INDEPENDENT AUDITORS' REPORT

Tetra Tech, Inc.:

We have audited the consolidated financial statements of Tetra Tech, Inc. and
its subsidiaries as of September 29, 1996 and October 1, 1995, and for each of
the three years in the period ended September 29, 1996, and have issued our
report thereon dated November 12, 1996; such financial statements and report are
included in your 1996 Annual Report to Stockholders and are incorporated herein
by reference.  Our audits also included the financial statement schedule of
Tetra Tech, Inc. and its subsidiaries, listed in Item 14.  This financial
statement schedule is the responsibility of the Company's management.  Our
responsibility is to express an opinion based on our audits.  In our opinion,
such financial statement schedule, when considered in relation to the basic
financial statements taken as a whole, presents fairly in all material respects
the information set forth therein.


DELOITTE & TOUCHE LLP


Los Angeles, California
November 12, 1996






                                  EXHIBIT 99.2