1
                                                                EXHIBIT 10(p)
                                AMENDMENT NO. 1

         AMENDMENT NO. 1 dated as of January 19, 1995, to the Master Loan and
Security Agreement dated as of May 11, 1993 (herein, together with all
exhibits, amendments, supplements and schedules thereto, called the "Loan
Agreement") between BOT FINANCIAL CORPORATION, a Delaware corporation  (herein
called "Lender"), having its principal place of business at 125 Summer Street,
Boston, MA  02110, and OHM REMEDIATION SERVICES CORP., an Ohio corporation
(herein called "Debtor"), having its principal place of business at 16406 US
Route 224 East, Findlay, Ohio 45840.   Capitalized terms used herein without
definition shall have the meaning set forth in the Loan Agreement.

         WHEREAS, Lender and Debtor have heretofore entered into the Loan
Agreement in connection with the financing of certain High Performance Mobile
Treatment System; and

         WHEREAS, the Loan Agreement requires that the Kirk family continue to
own at least 20% (on a fully-diluted basis) of the aggregate voting stock and
other voting securities of the Guarantor; and

         WHEREAS, the parties desire to amend the terms and conditions of the
Loan Agreement relating to the ownership of the Guarantor by the Kirk family.

         NOW, THEREFORE, in consideration of the premises and other good and
sufficient consideration, Lender and Debtor hereby agree as follows:

         1.      LOAN AGREEMENT. Section 6(i)(b) of the Loan Agreement is
hereby stricken in its entirety.

         2.      REPRESENTATIONS.  Debtor hereby certify to Lender that
(a) the representations and warranties of the Debtor contained in the Loan
Agreeement are true and correct in all material respects with the same effect
as if made on and as of the date hereof; and (b) no Event of Default is
existence on the date hereof, nor shall any Event of Default occur as a result
of the amendment contemplated hereby.

         3.      EFFECTIVE DATE. This Amendment No. 1 shall be effective
immediately before the opening of business on January 19, 1995.

         4.      MISCELLANEOUS.  Except as may be expressly provided herein,
the Loan Agreement shall remain unaltered, shall continue to be, and shall
remain, in full force and effect in accordance with their respective terms and
shall be ratified and confirmed in all respects.  This Amendment may be
executed by the parties hereto in separate counterparts, each of which when so
executed and delivered shall be an original, but all such counterparts shall
together constitute but one and the same instrument.




                                      
                                            1
   2
         IN WITNESS WHEREOF, the Lender and the Debtor have each caused this
Amendment No. 1 to be executed by their respective authorized officers as of
the date first above written.


                       BOT FINANCIAL CORPORATION (Lender)


                       By: \S\Gary L. Christensen
                           -----------------------
                       Title: Senior Vice President



                       OHM REMEDIATION SERVICES CORP. (Debtor)


                       By: \s\Pamela K.M. Beall  
                           -----------------------
                       Title:Treasurer





                                      2