Tetra Tech (TTEK) Tops Q1 EPS by 3c

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Form SC 13G/A TETRA TECH INC Filed by: BlackRock Inc.

January 27, 2016 3:59 PM EST

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 6) TETRA TECH INC. -------------------------------------------------------- (Name of Issuer) Common Stock -------------------------------------------------------- (Title of Class of Securities) 88162G103 -------------------------------------------------------- (CUSIP Number) December 31, 2015 -------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [X] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of... More