EXHIBIT 99(b) ICF KAISER INTERNATIONAL, INC. NOTICE OF GUARANTEED DELIVERY of 12% Senior Notes due 2003, Series A As set forth in the Prospectus dated ______, 1997 (the "Prospectus") of ICF Kaiser International, Inc. (the "Company") under "The Exchange Offer--How to Tender" and in the Letter of Transmittal for 12% Senior Notes due 2003, Series A (the "Letter of Transmittal"), this form or one substantially equivalent hereto must be used to accept the Exchange Offer (as defined below) of the Company if: (i) certificates for the above-referenced Notes (the "Old Notes") are not immediately available; (ii) time will not permit all required documents to reach the Exchange Agent (as defined below) on or prior to the Expiration Date (as defined in the Prospectus); or (iii) the procedures for book-entry transfer cannot be completed on or prior to the Expiration Date (as defined below). Such form may be delivered by hand or transmitted by telegram, facsimile transmission or letter to the Exchange Agent. To: Bankers Trust Company (the "Exchange Agent") By Facsimile: (212) 250-6961 or (212) 250-6392 By Mail: Bankers Trust Company Corporate Trust and Agency Group Reorganization Department P.O. Box 1458 Church Street Station New York, New York 10008-1458 Hand/Overnight Delivery: Bankers Trust Company Corporate Trust and Agency Group Receipt & Delivery Window 123 Washington Street, 1st Floor New York, New York 10006 Delivery of this instrument to an address other than as set forth above or transmittal of this instrument to a facsimile number other than as set forth above does not constitute a valid delivery. Ladies and Gentlemen: The undersigned hereby tenders to the Company, upon the terms and conditions set forth in the Prospectus and the Letter of Transmittal (which together constitute the "Exchange Offer"), receipt of which are hereby acknowledged, the principal amount of Old Notes set forth below pursuant to the guaranteed delivery procedures described in the Prospectus and the Letter of Transmittal. The undersigned understands and acknowledges that the Exchange Offer will expire at 5:00 p.m., New York City time, on _______, 1997, unless extended by the Company. With respect to the Exchange Offer, "Expiration Date" means such time and date, or if the Exchange Offer is extended, the latest time and date to which the Exchange Offer is so extended by the Company. All authority herein conferred or agreed to be conferred by this Notice of Guaranteed Delivery shall survive the death or incapacity of the undersigned and every obligation of the undersigned under this Notice of Guaranteed Delivery shall be binding upon the heirs, personal representatives, executors, administrators, successors, assigns, trustees in bankruptcy and other legal representatives of the undersigned. SIGNATURES Principal amount of Old Notes Exchanged: _____________________________________ $____________________________________________ Signature of Owner _____________________________________ Certificates Nos. of Old Notes (if available) Signature of Owner (if more than one) Dated: _______________, 1997 _____________________________________________ _____________________________________________ Name(s): ____________________________ IF OLD NOTES WILL BE DELIVERED BY BOOK- _____________________________________ ENTRY TRANSFER, PROVIDE THE DEPOSITORY TRUST COMPANY ("DTC") ACCOUNT NO: Address:_____________________________ (Include Zip Code) Account No.: __________________________________ Area Code and Telephone No.:_________ Capacity (full tile), if signing in a representative capacity: ____________ Taxpayer Identification or Social Security No: ________________________ GUARANTEE OF DELIVERY (Not to be used for signature guarantee) The undersigned, a member of a recognized signature guarantee medallion program within the meaning of Rule 17Ad-15 under the Securities Exchange Act of 1934, as amended, hereby guarantees that certificates representing the principal amount of Old Notes tendered hereby in proper form for transfer, or timely confirmation of the book-entry transfer of such Old Notes into the Exchange Agent's account at The Depository Trust Company, in either case with delivery of a properly completed and duly executed Letter of Transmittal (or facsimile thereof) and any other required documents, is being made within five New York Stock Exchange trading days after the date of execution hereof. ____________________________________ ______________________________________ Name of Firm Authorized Signature ____________________________________ Number and Street or P.O. Box Title:________________________________ ----- ____________________________________ City State Zip Code Date:_________________________________ ---- Tel. No.: __________________________ Fax No.: ___________________________ NOTE: DO NOT SEND CERTIFICATES REPRESENTING OLD NOTES WITH THIS NOTICE. OLD NOTES SHOULD BE SENT TO THE EXCHANGE AGENT TOGETHER WITH A PROPERLY COMPLETED AND DULY EXECUTED LETTER OF TRANSMITTAL.