<SEC-DOCUMENT>0001104659-13-072782-index.html : 20131224 <SEC-HEADER>0001104659-13-072782.hdr.sgml : 20131224 <ACCEPTANCE-DATETIME>20130927183532 ACCESSION NUMBER: 0001104659-13-072782 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20130927 ITEM INFORMATION: Entry into a Material Definitive Agreement ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20130930 DATE AS OF CHANGE: 20130927 FILER: COMPANY DATA: COMPANY CONFORMED NAME: TETRA TECH INC CENTRAL INDEX KEY: 0000831641 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-ENGINEERING SERVICES [8711] IRS NUMBER: 954148514 STATE OF INCORPORATION: DE FISCAL YEAR END: 0928 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 000-19655 FILM NUMBER: 131121037 BUSINESS ADDRESS: STREET 1: 3475 EAST FOOTHILL BOULEVARD CITY: PASADENA STATE: CA ZIP: 91107 BUSINESS PHONE: 6263514664 MAIL ADDRESS: STREET 1: 3475 EAST FOOTHILL BOULEVARD CITY: PASADENA STATE: CA ZIP: 91107 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>a13-21427_18k.htm <DESCRIPTION>8-K <TEXT> Document 1 - file: a13-21427_18k.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-10.1 <SEQUENCE>2 <FILENAME>a13-21427_1ex10d1.htm <DESCRIPTION>EX-10.1 <TEXT> Document 2 - file: a13-21427_1ex10d1.htm
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