Document:

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                                                                   EXHIBIT 10.12

                                    FORM OF
                          CHANGE IN CONTROL AGREEMENT
                          ---------------------------

          THIS AGREEMENT (this "Agreement") is made as of May __, 2000, between
OSCA, Inc., a Delaware corporation (the "Company," and, together with any of its
                                         -------
subsidiaries or successors in interest, including a successor in a Change in
Control (as defined below), the "Employer"), and James H. Tycer ("Executive").
                                 --------                         ---------

          WHEREAS, Executive provides valuable services to the Company and the
Company has determined that it would be in the Company's interest to provide
Executive certain assurances regarding Executive's treatment in the event of a
Change in Control; and

          WHEREAS, Executive desires to secure such assurances;

          NOW, THEREFORE, in consideration of the mutual covenants contained
herein and other good and valuable consideration, the receipt and sufficiency of
which are hereby acknowledged, the parties hereto agree as follows:

     1.   Severance Payment.
          -----------------

          (a) If, subject to the conditions set forth in Section 1(b) below,
Executive's employment with the Employer is terminated under the circumstances
contemplated by Section 1(b), Employer shall pay Executive a lump sum severance
payment (the "Severance Payment") equal to [one/two times] Executive's Annual
Compensation as in effect prior to the Change in Control.

          (b) Executive shall only be entitled to the Severance Payment if:  (i)
the Company has undergone a Change in Control prior to the fifth anniversary of
the date of this Agreement; and (ii) Executive makes himself immediately
available for continued employment by the Company's successor in interest in
such Change in Control; and (iii) (A) such successor in interest elects not to
continue Executive's employment in connection with such Change in Control or (B)
                                                                          --
prior to the first anniversary of such Change in Control, Executive's employment
with the Employer is terminated by the Employer without Cause or Executive
resigns from the Employer with Good Reason; and (iv) Executive executes a
general release of the Employer in the form attached hereto as Annex A.  For the
                                                               -------
avoidance of doubt, if Executive's employment with the Employer terminates under
any other circumstances, including by reason of death, disability, retirement,
resignation without Good Reason or termination by the Employer for Cause,
Executive shall not be entitled to any severance payment whatsoever.

          (c) The Employer shall pay  the Severance Payment to Executive in cash
or wire transfer of immediately available funds within 30 days of the
termination of his employment under the circumstances contemplated by Section
1(b).  If Executive dies after such termination but before the Severance Payment
is paid in full, Employer shall pay the Severance Payment to Executive's legal
heir or estate.  The Severance Payment shall be subject to all required tax
withholding by the Employer.
<PAGE>

          (d)  In addition to the payment provided under Section 1(a) hereof, if
Executive's employment with the Employer is terminated under the circumstances
contemplated by Section 1(b), all outstanding stock options previously granted
to Executive, and not yet expired, will become fully and immediately vested and
exercisable by Executive on the date of termination of Executive's employment
with Employer and for such period of time thereafter as shall be permitted
pursuant to the applicable stock option plan and stock award agreements.

          2.   No Guarantee of Employment.  Executive hereby acknowledges and
               --------------------------
agrees that nothing in this Agreement constitutes a guarantee or assurance of
continued employment with the Employer and that his only rights under this
Agreement are to payment of the Severance Payment and immediate vesting of stock
options in accordance with the terms of this Agreement.

          3.   Certain Definitions. The following capitalized terms used in this
               -------------------
Agreement have the meanings set forth below:

          (a)  "Annual Compensation" means Executive's annual base salary as in
                -------------------
effect immediately prior to the Change in Control, plus an amount equal to all
other amounts paid to Executive as wages, bonuses, commissions, profit sharing
or other cash  compensation for services rendered during  the twelve month
period immediately prior to the Change in Control.

          (b)  "Cause" means (i) the commission of a felony or other crime
                -----
involving moral turpitude or the commission of any other act or omission
involving dishonesty, disloyalty or fraud with respect to the Employer or any of
its Subsidiaries or any of their customers or suppliers, (ii) reporting to work
under the influence of alcohol or illegal drugs, the use of illegal drugs
(whether or not at the workplace) or other repeated conduct causing the Employer
or any of its Subsidiaries substantial public disgrace or disrepute or economic
harm, or (iii) substantial and repeated failure to perform duties as reasonably
directed by the Employer's Board of Directors.

          (c)  a "Change in Control"  shall be deemed to have occurred if the
                  -----------------
conditions set forth in any one of the following paragraphs shall have been
satisfied:

          (i)  any "person" (as such term is used in Section 13(d) and 14(d) of
     the Securities Exchange Act of 1934, as amended (the "Exchange Act")) other
     than (i) the Company, (ii) a trustee or other fiduciary holding securities
     under an employee benefit plan of the Company, (iii) an underwriter
     temporarily holding securities pursuant to an offering of such securities,
     or (iv) a corporation owned, directly or indirectly, by the stockholders of
     the Company in substantially the same proportions as their ownership of
     shares of the Company (any such person is hereinafter referred to as a
     "Person"), is or becomes the "beneficial owner" (as defined in Rule 13d-3
     under the Exchange Act), directly or indirectly, of securities of the
     Company representing more than 20% of the combined voting power of the
     Company's then outstanding securities (not including in the securities
     beneficially owned by such Person any securities acquired directly from the
     Company), excluding any Person who becomes such a beneficial owner in
     connection with a transaction described in clause (A) of paragraph (ii)
     below;

                                       2
<PAGE>

          (ii)   there is consummated a merger or consolidation of the Company
     or any direct or indirect subsidiary of the Company with or into any other
     corporation, other than (A) a merger or consolidation which results in the
     directors of the Company immediately prior to such merger or consolidation
     continuing to constitute at least a majority of the Board of Directors of
     the Company, the surviving entity or any parent thereof or (B) a merger or
     consolidation effected to implement a recapitalization of the Company (or
     similar transaction) in which no Person is or becomes the beneficial owner,
     directly or indirectly, of securities of the Company (not including in the
     securities beneficially owned by such Person any securities acquired
     directly from the Company) representing 20% or more of the combined voting
     power of the Company's then outstanding securities;

          (iii)  the stockholders of the Company approve any plan or proposal
     for the liquidation or dissolution of the Company or there is consummated
     an agreement for the sale or disposition by the Company of all or
     substantially all the Company's assets, other than a sale or disposition by
     the Company of all or substantially all of the Company's assets to an
     entity, at least a majority of whose directors were directors of the
     Company immediately prior to such sale or disposition; or

          (iv)   during any period of two consecutive years (not including any
     period prior to the date of this Agreement), individuals who at the
     beginning of such period constitute the Board of Directors of the Company
     and any new director (other than a director whose initial assumption of
     office is in connection with an actual or threatened election contest,
     including but not limited to a consent solicitation, relating to the
     election of directors of the Company) whose appointment or election by the
     Board of Directors of the Company or nomination for election by the
     Company's stockholders was approved or recommended by a vote of at least
     two-thirds (2/3) of the directors then still in office who either were
     directors at the beginning of the period or whose appointment, election or
     nomination for election was previously so approved, cease for any reason to
     constitute a majority thereof.

     Where a Change in Control results from a series of related transactions,
the Change in Control shall be deemed to have occurred on the date of the
consummation of the first such transaction.

     Notwithstanding any other provision hereof, a Change in Control shall not
be deemed to have occurred by virtue of the consummation of any transaction or
series of integrated transactions immediately following which the record holders
of the common stock of the Company immediately prior to such transaction or
series of transactions continue to have substantially the same proportionate
ownership in an entity which owns all or substantially all of the assets of the
Company immediately following such transaction or series of transactions.

          (d)    Executive shall be deemed to have terminated his employment
with the Employer with "Good Reason" if, prior to such termination:
                        -----------

          (i)    the Employer has reduced Executive's base salary or rate of
     compensation as in effect immediately prior to the Change in Control; or

                                       3
<PAGE>

          (ii)  the Employer has assigned Executive duties and responsibilities
     substantially different than those in effect immediately prior to the
     Change in Control; or

          (iii) the Employer requires Executive to change the location of his
     job or office to a location more than 40 miles from the location in effect
     immediately prior to the Change in Control provided that such new location
     is not closer to Executive's primary residence; or

          (iv)  the Employer fails to provide Executive with pension plans,
     401(k) plans, life insurance plans, health, accident or disability plans,
     or other health, welfare and retirement benefits materially equal to those
     in effect immediately prior to the Change in Control.

          (e)   "Subsidiary" means any corporation or other entity of which the
                 ----------
securities or other ownership interests having the voting power to elect a
majority of the board of directors or other governing body are, at the time of
determination, owned by the Employer, directly or through one of more
Subsidiaries.

          4.    Severability.  Whenever possible, each provision of this
                ------------
Agreement shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement is held to be invalid,
illegal or unenforceable in any respect under any applicable law or rule in any
jurisdiction, such invalidity, illegality or unenforceability shall not affect
any other provision or any action in any other jurisdiction, but this Agreement
shall be reformed, construed and enforced in such jurisdiction as if such
invalid, illegal or unenforceable provision had never been contained herein.

          5.    Complete Agreement.  Subject to any rights of Executive pursuant
                ------------------
to applicable law, applicable benefit plans and stock award agreements, this
Agreement embodies the complete agreement and understanding among the parties
and supersedes and preempts any prior understandings, agreements or
representations by or among the parties, written or oral, which may have related
to the subject matter hereof in any way (including, without limitation, the
Transition Payment Agreement between the parties hereto, dated __________).

          6.    No Strict Construction.  The language used in this Agreement
                ----------------------
shall be deemed to be the language chosen by the parties hereto to express their
mutual intent, and no rule of strict construction shall be applied against any
party.

          7.    Counterparts.  This Agreement may be executed in separate
                ------------
counterparts, each of which is deemed to be an original and all of which taken
together constitute one and the same agreement.

          8.    Successors and Assigns.  This Agreement is intended to bind and
                ----------------------
inure to the benefit of and be enforceable by Executive, the Company and their
respective heirs, successors and assigns, except that Executive may not assign
his rights or delegate his duties or obligations hereunder without the prior
written consent of the Company.

          9.    Choice of Law.  All issues and questions concerning the
                -------------
construction, validity, enforcement and interpretation of this Agreement and the
annex attached hereto shall

                                       4
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be governed by, and construed in accordance with, the laws of the State of
Delaware, without giving effect to any choice of law or conflict of law rules or
provisions (whether of the State of Delaware or any other jurisdiction) that
would cause the application of the laws of any jurisdiction other than the State
of Delaware.

          10.  Amendment and Waiver.  The provisions of this Agreement may be
               --------------------
amended or waived only with the prior written consent of the Employer and
Executive, and no course of conduct or course of dealing or failure or delay by
any party hereto in enforcing or exercising any of the provisions of this
Agreement shall affect the validity, binding effect or enforceability of this
Agreement or be deemed to be an implied waiver of any provision of this
Agreement.

                             *    *    *    *    *
<PAGE>

          IN WITNESS WHEREOF, the parties hereto have executed this Change in
Control Agreement as of the date first written above.

                                   OSCA, INC.

                                   ___________________________________________
                                   By:
                                   Its:

                                   EXECUTIVE

                                   ___________________________________________
                                   By: James H. Tycer
<PAGE>

                                                                         Annex A

                                GENERAL RELEASE

     I, James H. Tycer, in consideration of and subject to the performance by
OSCA, Inc., a Delaware corporation or its successor in interest (together with
its subsidiaries, the "Company"), of its material obligations under the Change
                       -------
in Control Agreement, dated as of [___________, 2000] (the "Agreement"), do
                                                            ---------
hereby release and forever discharge as of the date hereof the Company and all
present and former directors, officers, agents, representatives, employees,
successors and assigns or predecessors of the Company and its direct or indirect
owners (collectively, the "Released Parties") to the extent provided below.
                           ----------------

1.   I understand that any payments or benefits paid or granted to me under
     Section 1 of the Agreement represent, in part, consideration for signing
     this General Release and are not salary, wages or benefits to which I was
     already entitled. I understand and agree that I will not receive the
     payments and benefits specified in Section 1 of the Agreement unless I
     execute this General Release and do not revoke this General Release within
     the time period permitted hereafter or breach this General Release.

2.   Except as provided in paragraph 4 below, I knowingly and voluntarily
     release and forever discharge the Company and the other Released Parties
     from any and all claims, controversies, actions, causes of action, cross-
     claims, counter-claims, demands, debts, compensatory damages, liquidated
     damages, punitive or exemplary damages, other damages, claims for costs and
     attorneys' fees, or liabilities of any nature whatsoever in law and in
     equity, both past and present (through the date of this General Release)
     and whether known or unknown, suspected, or claimed against the Company or
     any of the Released Parties which I, my spouse, or any of my heirs,
     executors, administrators or assigns, may have, which arise out of or are
     connected with my employment with, or my separation from, the Company
     (including, but not limited to, any allegation, claim or violation, arising
     under: Title VII of the Civil Rights Act of 1964, as amended; the Civil
     Rights Act of 1991; the Age Discrimination in Employment Act of 1967, as
     amended (including the Older Workers Benefit Protection Act); the Equal Pay
     Act of 1963, as amended; the Americans with Disabilities Act of 1990; the
     Family and Medical Leave Act of 1993; the Civil Rights Act of 1866, as
     amended; the Worker Adjustment Retraining and Notification Act; the
     Employee Retirement Income Security Act of 1974; any applicable Executive
     Order Programs; the Fair Labor Standards Act; or their state or local
     counterparts; or under any other federal, state or local civil or human
     rights law, or under any other local, state, or federal law, regulation or
     ordinance; or under any public policy, contract or tort, or under common
     law; or arising under any policies, practices or procedures of the Company;
     or any claim for wrongful discharge, breach of contract, infliction of
     emotional distress, defamation; or any claim for costs, fees, or other
     expenses, including attorneys' fees incurred in these matters) (all of the
     foregoing collectively referred to herein as the "Claims").
                                                       ------

3.   I represent that I have made no assignment or transfer of any right, claim,
     demand, cause of action, or other matter covered by paragraph 2 above.

                                      A-1
<PAGE>

4.   I agree that this General Release does not waive or release any (i) rights
     or claims that I may have under the Age Discrimination in Employment Act of
     1967 which arise after the date I execute this General Release; or (ii) any
     claims with respect to accrued benefits under employee benefit plans
     maintained by the Company or any claims arising from the Company's
     obligation to provide any benefits (other than severance benefits) to which
     I may be entitled under applicable plan provisions (as amended from time to
     time) based on the date of termination of employment with the Company.  In
     addition, the release of all claims shall not affect currently pending
     workers compensation proceedings or claims, nor the right of either party
     to enforce the terms of the Agreement and this General Release. I
     acknowledge and agree that my separation from employment with the Company
     in compliance with the terms of the Agreement shall not serve as the basis
     for any claim or action (including, without limitation, any claim under the
     Age Discrimination in Employment Act of 1967).

5.   In signing this General Release, I acknowledge and intend that it shall be
     effective as a bar to each and every one of the Claims hereinabove
     mentioned or implied. I expressly consent that this General Release shall
     be given full force and effect according to each and all of its express
     terms and provisions, including those relating to unknown and unsuspected
     Claims (notwithstanding any state statute that expressly limits the
     effectiveness of a general release of unknown, unsuspected and
     unanticipated Claims), if any, as well as those relating to any other
     Claims hereinabove mentioned or implied. I acknowledge and agree that this
     waiver is an essential and material term of this General Release and that
     without such waiver the Company would not have agreed to the terms of the
     Agreement.  I further agree that in the event I should bring a Claim
     seeking damages against the Company, or in the event I should seek to
     recover against the Company in any Claim brought by a governmental agency
     on my behalf, this General Release shall serve as a complete defense to
     such Claims. I further agree that I am not aware of any pending charge or
     complaint of the type described in paragraph 2 as of the execution of this
     General Release.

6.   I agree that neither this General Release, nor the furnishing of the
     consideration for this General Release, shall be deemed or construed at any
     time to be an admission by the Company, any Released Party or myself of any
     improper or unlawful conduct.

7.   I agree that I will forfeit all amounts payable by the Company pursuant to
     the Agreement if I challenge the validity of this General Release. I also
     agree that if I violate this General Release by suing the Company or the
     other Released Parties for claims waived by this General Release, I will
     pay all costs and expenses of defending against the suit incurred by the
     Released Parties, including reasonable attorneys' fees, and return all
     payments received by me pursuant to the Agreement.

8.   I agree that this General Release is confidential and agree not to disclose
     any information regarding the terms of this General Release, except to my
     immediate family and any tax, legal or other counsel I have consulted
     regarding the meaning or effect hereof or as required by law, and I will
     instruct each of the foregoing not to disclose the same to anyone.

                                      A-2
<PAGE>

9.   Any non-disclosure provision in this General Release does not prohibit or
     restrict me (or my attorney) from responding to any inquiry about this
     General Release or its underlying facts and circumstances by the Securities
     and Exchange Commission (SEC), the National Association of Securities
     Dealers, Inc. (NASD), any other self-regulatory organization or
     governmental entity.

10.  I agree to reasonably cooperate with the Company in any internal
     investigation or administrative, regulatory, or judicial proceeding. I
     understand and agree that my cooperation may include, but not be limited
     to, making myself available to the Company upon reasonable notice for
     interviews and factual investigations; appearing at the Company's request
     to give testimony without requiring service of a subpoena or other legal
     process; volunteering to the Company pertinent information; and turning
     over to the Company all relevant documents which are or may come into my
     possession all at times and on schedules that are reasonably consistent
     with my other permitted activities and commitments. I understand that in
     the event the Company asks for my cooperation in accordance with this
     provision, the Company will reimburse me solely for reasonable travel
     expenses, including lodging and meals, upon my submission of receipts.

11.  Notwithstanding anything in this General Release to the contrary, this
     General Release shall not relinquish, diminish, or in any way affect any
     rights or claims arising out of any breach by the Company or by any
     Released Party of the Agreement.

12.  Whenever possible, each provision of this General Release shall be
     interpreted in, such manner as to be effective and valid under applicable
     law, but if any provision of this General Release is held to be invalid,
     illegal or unenforceable in any respect under any applicable law or rule in
     any jurisdiction, such invalidity, illegality or unenforceability shall not
     affect any other provision or any other jurisdiction, but this General
     Release shall be reformed, construed and enforced in such jurisdiction as
     if such invalid, illegal or unenforceable provision had never been
     contained herein.

BY SIGNING THIS GENERAL RELEASE, I REPRESENT AND AGREE THAT:

(a)  I HAVE READ IT CAREFULLY;

(b)  I UNDERSTAND ALL OF ITS TERMS AND KNOW THAT I AM GIVING UP IMPORTANT
     RIGHTS, INCLUDING BUT NOT LIMITED TO, RIGHTS UNDER THE AGE DISCRIMINATION
     IN EMPLOYMENT ACT OF 1967, AS AMENDED, TITLE VII OF THE CIVIL RIGHTS ACT OF
     1964, AS AMENDED; THE EQUAL PAY ACT OF 1963, THE AMERICANS WITH
     DISABILITIES ACT OF 1990; AND THE EMPLOYEE RETIREMENT INCOME SECURITY ACT
     OF 1974, AS AMENDED;

(c)  I VOLUNTARILY CONSENT TO EVERYTHING IN IT;

(d)  I HAVE BEEN ADVISED TO CONSULT WITH AN ATTORNEY BEFORE EXECUTING IT AND I
     HAVE DONE SO OR, AFTER CAREFUL READING AND CONSIDERATION I HAVE CHOSEN NOT
     TO DO SO OF MY OWN VOLITION;

                                      A-3
<PAGE>

(e)  I HAVE HAD AT LEAST 21 DAYS FROM THE DATE OF MY RECEIPT OF THIS RELEASE
     SUBSTANTIALLY IN ITS FINAL FORM ON _______________ __, _____ TO CONSIDER IT
     AND THE CHANGES MADE SINCE THE _______________ __, _____ VERSION OF THIS
     RELEASE ARE NOT MATERIAL AND WILL NOT RESTART THE REQUIRED 21-DAY PERIOD;

(f)  THE CHANGES TO THE AGREEMENT SINCE _______________ ___, _____ EITHER ARE
     NOT MATERIAL OR WERE MADE AT MY REQUEST.

(g)  I UNDERSTAND THAT I HAVE SEVEN DAYS AFTER THE EXECUTION OF THIS RELEASE TO
     REVOKE IT AND THAT THIS RELEASE SHALL NOT BECOME EFFECTIVE OR ENFORCEABLE
     UNTIL THE REVOCATION PERIOD HAS EXPIRED;

(h)  I HAVE SIGNED THIS GENERAL RELEASE KNOWINGLY AND VOLUNTARILY AND WITH THE
     ADVICE OF ANY COUNSEL RETAINED TO ADVISE ME WITH RESPECT TO IT; AND

(i)  I AGREE THAT THE PROVISIONS OF THIS GENERAL RELEASE MAY NOT BE AMENDED,
     WAIVED, CHANGED OR MODIFIED EXCEPT BY AN INSTRUMENT IN WRITING SIGNED BY AN
     AUTHORIZED REPRESENTATIVE OF THE COMPANY AND BY ME.

DATE: ___________ __, ______                  ______________________________

                                      A-4<PAGE>

                                                                    Exhibit 10.1

                              PPG INDUSTRIES, INC.

                             INCENTIVE COMPENSATION

                                      AND

                              DEFERRED INCOME PLAN

                                      FOR

                                 KEY EMPLOYEES

                                                    Effective: February 15, 1995
                                             As Amended 4/17/96; 2/18/98; 1/1/99
                                               As Further Amended April 19, 2000
<PAGE>

                              Table of Contents
                              -----------------

Section     I                           Definitions

Section    II                           Awards

Section   III                           Capital Enhancement
                                         Account

Section    IV                           Withdrawal Provisions

Section     V                           Specific Provisions Related
                                         to Benefits

Section    VI                           Administration & Claims

Section   VII                           Amendment & Termination

Section  VIII                           Miscellaneous

Section    IX                           Change in Control

                                      i
<PAGE>

                           SECTION I - DEFINITIONS
                           -----------------------

1.01  Administrator means an officer or officers of the Company appointed by the
      Committee, and any person(s) designated by such Administrator to assist in
      the administration of the Plan.

1.02  Award means a grant of incentive compensation.

1.03  Beneficiary means the person or persons designated by a Participant to
      receive benefits hereunder following the Participant's death, in
      accordance with section 5.02; provided, however, in the event a
      Participant fails to designate a Beneficiary in accordance with Section
      5.02, his/her Beneficiary shall be the Beneficiary designated under the
      Deferred Compensation Plan.  For purposes of this Section 1.05, "person
      or persons" is limited to an individual, a Trustee or a Participant's
      estate.

1.04  Board means the Board of Directors of PPG Industries, Inc.

1.05  Capital Enhancement Account or Account means a bookkeeping account or
      accounts maintained for a Participant who, for such period or periods as
      the Committee may establish or permit, elects to defer all or any part of
      an Award in the form of cash or Salary, as provided in Section 3.01.

1.06  CEA-1 means all funds contributed to the Capital Enhancement Account
      during the period August 1, 1985 thru July 31, 1986, and earnings thereon.

1.07  CEA-2 means all funds contributed to the Capital Enhancement Account
      during the period November 1, 1987 thru December 31, 1988, and earnings
      thereon.

1.08  CEBC means the Compensation and Employee Benefits Committee of the
      Company.

1.09  Code means the Internal Revenue Code of 1986, as amended.

1.10  Committee means the Officers-Directors Compensation Committee (or any
      successor) of the Board.

1.11  Company or PPG means PPG Industries, Inc.

1.12  Conversion Formula means dividing an amount by the average of the closing
      sale prices for PPG Stock reported on the New York Stock Exchange-
      Composite Tape for all days in the month of January during which the New
      York Stock Exchange is open during the year following the Plan Year to
      which the Award relates.

                                 - Page 1.1 -
<PAGE>

1.13  Corporation means PPG and any Subsidiary Corporation designated by the
      Committee as eligible to participate in the Plan, and which, by proper
      authorization of the Board of Directors or other governing body of such
      Subsidiary Corporation, elects to participate in the Plan.

1.14  Deferred Compensation Plan means the PPG Industries, Inc. Deferred
      Compensation Plan.

1.15  Disability means any long-term disability.  The Administrator, in his
      complete and sole discretion, shall determine a Participant's Disability;
      provided, however, that a Participant who is approved to receive Long-Term
      Disability benefits pursuant to the PPG Industries, Inc. Long-Term
      Disability Plan shall be considered to have a Disability.  The
      Administrator may require that a Participant submit to an examination from
      time to time, but no more often than annually, at the expense of the
      Company, by a competent physician or medical clinic, selected by the
      Administrator, to confirm Disability.  On the basis of such medical
      evidence, the determination of the Administrator as to whether or not a
      condition of Disability exists or continues shall be conclusive.

1.16  Employee means any full-time, or permanent part-time employee (including
      any officer) of the Corporation.

1.17  ERISA means the Employee Retirement Income Security Act of 1974, as
      amended.

1.18  Financial Hardship means an unexpected need for cash arising from an
      illness, casualty loss, sudden financial reversal, or other such
      unforeseeable occurrence, as determined by the Administrator, in his
      complete and sole discretion.

1.19  Former Participant means a Participant who becomes ineligible to receive
      an Award but who continues to have an Account hereunder.

1.20  Insider means a Participant or a Former Participant who at any time within
      the prior six (6) months was a person subject to Section 16 of the
      Securities Act of 1934.

1.21  Minimum Rate - means the average of the daily closing yields during
      November of 10-year Treasury Notes.

1.22  Participant means an Employee who is approved by the CEBC, or the
      Committee, as appropriate, to participate.  Participants shall be limited
      to key Employees of the Corporation who contribute the most to the growth
      and profitability of the Company.

                                 - Page 1.2 -
<PAGE>

1.23  Plan Year means the calendar year.

1.24  Pre-tax Earnings means the consolidated earnings of the Company and its
      consolidated Subsidiaries and equity affiliates before the deduction of
      income taxes, minority interest and the amount to be set aside in the
      Reserve as provided in Section 2.01.  The Reserve shall not be adjusted
      for any restatements of prior years' earnings.

1.25  PPG Stock means Common Stock of the Company.

1.26  Reserve means the aggregate of the amounts available for the making of
      Awards as provided in Section 2.01.

1.27  Retired Participant means a Participant who elects to maintain an Account
      in the Plan after his/her Retirement Date.

1.28  Salary means the regular base salary to be paid to a Participant by the
      Corporation.

1.29  Subsidiary means any corporation of which fifty percent (50%) or more of
      the outstanding voting stock or voting power is owned, directly or
      indirectly, by the Company and any partnership or other entity in which
      the Company has a fifty percent (50%) or more ownership interest.

1.30  Terminated Participant means a Participant who maintains an Account in the
      Plan following his/her termination of employment from the Corporation.

                                 - Page 1.3 -
<PAGE>

                             SECTION II - AWARDS
                             -------------------

2.01 The Reserve
     -----------

     (a)  For purposes of establishing a Reserve, an amount shall be set aside
          each year to be calculated as follows:

          (1)  Multiply consolidated shareholders' equity as of the beginning of
               the year by 12%;

          (2)  Subtract the result of (1) above from Pre-tax Earnings for the
               year;

          (3)  Multiply the result of (2) above by 5%.

     (b)  In no event, may the amount set aside exceed 20% of the cash dividends
          paid on PPG Stock during the year.

     (c)  For purposes of subparagraph (a)(1) above, "shareholders' equity"
          shall be exclusive of the aggregate par or stated value of preferred
          stock outstanding, if any, and of any unpaid cumulative dividends
          thereon.

     (d)  The Reserve shall be reduced by the amount of all Awards, including
          any deferred amounts, first from the amount, if any, set aside for the
          year to which the Awards relate, and then from the amounts which have
          been in the Reserve for the longest period of time.

     (e)  Unawarded amounts set aside prior to the fourth preceding year shall
          be automatically released from the Reserve and returned to income.

     (f)  The Reserve shall not be reduced by interest or dividend equivalents
          on deferred amounts, dividends paid on restricted shares, negative
          amounts resulting from the calculation of the amount to be set aside
          each year, or the expenses of administering the Plan.

     (g)  Not later than the last day of the year to which the Awards relate,
          the Committee may make an allocation (on the basis of estimates of the
          amount to be set aside in the Reserve for such year and unawarded
          amounts in the Reserve) to a group of Employees without determining
          the amounts to be allocated to individuals in such group and such
          allocation shall create a legal obligation upon the Company to pay
          such amount to the individuals comprising such group.

                                 - Page 2.1 -
<PAGE>

2.02 Awards
     ------

     (a)  The Committee shall determine or approve:

          (1)  The Participants;

          (2)  The maximum amount of all Awards to all Participants; and

          (3)  The amount and the form of the Award to each Participant.

     (b)  The Committee may delegate to another person(s) the authority to
          determine:

          (1)  The Participants, other than Insiders; and

          (2)  The amount of Awards to such Participants.

     (c)  Awards may be made only from the Reserve; provided, however, that the
          Committee is under no obligation to make Awards; or, if Awards are
          made, to award the total amount set aside in the Reserve each year.

     (d)  Awards may be made in the form of cash, shares of PPG Stock, or a
          combination of both.

2.03 Payment of Awards
     -----------------

     (a)  Awards to Participants will be made in the form of cash ("cash
          component"), shares of PPG Stock ("stock component"), or a combination
          of both, as the Committee may determine.

     (b)  If all or any part of an Award is made in the form of shares of PPG
          Stock, the number of such shares shall be determined by applying the
          Conversion Formula.  Fractional shares shall be paid in cash.

          If the number of such shares is specified, the Reserve shall be
          reduced on account of such shares by an amount determined by applying
          the Conversion Formula in reverse.

          As to shares of PPG Stock which constitute all or any part of an
          Award, the Committee may impose such restrictions concerning their
          transferability and/or their forfeitability as are provided for in
          Section 5.05.

                                 - Page 2.2 -
<PAGE>

     (c)  Payment of Awards shall be made to Participants not later than March
          15 of the year following the end of the year to which the Awards
          relate.

2.04 Deferral of Awards
     ------------------

     (a)  Prior to the beginning of each Plan Year, a Participant may elect to
          defer a percentage, in whole percentages only, of his/her Award, as
          follows:

                                 Minimum Deferral     Maximum Deferral
                                 ----------------     ----------------

          Cash component                10%                 100%
          Stock component              100%                 100%

     (b)  Except as otherwise provided in paragraph (c) below, all elections
          pursuant to this Section 2.04 must be filed with the Administrator no
          later than the last day of the Plan Year prior to the Plan Year to
          which an Award relates; and such election shall become irrevocable as
          of the first day of the Plan Year to which it relates.

     (c)  Employees who are approved to participate during a Plan Year, may make
          an election in accordance with this Section 2.04 within the 30-day
          period following notice to the Participant that he/she has been
          approved.

     (d)  Amounts deferred in accordance with this section 2.04 shall be
          credited to the Participant's account in the Deferred Compensation
          Plan and shall be subject to the provisions of the Deferred
          Compensation Plan.

     (e)  Amounts deferred in accordance with this Plan prior to January 1,
          1996, which have not been withdrawn by January 1, 1996, shall be
          transferred to the Deferred Compensation Plan, in accordance with the
          provisions of such Plan.

     2.04.01  Investment Elections
              --------------------

              (a)   At the time an election is made to defer all or a portion of
                    the cash component of a Award, the Participant must also
                    designate whether such amount is to be credited to the
                    Interest Account, the PPG Stock Account, or a combination of
                    both in the Deferred Compensation Plan.

              (b)   At the time an election is made to defer the stock component
                    of an Award, such deferral shall be credited to the PPG
                    Stock Account in the Deferred Compensation Plan.

                                 - Page 2.3 -
<PAGE>

              (c)   Amounts credited to the PPG Stock Account in the Deferred
                    Compensation Plan shall be credited in the form of whole and
                    fractional Stock Account Shares determined according to the
                    Conversion Formula.

     2.04.02  In-Service Withdrawal Elections
              -------------------------------

              (a)   Subject to the provisions of this Section 2.04.02, at the
                    time an election is made to defer all or a portion of the
                    cash component of an Award, a Participant may designate all
                    or a portion of the cash component of such deferred amount,
                    not including any earnings thereon, to be paid during a
                    specified quarter/year.

              (b)   Withdrawal elections made pursuant to this Section may not
                    specify a year which is any sooner than the fourth Plan Year
                    after the Plan Year in which the deferred amount is credited
                    to the Participant's Account.

              (c)   Any amount subject to withdrawal pursuant to this Section,
                    must be invested in the Interest Account in the Deferred
                    Compensation Plan.

              (d)   Any election made in accordance with this subjection 2.04.02
                    shall be irrevocable.

                                 - Page 2.4 -
<PAGE>

                  SECTION III - CAPITAL ENHANCEMENT ACCOUNT
                  -----------------------------------------

3.01 Deferrals of Salary to Capital Enhancement Account
     --------------------------------------------------

     (a)  Subject to any minimum/maximum limits established by the Committee,
          each prospective Participant, or such prospective Participant as the
          Committee deems appropriate, may be given an opportunity to make an
          election to defer payment of all or any part of his/her Salary and/or
          Award, to be credited to the Capital Enhancement Account.

     (b)  (1)  Subject to subparagraph (2) below, interest equivalents shall be
               credited on amounts deferred to the Capital Enhancement Account
               as follows:

                                     CEA-1
                                     ----

                                  Minimum Rate
                                    plus 5%

          (2)  Except as otherwise provided in subparagraph (3) below, when a
               Participant's employment terminates prior to age 62, interest
               equivalents shall be recalculated at the Minimum Rate for CEA-1
               for the total period such amounts were invested in the Capital
               Enhancement Account, unless:

               (i)  with respect to any Participant who is an Insider, the
                    Committee, in its sole discretion, specifically determines
                    such Participant is entitled to the interest rate described
                    in subparagraph (1) above; or

               (ii) with respect to any Participant who is not an Insider, the
                    Compensation and Employee Benefits Committee, in its sole
                    discretion, specifically determines such Participant is
                    entitled to the interest rate described in subparagraph (1)
                    above.

          (3)  In the case of a Participant whose termination of employment
               prior to age 62 is the result of retirement or a divestiture,
               such Participant shall be entitled to the interest rate described
               in subparagraph (1) above.

     (c)  Designations to credit a deferred amount to the Capital Enhancement
          Account shall be made in such terms on such bases as the Administrator
          may prescribe.

                                 - Page 3.1 -
<PAGE>

3.02 Payment of Deferrals from the Capital Enhancement Account
     ---------------------------------------------------------

     Payments from the Capital Enhancement Account shall be made in cash.

3.03 Pre-Retirement Death Benefit
     ----------------------------

     If a Participant dies prior to retirement, the Company shall pay a pre-
     retirement death benefit to such Participant's Beneficiary equal to:

     (a)  For a Participant who had a balance in his/her CEA-2 account at the
          time of death, the balance in the CEA-2 account; and

     (b)  For Participants who had a balance in his/her CEA-1 account at the
          time of death, and who provided evidence of insurability at the time
          of enrollment in CEA-1, the pre-retirement death benefit shall be
          equal the greater of:

          (1)  The CEA-1 account balance; or

          (2)  The original amount deferred into the CEA-1 account (not
               including interest equivalents credited thereon) times the
               applicable factor in the following TABLE:

                                     TABLE
                                     -----

               Attained Age on
               August 1, 1985                       Factor
               --------------                       ------

               44 and under                           15
               45 to 54                                9
               55 and older                            8

3.04 Termination of Capital Enhancement Account - 2 ("CEA-2")
     --------------------------------------------------------

     (a)  Notwithstanding any other provision of Section III or Section IV
          herein, CEA-2 shall be terminated effective December 31, 1998.

     (b)  Participants whose Account contains amounts credited under CEA-2 as of
          January 1, 1998, shall be required to make an election regarding the
          payout of all amounts credited under CEA-2 to be effective on January
          1, 1999.

          (1)  An active Participant may elect:

                                 - Page 3.2 -
<PAGE>

               (A)  To receive the full amount of his/her CEA-2 Account paid in
                    a lump sum in January, 1999; or

               (B)  To have such amount credited to his/her Account in the PPG
                    Industries, Inc. Deferred Compensation Plan.

          (2)  A terminated or retired Participant may elect:

               (A)  To receive the full amount of his/her CEA-2 Account balance
                    paid in a lump sum in January, 1999; or

               (B)  To have his/her Account balance credited to his/her Account
                    in the PPG Industries, Inc. Deferred Compensation Plan.  A
                    Participant who makes an election in accordance with this
                    subparagraph must further elect to receive his/her CEA-2
                    Account balance paid in accordance with the election filed
                    at the time of his/her termination or retirement for
                    payments from:

                    His/her Deferred Compensation Plan Account; or
                    His/her CEA-2 Account.

          (3)  Elections filed in accordance with this paragraph (b) must be
               received by the Administrator no later than June 20, 1998.

               In the event an active Participant fails to make an election in
               accordance with section (b)(1) above, his/her CEA-2 amount shall
               be credited to his/her Account in the PPG Industries, Inc.
               Deferred Compensation Plan.

               In the event a retired or terminated Participant fails to make an
               election in accordance with section (b)(2) above, his/her CEA-2
               amount shall be credited to an account in the PPG Industries,
               Inc. Deferred Compensation Plan and the Participant shall be
               deemed to have elected to receive his/her CEA-2 Account balance
               paid in accordance with the election filed at the time of his/her
               termination or retirement for payments from his/her CEA-2
               Account.

     (c)  Elections made in accordance with subparagraph (b) above shall
          supersede any other elections on file with the Administrator which
          were made in accordance with Section IV.

     (d)  Section 4.02 shall apply to any Participant whose employment is
          terminated notwithstanding any election filed in accordance with this
          Section 3.04.

                                 - Page 3.3 -
<PAGE>

                      SECTION IV - WITHDRAWAL PROVISIONS
                      ----------------------------------

4.01 Withdrawals at/after a Participant's Retirement Date
     ----------------------------------------------------

     (a)  A Participant may elect a payment schedule applicable to his/her
          Account provided such election is filed with the Administrator:

          (1)  Prior to the Participant's Retirement Date; and

          (2)  In the year prior to the year the first payment is to be made
               and, in all cases, at least six months/ten days prior to the time
               the first payment is to be made.

     (b)  Participants may elect:

          (1)  One lump-sum payment; or

          (2)  Quarterly, semiannual or annual installments - to be made over a
               period of up to a maximum of ten years.

     (c)  A Participant may delay the first payment; provided, however, that, in
          all cases, payments must be completed no later than the month
          preceding the month in which the Participant's 75th birthday occurs.

     (d)  The payment schedule elected by the Participant shall apply to his/her
          entire Account.

          Annual installments shall be each year on the first of the month
          selected by the Participant as the month for such payments to
          commence.

          Semiannual installments shall be paid twice each year with the first
          yearly payment paid the first of the month selected by the
          Participant as the month for such payments to commence, and the
          second yearly payment paid the first of the month which is six month
          later.

          Quarterly installments shall be paid four times each year with the
          first yearly payment paid the first of the month selected by the
          Participant as the month for such payments to commence, and the
          second, third and fourth payments following with three month between
          each such payment.

                                 - Page 4.1 -
<PAGE>

          Each installment payment shall be calculated by dividing the
          Participant's account balance, increased by the projected rate of
          interest to be earned during the period of the payment schedule, by
          the remaining number of installments -(e.g.:  Ten annual installments
                                                 ----
          shall be paid: 1st installment = 1/10 of Account as adjusted; 2nd
          installment = 1/9; 3rd installment = 1/8, etc.).

     (e)  In the event a Participant fails to file a payment schedule election
          with the Administrator prior to his/her Retirement Date, his/her
          Account shall be paid in one lump sum in the year following the year
          of such Retirement Date and shall be paid during the first month in
          such year which is at least six months/ten days following such
          Retirement Date.

4.02 Withdrawals following Termination
     ---------------------------------

     Participants shall receive their entire Account balance, paid in a lump sum
     as soon as possible following their termination of employment.

4.03 Withdrawals in the event of Disability
     --------------------------------------

     (a)  In the event a Participant becomes disabled, he/she shall receive
          payments in accordance with the election filed with the Administrator
          at the time the deferral election was filed.

     (b)  As provided in such election, the Participant shall receive:

          (1)  One lump-sum payment; or

          (2)  Quarterly, semiannual or annual installments - to be made over a
               period of up to a maximum of ten years.

     (c)  The payment schedule elected by the Participant shall apply to his/her
          entire Account.

          Annual installments shall be each year on the first of the month
          selected by the Participant as the month for such payments to
          commence.

          Semiannual installments shall be paid twice each year with the first
          yearly payment paid the first of the month selected by the
          Participant as the month for such payments to commence, and the
          second yearly payment paid the first of the month which is six month
          later.

                                 - Page 4.2 -
<PAGE>

          Quarterly installments shall be paid four times each year with the
          first yearly payment paid the first of the month selected by the
          Participant as the month for such payments to commence, and the
          second, third and fourth payments following with three months between
          each such payment.

          Each installment payment shall be calculated by dividing the
          Participant's account balance, increased by the projected rate of
          interest to be earned during the period of the payment schedule, by
          the remaining number of installments -(e.g.:  Ten annual installments
                                                 ----
          shall be paid: 1st installment = 1/10 of Account as adjusted; 2nd
          installment = 1/9; 3rd installment = 1/8, etc.).

4.04 Withdrawals following a Participant's death
     -------------------------------------------

     (a)  Death prior to the Participant's Payment Election
          -------------------------------------------------

          In the event of a Participant's death prior to the time he/she files
          an irrevocable payment election in accordance with section 4.01 or
          4.03, the Participant's entire Account shall be paid to the
          Participant's Beneficiary as soon as possible following the
          Participant's death.

     (b)  Death on or after a Participant's Payment Election
          --------------------------------------------------

          In the event of a Participant's death on or after the time he/she
          files an irrevocable payment election in accordance with section 4.01
          or 4.03, the Participant's Beneficiary shall receive the remaining
          balance of the Participant's Account in accordance with the payment
          schedule filed by the Participant.

4.05 Withdrawals upon finding of Financial Hardship
     -----------------------------------------------

     (a)  Upon a finding that the Participant, or Beneficiary if the Participant
          is deceased, has suffered a Financial Hardship, the Administrator may,
          in his sole discretion, permit the acceleration of a withdrawal under
          the Plan in an amount reasonably necessary to alleviate such Financial
          Hardship.

     (b)  The Participant shall be required to exhaust all our sources of funds,
          other than the PPG Savings Plan, before the Administrator will
          consider an accelerated withdrawal in accordance with this section
          4.05.

                                 - Page 4.3 -
<PAGE>

4.06 Small Account Provision
     -----------------------

     (a)  Each scheduled withdrawal must equal a minimum of $5,000, or 100
          shares of PPG Stock.

     (b)  If the remaining balance in a Participant's Account is less than
          $5,000, or 100 shares of PPG Stock, the Administrator may, at his
          discretion, distribute the remainder of the Account.

                                 - Page 4.4 -
<PAGE>

                        SECTION V SPECIFIC PROVISIONS
                        -----------------------------
                             RELATED TO BENEFITS
                             -------------------

5.01 Nonassignability
     ----------------

     (a)  Except as provided in paragraph (b) below and in section 5.02, no
          person shall have any power to encumber, sell, alienate, or otherwise
          dispose of his/her interest under the Plan prior to actual payment to
          and receipt thereof by such person; nor shall the Administrator
          recognize any assignment in derogation of the foregoing.  No interest
          hereunder of any person shall be subject to attachment, execution,
          garnishment or any other legal, equitable, or other process.

     (b)  Paragraph (a) above shall not apply to the extent that a Participant's
          interest under the Plan is alienated pursuant to a "Qualified Domestic
          Relations Order" ("QDRO") as defined in (S)414(p) of the Code.

          (1)  The administrator is authorized to adopt such procedural and
               substantive rules and to take such procedural and substantive
               actions as the Administrator may deem necessary or advisable to
               provide for the payment of amounts from the Plan to an Alternate
               Payee as provided in a QDRO.  Such rules and actions shall be
               consistent with the principal purposes of the Plan.

          (2)  Under no circumstances may the Administrator accept an order as a
               QDRO following a Participant's death.

          (3)  An Alternate Payee may not establish an account in the Plan.  All
               amounts taken from a Participant's Account, as provided in a
               QDRO, must be distributed as soon as possible following the
               acceptance of an order as a QDRO.

          (4)  In the sole discretion of the Administrator, a Participant's
               scheduled withdrawal or otherwise requested withdrawal may be
               delayed for a period, not to exceed six months, if the
               Administrator has notice that part or all of the Participant's
               Account may be subject to alienation pursuant to a QDRO.

                                 - Page 5.1 -
<PAGE>

5.02 Beneficiary Designation
     -----------------------

     (a)  The Participant shall have the right, at any time, to designate any
          person(s) as Beneficiary.  The designation of a Beneficiary shall be
          effective on the date it is received by the Administrator, provided
          the Participant is alive on such date.

     (b)  Each time a Participant submits a new Beneficiary designation form to
          the Administrator, such designation shall cancel all prior
          designations.

     (c)  In the case of a Participant who does not have a valid Beneficiary
          designation on file at the time of his/her death, or in the case the
          designated Beneficiary predeceases the Participant, the entire balance
          in the Participant's Capital Enhancement Account shall be paid as soon
          as possible to the Participant's estate.

5.03 Limited Right to Assets of the Corporation
     ------------------------------------------

     The Benefits paid under the Plan shall be paid from the general funds of
     the Company, and the Participants and any Beneficiary shall be no more than
     unsecured general creditors of the Company with no special or prior right
     to any assets of the Company for payment of any obligations hereunder.

5.04 Protective Provisions
     ---------------------

     The Participant or Beneficiary shall cooperate with the Administrator by
     furnishing any and all information requested by the Administrator in order
     to facilitate the payment of benefits hereunder.  If a Participant refuses
     to cooperate, he/she may be deemed ineligible to receive a distribution
     and/or ineligible to continue to actively participate in the Plan.

5.05 Restricted Shares of PPG Stock
     ------------------------------

     (a)  The Committee may, on such terms as it deems appropriate, restrict the
          transferability of all or any number of such shares as constitute all
          or any part of an Award to installments over periods not exceeding
          five years and/or provide for the forfeitability of all or any number
          of such shares over a period not exceeding five years.  During the
          period of restriction as to transferability and/or provision as to
          forfeitability, Participants shall receive dividends and have voting
          and other shareholders' rights as to such shares.

                                 - Page 5.2 -
<PAGE>

     (b)  No restriction on the transferability and/or provisions as to the
          forfeitability of any shares of PPG Stock may be imposed so as to
          obtain beyond the normal retirement date of the Participant awarded
          such shares.  Further, all restrictions on the transferability and/or
          provisions as to the forfeitability of any shares of PPG Stock shall
          be such as to terminate in the event of death, total and permanent
          disability or early retirement, upon the occurrence of a Change in
          Control, or upon the occurrence of the commencement of a tender offer
          or an exchange offer.

     (c)  Any restrictions on the transferability and/or provisions as to the
          forfeitability of any shares of PPG Stock shall be reflected in a
          legend imprinted on the certificate(s) representing such shares.

5.06 The shares of PPG Stock delivered under the Plan may be either authorized
     but unissued shares or issued shares acquired by the Company and held in
     its Treasury.

5.07 Withholding
     -----------

     The Participant or Beneficiary shall make appropriate arrangements with the
     Administrator for satisfaction of any federal, state or local income tax
     withholding requirements and Social Security or other employee tax
     requirements applicable to the payment of benefits under the Plan.  If no
     other arrangements are made, the Administrator may provide for such
     withholding and tax payments by any means he deems appropriate, in his sole
     discretion.

5.08 Forfeiture Provision
     --------------------

     In the event the Company becomes aware that a Participant is engaged or
     employed as a business owner, employee, or consultant in any activity which
     is in competition with any line of business of the Corporation, or has
     engaged in any activity otherwise determined to be detrimental to the
     Company, the Administrative Subcommittee may:

     (a)  Terminate such Participant's participation in the Plan, and distribute
          the entire amount in the Participant's Account in a lump sum;

     (b)  Recalculate all earnings in the Account as though all investments had
          been accruing interest at the Minimum Rate for the total period such
          amounts were credited in the Account;

     (c)  Apply both (a) and (b) above; or

                                 - Page 5.3 -
<PAGE>

     (d)  Apply any other diminution or forfeiture of benefits. which is
          specifically approved by the Administrative Subcommittee.

     For purposes of this Section 5.08, the Administrative Subcommittee shall
     consist of the Senior Vice President, Human Resources and Administration,
     the Director, Compensation and Benefits, and a representative of the Law
     Department, as appointed by the General Counsel of PPG.  The Administrative
     Subcommittee shall report all of its activities to the Committee.

                                 - Page 5.4 -
<PAGE>

                      SECTION VI ADMINISTRATION & CLAIMS
                      ----------------------------------

6.01 Administration
     --------------

     (a)  The Committee, for purposes of administering the Plan, shall meet and
          act as necessary to determine or approve the maximum amount of Awards
          to all Participants, the form of Awards to Participants and the amount
          of Awards to Insiders and such other Participants as the Committee
          deems appropriate.

     (b)  The Administrator shall administer the Plan and interpret, construe
          and apply its provisions in accordance with its terms.  The
          Administrator shall have the complete authority to:

          (1)  Determine eligibility for benefits;

          (2)  Construe the terms of the Plan; and

          (3)  Control and manage the operation of the Plan.

     (c)  The Administrator shall have the authority to establish rules for the
          administration and interpretation of the Plan and the transaction of
          its business.  The determination of the Administrator as to any
          disputed question shall be conclusive.  All actions, decisions and
          interpretations of the Administrator shall be performed in a uniform
          and nondiscriminatory manner.

     (d)  The Administrator may employ counsel and other agents and may procure
          such clerical, accounting and other services as the Administrator may
          require in carrying out the provisions of the Plan.

     (e)  The Administrator shall not receive any compensation from the Plan for
          his services.

     (f)  The Corporation shall indemnify and save harmless the Administrator
          against all expenses and liabilities arising out of the
          Administrator's service as such, excepting only expenses and
          liabilities arising from the Administrator's own gross negligence or
          willful misconduct, as determined by the Committee.

                                 - Page 6.1 -
<PAGE>

6.02 Claims
     ------

     (a)  Every person receiving or claiming benefits under the Plan shall be
          conclusively presumed to be mentally and physically competent and of
          age.  If the Administrator determines that such person is mentally or
          physically incompetent or is a minor, payment shall be made to the
          legally appointed guardian, conservator, or other person who has been
          appointed by a court of competent jurisdiction to care for the estate
          of such person, provided that proper proof of such appointment is
          furnished in a form and manner suitable to the Administrator.  Any
          payment made under the provisions of the paragraph (a) shall be a
          complete discharge of any liability therefor under the Plan.  The
          Administrator shall not be required to see to the proper application
          of any such payment.

     (b)  Claims Procedure
          ----------------

          Claims for benefits by a Participant or Beneficiary shall be filed, in
          writing, with the Administrator.  If the Administrator denies the
          claim, in whole or in part, the Administrator shall furnish a written
          notice to the claimant setting forth a statement of the specific
          reasons for the denial of the claim, references to the specific
          provisions of the Plan on which the denial is based, a description of
          any additional material or information necessary to perfect the claim
          and an explanation of why such material or information is necessary,
          and an explanation of the review procedure.  Such notice shall be
          written in a way calculated to be understandable by the claimant.

          The written notice from the Administrator shall be furnished to the
          claimant within ninety (90) days following the date on which the claim
          was filed, except that if special circumstances require an extension
          of time, the Administrator shall notify the claimant of this need
          within such 90-day period.  Such notice shall inform the claimant the
          nature of the circumstances necessitating the need for additional time
          and the date by which the claimant will be furnished with the decision
          regarding the claim.  Such extension may provide for up to an
          additional 90 days.

                                 - Page 6.2 -
<PAGE>

     (c)  Review Procedure
          ----------------

          Within sixty (60) days of the date the Administrator denies a claim,
          in whole or in part, the claimant, or his/her authorized
          representative, may request that the decision be reviewed.  Such
          request shall be in writing, shall be filed with the Administrator,
          and shall contain the following information:

          (1)  The date on which the denial was received by the claimant;

          (2)  The date on which the claimant's request for review was filed
               with the Administrator;

          (3)  The specific portions of the denial which the claimant requests
               the Administrator to review;

          (4)  A statement setting forth the basis on which the claimant
               believes that a review of the decision is required;

          (5)  Any written material which the claimant desires the Administrator
               to take into consideration in reviewing the claim.

          The Administrator shall afford the claimant, or his/her authorized
          representative, an opportunity to review documents pertinent to the
          claim, and shall conduct a full and fair review of the claim and its
          denial.  The Administrator's decision on such review shall be
          furnished to the claimant in writing, and shall be written in a manner
          calculated to be understandable to the claimant.  Such decision shall
          include a statement of the specific reason(s) for the decision,
          including references to the specific provision(s) of the Plan relied
          upon.

          The written notice from the Administrator shall be furnished to the
          claimant within sixty (60) days following the date on which the
          request for review was received by the Administrator, except that if
          special circumstances require an extension of time, the Administrator
          shall notify the claimant of this need within such 60-day period.
          Such notice shall inform the claimant the nature of the circumstances
          necessitating the need for additional time and the date by which the
          claimant will be furnished with the decision regarding the claim.
          Such extension may provide for up to an additional 60 days.

                                 - Page 6.3 -
<PAGE>

                    SECTION VII AMENDMENT AND TERMINATION
                    -------------------------------------

7.01 Amendment of the Plan
     ---------------------

     (a)  Except as provided in paragraph (b) below, the Board or the Committee
          may amend the Plan, in whole or in part, at any time.

     (b)  The Plan shall not be amended, without shareholder approval, so as to
          increase the percentage of Pre-tax Earnings to be set aside in the
          Reserve each year or extend the period of time after which unawarded
          amounts are automatically released from the Reserve and returned to
          income.

7.02 Termination of the Plan
     -----------------------

     The Board or the Committee may terminate the Plan at any time.   Upon a
     termination pursuant to this Section 7.02, the Committee has the sole
     discretion to determine distribution schedules for any or all Accounts,
     notwithstanding a Participant's previous distribution schedule.

7.03 Company Action.
     ---------------

     The Company's power to amend or terminate the Plan shall be exercisable by
     the Board or by the Committee, or by any individual authorized by the Board
     to exercise such powers.

7.04 Constructive Receipt
     --------------------

     In the event the Administrator determines that amounts deferred under the
     Plan have been constructively received by Participants and must be
     recognized as income for federal income tax purposes, distributions shall
     be made to Participants, as determined by the Administrator.  The
     determination of the Administrator under this section 7.04 shall be binding
     and conclusive.

                                 - Page 7.1 -
<PAGE>

                          SECTION VIII MISCELLANEOUS
                          --------------------------

8.01 Successors of the Company
     -------------------------

     The rights and obligations of the Company under the Plan shall inure to the
     benefit of, and shall be binding upon, the successors and assigns of the
     Company.

8.02 ERISA Plan
     ----------

     The Plan is intended to be an unfunded plan maintained primarily to provide
     deferred compensation benefits for "a select group of management or highly
     compensated employees" within the meaning of Sections 201, 301 and 401 of
     ERISA and therefore to be exempt from Parts 2, 3 and 4 of Title I of ERISA.

8.03 Trust
     -----

     The Company shall be responsible for the payment of all benefits under the
     Plan.  At its discretion, the Company may establish one or more grantor
     trusts for the purpose of providing for payment of benefits under the Plan.
     Such trust(s) may be irrevocable, but the assets thereof shall be subject
     to the claims of the Company's creditors.  Benefits paid to the Participant
     from any such trust shall be considered paid by the Company for purposes of
     meeting the obligations of the Company under the Plan.

8.04 Employment Not Guaranteed
     -------------------------

     Nothing contained in the Plan nor any action taken hereunder shall be
     construed as a contract of employment or as giving any Participant any
     right to continued employment with the Corporation.

8.05 Gender, Singular and Plural
     ---------------------------

     All pronouns and variations thereof shall be deemed to refer to the
     masculine, feminine, or neuter, as the identity of the person(s) requires.
     As the context may require, the singular may be read as the plural and the
     plural as the singular.

8.06 Headings
     --------

     The headings of the Sections, subsections and paragraphs of the Plan are
     for convenience only and shall not control or affect the meaning or
     construction of any of its provisions.

                                 - Page 8.1 -
<PAGE>

8.07 Validity
     --------

     If any provision of the Plan is held invalid, void or unenforceable, the
     same shall not affect, in any respect, the validity of any other
     provision(s) of the Plan.

8.08 Waiver of Breach
     ----------------

     The waiver by the Company of any breach of any provision of the Plan by a
     Participant or Beneficiary shall not operate or be construed as a waiver of
     any subsequent breach.

8.09 Applicable Law
     --------------

     The Plan is intended to conform and be governed by ERISA.  In any case
     where ERISA does not apply, the Plan shall be governed and construed in
     accordance with the laws of the Commonwealth of Pennsylvania.

8.10 Notice
     ------

     Any notice required or permitted to be given to the Administrator under the
     Plan shall be sufficient if in writing and either hand-delivered, or sent
     by first class mail to the principal office of the Company at One PPG
     Place, Pittsburgh, PA 15272, directed to the attention of the
     Administrator.  Such notice shall be deemed given as of the date of
     delivery.

                                 - Page 8.2 -
<PAGE>

                         SECTION IX CHANGE IN CONTROL
                         ----------------------------

9.01 Change in Control
     -----------------

     (a)  Upon, or in reasonable anticipation of, a Change in Control (as
          defined in section 9.02):

          (1)  Awards in the form of cash shall be made for the year during
               which the Change in Control occurs, and then paid immediately to
               a trustee on such terms as the Senior Vice President, Human
               Resources and Administration and the Senior Vice President,
               Finance, or either of them, or their successors, shall deem
               appropriate (including such terms as are appropriate to cause
               such payment, if possible, not to be a taxable event to
               Participants) in order to cause the Awards so paid to be paid
               either not later than the end of the first calendar quarter
               following the end of the year to which the Awards relate or on a
               deferred basis in accordance with the elections of Participants
               then in effect as to the timing of the receipt of Awards for such
               year.

          (2)  Participants who are eligible to receive an Award for the Plan
               Year in which a Change in Control occurs shall be eligible to
               receive an Award for the Plan Year following the Change in
               Control.

          (3)  The amount of the Award payable to each Participant shall be:

               one-half of the regular Award if the Change in Control occurs
               during the first six months of the year; or

               the full regular Award, if the Change in Control occurs during
               the second six months of the year

               either calculated at a rating of 12 for all performance
               categories.

          (4)  All deferred amounts credited to the Capital Enhancement Account
               shall be paid immediately to a trustee on such terms as the
               Senior Vice President, Human Resources and Administration and the
               Senior Vice President, Finance, or either of them, or their
               successors shall deem appropriate (including such terms as are
               appropriate to cause such payment, if possible, not to be a
               taxable event to Participants) in order to give effect to the
               elections of Participants with respect to the timing of the
               receipt of such deferred amounts.

                                 - Page 9.1 -
<PAGE>

     (b)  By way of example of the operation of paragraph (a) above:

          If the Change in Control occurred on August 1 of a Plan Year, a
          Participant in a position with 1000 total points and an incentive
          award value of $1.75 per point would receive an Award of no less than
          $21,000 calculated as follows:  1000 x 1.75 x 12 = $21,000.

          If the Change in Control occurred on April 1 of a Plan Year, such
          Participant would receive $10,500.

          If the Plan were to be continued to the end of the year, and
          performance exceeded the 12 rating, a higher Award would be paid.

     (c)  Notwithstanding any other provision of this section, if an Award
          ultimately made for such Plan Year is greater than the Award made
          pursuant to this section, the Participant shall be entitled to the
          difference between such Awards.

          If the Participant has elected his/her Award to be deferred, payment
          of such difference shall be made to a trustee in accordance with the
          provisions set forth in subparagraph (a)(4) above.

     (d)  For purposes of this section, the fair market value of a share of PPG
          Stock on any date shall be the closing sale price as reported for such
          date (or, if no price is reported for such date, for the next
          preceding date for which a price is reported) on the New York Stock
          Exchange-Composite Tape.

9.02 Definition:  Change in Control
     ------------------------------

     A "Change in Control" shall mean:

     (a)  The acquisition by any individual, entity or group (within the meaning
          of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act of
          1934, as amended (the "Exchange Act")) (a "Person") of beneficial
          ownership (within the meaning of Rule 13d-3 promulgated under the
          Exchange Act) of 20% or more of either (i) the then outstanding shares
          of common stock of the Company (the "Outstanding Company Common
          Stock") or (ii) the combined voting power of the then outstanding
          voting securities of the Company entitled to vote generally in the
          election of directors (the "Outstanding Company Voting Securities").

                                 - Page 9.2 -
<PAGE>

          For purposes of this subsection (a) the following acquisitions shall
          not constitute a Change in Control:

          Any acquisition directly from the Company;

          Any acquisition by the Company;

          Any acquisition by any employee benefit plan (or related trust)
          sponsored or maintained by the Company or any corporation controlled
          by the Company; or

          Any acquisition by any corporation pursuant to a transaction which
          complies with clauses (i), (ii) and (iii) of paragraph (c) of this
          section 9.02.

     (b)  Individuals who, as of September 20, 1995, constitute the Board (the
          "Incumbent Board") cease for any reason to constitute at least a
          majority of the Board; provided, however, that any individual becoming
          a director subsequent to such date whose election, or nomination for
          election by the Company's shareholders, was approved by a vote of at
          least a majority of the directors then comprising the Incumbent Board
          shall be considered as though such individual were a member of the
          Incumbent Board, but excluding, for this purpose, any such individual
          whose initial assumption of office occurs as a result of an actual or
          threatened election contest with respect to the election or removal of
          directors or other actual or threatened solicitation of proxies or
          consents by or on behalf of a Person other than the Board; or

     (c)  Approval by the shareholders of the Company of a reorganization,
          merger or consolidation or sale or other disposition of all or
          substantially all of the assets of the Company (a "Business
          Combination"), in each case, unless, following such Business
          Combination:

          (i)  All or substantially all of the individuals and entities who were
               the beneficial owners, respectively, of the Outstanding Company
               Common Stock and Outstanding Company Voting Securities
               immediately prior to such Business Combination beneficially own,
               directly or indirectly, more than 60% of, respectively, the then
               outstanding shares of common stock and the combined voting power
               of the then outstanding voting securities entitled to vote
               generally in the election of directors, as the case may be, of
               the corporation resulting from such Business Combination
               (including, without limitation, a corporation which as a result
               of such transaction owns the Company or all or substantially all
               of the Company's assets either directly or through one or more

                                 - Page 9.3 -
<PAGE>

                subsidiaries) in substantially the same proportions as their
                ownership, immediately prior to such Business Combination of the
                Outstanding Company Common Stock and Outstanding Company Voting
                Securities, as the case may be;

          (ii)  No Person (excluding any employee benefit plan (or related
                trust) of the Company or such corporation resulting from such
                Business Combination) beneficially owns, directly or
                indirectly, 20% or more of, respectively, the then outstanding
                shares of common stock of the corporation resulting from such
                Business Combination or the combined voting power of the then
                outstanding voting securities of such corporation except to the
                extent that such ownership existed prior to the Business
                Combination; and

          (iii) At least a majority of the members of the board of directors
                of the corporation resulting from such Business Combination were
                members of the Incumbent Board at the time of the execution of
                the initial agreement, or of the action of the Board, providing
                for such Business Combination; or

     (d)  Approval by the shareholders of the Company of a complete liquidation
          or dissolution of the Company; or

     (e)  A majority of the Board otherwise determines that a Change in Control
          shall have occurred.

                                 - Page 9.4 -

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