TETRA TECH EAST TENNESSEE TECHNOLOGY PARK RETIREMENT SAVINGS PLAN

[ EIN: 95-4148514 | Plan No. 003 ]

The TETRA TECH EAST TENNESSEE TECHNOLOGY PARK RETIREMENT SAVINGS PLAN plan, sponsored by TETRA TECH, INC., is listed in Form 5500 data as a 401(k) plan. The filing reports 16 participants and total assets of $2,782,462 for plan year 2011.

Form 5500 filings provide transparency into participant counts, financial structure, and compliance reporting.

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Plan Sponsor: TETRA TECH, INC.

Location: 3475 EAST FOOTHILL BOULEVARD, PASADENA, CA 91107

EIN: 954148514

Plan Number: 003

Plan Year: 2011

Plan Size: Large Plan

Plan Entity Type: Defined Contribution

Plan Type: 401(k)

Participants: 16

Total Assets: $2,782,462

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