ICF KAISER INTERNATIONAL INC
11-K, 1999-06-30
HAZARDOUS WASTE MANAGEMENT
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<PAGE>

                      SECURITIES AND EXCHANGE COMMISSION
                               Washington, D.C.



                             ____________________



                                   FORM 11-K



                             ____________________


(Mark One)


                  [X] ANNUAL REPORT PURSUANT TO SECTION 15(d)
                    OF THE SECURITIES EXCHANGE ACT OF 1934
                                [FEE REQUIRED]



For the fiscal year ended December 31, 1998



                                      OR



                [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d)
                    OF THE SECURITIES EXCHANGE ACT OF 1934
                               [NO FEE REQUIRED]



For the transition period from _____ to _____


Commission file number 1-12248

        A. Full title of the plan and the address of the plan, if different from
that of the issuer named below:

                ICF Kaiser International, Inc. Section 401(k) Plan


        B. Name of issuer of the securities held pursuant to the plan and the
address of its principal executive office:

                ICF Kaiser International, Inc.
                9300 Lee Highway
                Fairfax, Virginia 22031-1207
<PAGE>


                        ICF KAISER INTERNATIONAL, INC.

                              SECTION 401(k) PLAN
                              ___________________

                             FINANCIAL STATEMENTS
                       AS OF DECEMBER 31, 1998 AND 1997
                   AND FOR THE YEAR ENDED DECEMBER 31, 1998
                              AND REPORT THEREON
                                 _____________
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.

                              SECTION 401(k) PLAN
                              ___________________


                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                    Page
                                                                                    ----
<S>                                                                                <C>
Report of Independent Accountants                                                      1
Statements of Net Assets Available for Benefits with Fund Information                2-3
Statement of Changes in Net Assets Available for Benefits with Fund Information        4
Notes to Financial Statements                                                        5-8
Line 27a - Schedule of Assets Held for Investment Purposes                             9
Line 27b - Schedule of Loans or Fixed Income Obligations                           10-11
Line 27d - Schedule of Reportable Transactions                                        12
Exhibits Index                                                                        13
</TABLE>
<PAGE>

                       REPORT OF INDEPENDENT ACCOUNTANTS




ICF Kaiser International, Inc. 401(k) Plan Committee
Fairfax, Virginia


In our opinion, the accompanying statements of net assets available for benefits
with fund information of the ICF Kaiser International, Inc. Section 401(k) Plan
(the Plan) as of December 31, 1998 and 1997, and the related statement of
changes in net assets available for benefits with fund information for the year
ended December 31, 1998 present fairly, in all material respects, the net assets
available for benefits of the Plan as of December 31, 1998 and 1997, and the
changes in net assets available for benefits for the year ended December 31,
1998, in conformity with generally accepted accounting principles.  These
financial statements are the responsibility of the Plan's management; our
responsibility is to express an opinion on these financial statements based on
our audits. We conducted our audits of these statements in accordance with
generally accepted auditing standards, which require that we plan and perform
the audit to obtain reasonable assurance about whether the financial statements
are free of material misstatement.  An audit includes examining, on a test
basis, evidence supporting the amounts and disclosures in the financial
statements, assessing the accounting principles used and significant estimates
made by management and evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for the opinion expressed
above.

Our audits were performed for the purpose of forming an opinion on the basic
financial statements taken as a whole.  The supplemental schedules of assets
held for investment purposes as of December 31, 1998 and of reportable
transactions for the year ended December 31, 1998 are presented for the purpose
of additional analysis and are not a required part of the basic financial
statements but are supplementary information required by the Department of
Labor's Rules and Regulations for Reporting and Disclosure under the Employee
Retirement Income Security Act of 1974. The fund information in the statements
of net assets available for benefits and the statement of changes in net assets
available for benefits is presented for purposes of additional analysis rather
than to present the net assets available for benefits and changes in net assets
available for benefits of each fund. The supplemental schedules and fund
information are the responsibility of the Plan's management. The supplemental
schedules and fund information have been subjected to the auditing procedures
applied in the audits of the basic financial statements and, in our opinion, are
fairly stated in all material respects in relation to the basic financial
statements taken as a whole.

The schedule of loans or fixed income obligations that accompanies the Plan's
financial statements does not disclose the original loan amount, activity
during the year and amounts past due. Disclosure of this information is required
by the Department of Labor's Rules and Regulations for Reporting and Disclosure
under the Employee Retirement Income Security's Act of 1974.


                                    PricewaterhouseCoopers LLP

McLean, Virginia
June 28, 1999

                                       1
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                              SECTION 401(k) PLAN
                       STATEMENT OF NET ASSETS AVAILABLE
                      FOR BENEFITS WITH FUND INFORMATION
                            as of December 31, 1998


<TABLE>
<CAPTION>
                                                                          PARTICIPANT DIRECTED FUNDS
                                     -----------------------------------------------------------------------------------------------
                                                                        Vanguard        Vanguard        Vanguard     Vanguard
                                         Vanguard       Vanguard      International     Long-Term        Morgan        Prime
                                        500 Index       Explorer         Growth         Corporate        Growth     Money Market
                                           Fund           Fund            Fund            Fund            Fund         Fund
                                     -----------------------------------------------------------------------------------------------
                                             *                                              *               *            *
<S>                                  <C>              <C>             <C>            <C>            <C>            <C>
Assets:

Investments at fair value:

     Mutual funds                    $  40,620,829    $  2,548,622    $   3,570,769  $  8,061,612   $  20,654,666  $  17,686,040

     Loans to participants,                      -               -                -             -               -              -
      net of reserve
                                     -----------------------------------------------------------------------------------------------

     Total investments                  40,620,829       2,548,622        3,570,769     8,061,612      20,654,666     17,686,040


Employee contributions receivable                -               -                -             -               -              -
Employer contributions receivable                -               -                -             -               -              -
Loan payments receivable                         -               -                -             -               -              -
                                     -----------------------------------------------------------------------------------------------
Net assets available for benefits    $  40,620,829    $  2,548,622    $   3,570,769  $  8,061,612   $  20,654,666  $  17,686,040
                                     ===============================================================================================

<CAPTION>
                                     -----------------------------------------------------------------------------------------------
                                         Vanguard        Vanguard      ICF Kaiser
                                         PRIMECAP       Wellington       Stock           Loans to
                                          Fund            Fund           Fund          Participants      Other          Total
                                     -----------------------------------------------------------------------------------------------
                                                            *
<S>                                  <C>              <C>             <C>           <C>               <C>            <C>
Assets:

Investments at fair value:

     Mutual funds                    $  6,104,190     $  31,949,163   $   599,690   $           -     $       -      $ 131,795,581

     Loans to participants,                     -                 -             -       2,199,424              -         2,199,424
      net of reserve
                                     -----------------------------------------------------------------------------------------------

     Total investments                  6,104,190        31,949,163       599,690       2,199,424              -       133,995,005


Employee contributions receivable               -                 -             -               -        689,028           689,028
Employer contributions receivable               -                 -             -               -        179,173           179,173
Loan payments receivable                        -                 -             -               -              -                 -
                                     -----------------------------------------------------------------------------------------------
Net assets available for benefits     $  6,104,190    $  31,949,163   $   599,690   $   2,199,424     $ 868,201      $ 134,863,206
                                     ===============================================================================================
</TABLE>

*  Investment represents 5% or more of net assets.

The accompanying notes are an integral part of these financial statements.

                                       2
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                              SECTION 401(k) PLAN
                       STATEMENT OF NET ASSETS AVAILABLE
                      FOR BENEFITS WITH FUND INFORMATION
                            as of December 31, 1997

<TABLE>
<CAPTION>
                                                                     PARTICIPANT DIRECTED FUNDS
                                        --------------------------------------------------------------------------------------
                                                                      Vanguard       Vanguard       Vanguard       Vanguard
                                          Vanguard      Vanguard    International    Long-Term       Morgan         Prime
                                         500 Index      Explorer       Growth        Corporate       Growth      Money Market
                                            Fund          Fund          Fund           Fund           Fund           Fund
                                        --------------------------------------------------------------------------------------
                                             *                                           *             *              *
<S>                                     <C>             <C>         <C>              <C>           <C>            <C>
Assets:

Investments at fair value:

     Mutual funds                        $32,044,301    $2,318,563     $3,148,847    $7,297,022    $17,856,946    $16,118,636

     Loans to participants                         -             -              -             -              -              -
                                        --------------------------------------------------------------------------------------
     Total investments                    32,044,301     2,318,563      3,148,847     7,297,022     17,856,946     16,118,636


Employee contributions receivable                  -             -              -             -              -              -
Employer contributions receivable                  -             -              -             -              -              -
Loan payments receivable                           -             -              -             -              -              -
                                        --------------------------------------------------------------------------------------
Net assets available for benefits        $32,044,301    $2,318,563     $3,148,847    $7,297,022    $17,856,946    $16,118,636
                                        ======================================================================================
<CAPTION>
                                        -----------------------------------------
                                        Vanguard        Vanguard      ICF Kaiser
                                        PRIMECAP       Wellington       Stock         Loans to
                                          Fund            Fund           Fund       Participants      Other          Total
                                        --------------------------------------------------------------------------------------
                                                           *
<S>                                     <C>            <C>              <C>         <C>              <C>          <C>
Assets:

Investments at fair value:

     Mutual funds                       $4,179,494     $31,456,309      $853,160      $        -     $      -     $115,273,278

     Loans to participants                       -               -             -       2,647,666            -        2,647,666
                                        --------------------------------------------------------------------------------------
     Total investments                   4,179,494      31,456,309       853,160       2,647,666            -      117,920,944


Employee contributions receivable                -               -             -               -      348,906          348,906
Employer contributions receivable                -               -             -               -       89,096           89,096
Loan payments receivable                         -               -             -               -       39,102           39,102
                                        --------------------------------------------------------------------------------------
Net assets available for benefits       $4,179,494     $31,456,309      $853,160      $2,647,666     $477,104     $118,398,048
                                        ======================================================================================
</TABLE>


*  Investment represents 5% or more of net assets.





  The accompanying notes are an integral part of these financial statements.

                                       3
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                             SECTION 401 (k) PLAN
                 STATEMENT OF CHANGES IN NET ASSETS AVAILABLE
                      FOR BENEFITS WITH FUND INFORMATION
                     for the year ended December 31, 1998

<TABLE>
<CAPTION>
                                                                             PARTICIPANT DIRECTED FUNDS
                                                    ------------------------------------------------------------------------------
                                                                                Vanguard      Vanguard     Vanguard     Vanguard
                                                     Vanguard      Vanguard   International  Long-Term      Morgan        Prime
                                                     500 Index     Explorer      Growth      Corporate      Growth    Money Market
                                                       Fund          Fund         Fund          Fund         Fund          Fund
                                                    ------------------------------------------------------------------------------
<S>                                                 <C>          <C>          <C>           <C>          <C>           <C>
Additions
Investment income:
   Interest and dividends                           $   611,509  $   23,230    $   71,598   $  632,255   $ 1,592,216   $   898,123
   Net realized gain (loss) on sale of investments      678,355      (4,960)       95,223       (1,615)      175,445             -
   Net unrealized apprec. (deprec.) of investments    7,764,324     117,114       375,903       18,323     2,046,995             -
                                                    ------------------------------------------------------------------------------
                                                      9,054,188     135,384       542,724      648,963     3,814,656       898,123
Contributions:                                      ------------------------------------------------------------------------------
   Employer's                                           648,257     108,767       128,948      137,161       363,821       249,444
   Employees'                                         2,727,095     471,064       605,570      566,220     1,545,223     1,129,851
                                                    ------------------------------------------------------------------------------
                                                      3,375,352     579,831       734,518      703,381     1,909,044     1,379,295
                                                    ------------------------------------------------------------------------------
Other:
   Asset transfers from other plans                     268,183      42,542        54,854       22,743       237,437       132,640
   Other                                                    287
                                                    ------------------------------------------------------------------------------
                                                        268,470      42,542        54,854       22,743       237,437       132,640
                                                    ------------------------------------------------------------------------------

        Total additions                              12,698,010     757,757     1,332,096    1,375,087     5,961,137     2,410,058
                                                    ------------------------------------------------------------------------------

Deductions
Payment of benefits                                   4,608,893     417,521       597,620      875,158     2,563,308     2,355,924
Reserve for delinquent loans                                  -           -             -            -             -             -
Administrative expenses                                  10,122       1,876         1,919        2,176         6,458         7,694
                                                    ------------------------------------------------------------------------------
        Total deductions                              4,619,015     419,397       599,539      877,334     2,569,766     2,363,618
                                                    ------------------------------------------------------------------------------

Net increase (decrease) prior to
  interfund transfers                                 8,078,995     338,360       732,557      497,753     3,391,371        46,440
Interfund transfers                                     497,533    (108,301)     (310,635)     266,837      (593,651)    1,520,964
                                                    ------------------------------------------------------------------------------
Net increase (decrease)                               8,576,528     230,059       421,922      764,590     2,797,720     1.567,404
Net assets available for benefits:
   Beginning of period                               32,044,301   2,318,563     3,148,847    7,297,022    17,856,946    16,118,636
                                                    ------------------------------------------------------------------------------
   End of period                                     40,620,829   2,548,622     3,570,769    8,061,612    20,654,666    17,686,040
                                                    ==============================================================================















 <CAPTION>

                                                           PARTICIPANT DIRECTED FUNDS
                                                    ---------------------------------------
                                                       Vanguard    Vanguard      ICF Kaiser
                                                       PRIMECAP   Wellington       Stock      Loans to
                                                         Fund        Fund          Fund     Participants     Other        Total
                                                    -------------------------------------------------------------------------------
<S>                                                 <C>          <C>           <C>          <C>          <C>           <C>
Additions
Investment income:
   Interest and dividends                           $   230,523  $ 3,535,871   $       20   $  164,175   $          -  $  7,759,520
   Net realized gain (loss) on sale of investments      151,651      278,295       44,823            -              -     1,417,217
   Net unrealized apprec. (deprec.) of investment       880,604     (252,324)    (256,750)           -              -    10,694,189
                                                    -------------------------------------------------------------------------------
                                                      1,262,778    3,561,842     (211,907)     164,175              -    19,870,926
Contributions:                                      -------------------------------------------------------------------------------
   Employer's                                           243,583      484,606       35,249            -              -     2,399,836
   Employees'                                         1,076,241    1,984,174      128,605            -              -    10,234,043
                                                    -------------------------------------------------------------------------------
                                                      1,319,824    2,468,780      163,854            -              -    12,633,879
                                                    -------------------------------------------------------------------------------
Other:
   Asset transfers from other plans                     199,882      130,185        4,753                                 1,093,219
   Other                                                                                                                        287
                                                    -------------------------------------------------------------------------------
                                                        199,882      130,185        4,753            -              -     1,093,506
                                                    -------------------------------------------------------------------------------

        Total additions                               2,782,484    6,160,807      (43,300)     164,175              -    33,598,311
                                                    -------------------------------------------------------------------------------

Deductions
Payment of benefits                                     799,880    4,183,985      111,130      185,765              -    16,699,184
Reserve for delinquent loans                                  -            -            -      389,367              -       389,367
Administrative expenses                                   3,532       10,192          633            -              -        44,602
                                                    -------------------------------------------------------------------------------
        Total deductions                                803,412    4,194,177      111,763      575,132              -    17,133,153
                                                    -------------------------------------------------------------------------------

Net increase (decrease) prior to                      1,979,072    1,966,630     (155,063)    (410,957)             -    16,465,158
 interfund transfers
Interfund transfers                                     (54,376)  (1,473,776)     (98,407)     (37,285)       391,097             -
                                                    -------------------------------------------------------------------------------
Net increase (decrease)                               1,924,696      492,854     (253,470)    (448,242)       391,097    16,465,158
Net assets available for benefits:
   Beginning of period                                4,179,494   31,456,309      853,160    2,647,666        477,104   118,398,048
                                                    -------------------------------------------------------------------------------
   End of period                                      6,104,190   31,949,163      599,690    2,199,424        868,201   134,863,206
                                                    ===============================================================================
</TABLE>

  The accompanying notes are an integral part of these financial statements.

                                       4
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                             SECTION 401 (k) PLAN


NOTES TO FINANCIAL STATEMENTS

NOTE A -- DESCRIPTION OF THE PLAN

The following description of the ICF Kaiser International, Inc. Section 401(k)
Plan (the Plan) provides only general information.  Participants should refer to
the Plan for more detailed information.  The Plan was established effective
March 1, 1989 in accordance with Section 401(k) of the Internal Revenue Code.
The Plan is subject to the provisions of the Employee Retirement Income Security
Act of 1974 (ERISA) and is administered by an administrator appointed by ICF
Kaiser International, Inc. (the Company).  The Plan is a voluntary, defined
contribution plan that allows all eligible employees of the Company to
contribute on a pre-tax basis up to 12% of their compensation, subject to a
statutory limit.  All employees of the Company are eligible to participate in
the Plan.  The Company contributes a match of 50% of the first 4% of employee
contributions.  Employee contributions and Company matching contributions are
deposited with the Vanguard Fiduciary Trust Company (Vanguard), as trustee,
where they are accumulated and invested on behalf of the Plan at the discretion
of the employee.

Within guidelines established by the Plan, participants may elect to direct
their accounts into several alternative investment funds.  As of December 31,
1998, eligible investments included the following funds:

Vanguard 500 Index Fund - Seeks to provide long-term growth of capital and
- ------------------------
income from dividends by holding all of the 500 stocks that make up the
unmanaged Standard & Poor's 500 Composite Stock Price Index, a widely recognized
benchmark of U.S. stock market performance.

Vanguard Explorer Fund - Seeks to provide long-term growth of capital by
- ----------------------
investing in a diversified group of small-company stocks with prospects for
above-average growth.

Vanguard International Growth Fund - Seeks to provide long-term growth of
- -----------------------------------
capital by investing in stocks of high-quality, seasoned companies based outside
the United States.  Stocks are selected from more than 15 countries.

Vanguard Long-Term Corporate Fund  - Seeks to provide a high and sustainable
- ----------------------------------
level of interest income by investing primarily in a diversified group of long-
term bonds issued by corporations with strong credit ratings.

Vanguard Morgan Growth Fund - Seeks long-term growth of capital by investing
- ---------------------------
primarily in stocks of large and mid-sized companies that have strong records of
growth in sales and earnings or that have performed well during certain market
cycles.

Vanguard Prime Money Market Fund  - Seeks to provide high income and a stable
- ---------------------------------
share price of $1 by investing in short-term, high-quality money market
instruments issued by financial institutions, nonfinancial corporations, the
U.S. government, and federal agencies.

Vanguard PRIMECAP Fund - Seeks long-term growth of capital by investing in
- ----------------------
stocks of companies with above-average prospects for continued earnings growth,
strong industry positions, and skilled management teams.

                                       5
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                             SECTION 401 (k) PLAN


NOTES TO FINANCIAL STATEMENTS (Continued)

Vanguard Wellington Fund - Seeks to provide income and long-term growth of
- ------------------------
capital without undue risk to capital by investing about 65% of its assets in
stocks and the remaining 35% in bonds.

ICF Kaiser Stock Fund - This fund is invested primarily in common stock of ICF
- ---------------------
Kaiser International, Inc. (ICF Kaiser Stock).  This fund has been divided into
fund units rather than shares of stock.  Each unit represents a portion of
ownership in the fund.  As of December 31, 1998 and 1997, each fund unit was
valued at $4.81 and $7.77, respectively.  These values are based on the year end
market value of the fund's total employer securities and short-term investment
in Vanguard Money Market Reserves, increased by any fund receivables and
decreased by any fund payables.  The resulting sum is then divided by the total
number of outstanding units in the Company stock fund to obtain a daily value
per fund unit.

A participant can determine the approximate number of shares of the underlying
ICF Kaiser Stock represented by the participant's fund units on the conversion
date by dividing the total market value of the participant's account balance by
the current share price of the stock.  As of December 31, 1998 and 1997, Plan
participants owned 417,176 and 369,333 shares, respectively, of ICF Kaiser Stock
with per share fair values of $1.44 and $2.31, respectively, based upon quoted
market prices.

NOTE B -- ACCOUNTING POLICIES

The Plan follows the accrual method of accounting for financial reporting
purposes.  The accompanying financial statements are prepared in accordance with
generally accepted accounting principles.

Investments are valued for financial statement purposes at fair value.  The
values for the Vanguard Investment funds are based on the quoted net asset value
(redemption value) of the respective investment funds as of the Plan's year-end.
Security transactions are accounted for on the date securities are purchased or
sold (trade date).  Dividend income is recorded on the ex-dividend date.
Interest income is recognized when earned.  The Plan has invested in the
investment options directed by its participants.  Loans to participants are
valued at cost, which approximates fair value.

Employee contributions and the Company's matching contributions are fully vested
upon initial participation and nonforfeitable.  Income, expenses, and gains or
losses (realized and unrealized) of Plan investments are allocated among
participants based upon their respective account balances.  The amount of assets
transferred from other plans represents rollovers for new employees from other
employer qualified plans and are reflected as employee contributions.  Assets
transferred in from other employer qualifed plans as a result of acquisitions
made by the Company have been presented as "Asset transfers from other plans."

Participants who have retired upon reaching the normal retirement date (age 65)
or a deferred retirement date, or who have terminated employment with the
Company, may elect to withdraw the entire amount of their contribution account.
Benefits are recorded when paid.

                                       6
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                             SECTION 401 (k) PLAN


NOTES TO FINANCIAL STATEMENTS (Continued)

Administrative expenses of the Plan are paid by the participants and are
deducted from participants' accounts based on a flat quarterly fee.
Additionally, the Company provides certain administrative support to the Plan at
no cost.

Participants may borrow up to half of their account balance within guidelines
established by the Plan Committee.  Loans accrue interest at the prime rate of
the Federal Reserve as determined at the time of issuance.  Loans are repaid
through payroll deductions on a bi-weekly basis over terms ranging from 1 to 10
years.  The loan balance has been shown net of reserves established for
delinquent loans.  Loans are determined to be delinquent if there has been no
repayment activity for ninety days.

The Company anticipates and fully intends that the Plan will be a permanent
program for the exclusive benefit of the participants and their beneficiaries.
The Company, however, reserves the right to terminate the Plan at any time such
action becomes necessary.    In the event the Plan is terminated, the net assets
will be allocated to participants as required by ERISA and its related
regulations.

NOTE C -- USE OF ESTIMATES

The preparation of the Plan's financial statements in conformity with generally
accepted accounting principles requires the Plan administrator to make
significant estimates and assumptions that affect the reported amounts of net
assets available for benefits at the date of the financial statements and the
changes in net assets available for benefits during the reporting period and,
when applicable, disclosures of contingent assets and liabilities at the date of
the financial statements.  Such estimates include those regarding fair value.
Actual results could differ from those estimates.

NOTE D -- RISKS AND UNCERTAINTIES

The Plan provides for various investment options in any combination of stocks,
bonds, fixed income securities, mutual funds, and other investment securities.
Investment securities are exposed to various risks, such as interest rate,
market, and credit risks.  Due to the level of risk associated with certain
investment securities it is at least reasonably possible that changes in the
values of investment securities will occur in the near term and that such
changes could materially affect participants' account balances and the amounts
reported in the statements of net assets available for benefits.

The Plan has no formal policy requiring collateral to support the financial
instruments held by Vanguard.  Each of the Vanguard funds is registered under
the Investment Act of 1940 as a diversified open-ended investment company.
Certain funds invest in corporate debt instruments.  The issuer's abilities to
meet these obligations may be affected by economic developments in their
respective industries.

NOTE E -- FEDERAL INCOME TAXES

On October 2, 1998, the Internal Revenue Service ruled that the Plan and related
trust qualified under Section 401(a) of the Internal Revenue Code.  Therefore,
earnings on contributions to the Plan are not subject to tax under present
income tax laws and employee contributions to the Plan are not subject to
Federal income tax to the employee until distribution from the Plan.  Management
believes that amendments adopted since receipt of the determination letter do
not effect the tax status of the Plan.

                                       7
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                             SECTION 401 (k) PLAN
                            SUPPLEMENTAL SCHEDULES

NOTE F -- RECONCILIATION OF FORM 5500

The following is a reconciliation of net assets available for benefits per the
financial statements to the form used to report Plan activity to the U.S.
Department of Labor (Form 5500).

<TABLE>
<CAPTION>
                                                                                             December 31,
                                                                               ---------------------------------------
                                                                                   1998                       1997
<S>                                                                            <C>                        <C>
Net assets available for benefits per the financial statements                 $134,863,206               $118,398,048

Amounts allocated to withdrawing participants                                      (645,500)                  (941,812)
                                                                               ------------               ------------

Net assets available for benefits per the Form 5500                            $134,217,706               $117,456,236
                                                                               ============               ============
</TABLE>

The following is a reconciliation of withdrawals per the financial statements to
benefits paid to participants per Form 5500.

<TABLE>
<CAPTION>
                                                                                       Year Ended December 31,
                                                                               ---------------------------------------
                                                                                   1998                       1997
<S>                                                                            <C>                         <C>
Benefits paid to participants per the financial statements                     $16,699,184                 $10,862,215

Add:     Amounts allocated to withdrawing participants for
         the current plan year                                                     645,500                     941,812


Less:    Amounts allocated to withdrawing participants for
         the prior plan year                                                      (941,812)                   (149,580)

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

Benefits paid to participants per Form 5500                                    $16,402,872                 $11,654,447
                                                                               ===========                 ===========
</TABLE>

Amounts allocated to withdrawing participants are recorded on the Form 5500 for
benefits claims that have been processed and approved for payment prior to
December 31 but not yet paid as of that date.

                                       8
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                             SECTION 401 (k) PLAN
                            SUPPLEMENTAL SCHEDULES


LINE 27a - SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES

As of December 31, 1998

<TABLE>
<CAPTION>
Identity of Issuer, Borrower, Lessor, or Similar                                                                 Current
 Party                                                    Number of Shares                Cost                    Value
                                                               or Units
- ---------------------------------------------------------------------------------------------------------------------------
<S>                                                     <C>                           <C>               <C>
Mutual Funds:

Vanguard 500 Index Fund *                                  356,479  shares             $22,334,099             $ 40,620,829
Vanguard Explorer Fund *                                    44,941  shares               2,395,949                2,548,622
Vanguard International Growth Fund *                       190,238  shares               3,188,871                3,570,769
Vanguard Long-Term Corporate Fund *                        867,773  shares               7,709,413                8,061,612
Vanguard Morgan Growth Fund *                            1,047,397  shares              15,983,537               20,654,666
Vanguard Prime Money Market Fund *                      17,686,040  shares              17,686,040               17,686,040
Vanguard PRIMECAP Fund *                                   128,078  shares               4,870,957                6,104,190
Vanguard Wellington Fund *                               1,088,558  shares              26,335,628               31,949,163
                                                                                                        ----------------------
Total Mutual Funds                                                                                              131,195,891

Pooled Funds:
ICF Kaiser Stock Fund *                                    124,676  units                  939,266                  599,690

Loans to participants * :
      Bearing interest ranging from 6% to 10%
      and maturing at various dates through
      December 2008                                                                              0                2,199,424
                                                                                                        ----------------------

Total Assets Held for Investment Purposes                                                                      $133,995,005
                                                                                                        ======================
</TABLE>

* Denotes a party in interest

                                       9
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                              SECTION 401(k) PLAN
                            SUPPLEMENTAL SCHEDULES

LINE 27b - SCHEDULE OF LOANS OR FIXED INCOME OBLIGATIONS
as of December 31, 1998


<TABLE>
<CAPTION>
                                          Amount received during
                                              reporting year
                                       -----------------------------
(a)        (b) Identity and address      (c) Original        (d)          (e)       (f) Unpaid balance
               (n/a) of obligor         amount of loan    Principal    Interest        at end of year
- ------------------------------------------------------------------------------------------------------
<S>     <C>                             <C>              <C>           <C>           <C>
        Abella, Milagros Apilado              n/a            n/a           n/a             $   477.30
        Adams, Ronald F                       n/a            n/a           n/a               3,592.39
        Adranly, Samar H                      n/a            n/a           n/a               6,386.39
        Baresel, Richard                      n/a            n/a           n/a               1,301.96
        Bateman, Jeffrey A                    n/a            n/a           n/a               6,134.83
        Blank, Logan M                        n/a            n/a           n/a               4,704.95
        Boag, Michael                         n/a            n/a           n/a                  36.85
        Bond, Tiffany K                       n/a            n/a           n/a                 996.66
        Bowen, Vicki                          n/a            n/a           n/a                 318.53
        Bravo, Dennis G                       n/a            n/a           n/a               4,036.27
        Brizzolara, Carolyn                   n/a            n/a           n/a                 918.85
        Bross, John F                         n/a            n/a           n/a               1,209.36
        Brown Jr, George F                    n/a            n/a           n/a              37,773.32
        Brush, Kathleen M                     n/a            n/a           n/a               7,896.46
        Brusher, John F                       n/a            n/a           n/a               6,302.73
        Buckley Criner, Cheryl                n/a            n/a           n/a               1,524.57
        Burruss Jr, Lincoln M                 n/a            n/a           n/a               1,885.46
        Cruz, Reynaldo A                      n/a            n/a           n/a               1,793.83
        Curley, Joseph M                      n/a            n/a           n/a                 678.67
        Daily, Alfred J                       n/a            n/a           n/a              23,689.94
        Davenport Jr. Russell S.              n/a            n/a           n/a               5,298.50
        Devens, Michael W                     n/a            n/a           n/a               4,720.44
        Ehrsam, Christina A                   n/a            n/a           n/a               1,901.78
        Ellegood, Michael S                   n/a            n/a           n/a              10,390.14
        Emminger, William J                   n/a            n/a           n/a                  82.57
        Ford, Gregory H                       n/a            n/a           n/a                 506.88
        George, Harold B                      n/a            n/a           n/a                 721.31
        Gibbs Jr, Henry B                     n/a            n/a           n/a               3,319.42
        Gibbs, David M                        n/a            n/a           n/a                 360.44
        Giddings, Edward F                    n/a            n/a           n/a                 502.50
        Goodman, Matthew                      n/a            n/a           n/a               2,079.49
        Graffam, Julia C                      n/a            n/a           n/a               3,385.60
        Graham, J. Gail                       n/a            n/a           n/a               7,535.82
        Haney, Susan B                        n/a            n/a           n/a                  35.00
        Hanusch, William J                    n/a            n/a           n/a               1,832.10
        Hathaway II, Alden M                  n/a            n/a           n/a               2,370.16
        Hayes, John A                         n/a            n/a           n/a               4,685.94
        Hogg, Mary Lee                        n/a            n/a           n/a               5,575.95
        Hopper Jr., William Brown             n/a            n/a           n/a               5,710.60
        Jackson, Beverly S                    n/a            n/a           n/a               1,200.37
        Jakobsche, Joseph C                   n/a            n/a           n/a               6,045.00
        Jaufmann, Josef                       n/a            n/a           n/a                 336.60
        Johnson, Darin P                      n/a            n/a           n/a               9,086.35
        Kaizer, Vaughn H                      n/a            n/a           n/a                 270.54
        Kemp, Harold Ray                      n/a            n/a           n/a                 637.11
        Kentner, Zeny Z                       n/a            n/a           n/a              14,998.14
        Kuzemka, Kevin Joseph                 n/a            n/a           n/a               1,317.38
        Larson, Mark A                        n/a            n/a           n/a               2,971.90
        Lewis, Deborah L                      n/a            n/a           n/a               7,879.88
        Lindelof, Douglas H                   n/a            n/a           n/a               1,443.13
        Luckoski, Stan M                      n/a            n/a           n/a               1,051.14
        Lydon, Nancy M                        n/a            n/a           n/a               3,816.68
        Maline, Alan J                        n/a            n/a           n/a                 891.53
        Mangum, Sylvia King                   n/a            n/a           n/a               4,055.29
        Mayberry, Lloyd                       n/a            n/a           n/a                 836.48
        McCann, Gerald P                      n/a            n/a           n/a               8,289.45
<CAPTION>
                                                                                       Amount overdue
                                                                                   ------------------------
                                 (g) Detailed description of loan, including            (h)         (i)
                                     dates of making and maturity, interest rate,    Principal    Interest
                                     the type and value of collateral, any
                                     renegotiation of the loan and the terms of
                                     the renegotiation and other material items
- -------------------------------------------------------------------------------------------------------------
        <S>                                     <C>                                  <C>           <C>
        Abella, Milagros Apilado                  Participant loan                     n/a           n/a
        Adams, Ronald F                           Participant loan                     n/a           n/a
        Adranly, Samar H                          Participant loan                     n/a           n/a
        Baresel, Richard                          Participant loan                     n/a           n/a
        Bateman, Jeffrey A                        Participant loan                     n/a           n/a
        Blank, Logan M                            Participant loan                     n/a           n/a
        Boag, Michael                             Participant loan                     n/a           n/a
        Bond, Tiffany K                           Participant loan                     n/a           n/a
        Bowen, Vicki                              Participant loan                     n/a           n/a
        Bravo, Dennis G                           Participant loan                     n/a           n/a
        Brizzolara, Carolyn                       Participant loan                     n/a           n/a
        Bross, John F                             Participant loan                     n/a           n/a
        Brown Jr, George F                        Participant loan                     n/a           n/a
        Brush, Kathleen M                         Participant loan                     n/a           n/a
        Brusher, John F                           Participant loan                     n/a           n/a
        Buckley Criner, Cheryl                    Participant loan                     n/a           n/a
        Burruss Jr, Lincoln M                     Participant loan                     n/a           n/a
        Cruz, Reynaldo A                          Participant loan                     n/a           n/a
        Curley, Joseph M                          Participant loan                     n/a           n/a
        Daily, Alfred J                           Participant loan                     n/a           n/a
        Davenport Jr. Russell S.                  Participant loan                     n/a           n/a
        Devens, Michael W                         Participant loan                     n/a           n/a
        Ehrsam, Christina A                       Participant loan                     n/a           n/a
        Ellegood, Michael S                       Participant loan                     n/a           n/a
        Emminger, William J                       Participant loan                     n/a           n/a
        Ford, Gregory H                           Participant loan                     n/a           n/a
        George, Harold B                          Participant loan                     n/a           n/a
        Gibbs Jr, Henry B                         Participant loan                     n/a           n/a
        Gibbs, David M                            Participant loan                     n/a           n/a
        Giddings, Edward F                        Participant loan                     n/a           n/a
        Goodman, Matthew                          Participant loan                     n/a           n/a
        Graffam, Julia C                          Participant loan                     n/a           n/a
        Graham, J. Gail                           Participant loan                     n/a           n/a
        Haney, Susan B                            Participant loan                     n/a           n/a
        Hanusch, William J                        Participant loan                     n/a           n/a
        Hathaway II, Alden M                      Participant loan                     n/a           n/a
        Hayes, John A                             Participant loan                     n/a           n/a
        Hogg, Mary Lee                            Participant loan                     n/a           n/a
        Hopper Jr., William Brown                 Participant loan                     n/a           n/a
        Jackson, Beverly S                        Participant loan                     n/a           n/a
        Jakobsche, Joseph C                       Participant loan                     n/a           n/a
        Jaufmann, Josef                           Participant loan                     n/a           n/a
        Johnson, Darin P                          Participant loan                     n/a           n/a
        Kaizer, Vaughn H                          Participant loan                     n/a           n/a
        Kemp, Harold Ray                          Participant loan                     n/a           n/a
        Kentner, Zeny Z                           Participant loan                     n/a           n/a
        Kuzemka, Kevin Joseph                     Participant loan                     n/a           n/a
        Larson, Mark A                            Participant loan                     n/a           n/a
        Lewis, Deborah L                          Participant loan                     n/a           n/a
        Lindelof, Douglas H                       Participant loan                     n/a           n/a
        Luckoski, Stan M                          Participant loan                     n/a           n/a
        Lydon, Nancy M                            Participant loan                     n/a           n/a
        Maline, Alan J                            Participant loan                     n/a           n/a
        Mangum, Sylvia King                       Participant loan                     n/a           n/a
        Mayberry, Lloyd                           Participant loan                     n/a           n/a
        McCann, Gerald P                          Participant loan                     n/a           n/a
</TABLE>

n/a - Information is not available from The Vanguard Group, trustee


                                       10
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                              SECTION 401(k) PLAN
                            SUPPLEMENTAL SCHEDULES

LINE 27b - SCHEDULE OF LOANS OR FIXED INCOME OBLIGATIONS
as of December 31, 1998

<TABLE>
<CAPTION>
                                          Amount received during
                                              reporting year
                                       -----------------------------
(a)        (b) Identity and address      (c) Original        (d)          (e)       (f) Unpaid balance
               (n/a) of obligor         amount of loan    Principal    Interest        at end of year
- ------------------------------------------------------------------------------------------------------
<S>     <C>                             <C>              <C>           <C>           <C>
        McCann, Young Su                      n/a            n/a           n/a             $   582.97
        McGee, Willie S                       n/a            n/a           n/a               5,705.00
        McKibben, Fran G                      n/a            n/a           n/a                 464.38
        Meyer, Chris R                        n/a            n/a           n/a               1,909.18
        Miegel, Ralph C                       n/a            n/a           n/a               4,458.78
        Miller, Janie S                       n/a            n/a           n/a               9,062.29
        Milner, Lindy                         n/a            n/a           n/a               4,590.40
        Nemati, Kamran M                      n/a            n/a           n/a               7,226.53
        Oliver, Bruce E                       n/a            n/a           n/a               7,433.87
        Page, Anthony W                       n/a            n/a           n/a                 675.19
        Pennetti, George J                    n/a            n/a           n/a               2,810.50
        Perez Jr, Eduardo                     n/a            n/a           n/a               1,366.15
        Peterson, Arthur H                    n/a            n/a           n/a               9,261.21
        Plotkin, Debra R                      n/a            n/a           n/a                 900.00
        Prol, Howard K                        n/a            n/a           n/a               1,583.72
        Purchacchio, Robert L                 n/a            n/a           n/a                  72.01
        Ramos, Karen Silva                    n/a            n/a           n/a                 944.07
        Randrianarivelo, Marc H               n/a            n/a           n/a               6,726.37
        Reece, Christopher                    n/a            n/a           n/a               6,268.46
        Richardella, robert E                 n/a            n/a           n/a               6,093.26
        Rose, Roger M                         n/a            n/a           n/a                 889.66
        Sannareddy, Ravindra                  n/a            n/a           n/a               2,632.04
        Sato, May Wong                        n/a            n/a           n/a              11,084.35
        Scanlan, Richard W                    n/a            n/a           n/a              11,221.30
        Shin, Harry                           n/a            n/a           n/a                  88.87
        Simmer, Mary Ann                      n/a            n/a           n/a                 151.83
        Singn, Ravinder                       n/a            n/a           n/a               1,794.85
        Skinner Jr, Henry R                   n/a            n/a           n/a                 383.75
        Soto-Rosa, Gustavo J                  n/a            n/a           n/a               4,227.67
        Strickland, Mark F                    n/a            n/a           n/a               1,118.37
        Taylor, Eric D                        n/a            n/a           n/a               2,381.70
        Toloczko, Matthew A                   n/a            n/a           n/a               7,535.20
        Trudell, Craig J                      n/a            n/a           n/a               2,986.27
        Valdes, Vincent                       n/a            n/a           n/a              16,726.31
        Vitiello, Terese A                    n/a            n/a           n/a               4,782.44
        Weber, George R                       n/a            n/a           n/a               1,790.42
        White, Tony L                         n/a            n/a           n/a               2,775.62
        Whitford, Charles L                   n/a            n/a           n/a                  41.83
        Williams, Timek N                     n/a            n/a           n/a                 819.29
<CAPTION>
                                                                                       Amount overdue
                                                                                   ------------------------
                                 (g) Detailed description of loan, including            (h)         (i)
                                     dates of making and maturity, interest rate,    Principal    Interest
                                     the type and value of collateral, any
                                     renegotiation of the loan and the terms of
                                     the renegotiation and other material items
- -------------------------------------------------------------------------------------------------------------
        <S>                                     <C>                                  <C>           <C>
        McCann, Young Su                          Participant loan                     n/a           n/a
        McGee, Willie S                           Participant loan                     n/a           n/a
        McKibben, Fran G                          Participant loan                     n/a           n/a
        Meyer, Chris R                            Participant loan                     n/a           n/a
        Miegel, Ralph C                           Participant loan                     n/a           n/a
        Miller, Janie S                           Participant loan                     n/a           n/a
        Milner, Lindy                             Participant loan                     n/a           n/a
        Nemati, Kamran M                          Participant loan                     n/a           n/a
        Oliver, Bruce E                           Participant loan                     n/a           n/a
        Page, Anthony W                           Participant loan                     n/a           n/a
        Pennetti, George J                        Participant loan                     n/a           n/a
        Perez Jr, Eduardo                         Participant loan                     n/a           n/a
        Peterson, Arthur H                        Participant loan                     n/a           n/a
        Plotkin, Debra R                          Participant loan                     n/a           n/a
        Prol, Howard K                            Participant loan                     n/a           n/a
        Purchacchio, Robert L                     Participant loan                     n/a           n/a
        Ramos, Karen Silva                        Participant loan                     n/a           n/a
        Randrianarivelo, Marc H                   Participant loan                     n/a           n/a
        Reece, Christopher                        Participant loan                     n/a           n/a
        Richardella, robert E                     Participant loan                     n/a           n/a
        Rose, Roger M                             Participant loan                     n/a           n/a
        Sannareddy, Ravindra                      Participant loan                     n/a           n/a
        Sato, May Wong                            Participant loan                     n/a           n/a
        Scanlan, Richard W                        Participant loan                     n/a           n/a
        Shin, Harry                               Participant loan                     n/a           n/a
        Simmer, Mary Ann                          Participant loan                     n/a           n/a
        Singn, Ravinder                           Participant loan                     n/a           n/a
        Skinner Jr, Henry R                       Participant loan                     n/a           n/a
        Soto-Rosa, Gustavo J                      Participant loan                     n/a           n/a
        Strickland, Mark F                        Participant loan                     n/a           n/a
        Taylor, Eric D                            Participant loan                     n/a           n/a
        Toloczko, Matthew A                       Participant loan                     n/a           n/a
        Trudell, Craig J                          Participant loan                     n/a           n/a
        Valdes, Vincent                           Participant loan                     n/a           n/a
        Vitiello, Terese A                        Participant loan                     n/a           n/a
        Weber, George R                           Participant loan                     n/a           n/a
        White, Tony L                             Participant loan                     n/a           n/a
        Whitford, Charles L                       Participant loan                     n/a           n/a
        Williams, Timek N                         Participant loan                     n/a           n/a
</TABLE>

n/a - Information is not available from The Vanguard Group, trustee

                                       11
<PAGE>

                        ICF KAISER INTERNATIONAL, INC.
                             SECTION 401 (k) PLAN

ITEM 27d - SCHEDULE OF REPORTABLE TRANSACTIONS
for the year ended December 31, 1998

Plan assets at January 1, 1998 -- $ 118,398,048
5% -- $ 5,919,902


I.             Single transactions in excess of 5%:
               None.

II.            Series of transactions with respect to any person other than
               securities in excess of 5%:
               None.

III.           Series of transactions with respect to securities of the same
               issue in excess of 5%:

<TABLE>
<CAPTION>
====================================================================================================================================
                                                           Number of Transactions
                                                                                         Purchase         Selling
Identity of Issuer       Description of Asset               Purchases      Sales          Price            Price          Cost
- ---------------------------------------------------------------------------------------------------------------------------------
<S>
The Vanguard Group       Vanguard 500 Index Trust              182                      $8,790,481
The Vanguard Group       Vanguard 500 Index Trust                           172                          $8,656,919    $5,877,962
The Vanguard Group       Vanguard Prime Money Market Fund      209                       9,314,059
The Vanguard Group       Vanguard Prime Money Market Fund                   173                           7,746,655     7,746,655
The Vanguard Group       Vanguard Wellington Fund              145                       7,341,310
The Vanguard Group       Vanguard Wellington Fund                           173                           6,874,426     5,245,887
=================================================================================================================================

<CAPTION>

====================================================================================================================================

                                                                 Current                  Net
Identity of Issuer       Description of Asset                     Value              Gain/(Loss)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                      <C>                                  <C>                   <C>
The Vanguard Group       Vanguard 500 Index Trust             $8,790,481
The Vanguard Group       Vanguard 500 Index Trust              8,656,919            $2,778,957
The Vanguard Group       Vanguard Prime Money Market Fund      9,314,059
The Vanguard Group       Vanguard Prime Money Market Fund      7,746,655                     -
The Vanguard Group       Vanguard Wellington Fund              7,341,310
The Vanguard Group       Vanguard Wellington Fund              6,874,426             1,628,539

====================================================================================================================================
</TABLE>


IV.            Transactions with respect to securities with a person if any
               prior or subsequent transaction with such person exceeded 5%:
               None.

                                       12
<PAGE>

Exhibit   Description of Exhibit
- -------   ----------------------


No. 23    Consent of PricewaterhouseCoopers LLP (the Plan's Independent
          Accountants)


No. 99    ICF Kaiser International, Inc. Section 401(k) Plan (as amended and
          restated as of March 1, 1993) (and further amended with respect to
          name change only as of June 26, 1993) (incorporated by reference to
          Exhibit No. 10(f) to Quarterly Report on Form 10-Q (Registrant No.
          1-12248) for the second quarter of fiscal 1994 filed with the
          Commission on October 15, 1993)

          and

          Amendment No. 1 dated April 24, 1995 (incorporated by reference to
          Exhibit 10(p)(1) to Annual Report on Form 10-K (Registrant No.
          1-12248) fiscal 1995 filed with the Commission on May 23, 1995)

          and

          Amendment No. 2 dated December 15, 1995 (incorporated by reference to
          Exhibit 10(p)(2) to Transition Report on Form 10-K (Registrant No.
          1-12248) for the ten months ended December 31, 1995 filed with the
          Commission on March 29, 1996)

          and

          Amendment No. 3 dated December 13, 1996 (incorporated by reference to
          Exhibit 10(q)(3) to Registration Statement on Form S-1 (Registrant No.
          333-19519) filed with the Commission on January 10, 1997)

          and

          Amendment No. 4 dated April 19, 1999

          and

          Amendment No. 5 dated May 20, 1999



                                  SIGNATURES



Pursuant to the requirements of the Securities Exchange Act of 1934, the
trustees (or other persons who administer the employee benefit plan) have duly
caused this annual report to be signed on its behalf by the undersigned hereunto
duly authorized.



                             ICF Kaiser International, Inc. Section 401(k) Plan
                             ICF Kaiser International, Inc.
                             Plan Administrator



                             By: ______________________________________________

                             Marijo L. Ahlgrimm
                             Vice President & Controller



Date :  June 28, 1999

                                       13

<PAGE>

                                                                  Exhibit No. 23


                      CONSENT OF INDEPENDENT ACCOUNTANTS


ICF Kaiser International, Inc. 401(k) Plan Committee
Fairfax, Virginia


We hereby consent to the incorporation by reference in the Registration
Statement on Form S-8 (No. 33-51460) of ICF Kaiser International, Inc. of our
report dated June 28, 1999 relating to the financial statements, which appears
in this Form 11-K.


                                                      PricewaterhouseCoopers LLP


McLean, Virginia
June 28, 1999




<PAGE>

                                                                  Exhibit No. 99


                               FOURTH AMENDMENT
                                    TO THE
                        ICF KAISER INTERNATIONAL, INC.
                              SECTION 401(K) PLAN



         WHEREAS, the ICF Kaiser International, Inc. Section 401(k) Plan
(hereinafter referred to as the "Plan") was established effective as of March 1,
1989, by ICF Kaiser International, Inc. (hereinafter referred to as the
"Company"); and

         WHEREAS, the Plan was most recently restated as of January 1, 1998; and

         WHEREAS, the restated Plan was amended subsequently on three
occasions; and

         WHEREAS, the Company desires to amend the Plan again to comply with
recent tax legislation, to reflect various administrative changes, and to
accommodate certain divestitures;

         NOW, THEREFORE, effective as of April 7, 1999, unless specifically
provided otherwise, the Plan is hereby amended in the respects hereinafter set
forth.

         1.    Section 1.6 of the Plan is hereby amended to provide as follows:

               1.6 "Closing" shall mean the consummation of a transaction in
               which the Company disposes of (i) substantially all of the
               assets used by the Company in a trade or business of the
               Company, or (ii) the Company's interest in a subsidiary.

         2.    The last sentence of the second paragraph of Section 1.9 of the
Plan is hereby deleted effective as of January 1, 1997.

         3.    Paragraph (e) of Section 1.12 of the Plan is hereby amended
effective January 1, 1997, to provide as follows:

                       (e) a leased employee who pursuant to Section 414(n)(2)
               of the Code means any person (other than a person who is an
               employee without regard to this Paragraph (e)) engaged in
               performing services for a Member of the Controlled Group (the
               "recipient") pursuant to an agreement between the recipient
               and any other person ("Leasing Organization") who meets the
               following requirements:

                            (i) he has performed services for one or more
                       Members of the Controlled Group (or for any other
                       "related persons" determined in accordance with Section
                       414(n)(6) of the Code) on a substantially full-time basis
                       for a period of at least one year;

                                    EX99-1
<PAGE>

                            (ii) such services are under the primary direction
                       or control of the recipient; and

                            (iii) he is not participating in a "safe harbor
                       plan" of the Leasing Organization. (For this purpose a
                       "safe harbor plan" is a plan that satisfies the
                       requirements of Section 414(n)(5) of the Code, which will
                       generally be a money purchase pension plan with a
                       nonintegrated company contribution rate of at least 10%
                       of compensation and which provides for immediate
                       participation and full and immediate vesting).

               A person who is a leased employee shall also be considered an
               employee of a Member of the Controlled Group during such
               period (and solely for the purpose of determining length of
               service for vesting purposes, and shall also be considered to
               have been an employee for any earlier period in which he was a
               leased employee) but shall not be a Participant and shall not
               otherwise be eligible to become covered by the Plan during any
               period in which he is a leased employee. Notwithstanding the
               foregoing, the sole purpose of this Paragraph (e) is to define
               and apply the term "leased employee" strictly (and only) to
               the extent necessary to satisfy the minimum requirements of
               Section 414(n) of the Code relating to "leased employees.

         4.    Section 1.18 of the Plan is hereby amended effective January 1,
1997, to provide as follows:

               1.18     [Reserved]

         5.    Section 1.20 of the Plan is hereby amended effective January 1,
1997, to provide as follows:

               1.20 "Highly-Compensated Employee" shall mean any Employee of
               the Company or a Member of a Controlled Group for a Plan Year
               who:

                       (a) during the immediately preceding Plan Year, received
               compensation (as defined in Section 4.3(b)(ii) of the Plan
               without regard to Sections 125, 402(e)(3) and 402(h)(1)(B) of the
               Code) in excess of $80,000 (such dollar limitation shall be
               adjusted automatically in accordance with the maximum amount
               permitted under Section 414(q) of the Code); or

                       (b) during such Plan Year or during the immediately
               preceding Plan Year owned directly or indirectly 5% or more of
               the Company or a Member of a Controlled Group (so that he is a
               "5% owner" as defined in Section 416(i)(1) of the Code);

               A former Employee shall be treated as a Highly Compensated
               Employee if such Employee was a Highly Compensated Employee
               when such Employee separated from service or such Employee was
               a Highly Compensated Employee at any time after attaining age
               55. Notwithstanding the foregoing provisions of this
               paragraph, the sole purpose of this Section 1.17 is to define
               and apply the term Highly-Compensated Employee strictly (and
               only) to the extent necessary to satisfy the minimum
               requirements of Section 414(q) of the Code

                                    EX99-2
<PAGE>

               relating to "highly-compensated employees." This Section 1.17
               shall be interpreted, applied and, if and to the extent
               necessary, deemed modified without formal amendments of language,
               so as to satisfy solely the minimum requirements of Section
               414(q) of the Code.

         6.    Section 1.26 of the Plan is hereby amended effective January 1,
1997, to provide as follows:

               1.26 "Non-Highly Compensated Participant" shall mean any
               Participant who is not a Highly Compensated Participant.

         7.    Section 1.38 of the Plan is hereby amended effective January 1,
1997, to provide as follows:

               1.38     [Reserved]

         8.    Section 2.5 of the Plan is hereby amended to provide as follows:

               2.5 Qualified Military Service and Compliance with Uniformed
                   --------------------------------------------------------
               Services Employment and Reemployment Rights Act.
               -----------------------------------------------
               Notwithstanding any provision of the Plan to the contrary,
               effective as of December 12, 1994, contributions, benefits,
               and service credit with respect to Qualified Military Service
               shall be provided in accordance with Section 414(u) of the
               Code.

         9.    Article II of the Plan is hereby amended by the addition of
Section 2.6 at the end thereof to provide as follows:

               2.6 Cessation of Coverage of Certain Participants. Effective
                   ---------------------------------------------
               as of the date of the Closing with respect to the sale of the
               Environment and Facilities Management Group ("EFM Group") of
               the Company to The IT Group, Inc., coverage under the Plan
               shall be closed to any individual employed by, or at a
               facility of, the EFM Group and effective as of the date of the
               Closing with respect to the sale of the stock of ICF
               Consulting Group, Inc. ("ICF Consulting Group") to CM Equity
               Partners, L.P., CMEP Coinvestment ICF, L.P. and various
               individuals, coverage under the Plan shall be closed to any
               individual employed by, or at a facility of, ICF Consulting
               Group.

         10.   Section 4.4 is hereby amended effective January 1, 1998, to
provide as follows:

               4.4  Limitation on Benefits.
                    ----------------------

                       (a) Incorporation of Section 415 of the Code. The
                           ----------------------------------------
               provisions set forth in this Section 4.4 are intended solely
               to comply with the requirements of Section 415 of the Code and
               shall be interpreted, applied, and if and to the extent
               necessary deemed modified without further formal language so
               as to satisfy solely the minimum requirements of said Section.
               For such purposes, the

                                    EX99-3
<PAGE>

               limitations of Section 415 of the Code are hereby incorporated by
               reference and made part hereof as though fully set forth herein,
               but shall be applied only to particular Plan benefits in
               accordance with the provisions of this Section 4.4, to the extent
               such provisions are not consistent with said Section 415. The
               limitations contained in this Section 4.4 shall be applicable
               only with respect to benefits provided pursuant to defined
               contribution plans and defined benefit plans specified in Section
               415(k) of the Code.

                       (b) Definitions. For purposes of this Section 4.4,
                           -----------
               the following definitions shall apply in addition to those set
               forth in Article I:

                            (i) The term "Annual Additions" shall mean
                       the amount defined in Section 415 (c)(2) of the Code.

                            (ii) The term "Annual Benefit" shall mean
                       the benefit amount defined in Section 415(b)(2)(A) of
                       the Code as adjusted pursuant to the provisions of
                       Section 415(b)(2)(B), (C), (D), and (E) of the Code.

                            (iii) The term "Compensation" shall mean
                       compensation as defined in Section 415(c)(3) of the
                       Code.

                            (iv) The term "Defined Benefit Fraction" for
                       any Limitation Year beginning prior to January 1,
                       2000, shall mean the fraction defined in Section
                       415(e)(2) of the Code.

                            (v) The term "Defined Contribution Fraction"
                       for any Limitation Year beginning prior to January 1,
                       2000, shall mean the fraction defined in Section
                       415(e)(3) of the Code.

                            (vi) The term "Employer" shall mean the
                       Company and all Members of a Controlled Group;
                       provided, however, that for purposes of applying the
                       limitations of this Section 4.4 with respect to
                       Limitation Years after December 31, 1999, "50
                       percent" rather than "80 percent" shall be used in
                       determining Member of a Controlled Group defined
                       under Section 414(b) and Section 414(c) of the Code.

                            (vii) The term "Excess Amount" shall mean
                       the excess of the Participant's Annual Additions for
                       a Limitation Year over the Defined Contribution
                       Maximum Permissible Amount.

                            (viii) The term "Highest Average
                       Compensation" shall mean the average Compensation for
                       the three consecutive calendar years during which the
                       Participant was an active Participant in the Plan and
                       had the greatest aggregate Compensation from the
                       Employer.

                                    EX99-4
<PAGE>

                            (ix) The term "Limitation Year" shall mean a
                       calendar year or such other 12-month period elected
                       by the Company pursuant to regulations and rulings
                       under Section 415 of the Code.

                            (x) The term "Defined Contribution Maximum
                       Permissible Amount" shall mean Annual Additions of a
                       Participant which do not exceed the lesser of (i)
                       $30,000 (adjusted in accordance with regulations
                       prescribed by the Secretary of the Treasury for
                       increases in the cost of living), or (ii) 25 percent
                       of such Participant's Compensation paid for such
                       Limitation Year as set forth in Section 415(e)(1) of
                       the Code. If a short Limitation Year is created
                       because of an amendment changing the Limitation Year
                       to a different 12-month consecutive period, such
                       Annual Additions shall not exceed $30,000 multiplied
                       by a fraction, the numerator of which is the number
                       of months in the short Limitation Year and the
                       denominator of which is 12.

                            (xi) The term "Defined Benefit Maximum
                       Permissible Amount" shall mean the Annual Benefit of
                       a Participant which does not exceed the lesser of
                       $90,000 or 100 percent of the Participant's Highest
                       Average Compensation as set forth in Section
                       415(b)(1) of the Code.

                            (xii) The term "Projected Annual Benefit"
                       shall mean the annual retirement benefit of a
                       Participant attributable to Employer contributions
                       which would be payable to such Participant under a
                       plan based on the assumptions that he continues his
                       employment as a Participant until the Social Security
                       Retirement Age and that his Compensation for the
                       Limitation Year continues at the same rate until the
                       Social Security Retirement Age, and on the basis of
                       the federal Social Security Act as in effect on the
                       last day of the Limitation Year. A Participant's
                       "aggregate Projected Annual Retirement Benefit" shall
                       include his Projected Annual Benefit, if any, under
                       any other defined benefit plan maintained by the
                       Employer.

                            (xiii) The term "Social Security Retirement
                       Age" shall mean the age used as the retirement age
                       under Section 216(l) of the federal Social Security
                       Act, without regard to any age increase factor and as
                       if the early retirement age under Section 216(l)(2)
                       were 62.

                       (c) Limitations on Allocations Under the Plan.
                           -----------------------------------------
               Notwithstanding any other provision of the Plan to the
               contrary, the amount of Annual Additions which may be credited
               to the Participant's Account for any Limitation Year shall not
               exceed the lesser of the Defined Contribution Maximum
               Permissible Amount or any other limitation contained in the
               Plan. If the Annual Additions to the Account of a Participant
               in any Limitation Year would otherwise

                                    EX99-5
<PAGE>

               exceed such amount, the Excess Amount shall be disposed of by
               reducing the Salary Deferrals of a Participant and
               corresponding matching Employer contributions and forfeitures
               otherwise allocable to the Participant's Account for the
               Limitation Year. Amounts deemed to be forfeitures under this
               Paragraph (c) shall be held unallocated in a suspense account
               established for the Limitation Year and shall be applied
               against the Employer's contribution obligation for the next
               following Limitation year (and succeeding Limitation Years, as
               necessary). If a suspense account is in existence at any time
               during a Limitation Year, all amounts in the suspense account
               must be allocated to Participants' Accounts (subject to the
               limitations set for in this Section 4.4 ) before any further
               Employer contributions may be made to the Plan on behalf of
               Participants. If a suspense account is in existence at any
               time during a Limitation Year pursuant to this Section 4.4, it
               will not participate in the allocation of the investment gains
               and losses on the Plan's assets.

                       (d) Limitation for Multiple Defined Contribution Plan
                           -------------------------------------------------
               Participation. If a Participant is covered by any other
               -------------
               qualified defined contribution plan (whether or not
               terminated) maintained by the Employer concurrently with the
               Plan, and if the Annual Additions for the Limitation Year
               would otherwise exceed the amount that may be applied for the
               Participant's benefit under the limitation contained in
               Section 4.4(c), such excess shall be reduced by first
               returning any employer contributions made with respect to the
               Participant under an employee stock ownership plan and then by
               returning the Salary Deferrals made on behalf of the
               Participant for the Limitation Year under this Plan and
               corresponding matching Employer contributions and the income
               attributable thereto as provided in Section 4.4(c). If the
               limitation contained in Section 4.4(c) is still not satisfied
               after returning all of such contributions, then the Employer
               contributions and forfeitures for the Limitation Year under
               any other plans that have been contributions and forfeitures
               for the Limitation Year under such other plans that have been
               allocated to the Participant shall be reduced and disposed of
               as provided in any such other plans.

                       (e) Limitation for Defined Benefit Plan
                           -----------------------------------
               Participation. For Limitation Years beginning prior to January
               -------------
               1, 2000, if a Participant in the Plan is also covered by a
               qualified defined benefit plan (whether or not terminated)
               maintained by the Employer, in no event shall the sum of the
               Defined Benefit Fraction and the Defined Contribution Fraction
               exceed 1.0 in any Limitation Year.

                       (f) Scope of Limitations. The limitations contained
                           --------------------
               in Paragraphs (c), (d), and (e) of this Section 4.4 shall be
               applicable only with respect to benefits provided pursuant to
               defined contribution plans and defined benefit plans described
               in Section 415(k) of the Code and all such defined
               contribution plans (whether or not terminated) of the Employer
               shall be treated as one defined contribution plan and all such

                                    EX99-6
<PAGE>

               defined benefit plans (whether or not terminated) of the
               Employer shall be treated as one defined benefit plan.

         11.   Sections 4.5 and 4.6 of the Plan are hereby deleted effective
January 1, 1998, in their entirety.

         12.   Article V of the Plan is hereby amended effective January 1,
1998, to provide as follows:

                                   ARTICLE V

                             TOP-HEAVY PROVISIONS
                             --------------------

               5.1  Applicability. Notwithstanding any other provision to the
                    -------------
               contrary, in the event the Plan is deemed to be a top-heavy
               plan for any Plan Year, the provisions contained in this
               Article V with respect to vesting and contributions made by
               the Employer shall be applicable with respect to such Plan
               Year. In the event that the Plan is determined to be a
               top-heavy plan and upon a subsequent determination date is
               determined to no longer be a top-heavy plan, the vesting and
               the contribution provisions in effect immediately preceding
               the Plan Year in which the Plan was determined to be a
               top-heavy plan shall again become applicable as of such
               subsequent determination date.

               5.2  Top-Heavy Definitions.  Notwithstanding the definitions
                    ---------------------
               set forth in Article I, the following definitions shall be
               applicable to this Article V.

                       (a)   The term "Compensation" shall have the meaning
                                       ------------
               set forth in Treas. Reg. Section 1.415-2(d).

                       (b) The term "Determination Date" shall mean for any
                                     ------------------
               Plan Year subsequent to the first Plan Year, the last day of
               the preceding Plan Year and for the first Plan Year of the
               Plan, the last day of that Plan Year.

                       (c) The term "Employer" shall mean the Company and
                                     --------
               all Members of a Controlled Group.

                       (d) The term "Key Employee" shall mean any Employee
                                     ------------
               or former Employee (and the beneficiaries of such Employer)
               who at any time during the Plan Year and any of the four
               preceding Plan Years was an officer of the Employer with
               annual compensation greater than 50 percent of the dollar
               limitation under Section 415(b)(1)(A) of the Code, an owner
               (or considered an owner) under Section 318 of the Code) of one
               of the ten largest interests in the Employer with compensation
               greater than 100 percent of the limitation under Section
               415(b)(1)(A) of the Code, a 5 percent owner of the Employer,
               or a 1 percent owner of the Employer with annual compensation
               of more than $150,000.

                                    EX99-7
<PAGE>

                       (e) The term "Permissive Aggregation Group" shall
                                     ----------------------------
               mean the Required Aggregation Group of plans plus any other
               plan or plans of the Employer which, when considered as a
               group with the Required Aggregation Group, would continue to
               satisfy the requirements of Section 401(a)(4) and 410 of the
               Code.

                       (f) The term "Present Value" shall mean for purposes
                                     -------------
               of computing present value calculations in determining the
               Top-Heavy Ratio, present value calculations based on the
               actuarial assumptions as stated in the applicable plan.

                       (g) The term "Required Aggregation Group" shall mean
                                     --------------------------
               (a) each tax qualified plan of the Employer in which at least
               one Key Employee participates or participated at any time
               during the determination period (regardless of whether the
               plan terminated), and (b) any other tax qualified plan of the
               Employer which enables a plan described in clause (a) to meet
               the requirements of Section 401(a)(4) or 410 of the Code.

                       (h) The term "Super Top-Heavy Group" with respect to
                                     ---------------------
               a particular Plan Year shall mean a Required or Permissive
               Aggregation Group that, as of the Determination Date, would
               qualify as a Top-Heavy Group under the definition in Paragraph
               (j) of this Section 5.2 with "90 percent" substituted for "60
               percent" each place where "60 percent" appears in such
               definition.

                       (i) The term "Super Top-Heavy Plan" with respect to a
                                     --------------------
               particular Plan Year shall mean a plan that, as of the
               Determination Date, would qualify as a Top-Heavy Plan under
               the definition in Paragraph (k) of this Section 5.2 with "90
               percent" substituted for "60 percent" each place where "60
               percent" appears in such definition. A plan is also a "Super
               Top-Heavy Plan" if it is part of a Super Top-Heavy Group.

                       (j) The term "Top-Heavy Group" with respect to a
                                     ---------------
               particular Plan Year shall mean a Required or Permissive
               Aggregation Group if the sum, as of the Determination Date, of
               the present value of the cumulative accrued benefits for Key
               Employees under all defined benefit plans included in such
               group and the aggregate of the account balances of Key
               Employees under all defined contribution plans included in
               such group exceeds 60 percent of a similar sum determined for
               all employees covered by the plans included in such group.

                       (k) The term "Top-Heavy Plan" with respect to a
                                     --------------
               particular Plan Year shall mean the Plan if any of the
               following conditions exist:

                            (i) If the Top-Heavy Ratio for the Plan
                       exceeds 60 percent and the Plan is not part of any
                       Required Aggregation Group or Permissive Aggregation
                       Group of plans.

                                    EX99-8
<PAGE>

                            (ii) If the Plan is a part of a Required
                       Aggregation Group of plans but not part of a
                       Permissive Aggregation Group and the Top-Heavy Ratio
                       for the group of plans exceeds 60 percent.

                            (iii) If the Plan is a part of a Required
                       Aggregation Group and part of a Permissive
                       Aggregation Group of plans and the Top-Heavy Ratio
                       for the Permissive Aggregation Group exceeds 60
                       percent.

                       (l) The term "Top-Heavy Ratio" shall mean:
                                     ---------------
                            (i) While the Employer maintains one or more
                       defined contribution plans (including any simplified
                       employee pension plan) and the Employer has not
                       maintained any defined benefit plan which during the
                       5-year period ending on the Determination Date has or
                       has had accrued benefits, the Top-Heavy Ratio for the
                       Plan alone or for the Required or Permissive
                       Aggregation Group, as appropriate, is a fraction, the
                       numerator of which is the sum of the account balances
                       of all Key Employees as of the Determination Date
                       (including any part of any account balance
                       distributed in the five-year period ending on the
                       Determination Date), and the denominator of which is
                       the sum of all account balances (including any part
                       of any account balance distributed in the five-year
                       period ending on the Determination Date), both
                       computed in accordance with Section 416 of the Code.
                       Both the numerator and denominator of the Top-Heavy
                       Ratio are adjusted to reflect any contribution not
                       actually made as of the Determination Date, but which
                       is required to be taken into account on that date
                       under Section 416 of the Code.

                            (ii) While the Employer maintains one or
                       more defined contribution plans (including any
                       simplified employee pension plans) and the Employer
                       maintains or has maintained one or more defined
                       benefit plans which during the five-year period
                       ending on the Determination Date has or has had any
                       accrued benefits, the Top-Heavy Ratio for any
                       Required or Permissive Aggregation Group as
                       appropriate is a fraction, the numerator of which is
                       the sum of account balances under the aggregated
                       defined contribution plan or plans for all Key
                       Employees, determined in accordance with subparagraph
                       (i) above, and the present value of accrued benefits
                       under the aggregated defined benefit plan or plans
                       for all Key Employees as of the Determination Date,
                       and the denominator of which is the sum of the
                       account balances under the aggregated defined
                       contribution plan or plans for all participants,
                       determined in accordance with subparagraph (i) above,
                       and the present value of accrued benefits under the
                       defined benefit plan or plans for all participants as
                       of the Determination Date, all determined in
                       accordance with Section 416 of the Code. The accrued
                       benefits under a defined

                                    EX99-9

<PAGE>

                       benefit plan in both the numerator and denominator of the
                       Top-Heavy Ratio are adjusted for any distribution of an
                       accrued benefit made in the five-year period ending on
                       the Determination Date.

                            (iii) For purposes of subparagraphs (i) and
                       (ii) above, the value of account balances and the
                       present value of accrued benefits shall be determined
                       as of the most recent valuation date that falls
                       within or ends with the 12-month period ending on the
                       Determination Date, except as provided in Section 416
                       of the Code for the first and second plan years of a
                       defined benefit plan. The account balances and
                       accrued benefits of a participant (1) who is not a
                       Key Employee but who was a Key Employee in a prior
                       year, or (2) who has not performed services for the
                       Employer maintaining the Plan at any time during the
                       5-year period ending on the Determination Date will
                       be disregarded. The calculation of the Top-Heavy
                       Ratio, and the extent to which distributions,
                       rollovers and transfers are taken into account will
                       be made in accordance with Section 416 of the Code.
                       Deductible employee contributions shall not be taken
                       into account for purposes of computing the Top-Heavy
                       Ratio. When aggregating plans the value of account
                       balances and accrued benefits will be calculated with
                       reference to the Determination Date that falls within
                       the same calendar year.

                       (m) The term "Valuation Date" shall mean, for purposes
                                     --------------
               of computing the Top-Heavy Ratio, the Determination Date.

               5.3 Top-Heavy Minimum Allocation Rules. The following Top-
                   ----------------------------------
               Heavy Plan minimum allocation rules shall apply:

                       (a) Except as otherwise provided in Paragraph (b) and
               (c) below, the Employer contributions and forfeitures
               allocated on behalf of any Participant who is not a Key
               Employee shall be the lesser of 3 percent of such
               Participant's Compensation or in the case where the Employer
               has no defined benefit plan which designates the Plan to
               satisfy Section 401 of the Code, the largest percentage of
               compensation allocated with respect to a Key Employee for the
               Plan Year. Tax-Deferred Contributions cannot be used to
               satisfy the minimum contributions for non-Key Employees under
               Section 416 of the Code. Furthermore, in making the
               determination of the percentage at which contributions are
               made for the Key Employee with the highest percentage,
               Tax-Deferred Contributions on behalf of Key Employees shall be
               taken into account.

                       (b) The provisions in paragraph (a) shall not apply
               to any Participant who is not actively employed as an Employee
               by the Employer on the last day of the Plan Year for which the
               minimum allocation is to be made.

                                    EX99-10
<PAGE>

                       (c) The provisions in paragraph (a) shall not apply
               to any Participant to the extent the Participant is covered
               under any other plan or plans of the Employer, and by the
               terms of such plan or plans it is provided that the minimum
               allocation or benefit requirements applicable to Top-Heavy
               Plans shall be met in such other plan or plans. If such other
               plan is, or if one of such other plans is, a defined benefit
               plan maintained by the Employer, and such plan is a Top-Heavy
               Plan, the minimum benefit requirements applicable to Top-Heavy
               Plans shall be met under such defined benefit plan as provided
               therein, to the extent such benefit can be provided under such
               plan or plans. If such other plan is, or if one of such other
               plans is, a defined contribution plan maintained by the
               Employer, and such plan is a Top-Heavy Plan, the minimum
               allocation requirements shall be met under such plan, except
               as may be otherwise provided in such other plan. The
               application and administration of the minimum allocation or
               benefit requirements for Top-Heavy Plans shall be satisfied in
               a manner so as to only satisfy the minimum allocation/benefit
               requirements as permissible and so as to avoid any duplication
               of minimum allocation/benefits for non-Key Employees, as
               provided under Section 416 of the Code.

               5.4 Top-Heavy Vesting Schedule. A Participant shall be
                   --------------------------
               entitled to the vested interest in his Account attributable to
               Employer contributions calculated in accordance with the
               provisions of Article IV (or, if greater, in accordance with
               the provisions of Section 5.3) determined in accordance with
               the following schedule if greater than under Article III:

                   Years of Service                          Vested Percentage
                   ----------------                          -----------------
                      Less than 2                                     0%
                      2 but less than 3                              20%
                      3 but less than 4                              40%
                      4 but less than 5                              60%
                      5 but less than 6                              80%
                      6 or more                                     100%

               If the Plan becomes a Top-Heavy Plan and subsequently ceases
               to be such, the vesting schedule set forth above shall
               continue to apply in determining the rights to benefits of any
               Participant who had at least three years of Service as of
               December 31 in the last Plan Year in which the Plan was a
               Top-Heavy Plan. For other Participants, such schedule shall
               apply only to that portion of their Account that became vested
               under the vesting schedule set forth above as of such December
               31.

               5.5 Top-Heavy Compensation Limitation. The annual compensation
                   ---------------------------------
               of any Participant to be taken into account under the Plan
               during any Plan Year in which the Plan is determined to be a
               Top-Heavy Plan shall not exceed the limitation on Compensation
               set forth in the second paragraph of Section 1.9.

               5.6 Top-Heavy Plan/Benefit Limitations. In any Plan Year
                   ----------------------------------
               beginning prior to January 1, 2000, in which the Plan is a
               Top-Heavy

                                    EX99-11
<PAGE>

               Plan, the denominators of the defined benefit fraction and the
               defined contribution fraction (as such terms are used in applying
               the benefit limitation provisions of Section 415 of the Code)
               shall be computed using 100 percent of the dollar limitation
               instead of 125 percent.

         13.   The first sentence of Section 6.1 of the Plan is hereby deleted
and four sentences are substituted in place thereof to provide as follows:

               The Company shall cause at least three investment funds to be
               established and maintained at all times. Each such fund shall be
               diversified and have different risk and return characteristics
               from the other Funds. Any fund which invests in investments with
               restrictions regarding funds to which investment transfers may be
               made or to which a minimum investment period is applicable shall
               not be considered as one of such requisite three investment
               Funds. The Plan is intended to constitute a plan described in
               Section 404(c) of ERISA and DOL Regs. Section 2550.404c-1 and
               insofar as the Plan complies with said Section 404(c), Plan
               fiduciaries shall be relieved of liability for any losses which
               are the direct result of investment instructions given by
               Participants. Notwithstanding the foregoing, to the extent that
               Section 404(c) of ERISA is not applicable, Participants shall be
               named fiduciaries with respect to the investment of their
               Accounts.

         14.   Section 8.1 is hereby amended effective January 1, 1997, to
provide as follows:

               8.1 Distribution at Required Beginning Date. Notwithstanding
                   ---------------------------------------
               any other provision of the Plan to the contrary, on and after
               January 1, 1997, payment of a retired or former Participant's
               benefit shall commence not later than the earlier of:

                            (i) the 60th day after the end of the Plan
                       Year in which the latest of the following dates
                       occurs: (i) Participant's Normal Retirement Date,
                       (ii) the tenth anniversary of the date on which the
                       Participant first became a Participant, and (iii) the
                       date of the Participant's retirement or other
                       termination of employment; or

                            (ii) the April 1 following the calendar year
                       in which the later of the following dates occurs: (i)
                       the date on which the Participant attains 70-1/2, or
                       (ii) the date on which the Participant retires
                       (except for a Participant who is a 5% owner, as
                       defined in Section 416(i)(1)(B) of the Code, the date
                       determined under this Paragraph (d) shall be April 1
                       of the calendar year following the calendar year in
                       which the Participant attains age 70-1/2 without
                       regard to the date of the Participant's retirement.

               All payments required under this Article VIII, shall be
               determined and made in accordance with the regulations under
               Section 401(a)(9) of the Code, including the minimum
               distribution incidental benefit

                                    EX99-12
<PAGE>

               requirements of proposed Treas. Reg. ss.1.401(a)(9)-2, if
               applicable. Any non-retired Participant (other than a 5% owner)
               who has attained age 70-1/2 and who is receiving payment of his
               benefit while employed by a Member of a Controlled Group, may
               elect in writing in the manner, time, and form required by the
               Company to terminate payment of his Plan benefit otherwise
               payable after January 1, 1997, until after his retirement under
               the terms of the Plan in effect at such time. Any non-retired
               Participant (other than a 5% owner) who attains age 70-1/2 in
               1997 or 1998, may elect in writing in the manner, time, and form
               required by the Company to defer payment of his Plan benefit
               until after his retirement pursuant to the terms of the Plan in
               effect at such time. Notwithstanding the foregoing, the spouse of
               any Participant who so elects to terminate receiving Plan
               benefits which are being paid in a qualified joint and survivor
               annuity (within the meaning of Section 417(b) of the Code) must
               consent to such election and acknowledge the effect of the
               election. If such a Participant does not make such an election or
               if the Participant is a 5% owner, payment of his Plan benefit
               shall be made or shall continue to be made to him pursuant to the
               provisions of this Section 8.3 in effect prior to January 1,
               1997. For purposes of Section 417 of the Code, any recommencement
               of benefits under this Section 8.3 shall be considered a new
               annuity starting date.

         15.   Paragraph (b) of Section 8.3 of the Plan is hereby amended to
provide as follows:

                       (b) Lump Sum. Except as provided in Section 8.3(c)
                           --------
               and (d), a Participant's Account shall be distributed in one
               or more payments within one calendar year, as soon as
               practicable after his separation from service. The Committee
               shall direct the Trustee to distribute to a Participant or his
               Beneficiary any amount to which the Participant or his
               Beneficiary is entitled under the Plan in one lump sum payment
               in cash, except that with respect to distribution from the ICF
               Kaiser Stock Fund, the Committee may direct the Trustee to
               distribute to a Participant or his Beneficiary any amount to
               which the Participant or his Beneficiary is entitled under the
               ICF Kaiser Stock Fund in one lump sum payment in whole shares
               of qualifying employer securities (with the value of any
               fractional share paid in cash), cash, or a combination of
               both, at the election of the Participant; provided, however,
               that the distribution of any such cash payment shall be made
               not later than two months after the date that distribution of
               Company Stock would have occurred and shall be determined as
               of the value of Company Stock on such date.

         16.   Paragraph (d)(2) of Section 8.3 of the Plan is hereby amended
effective January 1, 1997, to provide as follow:

                       (d)(2) Notwithstanding any other provision of the
               Plan to the contrary, any rejection, or revocation of a
               rejection, of the automatic election of the qualified joint
               and survivor annuity shall be made only

                                    EX99-13
<PAGE>

               within the 90-day period prior to the Participant's annuity
               starting date. Within a reasonable period of time prior to the
               annuity starting date, the Company shall provide each
               Participant with a written explanation of (1) the terms and
               conditions of the qualified joint and survivor annuity and its
               financial effect on his retirement benefit; (2) the
               Participant's right to waive such joint and survivor annuity;
               (3) the rights of the Participant's spouse regarding consent
               as described above in subparagraph (ii); and (4) the right to
               make and the effect of, a revocation of an election to waive
               the automatic qualified joint and survivor annuity. Such
               explanation shall be provided at least 30 days prior to
               distribution unless the Participant (with any applicable
               spousal consent) waives such 30-day requirement and
               distribution commences more than 7 days after such explanation
               is provided.

         17.   Paragraph (e) of Section 8.3 of the Plan is hereby amended
effective January 1, 1998, to provide as follow:

                       (e) Alternative Form of Benefit for Amounts
                           ---------------------------------------
               Attributable to Benefits Transferred From the Georgia A.
               --------------------------------------------------------
               Wilson & Associates, Inc. Retirement Plan (the "Georgia Wilson
               --------------------------------------------------------------
               Plan"). A Participant whose Account is credited with benefits
               ------
               from the Georgia Wilson Plan may elect to receive the portion
               of his Account attributable to such benefits from the Georgia
               Wilson Plan in payments over a period certain in monthly,
               quarterly, semiannual, or annual cash installments, which
               period shall not extend beyond the Participant's life
               expectancy (or the life expectancy of the Participant and his
               designated Beneficiary).

         18.   Article IX of the Plan is hereby amended effective March 17,
1999, to provide as follows:


                                  ARTICLE IX

                     ADMINISTRATION AND CLAIMS PROCEDURES
                     ------------------------------------
               9.1 Authority of the Company. The Company shall be the Plan
                   ------------------------
               administrator for purposes of ERISA and the Code and shall
               have the authority and the power to perform the functions
               conferred upon it herein, subject to the limitations
               hereinafter set forth. The Company shall have the sole right
               to interpret and construe the Plan, and to determine any
               disputes arising thereunder, subject to the provisions of
               Section 9.3. In exercising such powers and authorities, the
               Company shall at all times exercise good faith, apply
               standards of uniform application, and refrain from arbitrary
               action. The Company may employ such attorneys, agents, and
               accountants as it may deem necessary or advisable to assist it
               in carrying out its duties hereunder. The Company is hereby
               designated as a "named fiduciary" of the Plan as such term is
               defined in Section 402(a)(2) of ERISA. The Company may
               allocate any of its responsibilities for the day to day
               operation and administration of the Plan to any person or
               persons employed by it. In addition, the Company, by action of
               its Board of Directors, may

                                    EX99-14
<PAGE>

               designate a person other than itself to carry out any of such
               powers, authorities or responsibilities which are retained by it
               or granted to it by this Article IX.

               9.2 Action of Company. Any act authorized, permitted, or
                   -----------------
               required to be taken by the Company under the Plan, which has
               not been allocated or delegated in accordance with Section
               9.1, may be taken by a majority of the members of the Board of
               Directors of the Company, either by vote at a meeting, or in
               writing without a meeting. All notices, advices, directions,
               certifications, approvals, and instructions required or
               authorized to be given by the Company under the Plan shall be
               in writing and signed by either (a) a majority of the members
               of the Board of Directors of the Company, or by such member or
               members as may be designated by an instrument in writing,
               signed by all the members thereof, as having authority to
               execute such documents on its behalf, or (b) a person who
               becomes authorized to act for the Company in accordance with
               the provisions of Section 9.1. Subject to the provisions of
               Section 9.3, any action taken by the Company which is
               authorized, permitted, or required under the Plan shall be
               final and binding upon the Company and the Trustee, all
               persons who have or who claim an interest under the Plan, and
               all third parties dealing with the Company or the Trustee.

               9.3 Claims Review Procedure. Whenever the Company decides for
                   -----------------------
               whatever reason to deny, whether in whole or in part, a claim
               for benefits filed by any person (hereinafter referred to a
               the "Claimant"), the Plan administrator shall transmit to the
               Claimant a written notice of the Company's decision, which
               shall be written in a manner calculated to be understood by
               the Claimant and contain a statement of the specific reasons
               for the denial of the claim and a restatement advising the
               Claimant that, within 60 days of the date on which he receives
               such notice, he may obtain review of the decision of the
               Company in accordance with the procedures hereinafter set
               forth. Within such 60-day period, the Claimant or his
               authorized representative may request that the claim denial be
               reviewed by filing with the Plan Administrator a written
               request therefor, which request shall contain the following
               information:

                       (a) the date on which the Claimant's request was
               filed with the Plan administrator; provided, however, that the
               date on which the Claimant's request for review was in fact
               filed with the Plan Administrator shall control in the event
               that the date of the actual filing is later than the date
               stated by the Claimant pursuant to this paragraph (a);

                       (b) the specific portions of the denial of his claim
               which the Claimant requests the Plan administrator to review;

                       (c) a statement by the Claimant setting forth the
               basis upon which he believes the Plan administrator should
               reverse the Trustee's

                                    EX99-15
<PAGE>

               previous denial of his claim for benefits and accept his claim
               as made; and

                       (d) any written material (offered as exhibits) which
               the Claimant desires the Plan administrator to examine in its
               consideration of his position as stated pursuant to paragraph
               (c).

               Within 60 days of the date determined pursuant to paragraph
               (a) of this Section 9.3, the Plan administrator shall conduct
               a full and fair review of the Company's decision denying the
               Claimant's claim for benefits. Within 60 days of the date of
               such hearing, the Plan administrator shall render its written
               decision on review, written in a manner calculated to be
               understood by the Claimant, specifying the reasons and Plan
               provisions upon which its decision was based.

               9.4 Indemnification. In addition to whatever rights of
                   ---------------
               indemnification the members of the Board of Directors of the
               Company, or any other person or persons to whom any power,
               authority, or responsibility of the Company is delegated
               pursuant to Section 9.1, may be entitled under the articles of
               incorporation, regulations, or by-laws of the Company, under
               any provision of law, or under any other agreement, the
               Company shall satisfy any liability actually and reasonably
               incurred by any such person or persons, including expenses,
               attorneys' fees, judgments, fines, and amounts paid in
               settlement, in connection with any threatened, pending, or
               completed action, suit, or proceeding which is related to the
               exercise or failure to exercise by such person or persons of
               any of the powers, authority, responsibilities, or discretion
               provided under the Plan, or reasonably believed by such person
               or persons to be provided hereunder, and any action taken by
               such person or persons in connection therewith.

               9.5 Administrative Expenses. The fees of the Trustee and all
                   -----------------------
               other administrative expenses of the Plan and Trust shall be
               paid by the Trustee from the assets of the Trust unless the
               Company, in its discretion, elects to pay any such fees and/or
               expenses.

               9.6 Voting of Company Stock in the ICF Kaiser Stock Fund. Each
                   ----------------------------------------------------
               Participant or Beneficiary who has shares of Company Stock
               allocated to his Account shall be a named fiduciary with
               respect to the voting of Company Stock held thereunder and
               shall have the following powers and responsibilities:

                       (a) Prior to each annual or special meeting of the
               shareholders of the Company, the Company shall cause to be
               sent to each Participant and Beneficiary who has Company Stock
               allocated to his Account and invested in the ICF Kaiser Stock
               Fund under the Plan a copy of the proxy solicitation material
               therefor, together with a form requesting confidential voting
               instructions, with respect to the voting of such Company Stock
               as well as the voting of Company Stock for which the Trustee
               does not receive instructions. Each such Participant and/or
               Beneficiary shall instruct the Trustee to vote the number of
               such uninstructed shares of Company Stock equal to the
               proportion that the number of shares of Company Stock
               allocated to his

                                    EX99-16
<PAGE>

               Account and invested in the ICF Kaiser Stock Fund bears to the
               total number of shares of Company Stock in the Plan for which
               instructions are received. Upon receipt of such a
               Participant's or Beneficiary's instructions, the Trustee shall
               then vote in person, or by proxy, such shares of Company Stock
               as so instructed.

                       (b) The Company shall cause the Trustee to furnish to
               each Participant and Beneficiary who has Company Stock
               allocated to his Account and invested in the ICF Kaiser Stock
               Fund under the Plan notice of any tender or exchange offer
               for, or a request or invitation for tenders or exchanges of,
               Company Stock made to the Trustee. The Trustee shall request
               from each such Participant and Beneficiary instructions as to
               the tendering or exchanging of Company Stock allocated to his
               Account. Each Participant and Beneficiary who does not
               instruct the Trustee with respect to the tendering or
               exchanging of Company Stock allocated to his Account shall be
               deemed to have decided not to participate in any such tender
               or exchange offer. The Trustee shall provide Participants and
               Beneficiaries with a reasonable period of time in which they
               may consider any such tender or exchange offer for, or request
               or invitation for tenders or exchanges of, Company Stock made
               to the Trustee. Within the time specified by the Trustee, the
               Trustee shall tender or exchange such Company Stock as to
               which the Trustee has received instructions to tender or
               exchange from Participants and Beneficiaries.

                       (c) Instructions received from Participants and
               Beneficiaries by the Trustee regarding the voting, tendering,
               or exchanging of Company Stock shall be held in strictest
               confidence and shall not be divulged to any other person,
               including officers or employees of the Company, except as
               otherwise required by law, regulation or lawful process.

         19.   The first sentence of Section 10.1 of the Plan is hereby amended
effective March 17, 1999, by the deletion of the phrase "and the Committee".

         20.   The second sentence of Section 10.3 of the Plan is hereby amended
effective March 17, 1999, by the deletion of the phrase "the Committee and".

         21.   The third sentence of Section 10.3 of the Plan is hereby amended
effective March 17, 1999, by the deletion of the phrase "or Committee".

         22.   The first sentence and third sentence of Section 10.4 of the Plan
are hereby amended effective March 17, 1999, by the deletion of the phrase "and
Committee".

         23.   The term "Committee" is hereby deleted effective March 17, 1999,
throughout the Plan and the term "Company" is hereby substituted in place
thereof.


               Executed this 8th day of April, 1999.

                                        ICF KAISER INTERNATIONAL, INC.



                                        By:  /s/ Timothy P. O'Connor
                                             ---------------------------
                                             Senior Vice President and
                                             Chief Financial Officer

                                    EX99-17
<PAGE>

                                FIFTH AMENDMENT
                                    TO THE
                        ICF KAISER INTERNATIONAL, INC.
                              SECTION 401(K) PLAN



         WHEREAS, the ICF Kaiser International, Inc. Section 401(k) Plan
(hereinafter referred to as the "Plan") was established effective as of March 1,
1989, by ICF Kaiser International, Inc. (hereinafter referred to as the
"Company"); and

         WHEREAS, the Plan was most recently restated as of January 1, 1998; and

         WHEREAS, the restated Plan was amended subsequently on four occasions;
and

         WHEREAS, the Company desires to amend the Plan again;

         NOW, THEREFORE, effective as of April 7, 1999, the Plan is hereby
amended in the respects hereinafter set forth.

         1.    Section 2.6 is hereby amended to provide as follows:

               2.6 Cessation of Coverage of Certain Participants. Effective as
                   ---------------------------------------------
               of the date of the Closing with respect to the sale of the
               Environment and Facilities Management Group ("EFM Group") of the
               Company to The IT Group, Inc., coverage under the Plan shall be
               closed to any individual employed by, or at a facility of, the
               EFM Group and effective as of the date of the Closing with
               respect to the sale by the Company of the majority of capital
               stock of ICF Consulting Group, Inc. ("ICF Consulting Group") to
               ICF Consulting Group Holdings, LLC or any other unrelated entity,
               coverage under the Plan shall be closed to any individual
               employed by, or at a facility of, ICF Consulting Group.

         2.    Article VIII of the Plan is hereby amended by the addition of
Section 8.10 at the end thereof to provide as follows:

               8.10 Transfer to ICF Consulting Plan. As soon as practicable
                    -------------------------------
               after the date of the Closing with respect to the sale by the
               Company of the majority of its capital stock of ICF Consulting
               Group to ICF Consulting Group Holdings, LLC or any other
               unrelated entity, the Account balances of Participants who are
               employed by ICF Consulting Group after such date shall be
               transferred to a tax-qualified defined contribution plan
               established by ICF Consulting Group (the "ICF Plan") to be held
               and maintained thereafter in accordance with the terms of the ICF
               Plan.


               Executed this 25th day of June, 1999.

                                           ICF KAISER INTERNATIONAL, INC.



                                           By:  /s/ Timothy P. O'Connor
                                               ----------------------------
                                               Senior Vice President and
                                               Chief Financial Officer

                                    EX99-18


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