owned
at the time of exercise by the Optionee, or to be acquired pursuant to exercise
of these Options, subject to all restrictions and limitations of applicable
laws, rules and regulations, and provided that the Optionee will make
representations and warranties satisfactory to the Company regarding his or her
title to the shares used to effect the purchase. The equivalent dollar value of
the shares used to effect the purchase shall be the fair market value of shares
on the date of the purchase as determined by the Board of Directors in its sole
discretion, exercised in good faith.

      4.  Certain Dispositions.  Notwithstanding any provision in this Agreement
          --------------------
to the contrary, in the event the Company or its stockholders enter into an
agreement to dispose of all or substantially all of the assets or capital stock
of the Company by means of a sale, merger, consolidation, reorganization,
liquidation or otherwise, the Optionee shall have the right to receive upon
surrender of his or her Options new options covering shares of the surviving
corporation in the same proportion, at an equivalent option price and subject to
the same terms and conditions as the old Options. For purposes of this
Agreement, the excess of the aggregate fair market value of the shares subject
to such new option immediately after consummation of such disposition of stock
or assets over the aggregate option price of such shares of the surviving
corporation shall not be more than the excess of the aggregate fair market value
of all shares subject to old Options immediately before consummation of such
disposition of stock or assets over the aggregate Option Price of such shares of
the Company, and the new option shall not give the Optionee additional benefits
which such Optionee did not have under the old Option or deprive the Optionee of
benefits which the Optionee had under the old Options. If such substitution of
options is effectuated, the Optionee's rights under the old Options shall
thereupon terminate.

      5.  Lock-Up Agreement for Initial Public Offering.  Notwithstanding any
          ---------------------------------------------
provision in this Agreement to the contrary, the Optionee agrees that he or she
shall not offer, sell, contract to sell, transfer, assign, pledge, encumber,
hypothecate or otherwise dispose of or agree to dispose of any Optioned Shares
for a period (such period not to exceed twelve months from the effective date of
the Company's initial public offering of securities) as may be determined by the
Managing Underwriter of such offering. Optionee consents to entry of stop
transfer instructions with the Company's transfer agent in accordance with this
Section 3.

      6.  Termination of Employment
          -------------------------

      (a) In the event that the Optionee's employment with the Company or
service on the Company's Board of Directors is terminated for any reason other
than death or disability, any unexercised accrued installments of the Options
granted hereunder to such terminated Optionee shall expire and become
exercisable as of the earlier of: (i) the applicable Option Expiration Date or
(ii) a date three years after said termination occurs.

      (b) In the event that the Optionee's employment with the Company is
terminated due to the death or disability of the Optionee, any unexercised
accrued installments of the Options granted hereunder to such Optionee shall
expire and become unexercisable as of the earlier of: (i) the applicable Option
Expiration Date, (ii) the first anniversary of the date of death of such
Optionee (if applicable); or (iii) the first anniversary of the date of
termination of employment by reason of disability (if applicable). Any such
accrued installments of a deceased Optionee may be exercised prior to their
expiration by (and only by) the person or persons to whom the Optionee's Option
rights shall pass by will or by the laws of descent and distribution, if
applicable, subject, however, to all of the terms and conditions of this
Agreement,

                                  Page 2 of 4
<PAGE>

      (c)  For purposes of this Section 6, Optionee shall be deemed employed by
the Company during any period of leave of absence from active employment as
authorized by the Company.

      7.   Representations and Warranties.  As a condition to the exercise of
           ------------------------------
any portion of an Option, the Company may require the person exercising such
Option to make any representation and/or warranty to the Company as may, in the
judgment of counsel to the Company, be required under any applicable law or
regulation, including but not limited to a representation and warranty that the
shares are being acquired 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 under the Securities Act of 1933 or any other
applicable law, regulation or rule of any governmental agency. Optionee hereby
represents to the Company that each of the Options evidenced hereby and the
shares purchasable upon exercise thereof is being acquired only for investment,
for Optionee's own account and without any present intention to sell or
distribute such securities.

The sale of the securities which are the subject of this Agreement has not been
qualified with the Commissioner of Corporations of the State of California and
the issuance of such securities or the payment or receipt of my part of the
consideration therefor prior to such qualification is unlawful, unless the sale
of securities is exempt from the qualification by Section 25100, 25102, or 25105
of the California Corporations Code. The rights of the parties to this agreement
are expressly conditioned upon such qualification being obtained, unless the
sale is so exempt.

      8.   Options Not Transferable.  The Option(s) may be exercised during the
           ------------------------
lifetime of the Optionee only by the Optionee.  The Optionee's rights and
interests under this Agreement and in and to the Option(s) may not be sold,
pledged, hypothecated, assigned, encumbered, gifted or otherwise transferred in
any manner, either voluntarily or involuntarily by operation of law, except by
will or the laws of descent or distribution.

      9.  No Enlargement of Employee Rights.  Nothing in this Agreement shall be
          ---------------------------------
construed to confer upon the Optionee (if an employee) any right to continued
employment with the Company (or an affiliated company), or to restrict in any
way the right of the Company (or an affiliated company if he is an employee
thereof) to terminate his or her employment. Optionee acknowledges that in the
absence of an express written employment agreement to the contrary, Optionee's
employment with the Company may be terminated by the Company at any time, with
or without cause.

      10.  Withholding of Taxes.  Optionee authorizes the Company to withhold,
           --------------------
in accordance with any applicable law, from any compensation payable to him or
her any taxes required to be withheld by federal, state or local law as a result
of the grant of the Option(s) or the issuance of stock pursuant to the exercise
of such Option(s).

      11.  Laws Applicable to Construction.  This Agreement shall be governed by
           -------------------------------
and construed and enforced in accordance with the laws of the State of
California.

      12.  Agreement Binding on Successors.  The terms of this Agreement shall
           -------------------------------
be binding upon the executors, administrators, heirs, successors, transferees
and assignees of the Optionee.

      13.  Costs of Litigation.  In any action at law or in equity to enforce
           -------------------
any of the provisions or rights under this Agreement or the program, the
unsuccessful party to such litigation, as determined by the court in a final
judgment or decree, shall pay the successful party or parties all costs,
expenses and reasonable attorneys' fees incurred by the successful party or
parties (including without limitation costs, expenses and fees on any appeals),
and if the successful party recovers judgment in any such action or proceeding
such costs, expenses and attorneys' fees shall be included as part of the
judgment.

                                  Page 3 of 4
<PAGE>

     14. Necessary Acts. The Optionee agrees to perform all acts and execute and
         --------------
deliver any documents that may be reasonably necessary to carry out the
provisions of this Agreement, including but not limited to all acts and-
documents related to compliance with federal and/or state securities laws.

     15. Counterparts. For convenience, this Agreement may be executed in any
         ------------
number of identical counterparts, each of which shall be deemed a complete
original in itself and may be introduced in evidence or used for any other
purpose without the production of any other counterparts.

     16. Invalid Provisions. In the event that any provision of this Agreement
         ------------------
is found to be invalid or otherwise unenforceable under any applicable law, such
invalidity or unenforceability shall not be construed as rendering any other
provisions contained herein invalid or unenforceable, and all such other
provisions shall be given full force and effect to the same extent as though
the invalid and unenforceable provision was not contained herein.

     IN WITNESS WHEREOF, the Company and the Optionee have executed this
Agreement effective as of the date first written hereinabove.

     DCH TECHNOLOGY, INC.              OPTIONEE

     By: /s/ DAVID A. WALKER           By: /s/ ROGER SCHLICHTIG
        -----------------------           -------------------------
        David A. Walker, President        Roger Schlichtig

                                           2899 Agoura Rd. Apt. 373
                                       ----------------------------
                                       Street Address

                                       Westlake Village  CA 91361
                                       ----------------------------
                                       City and State

                                               ###-##-####
                                       ----------------------------
                                       Social Security Number

     By his or her signature below, the spouse of the Optionee, if such Optionee
be legally married as of the date of his or her execution of this Agreement,
acknowledges that he or she has read this Agreement and is familiar with the
terms and provisions hereof, and agrees to be bound by all the terms and
conditions of said Agreement.

                                        /s/ Lina Blanco
                                        ---------------------------
                                        Spouse

                                                 1-6-2000
                                        ---------------------------
                                        Date

     By his or her signature below the Optionee represents that he or she is not
legally married as of the date of execution of this Agreement.

                                        ---------------------------
                                        Optionee

                                        ---------------------------
                                        Date

                                  Page 4 of 4

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00001-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00001-of-00352.parquet"}]]