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                                                                EXHIBIT NO.3(BB)

            AMENDED BYLAWS OF ICF KAISER ADVANCED TECHNOLOGY, INC.
                             an Idaho Corporation
                      (as amended through August 8, 1998)

                              ARTICLE I. OFFICES

     Section 1.    Principal Office.  The principal office of the Corporation in
the State of Idaho, shall be located in the County of Ada, Idaho.

     Section 2.    Other Offices.  The Corporation may have such other offices,
either within or without the State of Idaho, as the board of directors may
designate or as the business of the Corporation may require from time to time.

     Section 3.    Registered Office.  The registered office of the Corporation
required by the Idaho Business Corporation Act to be maintained in the State of
Idaho may be, but need not be, identical with the principal office in the State
of Idaho, and the address of the registered office may be changed from time to
time by the board of directors.

                      ARTICLE II.  SHAREHOLDERS MEETINGS

     Section 1.    Annual Meetings. The annual meeting of the shareholders shall
be held the first day of the month of February in each year, beginning with the
year 1991, at the hour of 10:00 A.M., or at such other time on such other day
within such month as shall be fixed by the board of directors, for the purpose
of electing directors and for the transaction of such other proper business as
may come before the meeting. If the day fixed for the annual meeting shall be a
legal holiday in the State of Idaho, such meeting shall be held on the next
succeeding business day. If the election of directors is not held on the day
designated herein for the annual meeting of the shareholders, the board of
directors shall call a special meeting of the shareholders, as soon thereafter
as is convenient, for the election of the directors.

     Section 2.    Special Meetings.  Special meetings of the shareholders, for
any purpose or purposes, unless otherwise prescribed by statute, may be called
by the president or by the board of directors, and shall be called by the
president at the request of the holders of not less than one-fifth of all
outstanding shares of the corporation entitled to vote at the meeting.  A
request by shareholders for a special meeting shall be in writing, specifying
the time of the meeting and the general nature of business proposed to be
transacted.  The request shall be delivered personally or sent by registered
mail to the President, whom shall promptly cause notice to be given in
accordance with these Bylaws.

    Section 3.     Place of Meetings.  Meetings of shareholders shall be held at
any place, either within or without the State of Idaho, designated by the Board.
A waiver of notice signed by all shareholders entitled to vote at a meeting may
designate any place, either within or without the State of Idaho, as the place
for the holding of such meeting.  If no designation is made, or if a special
meeting be otherwise called, the place of meeting shall be the Principal Office.

    Section 4.     Notice of Meeting.  Written notice specifying the place, day
and time of the meeting and, in case of a special meeting, the purpose or
purposes for which the meeting is called, shall, unless otherwise prescribed by
statute, be delivered not less than ten (10) nor more than fifty (50) days
before the date of the meeting, either personally or by first class mail, by or
at the direction of the president, or the secretary, to each shareholder of
record entitled to vote at such meeting.  If mailed, such notice shall be deemed
to be delivered when deposited in the 
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United States mail, addressed to the shareholder at this address as it appears
on the stock transfer books of the Corporation, or at such other last known
address of which the Corporation may have notice, with postage thereon prepaid.

    Section 5.     Closing of Transfer Books or Fixing of Record Date.  For the
purpose of determining shareholders entitled to notice of or to vote at any
meeting of the shareholders or any adjournment thereof, or shareholders entitled
to receive payment of any dividend, or in order to make a determination of
shareholders for any other proper purpose, the board of directors of the
corporation may provide that the stock transfer books shall be closed for a
stated period but not to exceed, in any case, fifty (50) days prior to the
meeting or determination.  If the stock transfer books shall be closed for the
purpose of determining shareholders entitled to notice of or to vote at a
meeting of shareholders, such books shall be closed for at least ten (10) days
prior to the date on which the particular action, requiring such determination
of shareholders, is to be taken.  If the stock transfer books are not closed and
no record date is fixed for the determination of shareholders entitled to
receive payment of a dividend, the date on which notice of the meeting is mailed
or the date on which the resolution of the board of directors declaring such
dividend is adopted as the case may be, shall be the record date for such
determination of shareholders.  When a determination of shareholders entitled to
vote at any meeting of shareholders has been made as provided in this section,
such determination shall apply to any adjournment thereof.

    Section 6.     Quorum.  A majority of the outstanding shares of the
Corporation entitled to vote, represented in person or by proxy, shall
constitute a quorum at a meeting of shareholders.  If a quorum is present at a
meeting, a majority of the shares so represented may adjourn the meeting from
time to time without further notice.  At such adjourned meeting at which a
quorum shall be present or represented, any business may be transacted which
might have been transacted at the meeting as originally noticed.  The
shareholders present at a duly organized meeting may continue to transact
business until adjournment, notwithstanding the withdrawal of enough
shareholders to leave less than a quorum.

    Section 7.     Proxies.  At all meetings of shareholders, a shareholder may
vote in person or by proxy executed in writing by the shareholder or by his duly
authorized attorney in fact.  Such proxy shall be filed with the secretary of
the Corporation before or at the time of the meeting.  A valid proxy which does
not state it is irrevocable shall continue in full force and effect unless (i)
revoked by the person executing it before the vote pursuant to the proxy, by a
writing delivered to the Corporation, or by a subsequent proxy, or (ii) written
notice of the death or incapacity of the maker of the proxy received by the
Corporation before the vote; provided, however, no proxy shall be valid after
the expiration of eleven (11) months from the date of its execution, unless
otherwise provided in the proxy.

     Section 8.    Voting of Shares.  Each outstanding share entitled to vote
shall be entitled to one vote upon each matter submitted to a vote at a meeting
of shareholders.

     Section 9.    Voting of Shares by Certain Holders. Shares standing in the
name of another Corporation may be voted by such officer, agent or proxy as the
Bylaws of such Corporation may prescribe, or, in the absence of such provision,
as the board of directors of such other Corporation may determine.

     Shares held by an administrator, executor, guardian, or conservator may be
voted by him, either in person or by proxy, without a transfer of such shares
into his name.  Shares standing in the name of a trustee may be voted by him,
either in person or by proxy, but no trustee shall be entitled to vote shares
held by him without a transfer of such shares into his name.

     Shares standing in the name of a receiver may be voted by such receiver,
and shares held by or under the control of a receiver may be voted by such
receiver without the transfer thereof into his name if authority to do so be
contained in an appropriate order of the court by which such receiver was
appointed.

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     A shareholder whose shares are pledged shall be entitled to vote such
shares until the shares have been transferred into the name of the pledgee, and
thereafter the pledgee shall be entitled to vote the shares so transferred.

     Neither treasury shares of its own stock held by the Corporation nor shares
held by another corporation if a majority of the shares entitled to vote for the
election of directors of such other corporation are held by the Corporation,
shall be voted at any meeting or counted in determining the total number of
outstanding shares at any given time for purposes of any meeting.

     Section 10.   Informal Action by Shareholders.  Any action required or
permitted to be taken at a meeting of the shareholders may be taken without a
meeting if a consent in writing, setting forth the action so taken, shall be
signed by the shareholders having not less than the minimum number of votes
which would be necessary to authorize or take the action at a meeting at which
all shares entitled to vote were present and voted.

     Section 11.   Cumulative Voting.  Cumulative voting shall not be allowed.

                       ARTICLE III.  BOARD OF DIRECTORS

     Section 1.    General Powers.  The business and affairs of the Corporation
shall be managed and all corporate powers shall be exercised by or under the
direction of the board of directors.

     Section 2.    Number and Qualifications.  The number of directors of the
Corporation shall not be less than one (1) nor more than five (5).  The number
of directors may be changed by amendment to these Bylaws approved by the
shareholders by vote at a meeting or by written consent or by the directors by
vote at a meeting or by written consent.  Directors need not be residents of the
State of Idaho or shareholders of the Corporation.

     Section 3.    Election and Term.  Directors shall be elected at each annual
meeting of the shareholders and shall hold office until the next annual meeting
of shareholders or until his successor shall have been elected and qualified.

     Section 4.    Regular Meetings. A regular meeting of the board of directors
shall be held without other notice than this Bylaw immediately after, and at the
same place as, the annual meeting of shareholders. The board of directors may
provide, by resolution, the time and place, either within or without the State
of Idaho, for the holding of additional regular meetings without notice than
such resolution. In the absence of designation, regular meetings shall be held
at the Principal Office.

     Section 5.    Special Meetings.  Special meetings of the board of directors
may be called by or at the request of the president or any director.  The person
or persons authorized to call special meetings of the board of directors may fix
any place, either within or without the State of Idaho, as the place for holding
any special meeting of the board of directors called by them.

     Section 6.    Notice. Notice of any special meeting shall be given at least
three (3) days previously thereto by written notice delivered personally or
mailed to each director at his or her business address, or by telegram. If
mailed, such notice shall be deemed to be delivered when deposited in the United
States mail, so addressed, with postage thereon prepaid. If notice be given by
telegram, such notice shall be deemed to be delivered when the telegram is
delivered to the telegraph company. Any director may waive notice of any
meeting. The attendance of a director at a meeting shall constitute a waiver of
notice of such meeting, except where a director attends a meeting for the
express purpose of objecting to the transaction of any business because the
meeting is not lawfully called or convened. Neither the business to be
transacted at, nor the purpose of, any regular or special meeting of the board
of directors need be specified in the notice or waiver of notice of such
meeting.

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     Section 7.    Quorum. A majority of the number of directors fixed by
section 2 of this Article III shall constitute a quorum for the transaction of
business at any meeting of the board of directors, but if less than such
majority is present at a meeting, a majority of the directors present may
adjourn the meeting from time to time without further notice.

     Section 8.    Manner of Acting.  The act of the majority of the directors
present at a meeting at which a quorum is present shall be the act of the board
of directors.

     Section 9.    Action Without a Meeting. Any action required or permitted to
be taken by the board of directors at a meeting may be taken without a meeting
if a consent in writing, setting forth the action so taken shall be signed by
all of the directors.

     Section 10.   Vacancies.  Any vacancy occurring in the board of directors
may be filled by the affirmative vote of a majority of the remaining directors
though less than a quorum of the board of directors.  A director elected to fill
a vacancy shall be elected for the unexpired term of his predecessor in office.
Any directorship to be filled by reason of an increase in the number of
directors may be filled by election by the board of directors for a term of
office continuing only until the next election of directors by the shareholders.

     Section 11.   Compensation.  By resolution of the board of directors, each
director may be paid his expenses, if any, of attendance at each meeting of the
board of directors, and may be paid, as director, a stated salary of a fixed sum
for attendance at each meeting of the board of directors, or both.  No such
payment shall preclude any director from serving the Corporation in any other
capacity and receiving compensation therefor.

     Section 12.   Presumption of Assent.  A director of the Corporation who is
present at a meeting of the board of directors at which action on any corporate
matter is taken shall be presumed to have assented to the action taken unless
his dissent shall be entered in the minutes of the meeting or unless he shall
file his written dissent to such action with the person acting as the secretary
of the meeting before the adjournment thereof or shall forward such dissent by
registered mail to the secretary of the Corporation immediately after the
adjournment of the meeting.  Such right to dissent shall not apply to a director
who voted in favor of such action.

                             ARTICLE IV.  OFFICERS

     Section 1.    Number. The officers of the Corporation shall be president,
one or more vice presidents (the number thereof to be determined by the board of
directors), a secretary, and a treasurer, each of whom shall be elected by the
board of directors. Such other officers and assistant officers as may be deemed
necessary may be elected or appointed by the board of directors. Any two or more
offices may be held by the same person, except the offices of president and
secretary.

     Section 2.    Election and Term of office. The officers of the Corporation
to be elected by the board of directors shall be elected annually by the board
of directors at the first meeting of the board of directors held after each
annual meeting of the shareholders. If the election of officers shall not be
held at such meeting, such election shall be held as soon thereafter as is
convenient. Each officer shall hold office until his successor shall have been
duly elected and shall have qualified or until his death or until he shall
resign or shall have been removed in the manner hereinafter provided.

     Section 3.    Removal. Any officer or agent may be removed by the board of
directors whenever in its judgement, the best interests of the Corporation will
be served thereby, but such removal shall be without prejudice to the contract
rights, if any, of the person so removed. Election or appointment of an officer
or agent shall not of itself create contract rights.

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     Section 4.    Vacancies. A vacancy in any office because of death,
resignation, removal, disqualification or otherwise, may be filled by the board
of directors for the unexpired portion of the term.

     Section 5.    The President. The president shall be the principal executive
officer of the Corporation and, subject to the control of the board of
directors, shall in general, supervise and control all of the business and
affairs of the Corporation. He shall, when present, preside at all meetings of
the shareholders and of the board of directors. He may sign, with the secretary
or any other proper officer of the Corporation thereunto authorized by the board
of directors, certificates for shares of the Corporation any deeds, mortgages,
bonds, contracts, or other instruments which the board of directors has
authorized to be executed, except in cases where the signing and execution
thereof shall be expressly delegated by the board of directors or by these
Bylaws to some other officer or agent of the Corporation, or shall be required
by law to be otherwise signed or executed, and in general shall perform all
duties incident to the office of president and such other duties as may be
prescribed by the board of directors from time to time.

     Section 6.    The Vice Presidents.  In the absence of the president or in
the event of his death, inability or refusal to act, the vice president (or in
the event there be more than one vice president, the vice presidents in the
order designated at the time of their election, or in the absence of any
designation, then in the order of their election) shall perform the duties of
the president, and when so acting, shall have all the powers of and be subject
to all the restrictions upon the president.  Any vice president may sign, with
the secretary or an assistant secretary, certificates for shares of the
Corporation; and shall perform such other duties as from time to time may be
assigned to him by the president or by the board of directors.

     Section 7.    The Secretary.  The secretary shall: (a) keep the minutes of
the proceedings of the shareholders and the board of directors in one or more
books provided for that purpose; (b) see that all notices are duly given in
accordance with the provisions of these Bylaws or as required by law; (c) be
custodian of the corporate records and of the seal of the Corporation and see
that the seal of the Corporation is affixed to all documents, the execution of
which on behalf of the Corporation under its seal, is duly authorized; (d) keep
a register of the post office address of each shareholder which shall be
furnished to the secretary by such shareholders; (e) sign with the president, or
a vice president, certificates for shares of the Corporation, the issuance of
which shall have been authorized by resolution of the board of directors; (f)
have general charge of the stock transfer books of the Corporation; and (g) in
general perform all duties incident to the office of secretary and such other
duties as from time to time may be assigned to him by the president or by the
board of directors.

     Section 8.    The Treasurer.  The treasurer shall: (a) have charge and
custody of and be responsible for all funds and securities of the Corporation;
(b) receive and give receipts for monies due and payable to the Corporation
from, any source whatsoever, and deposit all such monies in the name of the
Corporation in such banks, trust companies or other depositories as shall be
selected in accordance with the provisions of Article V of these Bylaws; and (c)
in general perform all of the duties incident to the office of treasurer and
such other duties as from time to time may be assigned to him by the president
or by the board of directors.  If required by the board of directors, the
treasurer shall give a bond for the faithful discharge of his duties in such sum
and with such surety or sureties as the board of directors shall determine.

     Section 9.    Assistant Secretaries and Assistant Treasurers. The assistant
secretaries, when authorized by the board of directors, may sign with the
president or a vice president certificates for shares of the Corporation the
issuance of which shall have been authorized by a resolution of the board of
directors.  The assistant treasurers shall respectively, if required by the
board of directors, give bonds for the faithful discharge of their duties in
such sums and with such sureties as the board of directors shall determine.  The
assistant secretaries and assistant  treasurers, in general, shall perform such
duties as shall be assigned to them by the secretary or the treasurer,
respectively, or by the president or the board of directors.

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     Section 10.   Salaries.  The salaries of the officers shall be fixed from
time to time by the board of directors and no officer shall be prevented from
receiving such salary by reason of the fact that he is also a director of the
Corporation.

               ARTICLE V. CONTRACTS, LOANS, CHECKS AND DEPOSITS

     Section 1.    Contract. The board of directors may authorize any officer or
officers, agent or agents, to enter into any contract or execute and deliver any
instrument in the name of and on behalf of the Corporation, and such authority
may be general or confined to specific instances.

     Section 2.    Loans.  No loans shall be contracted on behalf of the
Corporation and no evidences of indebtedness shall be issued in its name unless
authorized by a resolution of the board of directors.  Such authority may be
general or confined to specific instances.

     Section 3.    Checks, Drafts.  Etc.  All checks, drafts or other orders for
the payment of money, notes or other evidences of indebtedness issued in the
name of the Corporation shall be signed by such officer or officers, agent or
agents of the Corporation and in such manner as shall from time to time be
determined by resolution of the board of directors.

     Section 4.    Deposits. All funds of the Corporation not otherwise employed
shall be deposited from time to time to the credit of the Corporation in such
banks, trust companies or other depositories as the board of directors may
select.

            ARTICLE VI.  CERTIFICATES FOR SHARES AND THEIR TRANSFER

     Section 1.    Certificates for Shares.  Certificates representing shares of
the Corporation shall be in such form as shall be determined by the board of
directors.  Such certificates shall be signed by the president or a vice
president and by the secretary or an assistant secretary and sealed with the
corporate seal or a facsimile thereof.  The signatures of such officers upon a
certificate may be facsimiles if the certificate is manually signed on behalf of
a transfer agent or a registrar, other than the Corporation itself or one of its
employees.  Each certificate for shares shall be consecutively numbered or
otherwise identified.  The name and address of the person to whom the shares
represented thereby are issued, with the number of shares and date of issue,
shall be entered on the stock transfer books of the Corporation.  All
certificates surrendered to the Corporation for transfer shall be cancelled and
no new certificate shall be issued until the former certificate for a like
number of shares shall have been surrendered and cancelled, except that in case
of a lost, destroyed or mutilated certificate, a new one may be issued therefor
upon such terms and indemnity to the Corporation as the board of directors may
prescribe.

     Section 2.    Transfer of Shares.  Transfer of shares of the Corporation
shall be made only on the stock transfer books of the Corporation by the holder
of records thereof or by his legal representative, who shall furnish proper
evidence of authority to transfer, or by his attorney thereunto authorized by
power of attorney duly executed and filed with the secretary of the Corporation,
and on surrender for cancellation of the certificate for such shares.  The
person in whose name shares stand on the books of the Corporation shall be
deemed by the Corporation to be the owner thereof for all purposes.

                           ARTICLE VII.  FISCAL YEAR

     The fiscal year of the Corporation shall be as established by the board of
directors.

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                           ARTICLE VIII.  DIVIDENDS

     The board of directors may, from time to time, declare and the Corporation
may pay dividends on its outstanding shares in the manner and upon the terms and
conditions provided by law and its Articles of Incorporation.

                          ARTICLE IX.  CORPORATE SEAL

     The board of directors shall provide a corporate seal which shall be
circular in form and shall have inscribed thereon the name of the Corporation
and the state of incorporation and the words, "Corporate Seal."

                          ARTICLE X. WAIVER OF NOTICE

     Whenever any notice is required to be given to any shareholder or director
of the corporation under the provisions of these Bylaws or under the provisions
of the Articles of Incorporation or under the provisions of the Idaho Business
Corporation Act, a waiver thereof in writing signed by the person or persons
entitled to such notice, whether before or after the time stated therein, shall
be deemed equivalent to the giving of such notice.

                         ARTICLE XI.  INDEMNIFICATION

     The Corporation shall, to the maximum extent permitted by the Code, have
the power to indemnify each of its agents against expenses, judgements, fines,
settlements and other amounts actually and reasonably incurred in connection
with any proceeding arising by reason of the fact that any such person is or was
an agent of the Corporation. For the purposes of this Section, an "agent" of the
Corporation includes any person who is or was a director, officer, employee or
other agent of the Corporation, or is or was serving at the request of the
Corporation as a director, officer, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise, or was a director,
officer, employee or agent of a corporation which was a predecessor corporation
of the Corporation or of another enterprise at the request of such predecessor
corporation.

                           ARTICLE XII.  AMENDMENTS

     These Bylaws may be altered, amended or repealed and new Bylaws may be
adopted by the board of directors or by the shareholders at any regular or
special meeting.

                      ARTICLE XIII.  EXECUTIVE COMMITTEE

     Section 1.    Appointment. The board of directors by resolution adopted by
a majority of the full board, may designate two or more of its members to
constitute an executive committee. The designation of such committee and the
delegation thereto of authority shall not operate to relieve the board of
directors, or any member thereof, of any responsibility imposed by law.

     Section 2.    Authority.  The executive committee, when the board of
directors is not in session, shall have and may exercise all of the authority of
the board of directors except to the extent, if any, that such authority shall
be limited by the resolution appointing the executive committee and except also
that the executive committee shall not have the authority of the board of
directors in reference to amending the Articles of Incorporation, adopting a
plan of merger or consolidation, recommending to the shareholders the sale,
lease or other disposition of all or substantially all of the property and
assets of the Corporation otherwise than in the usual and regular course of its
business, recommending to the shareholders a voluntary dissolution of the
Corporation or a revocation thereof, or amending the Bylaws of the Corporation.

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     Section 3.    Tenure and Qualifications.  Each member of the executive
committee shall hold office until the next regular annual meeting of the board
of directors following his resignation and until his successor is designated as
a member of the executive committee and is elected and qualified.

     Section 4.    Meetings.  Regular meetings of the executive committee may be
held without notice to such times and places as the executive committee may fix
from time to time by resolution.  Special meetings of the executive committee
may be called by any member thereof upon not less than one day's notice stating
the place, date and hour of the meeting, which notice may be written or oral,
and if mailed, shall be deemed to be delivered when deposited in the United
States mail addressed to the member of the executive committee at his business
address.  Any member of the executive committee may waive notice of any meeting
and no notice of any meeting need be given to any member thereof who attends in
person.  The notice of a meeting of the executive committee need not state the
business proposed to be transacted at the meeting.

     Section 5.    Quorum.  A majority of the members of the executive committee
shall constitute a quorum for the transaction of business at any meeting thereof
and action of the executive committee must be authorized by the affirmative vote
of a majority of the members present at a meeting at which a quorum is present.

     Section 6.    Action Without a Meeting. Any action required or permitted to
be taken by the executive committee at a meeting may be taken without a meeting
if a consent in writing, setting forth the action so taken, shall be signed by
all of the members of the executive committee.

     Section 7.    Vacancies.  Any vacancy in the executive committee may be
filled by a resolution adopted by a majority of the full board of directors.

     Section 8.    Resignations and Removal.  Any member of the executive
committee may be removed at any time with or without cause by resolution adopted
by a majority of the full board of directors.  Any member of the executive
committee may resign from the executive committee at any time by giving written
notice to the president or secretary of the Corporation, and unless otherwise
specified therein, the acceptance of such resignation shall not be necessary to
make it effective.

     Section 9.    Procedure.  The executive committee shall elect a presiding
officer from its members and may fix its own rules of procedure which shall not
be inconsistent with these Bylaws. It shall keep regular minutes of its
proceedings.

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