OHM CORP
DEF 14A, 1996-03-29
HAZARDOUS WASTE MANAGEMENT
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<PAGE>   1
 
                                  SCHEDULE 14A
                                 (RULE 14A-101)
 
                    INFORMATION REQUIRED IN PROXY STATEMENT
 
                            SCHEDULE 14A INFORMATION
 
          PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES
                              EXCHANGE ACT OF 1934
 
Filed by the Registrant /X/
 
Filed by a Party other than the Registrant / /
 
Check the appropriate box:
 
/ /  Preliminary proxy statement
/X/  Definitive proxy statement
/ /  Definitive additional materials
/ /  Soliciting material pursuant to Rule 14a-11(c) or Rule 14a-12
 
                                OHM CORPORATION
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)
 
- --------------------------------------------------------------------------------
                   (Name of Person(s) Filing Proxy Statement)
 
Payment of Filing Fee (Check the appropriate box):
 
/X/  $125 per Exchange Act Rules 0-11(c)(1)(ii), or 14a-6(i)(1), or 14a-6(i)(2).
 
/ /  $500 per each party to the controversy pursuant to Exchange Act Rule
     14a-6(i)(3).
 
/ /  Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.
 
     (1)  Title of each class of securities to which transaction applies:
 
     (2)  Aggregate number of securities to which transaction applies:
 
     (3)  Per unit price or other underlying value of transaction computed
          pursuant to Exchange Act Rule 0-11:1
 
     (4)  Proposed maximum aggregate value of transaction:
 
/ /  Check box if any part of the fee is offset as provided by Exchange Act Rule
     0-11(a)(2) and identify the filing for which the offsetting fee was paid
     previously. Identify the previous filing by registration statement number,
     or the Form or Schedule and the date of its filing.
 
     (1)  Amount previously paid:
 
     (2)  Form, schedule or registration statement no.:
 
     (3)  Filing party:
 
     (4)  Date Filed:
 
- ---------------
1 Set forth the amount on which the filing fee is calculated and state how it
  was determined.
<PAGE>   2
                                    [LOGO]

                               OHM CORPORATION

                           16406 U.S. ROUTE 224 EAST
                              FINDLAY, OHIO 45840
                               ------------------
 
                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
                             TO BE HELD MAY 9, 1996
                               ------------------
 
To the Shareholders of
OHM Corporation:
 
     The Annual Meeting of Shareholders of OHM Corporation (the "Company") will
be held at the Elks Lodge located at 601 South Main Street, Findlay, Ohio 45840
on Thursday, May 9, 1996, at 10:00 a.m. local time for the following purposes:
 
     1. To elect nine Directors to serve for the ensuing year;
 
     2. To consider and act upon a proposal to amend the Company's 1986 Stock
        Option Plan to increase the aggregate number of shares of Common Stock,
        $0.10 par value, which may be sold upon exercise of stock options
        granted under the Plan from 2,850,000 to 3,850,000; and
 
     3. To transact such other business as may properly come before the meeting
        or any adjournment thereof.
 
     Only shareholders of record at the close of business on March 19, 1996,
will be entitled to vote at the meeting and any adjournment thereof. A list of
such shareholders will be available at the time and place of the meeting and,
during the ten days prior to the meeting, at the Company's principal office.
 
                                            By Order of the Board of Directors
 
                                            John J. Ray III
                                            Vice President and Secretary
 
Findlay, Ohio
March 29, 1996
 
       YOU ARE URGED TO MARK, DATE AND SIGN THE ENCLOSED PROXY AND RETURN
          IT IN THE ENCLOSED PREPAID ENVELOPE AS PROMPTLY AS POSSIBLE.
<PAGE>   3
                                    [LOGO]

                               OHM CORPORATION

                           16406 U.S. ROUTE 224 EAST
                              FINDLAY, OHIO 45840
                               ------------------
 
          PROXY STATEMENT FOR THE 1996 ANNUAL MEETING OF SHAREHOLDERS
                             TO BE HELD MAY 9, 1996
                               ------------------
 
     OHM Corporation (the "Company") is mailing this Proxy Statement to the
shareholders of the Company in connection with the solicitation of proxies by
the Company's Board of Directors. These proxies will be used at the Annual
Meeting of Shareholders to be held at 10:00 a.m. on Thursday, May 9, 1996, at
the Elks Lodge, 601 South Main Street, Findlay, Ohio 45840 and at any
adjournment thereof (the "Annual Meeting").
 
     If a shareholder properly executes and returns the enclosed form of proxy,
it will be voted according to his or her instructions. If no instructions are
given, it will be voted (i) for the election as Directors of the nine nominees
named below, (ii) for the proposal to amend the Company's 1986 Stock Option Plan
to increase the aggregate number of shares of Common Stock, $0.10 par value
("Common Stock") which may be sold upon exercise of stock options granted under
the Plan from 2,850,000 to 3,850,000, and (iii) in the discretion of the proxies
with respect to any other matter that may come before the meeting. In accordance
with The Ohio General Corporation Law and the Company's Amended and Restated
Articles of Incorporation and Regulations, the Company may, if necessary,
convene and, by a vote of shareholders, adjourn the Annual Meeting to a later
date, without changing the Record Date. If the Company were to determine that an
adjournment were desirable, the appointed proxies would use the discretionary
authority granted pursuant to the proxy card to vote in favor of such an
adjournment. Any proxy may be revoked by a later appointment received by the
Company or by giving notice of revocation to the Company in writing or in open
meeting before the proxy is exercised. No appraisal rights exist for any action
proposed to be taken at the Annual Meeting.
 
     The Company will pay the expenses of soliciting proxies, including the
charges and expenses of brokers, nominees, fiduciaries and custodians incurred
in sending proxy materials to principals and obtaining their instructions. In
addition to the use of the mail, proxies may be solicited in person or by
telephone or telegraph. Directors, officers and regular employees of the Company
may solicit proxies without additional compensation.
 
     This Proxy Statement and the accompanying form of proxy are being mailed to
shareholders on or about March 29, 1996.
 
                              RECORD DATE; VOTING
 
     The Board of Directors has fixed the close of business on March 19, 1996 as
the record date (the "Record Date") for determining shareholders entitled to
notice of and to vote at the Annual Meeting. On the Record Date, there were
outstanding 26,718,097 shares of the Company's Common Stock, all of one class
and all of which are entitled to be voted at the Annual Meeting. Holders of
issued and outstanding shares of Common Stock are entitled to one vote for each
share held.
 
     The presence at the Annual Meeting, in person or by proxy, of the holders
of a majority of the issued and outstanding shares of Common Stock entitled to
vote will constitute a quorum for the transaction of business. In all matters
other than the election of Directors, the affirmative vote of the holders of a
majority of the issued and outstanding shares of Common Stock present and
actually voting at the Annual Meeting in person
<PAGE>   4
 
or by proxy is required to approve each proposal to be considered at the Annual
Meeting. Directors will be elected by a plurality of the votes of the shares
present in person or by proxy at the Annual Meeting and entitled to vote on the
election of Directors.
 
     At the Annual Meeting, the results of shareholder voting will be tabulated
by the inspector of election appointed for the Annual Meeting. Properly executed
proxies either marked "abstain" or held in "street name" by brokers that are not
voted on one or more particular proposals (if otherwise voted on at least one
proposal) will be counted for purposes of determining whether a quorum has been
achieved at the Annual Meeting but will not be treated as either a vote for or a
vote against any of the proposals to which such abstention or broker non-vote
applies.
 
                       PROPOSAL 1:  ELECTION OF DIRECTORS
 
INFORMATION CONCERNING THE NOMINEES
 
     Nine Directors will be elected at the Annual Meeting. Each Director elected
at the Annual Meeting will hold office until the next Annual Meeting of
Shareholders and until his successor is duly elected and qualified, or until his
earlier death, resignation or removal from office. The Company's management
intends that the shares represented by the enclosed proxy will be voted, unless
the shareholder executing the proxy otherwise instructs, for the election to the
Board of Directors of each of the nine nominees named below.
 
     The Company has no reason to believe that any of such nominees will be
unable, if elected, to serve as a Director. However, if such an event should
occur, the Company's management intends that the shares represented by the
enclosed proxy will be voted for the remainder of the nominees, and for such
substitute nominee or nominees as may be selected by the Company's current Board
of Directors.
 
     All of the nominees for Director named below are currently serving as
Directors of the Company for terms expiring at the Annual Meeting. Mr. Ivan W.
Gorr and Dr. Charles D. Hollister became Directors of the Company on November
15, 1990 and July 2, 1992, respectively. Messrs. James L. Kirk, Joseph R. Kirk,
Richard W. Pogue and Charles W. Schmidt became Directors of the Company
effective July 1, 1986. Messrs. Herbert A. Getz and James E. Koenig became
Directors on June 1, 1995. Mr. Victor J. Barnhart became a Director on February
23, 1996. In accordance with the terms of the Standstill and Non-Competition
Agreement, Messrs. Barnhart, Getz and Koenig are the three designees of Rust
International Inc. ("Rust"). See "Certain Relationships and Related Transactions
- -- Transactions with Shareholders -- The Standstill and Non-Competition
Agreement."
 
<TABLE>
<CAPTION>
                                               POSITIONS AND OTHER RELATIONSHIPS
         NAME            AGE               WITH THE COMPANY AND BUSINESS EXPERIENCE
- -----------------------  ---     -------------------------------------------------------------
<S>                      <C>     <C>
Victor J. Barnhart       53      Director and member of the Executive Committee. Mr. Barnhart
                                 is President of Integrated Environmental Services, a division
                                 of WMX Technologies, Inc. ("WMX"), a provider of
                                 environmental services, since December 1995. Mr. Barnhart
                                 served as President of Rust Remedial Services Inc., a
                                 provider of environmental remediation services ("Rust
                                 Remedial"), from May 1994 until May 1995 and President of
                                 Rust Industrial Services Inc., a provider of on-site
                                 industrial and related services, from May 1993 until December
                                 1995. Mr. Barnhart also served as President and Chief
                                 Executive Officer of The Brand Companies, Inc., a provider of
                                 asbestos abatement services, prior to May 1993.
Herbert A. Getz          40      Director and member of the Compensation and Stock Option
                                 Committee. Mr. Getz has been Senior Vice President of WMX
                                 since May 1995 and General Counsel of WMX since August 1992.
                                 Mr. Getz also served as Vice President from May 1990 to May
                                 1995 and as Secretary of WMX since January 1988. Mr. Getz
                                 served as Assistant General Counsel from December 1985 until
                                 August 1992. Mr. Getz has also held the offices of Vice
                                 President, General Counsel and Secretary of Waste
</TABLE>
 
                                        2
<PAGE>   5
 
<TABLE>
<CAPTION>
                                               POSITIONS AND OTHER RELATIONSHIPS
         NAME            AGE               WITH THE COMPANY AND BUSINESS EXPERIENCE
- -----------------------  ---     -------------------------------------------------------------
<S>                      <C>     <C>
                                 Management, Inc., a provider of solid waste management
                                 services, from April 1989 until December 1993, and Vice
                                 President and Secretary of Rust, a provider of engineering,
                                 construction, environmental, infrastructure, consulting
                                 services and other on-site industrial and related services,
                                 from January 1993 to May 1994. He has also served as Vice
                                 President and Secretary of Wheelabrator Technologies Inc.
                                 ("WTI") a provider of environmental products and services,
                                 since July 1995, positions he previously held, as well as
                                 being the General Counsel of WTI from November 1990 until May
                                 1993. Mr. Getz is a director of NSC Corporation.
Ivan W. Gorr             66      Director and Chairman of the Audit Committee and member of
                                 the Compensation and Stock Option and Executive Committees.
                                 Mr. Gorr retired as Chairman of the Board of Directors and
                                 Chief Executive Officer of Cooper Tire & Rubber Company of
                                 Findlay, Ohio, a manufacturer of tires and other rubber
                                 products. Mr. Gorr is a director of Cooper Tire & Rubber
                                 Company, Amcast Industrial Corporation, Arvin Industries,
                                 Inc., The Fifth Third Bancorp and Borg-Warner Automotive.
Dr. Charles D.           59      Director and member of the Audit and Executive Committees.
  Hollister                      Since 1979, Dr. Hollister has been Senior Scientist and Vice
                                 President of Woods Hole Oceanographic Institution, Woods
                                 Hole, Massachusetts, a non-profit oceanographic research
                                 institution.
James L. Kirk (1)        46      Chairman of the Board of Directors, President and Chief
                                 Executive Officer and Chairman of the Executive Committee.
                                 Mr. Kirk has been President and Chief Executive Officer of
                                 the Company since July 1986 and, in addition, was elected
                                 Chairman of the Board in January 1987. He has served as
                                 Chairman of the Board and Chief Executive Officer of OHM
                                 Remediation Services Corp., a wholly-owned subsidiary of the
                                 Company ("OHMR"), since April 1985. Mr. Kirk is a founder of
                                 OHMR and has served in various capacities as an officer and
                                 director of OHMR.
Joseph R. Kirk (1)       44      Executive Vice President and Director. Mr. Kirk served as
                                 Vice Chairman of OHMR from April 1985 until July 1986 and
                                 continues to serve as Executive Vice President of OHMR. He is
                                 a founder of OHMR and has served in various capacities as an
                                 officer and director of OHMR.
James E. Koenig          48      Director and member of the Audit Committee. Mr. Koenig has
                                 been Senior Vice President of WMX since May 1992, Chief
                                 Financial Officer of WMX since 1989 and Vice President and
                                 Treasurer of WMX since December 1986. Mr. Koenig served as
                                 Vice President, Chief Financial Officer and Treasurer of WTI
                                 from November 1990 to May 1993 and Vice President, Chief
                                 Financial Officer and Treasurer of Rust from January 1993 to
                                 August 1993. Mr. Koenig is a Director of Rust, WTI and Waste
                                 Management International, plc.
Richard W. Pogue         67      Director and member of the Executive Committee. Mr. Pogue is
                                 Senior Advisor to Dix & Eaton, a public relations firm.
                                 Effective June 30, 1994, Mr. Pogue retired as Senior Partner
                                 of the law firm of Jones, Day, Reavis & Pogue, Cleveland,
                                 Ohio, of which he had been a partner since 1961. Mr. Pogue is
                                 also a director of Continental Airlines, Inc., Derlan
                                 Industries Limited, M.A. Hanna Company, KeyCorp, Redland PLC,
                                 Rotek Incorporated and TRW Inc.
</TABLE>
 
                                        3
<PAGE>   6
 
<TABLE>
<CAPTION>
                                               POSITIONS AND OTHER RELATIONSHIPS
         NAME            AGE               WITH THE COMPANY AND BUSINESS EXPERIENCE
- -----------------------  ---     -------------------------------------------------------------
<S>                      <C>     <C>
Charles W. Schmidt       67      Director and Chairman of the Compensation and Stock Option
                                 Committee and member of the Executive Committee. Mr. Schmidt
                                 retired as Senior Vice President, External Affairs of
                                 Raytheon Company, a broadly diversified manufacturer of
                                 industrial and consumer products, and was formerly President
                                 and Chief Executive Officer of SCA Services, Inc., a company
                                 that provided waste management-related services. Mr. Schmidt
                                 also serves as a director of The Boston Company, Boston Safe
                                 Deposit and Trust Company, the Massachusetts Financial
                                 Services Family of Mutual Funds and Mohawk Paper Company.
</TABLE>
 
- ---------------
 
(1) James L. Kirk and Joseph R. Kirk are brothers.
 
COMMITTEES OF THE BOARD OF DIRECTORS AND MEETINGS HELD
 
     During 1995, the Board of Directors of the Company held a total of seven
meetings.
 
     The Executive Committee of the Board of Directors presently consists of
Messrs. Barnhart, Gorr, James Kirk, Pogue and Schmidt and did not meet during
1995. The function of the Executive Committee is to exercise, when the full
Board is not in session, the powers of the Board in the management of the
business and affairs of the Company.
 
     The Compensation and Stock Option Committee of the Board of Directors met
five times during 1995. Messrs. Getz, Gorr and Schmidt are presently members of
the Compensation and Stock Option Committee, the primary function of which is to
review and approve salaries and other benefits for executive officers of the
Company, to make recommendations to the Board of Directors with respect to the
adoption of employee benefit programs and to administer the Company's stock
option plans and approve awards of stock options made under the Company's 1986
Stock Option Plan.
 
     The Company has a standing Audit Committee, the primary function of which
is to oversee the accounting and auditing affairs of the Company. Messrs. Gorr,
Hollister and Koenig serve as members of the Audit Committee, which met once
during 1995.
 
     The Company has no standing nominating committee or committee performing
similar functions.
 
     In 1995, all Directors attended more than 75% of the meetings of the Board
of Directors and committees of which they were a member.
 
DIRECTORS' FEES
 
     Directors of the Company who are not employees receive $18,000 per annum.
Members of the Company's Executive Committee who are not employees receive
$1,500 per meeting, and each non-employee member of any other committee of the
Company's Board of Directors receives $500 per meeting. Rust has requested that
Messrs. Barnhart, Getz and Koenig, representatives of Rust, not be paid
directors' fees.
 
                                        4
<PAGE>   7
 
                VOTING SECURITIES AND PRINCIPAL HOLDERS THEREOF
 
     The Company's Common Stock is the Company's only outstanding class of
voting securities. The following table sets forth certain information as of
March 1, 1996 with respect to the beneficial ownership of the Company's Common
Stock by (i) holders of 5% or more of the outstanding Common Stock, (ii) each
Director of the Company, (iii) the executive officers named in the Summary
Compensation Table under "Executive Compensation and Other Information" and (iv)
by all Directors and executive officers of the Company as a group.
 
<TABLE>
<CAPTION>
                                                        AMOUNT AND NATURE         PERCENTAGE
                          NAME                      OF BENEFICIAL OWNERSHIP(1)     OF CLASS
     -------------------------------------------------------------------------    ----------
     <S>                                            <C>                           <C>
     WMX Technologies, Inc.(2)
       3003 Butterfield Road
       Oak Brook, Illinois 60521....................         10,368,000              38.81
     State of Wisconsin Investment Board (3)
       P.O. Box 7842
       Madison, Wisconsin 53707.....................          1,417,000               5.30
     H. Wayne Huizenga (4)
       200 South Andrews Avenue
       Fort Lauderdale, Florida 33301...............          1,500,000               5.41
     James L. Kirk (5)(6)(7)........................          2,042,977               7.60
     Joseph R. Kirk (5)(6)(7).......................          2,451,090               9.13
     Victor J. Barnhart (5).........................                  0              *
     Herbert A. Getz (5)(6).........................             15,000              *
     Ivan W. Gorr (5)(6)............................             34,226              *
     Dr. Charles D. Hollister (5)(6)................             30,000              *
     James E. Koenig (5)(6)(7)......................             15,150              *
     Richard W. Pogue (5)(6)(7).....................             45,000              *
     Charles W. Schmidt (5)(6)(7)...................             72,226              *
     Robert J. Blackwell (5)(6).....................             39,112              *
     Frank A. McBride (5)(6)........................            137,172              *
     Philip V. Petrocelli (5)(6)....................             63,787              *
     Michael A. Szomjassy (5)(6)....................             83,249              *
     All Directors and executive officers as a group
       (18 persons) (5)(6)..........................          4,990,143              18.20
</TABLE>
 
- ---------------
 
* less than 1%.
 
(1) Information with respect to beneficial ownership is based on information
    furnished to the Company by each shareholder included in this table. Except
    as indicated in the notes to the table, each shareholder included in the
    table has sole voting and investment power with respect to the shares shown
    to be beneficially owned. Beneficial ownership is calculated in accordance
    with the rules and regulations of the Securities and Exchange Commission
    (the "Commission").
 
(2) According to a Schedule 13D dated June 8, 1995 jointly filed by WMX,
    Chemical Waste Management, Inc., Rust Holding Company Inc., and Rust.
    Assumes the exercise of warrants currently exercisable to purchase 700,000
    shares of Common Stock pursuant to that certain Warrant Agreement between
    the Company and WMX described below. See "Certain Relationships and Related
    Transactions -- Transactions with Shareholders."
 
(3) According to an Amendment No. 7 to Schedule 13G filed by the State of
    Wisconsin Investment Board.
 
                                        5
<PAGE>   8
 
(4) According to a Schedule 13D, dated April 1, 1995, filed by Mr. Huizenga.
    Assumes the exercise of options currently exercisable or exercisable within
    60 days to purchase 1,000,000 shares of Common Stock, but does not include
    500,000 shares of Common Stock owned by the Huizenga Family Foundation, Inc.
    as to which Mr. Huizenga disclaims beneficial ownership.
 
(5) The address of each shareholder is c/o OHM Corporation, 16406 U.S. Route 224
    East, Findlay, Ohio 45840.
 
(6) Assumes the exercise of options currently exercisable or exercisable within
    60 days to purchase 138,000, 92,000, 15,000, 30,000, 30,000, 15,000, 30,000,
    30,000, 35,400, 137,000, 58,000, 83,000 and 648,200 shares of Common Stock
    by Messrs. James L. Kirk, Joseph R. Kirk, Getz, Gorr, Hollister, Koenig,
    Pogue, Schmidt, Blackwell, McBride, Petrocelli, Szomjassy, respectively, and
    all directors and executive officers as a group, respectively.
 
(7) Includes 15,828 shares of Common Stock held in three trusts by Mr. James L.
    Kirk's wife as trustee for the benefit of the Kirks' children, as to which
    Mr. James Kirk disclaims beneficial ownership. Includes 21,780 shares of
    Common Stock held in three trusts by Mr. Joseph R. Kirk's wife as trustee
    for the benefit of the Kirks' children, as to which Mr. Joseph R. Kirk
    disclaims beneficial ownership. Includes 150 shares of Common Stock held in
    trust for the benefit of Mr. Koenig's brother as to which he disclaims
    beneficial ownership. Includes 1,000 shares of Common Stock held in trust
    for the benefit of Mr. Pogue's wife as to which he disclaims beneficial
    ownership. Includes 10,000 shares of Common Stock held by Mr. Schmidt's wife
    as to which he disclaims beneficial ownership.
 
     James L. Kirk and Joseph R. Kirk are brothers, each of whom disclaims
beneficial interest in the shares owned by the other.
 
                                        6
<PAGE>   9
 
                  EXECUTIVE COMPENSATION AND OTHER INFORMATION
 
SUMMARY OF CASH AND CERTAIN OTHER COMPENSATION
 
     The following table shows, for the fiscal years ended December 31, 1995,
1994 and 1993, the cash compensation paid by the Company and its subsidiaries,
as well as certain other compensation paid or accrued for those years, to each
of the six most highly compensated executive officers of the Company in 1995,
including the Chief Executive Officer of the Company, in all capacities in which
they served:
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                        LONG-TERM
                                       ANNUAL COMPENSATION             COMPENSATION
                              --------------------------------------      AWARDS
                                                           OTHER          STOCK
                                                           ANNUAL        OPTIONS       ALL OTHER
                                     SALARY    BONUS    COMPENSATION     GRANTED      COMPENSATION
NAME AND PRINCIPAL POSITION   YEAR     ($)      ($)        ($)(2)          (#)           ($)(3)
- ----------------------------  ----   -------   ------   ------------   ------------   ------------
<S>                           <C>    <C>       <C>      <C>            <C>            <C>
James L. Kirk                 1995   330,013        0           0          70,000         5,347
Chairman, President           1994   330,013        0           0          50,000         6,250
and Chief Executive Officer   1993   330,013        0           0         150,000         5,051
Joseph R. Kirk                1995   300,019        0           0          50,000         5,250
Executive Vice                1994   300,019        0           0          30,000         5,934
President                     1993   300,019        0           0         100,000         5,141
Robert J. Blackwell           1995   193,768   30,000           0          25,000        29,591
Vice President,               1994   157,331        0           0          45,000         2,458
Marketing and Strategic       1993    55,873        0           0          12,000           239
Planning
Frank A. McBride (1)          1995   200,013   40,000           0          10,000         5,100
Vice President                1994   200,013        0           0          20,000         5,599
                              1993   200,013        0           0          20,000         3,890
Michael A. Szomjassy          1995   256,266        0           0          25,000         5,184
Vice President,               1994   185,108        0           0          30,000         5,558
Eastern Operations            1993   163,953        0           0          35,000         3,380
Philip V. Petrocelli          1995   232,513   50,000      50,839          25,000        19,435
Vice President,               1994   181,266   10,714      61,938          15,000         1,993
Western Operations            1993    49,280        0           0          70,000           225
</TABLE>
 
- ---------------
 
(1) Mr. McBride resigned as an officer of the Company on October 27, 1995.
 
(2) Amounts in 1995 for Mr. Petrocelli include $43,938, $4,466 and $2,435 paid
    to him for reimbursement of tax costs in connection with the relocation of
    his principal residence, imputed interest and miscellaneous perquisites,
    respectively.
 
(3) Amounts for Messrs. Blackwell and Petrocelli include $25,000 and $14,286,
    respectively, in loans forgiven by the Company. See "Certain Relationships
    and Related Transactions -- Transactions with Management". Amounts include
    Company matching contributions to the Company's Retirement Savings Plan of
    $4,852, $4,800, $4,300, $4,800, $4,800, and $4,800 and excess premiums for
    group life insurance of $495, $450, $291, $300, $384, and $349 on behalf of
    Messrs. James L. Kirk, Joseph R. Kirk, Blackwell, McBride, Szomjassy and
    Petrocelli, respectively.
 
                                        7
<PAGE>   10
 
STOCK OPTIONS
 
     The following table sets forth information with respect to grants of
options pursuant to the Company's 1986 Stock Option Plan made to the executive
officers named in the Summary Compensation Table during the 1995 fiscal year.
 
                    STOCK OPTION GRANTS IN LAST FISCAL YEAR
 
<TABLE>
<CAPTION>
                                                                                            POTENTIAL
                                                     INDIVIDUAL GRANTS                      REALIZABLE
                                    ---------------------------------------------------  VALUE AT ASSUMED
                                                   PERCENT                               ANNUAL RATES OF
                                    NUMBER OF      OF TOTAL                                STOCK PRICE
                                    SECURITIES     OPTIONS                               APPRECIATION FOR
                                    UNDERLYING    GRANTED TO                               OPTION TERM
                                     OPTIONS      EMPLOYEES     EXERCISE OR              ----------------
                                     GRANTED      IN FISCAL     BASE PRICE   EXPIRATION    5%       10%
               NAME                    (#)           YEAR         ($/SH)        DATE       ($)      ($)
- ----------------------------------- ----------  --------------  -----------  ----------  -------  -------
<S>                                 <C>         <C>             <C>          <C>         <C>      <C>
James L. Kirk......................   70,000         11.0          7.125      02/28/05   313,661  794,879
Joseph R. Kirk.....................   50,000          7.9          7.125      02/28/05   224,044  567,771
Robert J. Blackwell................   25,000          3.9          7.125      02/28/05   112,022  283,885
Frank A. McBride...................   10,000          1.6          7.125      02/28/05    44,809  113,554
Philip V. Petrocelli...............   25,000          3.9          7.125      02/28/05   112,022  283,885
Michael A. Szomjassy...............   25,000          3.9          7.125      02/28/05   112,022  283,885
</TABLE>
 
OPTION EXERCISES AND HOLDINGS
 
     The following table sets forth information with respect to the executives
named in the Summary Compensation Table concerning the exercise of options
during the last fiscal year and the value of unexercised options held as of the
end of the fiscal year.
 
                         AGGREGATED OPTION EXERCISES IN
               LAST FISCAL YEAR AND FISCAL YEAR-END OPTION VALUES
 
<TABLE>
<CAPTION>
                                        VALUE             NUMBER OF SECURITIES        VALUE OF UNEXERCISED
                      SHARES           REALIZED          UNDERLYING UNEXERCISED       IN-THE-MONEY OPTIONS
                     ACQUIRED       (MARKET PRICE        OPTIONS AT FY-END (#)           AT FY-END ($)
                    ON EXERCISE      AT EXERCISE       --------------------------  --------------------------
       NAME              #       LESS EXERCISE PRICE)  EXERCISABLE  UNEXERCISABLE  EXERCISABLE  UNEXERCISABLE
- ------------------  -----------  --------------------  -----------  -------------  -----------  -------------
<S>                 <C>          <C>                   <C>          <C>            <C>          <C>
James L. Kirk.....         --               --           124,000       146,000        3,500         14,000
Joseph R. Kirk....         --               --            82,000        98,000        2,500         10,000
Robert J.
  Blackwell.......         --               --            25,400        56,600        1,250          5,000
Frank A.
  McBride.........         --               --           128,750        36,250          500          2,000
Philip V.
  Petrocelli......         --               --            53,000        57,000        1,250          5,000
Michael A.
  Szomjassy.......         --               --            76,000        54,000        1,250          5,000
</TABLE>
 
1996 MANAGEMENT INCENTIVE PLAN
 
     The Board of Directors has adopted the 1996 Management Incentive Plan
("MIP"). The principal purpose of the MIP is to advance the interests of the
Company by providing annual bonuses for officers of the Company so as to attract
and retain such officers, make their compensation competitive with other
opportunities, and cause them to strive to achieve the Company's financial and
other business objectives. All officers of the Company are eligible to be
selected as MIP participants. Participants in the MIP are selected by the
Compensation and Stock Option Committee.
 
     Pursuant to the terms of the MIP, officers are eligible to receive "target"
bonuses established as a percentage of each participant's annual base salary if
the Company meets certain performance goals selected by the Compensation and
Stock Option Committee related to the achievement of pre-tax income or operating
 
                                        8
<PAGE>   11
 
income (or a combination thereof). The MIP provides a formula or matrix
prescribing the extent to which a participant's target bonus may be earned based
upon the degree of achievement of such performance goal or goals. The current
target bonus range is 25.5% to 62.5% of participants' base salaries for 1996.
The MIP also allows the Company, subject to Compensation and Stock Option
Committee approval, to award discretionary cash bonuses for exemplary
performance or to reward special achievements which impact the Company's
results.
 
EXECUTIVE RETIREMENT PLAN
 
     Effective July 1, 1996, the Board of Directors of the Company has adopted
the Executive Retirement Plan (the "ERP"), which is administered by the
Compensation and Stock Option Committee. The principal purpose of the ERP is to
allow executive officers to defer current federal income taxation of their
compensation and, along with the Company's matching contribution, accumulate
monies towards retirement in the absence of any Company retirement plan, other
than the Company's Retirement Savings Plan which severely restricts officer
participation due to certain IRS limitations. Participants in the ERP will not
participate in the Company's Retirement Savings Plan. Pursuant to the terms of
the ERP, executive officers may defer up to 30% of their compensation during any
year. The Company matches 50% of the amounts deferred by the participant. The
participant's contribution, plus the Company match, remain unfunded by the
Company until paid to the participant at retirement or other termination of
employment. Any amounts deferred by the participant, and Company matching
contributions, are credited monthly with interest at the prime rate and are
increased yearly by the annual increase in the S&P 500 index if such increase
exceeds the interest credited monthly to the participant during the calendar
year.
 
OHM CORPORATION RETIREMENT SAVINGS PLAN
 
     The Company's Retirement Savings Plan (the "Retirement Plan") was
established in 1988. Officers of the Company (excluding officers participating
in the ERP), together with substantially all full-time salaried employees and
certain other employees of the Company and its subsidiaries, are eligible to
participate in the Plan. Participants may make basic contributions of up to a
combination of 15% of their compensation, as defined in the Retirement Plan,
which qualify for deferred tax treatment under Section 401(k) of the Internal
Revenue Code (the "Code"). The Company makes matching contributions of 100% of
the first two percent of the participant's compensation contributed to the Plan
and 50% of the next four percent of the participant's compensation contributed
to the Plan. Matching contributions are allocated to the accounts of
participants in the Plan who have completed two years of service. The Company
also may, in its discretion, make profit sharing contributions to the Plan which
will be allocated to all eligible employees. All participant contributions are
invested at the direction of the participant, and all profit sharing
contributions are invested at the direction of the Plan committee. Matching
contributions are made in Company stock and, upon allocation to a participant's
account, may be reinvested at the direction of the participant. Amounts
attributable to the Company's matching contributions vest upon the earlier of
(i) the completion of two years of service, or (ii) the participant's death,
disability or attaining age 65 while an employee. During 1995, an aggregate of
$39,302 was contributed as matching contributions under the Plan to the accounts
of all executive officers as a group. Matching contributions for the six most
highly compensated executive officers named are shown above under the heading
"Executive Compensation and Other Information, Summary of Cash and Certain Other
Compensation." The Company made no profit sharing contributions to the Plan
during 1995.
 
1986 STOCK OPTION PLAN
 
     Officers and other key employees of the Company are eligible to participate
in the Company's 1986 Stock Option Plan, the terms of which are fully described
below.
 
DIRECTORS' NON-QUALIFIED STOCK OPTION PLAN
 
     The Company recognizes the importance of attracting and retaining
outstanding individuals as directors and of stimulating the active interest of
these persons in the development and financial success of the Company. The Board
of Directors believes that the Directors' Non-Qualified Stock Option Plan (the
 
                                        9
<PAGE>   12
 
"Director Option Plan") is a significant factor in furtherance of these
objectives and intends, through the Director Option Plan, to increase the
Company's profits by providing such persons with opportunities to acquire shares
of the Common Stock of the Company on advantageous terms.
 
     Only Directors who are not employees of the Company and its subsidiaries
are eligible to participate in the Director Option Plan. The Director Option
Plan provides that the total number of shares that may be sold upon the exercise
of stock options shall not exceed 1,000,000 shares of Common Stock. The Director
Option Plan is of indefinite duration and will continue in effect until all
shares reserved for options thereunder have been sold or until earlier
termination of the Director Option Plan.
 
     The Director Option Plan provides for automatic grants of options to
purchase shares of Common Stock of the Company to Directors of the Company who
are not employees of the Company or its subsidiaries. Under the Director Option
Plan, each person who was an incumbent non-employee Director of the Company
received an option to purchase 15,000 shares of Common Stock, as of August 6,
1992, the effective date of the Director Option Plan, provided that the total
number of shares each optionee was eligible to receive was reduced by the number
of shares of Common Stock subject to prior option grants to such Director. Each
person who first becomes a non-employee Director of the Company after the
effective date is entitled to receive an option to purchase 15,000 shares of
Common Stock as of the date such person first became a non-employee Director.
Each person who is a non-employee Director of the Company is entitled to receive
an option to purchase 5,000 shares of Common Stock immediately after each of the
Company's annual meetings of shareholders. An option is exercisable in full upon
six months of continuous service as a non-employee Director. Options granted
under the Plan are options that do not qualify under particular provisions of
the Code. The Director Option Plan is administered by employee directors who are
not eligible to participate in the Director Option Plan.
 
DIRECTORS' DEFERRED FEE PLAN
 
     The Board of Directors has adopted the Directors' Deferred Fee Plan (the
"Deferred Fee Plan"), the purpose of which is to help solidify the common
interest of Directors and shareholders in enhancing the value of the Company's
Common Stock. It is also intended that the Deferred Fee Plan will assist in
attracting and retaining qualified individuals to serve as Directors. The
Deferred Fee Plan will give those Directors who are not also employees of the
Company an opportunity to defer current federal income taxation of all or a
portion of their annual retainer and meeting fees payable by the Company for
their services as a Director.
 
     Under the terms of the Deferred Fee Plan, a Director may elect to have his
or her Director's fees credited to an account in either cash or Units (an
accounting unit equal in value to one share of Common Stock). Deferred fees that
a Director elects to have credited in cash will be credited to the Director's
account as they become payable to the Director. A Director's account to which
fees have been credited in cash will earn interest annually at the rate of
interest payable on one-year U.S. Treasury Bills or such other rate as the
Committee designated by the Deferred Fee Plan may establish. In no event,
however, will the rate of interest be more than five percent higher than the
rate payable on such U.S. Treasury Bills. Deferred fees payable in Units will be
credited, together with an amount equal to 10% of such deferred fees, to a
Director's account after the end of the fiscal year on the basis of the average
of the market values of the Common Stock on the last trading day in each
calendar month during the year. Each account to which fees have been credited in
Units shall be credited annually after the end of each fiscal year with
additional Units equal in value to the amount of cash dividends paid by the
Company during such year on Common Stock equivalent to the average daily balance
of Units in such account during the year. The maximum number of Units that may
be granted under the Deferred Fee Plan during its term is 100,000 in the
aggregate. The Deferred Fee Plan is administered by a Committee consisting of
the Chairman of the Board (provided he is an employee-director) and two Company
officers or directors who are employee-directors appointed by the Chairman of
the Board.
 
EMPLOYMENT AND INDEMNIFICATION AGREEMENTS
 
     The Company has entered into agreements with the executive officers named
in the Summary Compensation Table and certain other executive officers providing
that in the event of any "change in control"
 
                                       10
<PAGE>   13
 
of the Company, such officers would continue their employment with the Company
in their present position for terms of approximately three years following such
change in control. During such term of employment, each such officer would be
entitled to receive base compensation and to continue to participate in
incentive and employee benefit plans at levels no less favorable to him than
prior to commencement of the term or to receive a lump sum payment, following
the termination of his employment. Benefits under these agreements are subject
to an overall limitation which assures that payments will not constitute "excess
golden parachute payments" under federal income tax law. While each of such
agreements is presently in effect, none become operative until a change in
control of the Company has occurred, prior to which time the Company and such
officer each reserves the right at any time with or without cause to terminate
their employment relationship. The transactions that are deemed to result in a
change in control for the purposes of these agreements include (a) merger or
consolidation of the Company with, or sale of all or substantially all its
assets to another corporation, as a result of which less than a majority of the
voting shares of the surviving entity are owned by former stockholders of the
Company; (b) any person becoming the beneficial owner of 25% or more of the
voting stock of the Company; (c) reporting by the Company under specified
provisions of the federal securities laws that a change in control has occurred;
and (d) when within any two-year period, a majority of directors at the
beginning of such period (not including persons approved by at least two-thirds
of the Directors still in office who were directors at the beginning of such
period) cease to be directors of the Company. Effective December 12, 1995, the
Company terminated the employment agreements in effect as of such date and,
effective as of January 1, 1996, entered into revised employment agreements with
the executive officers of the Company. The revised employment agreements include
the provisions described above, except that the Board of Directors may, by vote
of three quarters of the members, determine that a change in control described
in (b) above will not cause the employment agreement to become operative.
 
     The Company has also entered into indemnification agreements (the
"Indemnification Agreements") with each current member of the Board of Directors
as well as with each executive officer of the Company. The form and execution of
the Indemnification Agreements were approved by the Company's shareholders. The
Indemnification Agreements were amended as of January 1, 1996 to provide that
Ohio law determines the rights and responsibilities of the Company and the
indemnitee. The amendment was necessary to reflect the Company's reincorporation
under Ohio law previously approved by the shareholders. Such agreements
essentially provide that, to the extent permitted by Ohio law, the Company will
indemnify the indemnitee against all expenses, costs, liabilities and losses
(including attorney's fees, judgments, fines or settlements) incurred or
suffered by the indemnitee in connection with any suit in which the indemnitee
is a party or otherwise involved as a result of his service as a member of the
Board or as an officer.
 
COMPENSATION AND STOCK OPTION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
     Messrs. Gorr, Getz and Schmidt are members of the Compensation and Stock
Option Committee of the Board of Directors of the Company. Mr. Getz is employed
by WMX, which beneficially owns 38.81% of the Company's Common Stock. WMX and
its affiliates and the Company are parties to various agreements, including the
Guarantee Agreement, the Warrant Agreement and the Standstill and
Non-Competition Agreement discussed below. See "Certain Relationships and
Related Transactions."
 
BOARD COMPENSATION AND STOCK OPTION COMMITTEE REPORT*
 
     The primary function of the Compensation and Stock Option Committee is to
review and approve salaries and other benefits for executive officers of the
Company, to make recommendations to the Board of Directors with respect to the
adoption of employee benefit programs and to administer the Company's stock
option plans and to approve awards of stock options made under the Company's
1986 Stock Option Plan. The Compensation and Stock Option Committee is composed
of three Directors, Messrs. Gorr, Getz and Schmidt, who are not executive
officers of the Company. Set forth below is a report of Messrs. Gorr, Getz and
Schmidt
 
- ---------------
 
*Note: This information is not incorporated by reference in any prior or future
       Securities and Exchange Commission filings, directly or by reference to
       the incorporation of proxy statements of the Company, unless such filing
       specifically incorporates this information.
 
                                       11
<PAGE>   14
 
in their capacity as the Board's Compensation and Stock Option Committee
addressing the Company's compensation policies for 1995 as they affected Mr.
James L. Kirk and the other executive officers of the Company.
 
     The Compensation and Stock Option Committee's executive compensation
policies are designed to provide levels of compensation that integrate pay
(considered in connection with grants of stock options under the Company's 1986
Stock Option Plan) with the Company's annual and long-term performance goals,
reward individual achievement and attract and retain qualified executives, all
in the context of the highly competitive industry in which the Company operates.
 
     Salaries for executive officers are determined periodically by evaluating
the performance of the individuals reviewed and their contributions to the
performance of the Company and particular business units, as applicable, their
responsibilities, experience, potential and period of service at their current
salary. Financial results as well as appropriate non-financial measures are
considered. Factors consistent with the Company's overall compensation policy
and strategy may also be considered. With respect to executive officers, the
Company's 1996 Management Incentive Plan provides bonus awards based upon the
Company's achievement of certain financial goals, and allows the Committee to
grant discretionary bonus awards for exemplary performance or to reward special
achievements which impact Company results. In its deliberations, the Committee
takes into account the recommendations of appropriate Company officials. See
"1996 Management Incentive Plan."
 
     The Compensation and Stock Option Committee also endorses the position that
stock ownership by management and stock-based performance compensation
arrangements are beneficial in aligning management's and shareholders' interest
in the enhancement of shareholder value. The granting of stock options pursuant
to the Company's 1986 Stock Option Plan is also within the authority of the
Compensation and Stock Option Committee. In determining grants of stock options
to executive officers, the Compensation and Stock Option Committee has followed
policies substantially similar to those described above with respect to
compensation. James L. Kirk received grants of stock options covering 70,000
shares of Common Stock in 1995, exercisable in installments over a four-year
period. The Compensation and Stock Option Committee considers, in granting such
options to Mr. Kirk, the view expressed above that stock ownership by Mr. Kirk
beneficially aligns his interests with the interests of the Company's
shareholders.
 
     Mr. James L. Kirk's annual base salary of $330,000 was established in May
1991.
 
     Section 162(m) of the Internal Revenue Code of 1986, as amended, prohibits
a publicly held corporation, such as the Company, from claiming a deduction on
its federal income tax return for compensation in excess of $1,000,000 paid for
a given federal year to certain executives. Because of the Company's anticipated
compensation levels in 1996, the Compensation Committee has developed no
policies at this time concerning Section 162(m).
 
     IVAN W. GORR              HERBERT A. GETZ            CHARLES W. SCHMIDT
 
                                       12
<PAGE>   15
 
PERFORMANCE GRAPH*
 
     Set forth below is a line graph comparing the yearly percentage change in
the cumulative total stockholder return on the Common Stock against the
cumulative total return of the S&P Composite-500 Stock Index and a peer group of
companies selected by the Company consisting of companies engaged in the
environmental services industry. These companies are: Smith Environmental
Technologies, Inc. (formerly Canonie Environmental Services Corp. and Reidel
Environmental Technologies, Inc.), Clean Harbors, Inc., Groundwater Technology,
Inc., Handex Environmental Recovery, Inc., International Technologies, Inc.,
Sevenson Environmental Services, Inc., and Roy F. Weston, Inc. (the "Peer
Group").
 
               COMPARISON OF FIVE-YEAR CUMULATIVE TOTAL RETURN ON
                      COMMON STOCK, S&P 500 AND PEER GROUP
              (MARKET VALUE OF $100 INVESTED ON DECEMBER 31, 1990)
 
<TABLE>
<CAPTION>
      MEASUREMENT PERIOD
    (FISCAL YEAR COVERED)       S&P 500            OHM         PEER GROUP
<S>                              <C>             <C>             <C>
12/31/90                         100.00          100.00          100.00
12/31/91                         130.00           81.25          114.35
12/31/92                         139.66           75.00           85.45
12/31/93                         153.53          115.00           61.98
12/31/94                         155.50           85.00           58.40
12/31/95                         213.21           73.75           51.89
</TABLE>                         
 
- ---------------
 
* Note: This information is not incorporated by reference in any prior or future
        Securities and Exchange Commission filings, directly or by reference to
        the incorporation of proxy statements of the Company, unless such filing
        specifically incorporates this information.
 
                                       13
<PAGE>   16
 
                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
TRANSACTIONS WITH MANAGEMENT
 
     The Company provides Robert W. Kirk, a former officer and stockholder of
the Company and father of James L. Kirk and Joseph R. Kirk, with a pension
arrangement pursuant to which the Company is to make payments of $96,000 per
year, subject to further cost of living adjustments, for the remainder of his
life and that of his spouse if she survives him. During 1995, the Company made
payments totaling $102,207.19 to Robert W. Kirk under this pension arrangement.
 
     The Company has proposed to enter into a five-year employment agreement
with Mr. Joseph Kirk commencing in 1996, pursuant to which he will be entitled
to a salary of $250,000 payable in the initial year, and decreasing $25,000
during each of the four succeeding years. The Company proposes that Mr. Kirk be
eligible to receive other benefits and perquisites payable to senior employees.
The complete terms of the proposed employment agreement have not been determined
as of the date hereof, and the proposed employment agreement is subject to
approval by the Board of Directors.
 
     During 1995, Kirk Brothers Co., Inc. ("KBC"), the principal shareholders of
which are Richard C. Kirk and Robert W. Kirk, the brother and father,
respectively, of James L. Kirk and Joseph R. Kirk, provided subcontract services
to OHMR on various projects pursuant to an Agreement dated June 6, 1994 which
was approved by the Board of Directors on February 11, 1994. During 1995, the
Company made payments to KBC totaling $614,699 under this Agreement.
 
     The Company's subsidiary, OHMR leases a building with approximately 5,400
square feet for a monthly rental of $2,925 on a month-to-month basis from The
KDC Company ("KDC"), the principal shareholders of which are James L. Kirk and
Joseph R. Kirk. The OHMR utilizes the building, located near its headquarters in
Findlay, Ohio, for the storage of equipment and inventory and made rental
payments to KDC aggregating $35,100 during 1995 under this arrangement.
 
     During 1995, the Company entered into an office and storage lease with
Findlay Machine and Tool, Inc. ("FMT"), of which Joseph R. Kirk is the principal
shareholder. The rate and other terms of the lease were approved by the Board of
Directors on November 7, 1995. During 1995, the Company made payments to FMT
totaling $58,901 under the lease.
 
     In connection with the commencement of his employment, Mr. Philip V.
Petrocelli, Vice President, Western Operations, received a $100,000 interest
free loan to be forgiven in equal installments on the anniversary date of his
employment over seven consecutive years. The balance of the loan becomes due and
payable immediately in the event Mr. Petrocelli voluntarily leaves the
employment of the Company or is terminated for cause before August 30, 2000.
During 1995, $14,286 of the principal balance was forgiven. As of March 15,
1996, the aggregate principal amount outstanding was $71,428.
 
     The Company has given an interest-free loans to Mr. Robert J. Blackwell,
Vice President, Marketing and Strategic Planning, in the aggregate amount of
$70,000. The loans have varying maturity dates through October 15, 1998. In
1995, $25,000 of the principal balance was forgiven. As of March 15, 1996, the
aggregate principal amount outstanding as $45,000.
 
TRANSACTIONS WITH SHAREHOLDERS
 
     In connection with the Reorganization Agreement (the "Reorganization
Agreement") entered into in connection with the Company's purchase of Rust, the
Company and Rust entered into certain business agreements. First, Rust agreed
that the Company would provide all environmental remediation services under
Rust's governmental Total Environmental Restoration Contracts ("TERCs"), and a
portion of all fees earned under such contracts.
 
     Rust also agreed to maintain, at its cost, certain payment, performance and
surety bonds in connection with certain Rust projects acquired in connection
with the transaction, and to assist the Company in preparing documents and
favorable pricing from Rust and affiliated Company vendors.
 
                                       14
<PAGE>   17
 
     The Company and Rust entered into certain other agreements described below.
 
THE GUARANTEE AGREEMENT
 
     In connection with the Reorganization Agreement, WMX, the parent company of
Rust, and the Company entered into a Guarantee Agreement, which provides that in
exchange for a Warrant (described below), WMX guaranteed indebtedness of the
Company in an amount not to exceed $62,000,000. The Guarantee amount may be
increased from time to time, up to an amount not to exceed $75,000,000 in the
event the Warrant is, in whole or in part, exercised by WMX or transferred to a
third party. On May 31, 1995, WMX guaranteed certain indebtedness under the
Company's Revolving Credit Agreement and the Company, in consideration thereof,
executed a Reimbursement Agreement in favor of WMX obligating the Company to
reimburse WMX for any payments by WMX under the Guarantee.
 
THE WARRANT AGREEMENT
 
     In consideration for the Guarantee, the Company issued a Warrant to WMX
which is exercisable, in whole or in part, until May 31, 2000, for an aggregate
of 700,000 shares of Common Stock (the "Warrant Shares") at an exercise price of
$15.00 per Warrant Share (the "Exercise Price"). The Warrant provides further
that the acquisition by WMX of any of the Warrant Shares upon exercise of all or
any portion of the Warrant is subject to the ownership limitation on the WMX
Group set forth in the Standstill and Non-Competition Agreement (the "Standstill
Agreement") described below. The Warrant provides for certain adjustments to the
Exercise Price and/or the number of Warrant Shares purchasable upon exercise in
the event of a stock combination, stock split, a capital reorganization or
reclassification, a merger or consolidation, or a sale or conveyance of all or
substantially all of the Company's assets.
 
THE STANDSTILL AND NON-COMPETITION AGREEMENT
 
     Pursuant to the Reorganization Agreement, the Company, WMX and Rust entered
into a Standstill Agreement providing that WMX and its affiliates (the "WMX
Group") will not acquire any of the Company's Common Stock or any of the
Company's other securities entitled to vote generally for the election of
directors ("Voting Securities") other than pursuant to exercise of the Warrant,
or in acquisitions, including exercise of the Warrant, that do not result in the
aggregate ownership by the WMX Group of more than 40% of the Company's Voting
Securities, or such lesser percentage as may exist from time to time as the
result of voluntary dispositions by the WMX Group (the "Ownership Limit").
 
     Pursuant to the Standstill Agreement, no member of the WMX Group shall
acquire Voting Securities which would result in the WMX Group owning Voting
Securities beyond the Ownership Limit unless the acquisition is (i) made
pursuant to an offer for all of the Company's outstanding Voting Securities at
the same price, and (ii) is approved by either the Company's independent
directors or the Company's shareholders, other than the WMX Group and certain
other shareholders, pursuant to the Control Share Acquisition provisions of the
Company's Amended and Restated Articles of Incorporation. The Standstill
Agreement also provides that if the WMX Group's ownership level falls below 20%
of the outstanding Voting Securities, the WMX Group shall have an option to
purchase from the Company sufficient Voting Securities at fair market value to
raise its ownership to not more than 21% of the outstanding Voting Securities.
The WMX Group, pursuant to the Standstill Agreement, agrees, among other things,
not to solicit proxies in opposition to any matter recommended by a majority of
the Company's directors not representing Rust (the "Non-Rust Directors"), or to
solicit a tender offer or business combination.
 
     As long as the WMX Group owns at least 20% of the Voting Securities, the
Company will include as nominees to the Board of Directors a number of WMX Group
designees proportionate to the WMX Group's ownership interest (to the lowest
corresponding whole directorship). Furthermore, so long as the WMX Group owns at
least 20% of the outstanding Voting Securities, WMX shall take all actions in
its control to include at least three independent Directors on the Company's
Board of Directors. The Standstill Agreement provides that the WMX Group shall
vote its Common Stock for the Company's nominees to the Board of Directors
selected by a majority of the Non-Rust Directors. The WMX Group shall vote on
all other matters
 
                                       15
<PAGE>   18
 
(i) in accordance with the recommendations of the majority of the Non-Rust
Directors, or (ii) if no recommendation is made, in the same proportion as other
shareholders of the Company shall vote.
 
     Pursuant to the Standstill Agreement, WMX, Rust and their respective
wholly-owned subsidiaries (the "WMX Affiliates") have agreed not to engage in
the business of providing field services for the on-site remediation of
hazardous substances in North America for seven years after the closing except
as otherwise provided in the Standstill Agreement. The Standstill Agreement also
provides that for so long as the WMX Group owns at least 20% of the outstanding
Voting Securities, (i) the Company shall be a preferred provider of certain
environmental remediation services to the WMX Affiliates, and (ii) the WMX
Affiliates shall be preferred providers of engineering, consulting, and design
environmental and waste management services to the Company. Also, Rust will
provide the Company access to its engineering, consulting, design and project
management services personnel on the same terms and conditions as Rust provides
them to WMX Affiliates. Additionally, the Standstill Agreement provides that the
WMX Affiliates will contract with the Company for $20 million of environmental
remediation services. Pursuant to Amendment No. 3, Settlement and Release
Agreement, dated as of March 22, 1996, among the Company, OHMR, WMX, Rust and
Rust Remedial, the date for contracting by the WMX Affiliates with the Company
was extended from December 31, 1996 to December 31, 1997.
 
OTHER SERVICES
 
     In 1995, the Company's subsidiary, OHMR, received from WMX and its
affiliates $10,241,593 for remediation and construction services performed by
OHMR. OHMR paid $6,636,000 to WMX and its affiliates for engineering-related and
disposal services.
 
           PROPOSAL 2:  TO AMEND THE COMPANY'S 1986 STOCK OPTION PLAN
 
     The Board of Directors has approved, subject to the further approval of the
shareholders of the Company, an amendment of the Company's 1986 Stock Option
Plan (the "1986 Plan") to increase by 1,000,000 shares the aggregate number of
shares of Common Stock which may be sold upon exercise of stock options granted
under the 1986 Plan from 2,850,000 to 3,850,000.
 
     The Company recognizes the importance of attracting and retaining
outstanding individuals as officers and employees, and of stimulating the active
interest of these persons in the development and financial success of the
Company. The Board of Directors believes that the 1986 Plan is a significant
factor in furtherance of these objectives and intends, through the 1986 Plan, to
furnish incentives to officers, and employees to increase the Company's profits
by providing such persons with opportunities to acquire shares of the Common
Stock of the Company on advantageous terms. In light of the competitive industry
in which the Company participates, the Board of Directors believes the 1986 Plan
is a particularly important factor in the Company's overall compensation program
and in attracting and retaining officers and key employees. However, as of March
15, 1996, and absent approval of this Proposal, there were only 287,894 shares
remaining available for issuance upon exercise of stock options granted under
the 1986 Plan. In addition, 133,220 stock options outstanding as of March 15
with option exercise prices of $7.625 will expire before June 30, 1997 if such
options are not exercised prior to such date. Options which expire may not be
granted in the future and, therefore, reduce the total shares issuable under the
1986 Plan. The Board of Directors believes that in order to continue the
effectiveness of the 1986 Plan in achieving the objectives discussed above, it
would be desirable to increase to 3,850,000 the aggregate number of shares which
may be issued upon the exercise of stock options granted under the 1986 Plan.
The following description of the 1986 Plan is qualified in its entirety by
reference to the 1986 Plan, as amended, attached hereto as Annex 1.
 
     Officers and key employees of the Company and its subsidiaries, which
consist of approximately 190 individuals, are eligible to receive stock options
under the 1986 Plan. The purpose of the 1986 Plan is to attract and retain
outstanding individuals as officers and employees of the Company and its
subsidiaries, and to furnish incentives to such persons to increase the
Company's profits by providing them opportunities to acquire shares of Common
Stock of the Company on advantageous terms. The 1986 Plan is administered by the
Compensation and Stock Option Committee of the Board of Directors, consisting of
Messrs. Getz, Gorr
 
                                       16
<PAGE>   19
 
and Schmidt, which determines the terms and conditions of stock options issued
under the 1986 Plan, amounts of benefits granted, and the officers and key
employees who shall receive them. Options granted under the 1986 Plan may be (i)
options that are intended to qualify under particular provisions of the Internal
Revenue Code, as in effect from time to time (the "Code"); (ii) options that are
not intended to so qualify; or (iii) combinations of the foregoing.
 
     The 1986 Plan, as amended, authorizes the granting of options to purchase
up to an aggregate of 3,850,000 shares of the Company's Common Stock. Option
agreements evidencing the grant of options are required to specify an option
price which is not less than the fair market value of shares of Common Stock of
the Company on the date of grant. Option agreements must also specify the
methods of payment of the option price, which may be (i) in cash or by check;
(ii) by delivery of Common Stock of the Company already owned by the optionee
having a fair value at the time of exercise equal to the total option price; or
(iii) a combination of such methods of payment. No stock option granted under
the 1986 Plan may be exercised more than ten years from the date of grant. The
1986 Plan does not impose a limit on the number of shares that may be optioned
to a particular employee or officer. However, the Code requires that the
aggregate fair market value (determined at the time the options are granted) of
stock with respect to which "incentive stock options" are exercisable for the
first time by any one employee during any calendar year not exceed a total of
$100,000. Outstanding options are subject to adjustment in specified events,
such as stock dividends, stock splits, recapitalizations and mergers, and the
number of shares authorized by the 1986 Plan is subject to adjustment in those
events.
 
     Stock options issued under the 1986 Plan may be either Non-Qualified Stock
Options or Incentive Stock Options with the following Federal tax consequences.
 
     The 1986 Plan may be amended by the Board of Directors of the Company
without stockholder approval; however, no such amendment may (i) increase the
maximum number of shares of Common Stock available under the 1986 Plan; (ii)
change the eligible participants under the 1986 Plan; or (iii) cause Rule 16b-3
of the Commission (or any successor rule to the same effect) to cease to be
applicable to the 1986 Plan.
 
     Based on the closing price of the Company's Common Stock on the NYSE on
March 15, 1996, the market value of the shares of Common Stock underlying the
additional 1,000,000 options being authorized hereby would be $7,250,000. The
Company is entitled to receive the exercise price for each share of Common Stock
issued upon exercise of a stock option, which exercise price will be the market
value of the Common Stock on the date of grant of such option.
 
                                       17
<PAGE>   20
 
     The following table sets forth information with respect to grants of
options pursuant to the Company's 1986 Stock Option Plan made to the executive
officers named in the Summary Compensation Table and the executive officers of
the Company as a group.
 
<TABLE>
<CAPTION>
                                              1986 STOCK OPTION PLAN
                                            --------------------------
                                               NUMBER OF SECURITIES
                                            UNDERLYING OPTIONS GRANTED
           NAME AND POSITION                      IN FISCAL 1995
- ----------------------------------------    --------------------------
<S>                                         <C>
James L. Kirk                                          70,000
  Chairman, President and Chief
  Executive Officer
Joseph R. Kirk                                         50,000
  Executive Vice President
Robert J. Blackwell                                    25,000
  Vice President, Marketing and
  Strategic Planning
Frank A. McBride                                       10,000
  Vice President
Michael A. Szomjassy                                   25,000
  Vice President, Eastern
  Operations
Philip V. Petrocelli                                   25,000
  Vice President, Western
  Operations
Executive Group                                       313,500
Non-Executive Director Group                               --
Non-Executive Officers Employee Group                 319,250
</TABLE>
 
     Non-Qualified Stock Options.  A stock option not qualified under the Code
(a "Non-Qualified Stock Option") generally will not result in any taxable income
to the optionee at the time it is granted. In general, the holder of a
Non-Qualified Stock Option will realize ordinary income at the time of exercise
of the option in an amount measured by the excess of the fair market value of
the optioned shares (at the time of exercise) over the option price. However,
the Section 16(b) Deferral (as defined below) will apply in the case of
optionees who are officers of the Company.
 
     If the option price of a Non-Qualified Stock Option is paid for by the
delivery of shares of Common Stock previously owned by the optionee, no gain or
loss will be recognized to the extent that the shares received are equal in fair
market value to the shares surrendered.
 
     Section 83 of the Code deals generally with property (including stock)
received by an employee as compensation, and provides for deferral of taxation
so long as the employee's rights in the property are subject to a substantial
risk of forfeiture and are not transferable. Section 83 will apply so long as
the sale of stock received could subject the employee to suit under Section
16(b) of the Securities Exchange Act of 1934, but not longer than six months
(the "Section 16(b) Deferral").
 
     The Section 16(b) Deferral can be avoided if the officer makes an election
within thirty days after the transfer of stock to him to have it taxed to him as
ordinary income at its fair market value on the date of transfer less the
amount, if any, paid by him.
 
     Incentive Stock Options. An incentive stock option, i.e., a stock option
that is qualified under the Code (an "Incentive Stock Option"), will not result
in any taxable income to the optionee when it is granted or timely exercised. To
be timely exercised, an Incentive Stock Option must be exercised within three
months after the optionee ceases to be an employee (within one year if the
optionee is disabled) unless the optionee has died. If the optioned stock is
held more than two years from the date of grant of the option and more than
 
                                       18
<PAGE>   21
 
one year after the transfer of the stock to the optionee, the optionee will be
taxed on any gain on the sale of such stock at long-term capital gains rates.
 
     If Common Stock acquired on the exercise of an Incentive Stock Option is
sold, exchanged or otherwise disposed of before the end of the required holding
periods, the optionee will in the usual case realize ordinary income at the time
of disposition equal to the excess of the fair market value of the stock at the
time of exercise over the option price.
 
     Under Section 1036 of the Code, if shares of Common Stock previously owned
by the optionee are transferred in payment of the option price under an
Incentive Stock Option, generally no gain or loss will be recognized on the
surrender of such shares to the extent the fair market value of the shares
received equals the fair market value of the shares surrendered. The shares
received in such equal exchange will have the same tax basis and holding period
as the shares surrendered; any additional shares received will have a zero basis
and the holding period will commence on the transfer date. The spread at the
time of exercise will not be subject to tax if the holding period and other
requirements for an Incentive Stock Option are satisfied. However, if any shares
transferred in payment of the option price under an Incentive Stock Option were
previously acquired by the optionee on the exercise of an Incentive Stock Option
and were held for less than the necessary holding period, Section 1036 would not
be available. As a result, the optionee would realize income on the surrender of
such shares in payment of the option price.
 
     General Matters. To the extent that an employee recognizes ordinary income
in the circumstances described above, the Company would be entitled to a
corresponding deduction, provided, among other things, that such income meets
the test of reasonableness and is an ordinary and necessary business expense.
 
     Withholding of Federal taxes at applicable rates will be required in
connection with ordinary income realized by an optionee upon exercise of
Non-Qualified Stock Options and disqualifying dispositions of stock acquired
upon exercise of an Incentive Stock Option.
 
     THE BOARD OF DIRECTORS RECOMMENDS THAT STOCKHOLDERS VOTE FOR PROPOSAL 2.
                                                              ---
              VOTING OF SHARES HELD IN THE RETIREMENT SAVINGS PLAN
 
     If you are a participant in the Company's Retirement Savings Plan, you are
entitled to direct the trustees of the plan to vote the shares credited to your
individual account in accordance with your instructions. This may be
accomplished by marking and returning the proxy card accompanying the mailing
and relating to the shares in the plan credited to your account. If you do not
return such proxy card, your shares held in the plan will be voted in the manner
directed by the Administrative Committee of the Company's Retirement Savings
Plan. If you are also a direct owner of shares (acquired other than through the
plan), you will receive a separate mailing containing a proxy card relating to
such shares.
 
                     INDEPENDENT CERTIFIED PUBLIC AUDITORS
 
     Ernst & Young LLP has been selected as the Company's independent certified
public auditors for the fiscal year ending December 31, 1996. Ernst & Young LLP
has served as the Company's independent certified public auditors since July 1,
1986. A representative of Ernst & Young LLP will be present at the Annual
Meeting with an opportunity to make a statement if he desires to do so and to
respond to appropriate questions.
 
                              FINANCIAL STATEMENTS
 
     The Company has enclosed its Annual Report to Shareholders for the year
ended December 31, 1995 with this Proxy Statement. Shareholders are referred to
the report for financial and other information about the Company but such report
is not incorporated in this proxy statement and is not part of the proxy
soliciting material.
 
                                       19
<PAGE>   22
 
                           PROPOSALS BY SHAREHOLDERS
 
     Any proposals by shareholders intended to be presented at the 1997 annual
meeting must be received by the Company no later than December 1, 1996 in order
to be considered by the Board of Directors for inclusion in the Company 1997
Proxy Statement. In order for a shareholder to nominate a candidate for
director, under the Company's Regulations, timely notice of the nomination must
be received by the Secretary of the Company in advance of the meeting. To be
timely, such notice must be received not less than 60 nor more than 90 days
before the meeting (but if the Company gives less than 75 days' notice of the
meeting, then such notice must be received prior to the meeting and within 75
days after notice of the meeting is mailed or other public disclosure of the
meeting is made). The shareholder filing the notice of nomination must describe
various matters regarding the nominee, including such information as name, age,
business and residential address, occupation and shares beneficially owned and
any other information relating to such person that is required to be disclosed
in solicitations for proxies for election of directors pursuant to Regulation
14A under the Securities Exchange Act of 1934, and as to the shareholder giving
notice, the name and address of such shareholder and the class and number of
shares of the Company which are beneficially owned by such shareholder. Such
notice shall be accompanied by the written consent of each proposed nominee to
serve as a director of the Company unless nominated in accordance with these
procedures.
 
     In order for a shareholder to bring other business before a shareholder
meeting; notice must be received by the Secretary of the Company not less than
30 days before the meeting. Such notice must include a description of the
proposed business, the reasons therefor, and other specific matters. These
requirements are separate from and in addition to the requirements a shareholder
must meet to have a proposal considered for inclusion in the Company's 1997
Proxy Statement.
 
     In each case, the notice must be given to the Secretary of the Company,
whose address is 16406 U.S. Route 224 East, Findlay, Ohio 45840. Any shareholder
desiring a copy of the Company's Regulations will be furnished one without
charge upon written request to the Secretary.
 
                                 OTHER MATTERS
 
     The Board of Directors knows of no other matters to be presented for action
at the forthcoming Annual Meeting. However, the proxy confers upon the persons
named therein discretionary authority to act upon any other matter that may
properly come before the meeting.
 
     THE COMPANY WILL FURNISH ANOTHER COPY OF ITS ANNUAL REPORT ON FORM 10-K FOR
THE YEAR ENDED DECEMBER 31, 1995, INCLUDING FINANCIAL STATEMENTS AND SCHEDULES
THERETO, BUT EXCLUDING OTHER EXHIBITS, WITHOUT CHARGE, TO ANY PERSON UPON
WRITTEN REQUEST ADDRESSED TO PAMELA K.M. BEALL, VICE PRESIDENT, TREASURER AND
ASSISTANT SECRETARY, OHM CORPORATION, 16406 U.S. ROUTE 224 EAST, FINDLAY, OHIO
45840.
 
                                            John J. Ray III
                                            Vice President and Secretary
 
March 29, 1996
Findlay, Ohio
 
                                       20
<PAGE>   23
 
                                                                         ANNEX 1
 
                                OHM CORPORATION
 
                             1986 STOCK OPTION PLAN
                           (AS AMENDED AND RESTATED)
 
     1. Purpose.  The purpose of this Plan is to attract and retain personnel
for OHM Corporation (the "Company") and its Subsidiaries and to provide to such
personnel incentives and rewards for service to the Company and superior
performance.
 
     2. Definitions.  As used in this Plan,
 
     (a) The term "Board" means the Board of Directors of the Company.
 
     (b) The term "Committee" shall mean the committee of not less than three
Directors appointed by resolutions adopted by the Board in accordance with
Paragraph 9 hereof.
 
     (c) The term "Common Stock" means Common Stock, par value $.10 per share,
of the Company or any security into which such Common Stock may be changed by
reason of any transaction or event of the type described in Paragraph 6.
 
     (d) The term "Date of Grant" means the date specified by the Committee on
which a grant of Stock Options shall become effective (which date shall not be
earlier than the date on which the Committee takes action with respect thereto).
 
     (e) The term "Eligible Participant" means any person who is selected by the
Committee for participation in this Plan and who is at the time (1) a Director,
(2) an officer or (3) a key employee of the Company or any of its Subsidiaries.
The term "Eligible Participant" shall not, however, include any person or group
of persons designated by a resolution adopted by the Board or the committee as
being ineligible to participate in this Plan.
 
     (f) The term "Market Value per Share" means, at any date, the closing sales
price for the Common Stock on that date (or, if there are no sales on that date,
the last preceding date on which there was a sale) on the New York Stock
Exchange or the consolidated tape as reported by The Wall Street Journal.
 
     (g) The term "Optionee" means the optionee named in an agreement evidencing
an outstanding Stock Option.
 
     (h) The term "Option Right" means the right to purchase one share of Common
Stock upon exercise of a Stock Option granted pursuant to Paragraph 4.
 
     (i) The term "Subsidiary" means any corporation in which at the time the
Company owns or controls, directly or indirectly, not less than 50% of the total
combined voting power represented by all classes of stock issued by such
corporation, including, without limitation, OHM Remediation Services Corp.
 
     3. Shares Available Under Plan.  The shares of Common Stock which may be
sold upon the exercise of Stock Options shall not exceed to the aggregate
3,850,000 shares, subject to adjustment as provided in Paragraph 6 of this Plan.
Such shares may be shares of original issuance or treasury shares or a
combination of the foregoing.
 
     4. Stock Options.  The Committee may, from time to time and upon such terms
and conditions as it may determine, authorize the granting to Eligible
Participants of options to purchase shares of Common Stock ("Stock Options").
Each such grant may utilize any or all of the authorizations, and shall be
subject to all of the limitations, contained in the following provisions:
 
     (a) Each grant shall specify the number of shares of Common Stock to which
it pertains.
 
     (b) Each grant shall specify an option price per share equal to the Market
Value per Share on the Date of Grant.
 
                                       21
<PAGE>   24
 
     (c) Each grant shall specify the method of payment of the option price,
which may be (i) in cash or by check acceptable to the Company, (ii) by delivery
to the Company of Common Stock already owned by the Optionee, which has been
held by the Optionee for such minimum period of time as the Committee may
specify, having a fair market value at the time of exercise equal to the total
option price, or (iii) a combination of such methods of payments.
 
     (d) Successive grants may be made to the same Eligible Participant whether
or not any Stock Option previously granted to such Eligible Participant remains
unexercised.
 
     (e) Each grant may specify the period or periods of continuous employment
by the Optionee with the Company or any Subsidiary (or, in the case of
non-employee Directors, continuous service by the Optionee as such Director), if
any, which is necessary before the Stock Options or installments thereof will
become exercisable.
 
     (f) Stock Options granted under this Plan may be (i) options which are
intended to qualify under particular provisions of the Internal Revenue Code, as
in effect from time to time, (ii) options which are not intended to so qualify,
or (iii) combinations of the foregoing. With respect to Stock Options which are
intended to qualify as "incentive stock options" under Section 422A of the
Internal Revenue Code ("ISOs"): (i) in the case of ISOs granted in 1986, the
aggregate fair market value (determined as of the time the options are granted)
of the stock for which any Eligible Participant may be granted ISOs in any
calendar year (under all plans of the Company and subsidiary corporations, if
any) shall not exceed $100,000 plus any unused limit carryover to such year
(determined as provided in said Section 422A) and (ii) in the case of ISOs
granted after 1986, the aggregate fair market value (determined as of the time
the options are granted) of the stock with respect to which such ISOs are
exercisable for the first time by any Eligible Participant during any calendar
year (under all plans of the Company and its parent and Subsidiary corporations,
if any) shall not exceed $100,000.
 
     (g) No Stock Option shall be exercisable more than ten years from the Date
of Grant.
 
     (h) Each grant of a Stock Option shall be evidenced by an agreement
executed on behalf of the Company by any officer and delivered to and accepted
by the Eligible Participant and containing such terms and provisions, consistent
with this Plan, as the Committee may approve.
 
     5. Transferability.  No Stock Option shall be transferable by an Optionee
other than by will or the laws of descent and distribution. Stock Options shall
be exercisable during the Optionee's lifetime only by him or by his guardian or
legal representatives.
 
     6. Adjustments.  The Board may make or provide for such adjustments in the
maximum number of shares specified in Paragraph 3, in the number of shares of
Common Stock covered by outstanding Stock Options granted hereunder, and in the
prices per share applicable to such Stock Options, as such Board in its sole
discretion, exercised in good faith, may determine is equitably required to
prevent dilution or enlargement of the rights of Optionees that otherwise would
result from any stock dividend, stock split, combination of shares,
recapitalization or other change in the capital structure of the Company,
merger, consolidation, spin-off, reorganization, partial or complete
liquidations, issuance of rights or warrants to purchase securities, or any
other corporation transaction or event having an effect similar to any of the
foregoing.
 
     7. Fractional Shares.  The Company shall not be required to issue any
fractional shares of Common Stock pursuant to this Plan. The Committee may
provide for the elimination of fractions or for the settlement of fractions in
cash.
 
     8. Payment of Taxes.  Upon exercise of any options, it shall be a condition
to the obligation of the Company to issue shares that the Optionee pay to the
Company such amount as the Company may request for the purpose of satisfying its
liability to withhold Federal, state or local income or other taxes.
 
                                       22
<PAGE>   25
 
     9. Administration of the Plan.  (a) This Plan shall be administered by a
Stock Option Committee (the "Committee") of not less than three Directors
appointed by resolution adopted by the Board. Each member of the Committee shall
be a "disinterested person" within the meaning of Rule 16b-3 of the Securities
and Exchange Commission (or any successor rule to the same effect). A majority
of the Committee shall constitute a quorum, and the action of the members of the
Committee present at any meeting at which a quorum is present, or acts
unanimously approved in writing, shall be the acts of the Committee.
 
     (b) The interpretation and construction by the Committee of any provision
of this Plan or of any agreement, notification or document evidencing the grant
of Stock Options and any determination by the Committee pursuant to any
provision of this Plan or of any such agreement, notification or document shall
be final and conclusive. No member of the Committee shall be liable for any such
action or determination made in good faith.
 
     10. Amendments, Etc.  (a) This Plan may be amended form time to time by the
Board, but without further approval by the shareholders of the Company no such
amendment shall (i) increase the maximum number of shares specified in Paragraph
3 (except that adjustments authorized by Paragraph 6 shall not be limited by
this provision), (ii) change the definition of "Eligible Participant," or (ii)
cause Rule 16b-3 of the Securities and Exchange Act of 1934 (or any successor
rule to the same effect) to cease to be applicable to this Plan.
 
     (b) Any agreement evidencing an outstanding Stock Option may, with the
concurrence of the affected Optionee, be amended by the Committee, provided that
the terms and conditions of such amendment are not inconsistent with this Plan.
 
     (c) The Committee may, with the concurrence of the affected Optionee,
cancel any agreement evidencing a Stock Option granted under this Plan. In the
event of such cancellation, the Committee may authorize the granting of a new
Stock Option (which may or may not cover the same number of shares which had
been the subject of the prior agreement) in such manner, at such option price
and subject to the same terms, conditions and discretions, as, under this Plan,
would have been applicable had the canceled Stock Option not been granted.
 
     (d) In the case of termination of employment by reason of death, disability
or retirement under a retirement plan of the Company or a Subsidiary of an
Optionee who holds a Stock Option not immediately exercisable in full, the
Committee may, in its sole discretion, accelerate the time at which such Stock
Option may be exercised.
 
     (e) This Plan shall not confer upon any Eligible Employee any right with
respect to continuance of employment with the Company or any Subsidiary, nor
shall it interfere in any way with any right such Eligible Participant, the
Company or any Subsidiary would otherwise have to terminate such Eligible
Participant's employment at any time.
 
     11. Successors.  In the event that another corporation shall become the
successor of the Company by reason of the merger, consolidation or acquisition
of substantially all of the assets and business of the Company, it shall be a
condition to the consummation of such merger, consolidation or acquisition that
such successor corporation shall assume and agree to perform all options then
outstanding under this Stock Option Plan, as such options may have been adjusted
pursuant to Paragraph 6 hereof by reason of such merger, consolidation or
acquisition.
 
                                       23
<PAGE>   26
                                                

                                      
                               OHM CORPORATION
            PROXY FOR ANNUAL MEETING OF SHAREHOLDERS, MAY 9, 1996
                                      
          The undersigned hereby appoints each of Pamela K.M. Beall and        
      John J. Ray III as proxies with full power of substitution, and          
P     hereby authorizes each of them to present and vote, as designated on
      the reverse side of this card, all the shares of the Common Stock,       
R     $0.10 par value, held of record on March 19, 1996 by the undersigned
      in OHM CORPORATION, at the Annual Meeting of Shareholders to be held
O     on May 9, 1996 and at any adjournments thereof.                          
                                                                               
X         This proxy is solicited on behalf of the Board of Directors.         
      When properly executed, it will be voted in the manner directed on       
Y     the reverse side of this card by the undersigned shareholder; if no      
      direction is made, this proxy will be voted for Items #1, #2 and #3.
                                            Date:                   , 1996
                                                 -------------------           
                                            -----------------------------
                                                                               
                                            -----------------------------      
                                                Shareholder Signature          
                                            Please sign your name exactly      
                                            as it appears at left. In          
                                            signing as attorney, executor,
                                            trustee or guardian, please        
                                            give full title as such, and if    
                                            signing for a corporation,     
                                            please give your title. When      
                                            shares are in the name of more     
       PLEASE MARK, SIGN, DATE AND MAIL     than one person, each should sign. 
       THIS PROXY CARD                                                         
       PROMPTLY, USING THE ENCLOSED                                            
       PREPAID ENVELOPE.                                                       
                                                                               


                                                                               
                               OHM CORPORATION
                                      
                                    PROXY
      THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR ITEMS #1 THROUGH #3.
 
         1. Election of Directors:                                             
                                                                               
            / / FOR all of the nominees, except vote withheld from those       
            whose names are entered on the line below:                         
                                                                               
           NOMINEES: Victor J. Barnhart, Herbert A. Getz, Ivan W. Gorr,        
            Charles D. Hollister, Ph.D., James L. Kirk, Joseph R. Kirk, James
            E. Koenig, Richard W. Pogue and Charles W. Schmidt                 
                                                                               
         -------------------------------------------------------------------   
                                                                               
           / / WITHHOLD authority to vote for all of the above nominees        
                                                                               
         2. Approve the amendment to the 1986 Stock Option Plan                
                                                                               
           / / FOR          / / AGAINST          / / ABSTAIN                   
                                                                               
         3. In their discretion, the proxies are authorized to vote upon such
            other business as may properly come before the meeting or any      
            adjournment thereof.                                               
                                                                               
                BE SURE TO DATE AND SIGN THE REVERSE SIDE OF THIS CARD         
                                                                               
                                                                               
                                                                               
                                                                               
                                                                               
                                                                               


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