Exhibit 23.3


               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


We consent to the reference to our firm under the caption "Experts" in the
Registration Statement and related Prospectus of TRC Companies, Inc. for the
registration of 1,100,000 shares of its common stock and to the incorporation by
reference therein of our report dated March 9, 2001 (except Note 9, as to which
the date is October 15, 2001) with respect to the combined financial statements
of Site-Blauvelt Engineers Group for the year ended December 31, 2000, included
in TRC Companies, Inc.'s Current Report on Form 8-K/A filed with the Securities
and Exchange Commission on December 26, 2001 and as further amended by Amendment
No. 2 to the Form 8-K filed with the Securities and Exchange Commission on March
15, 2002 and Amendment No. 3 to the Form 8-K filed with the Securities and
Exchange Commission on May 14, 2002.


                                                           /s/ Ernst & Young LLP

Philadelphia, PA
May 14, 2002