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                                   EXHIBIT 23
 
                        CONSENT OF INDEPENDENT AUDITORS
 
     We consent to the incorporation by reference in this Annual Report (Form
10-K) of OHM Corporation and subsidiaries of our report dated February 1, 1995,
included in the 1994 Annual Report to Shareholders of OHM Corporation and
subsidiaries.
 
     Our audits also included the financial schedule of OHM Corporation and
subsidiaries listed in Item 14(a). This schedule is the responsibility of the
Company's management. Our responsibility is to express an opinion based on our
audits. In our opinion, the financial statement schedule referred to above, when
considered in relation to the basic financial statements taken as a whole,
presents fairly in all material respects the information set forth therein.
 
     We also consent to the incorporation by reference in the Registration
Statements (Form S-8 No. 33-28025 and No. 33-24953) pertaining to the OHM
Corporation Stock Option Plan and OHM Corporation Retirement Savings Plan and in
the related Prospectuses of our report dated February 1, 1995, with respect to
the consolidated financial statements incorporated herein by reference, and our
report included in the preceding paragraph with respect to the financial
schedules included in this Annual Report (Form 10-K) of OHM Corporation and
subsidiaries.
 
                                          ERNST & YOUNG LLP
 
Columbus, Ohio
March 30, 1995