<SEC-DOCUMENT>0001104659-15-070618-index.html : 20151014 <SEC-HEADER>0001104659-15-070618.hdr.sgml : 20151014 <ACCEPTANCE-DATETIME>20151014144251 ACCESSION NUMBER: 0001104659-15-070618 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20151014 ITEM INFORMATION: Other Events ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20151014 DATE AS OF CHANGE: 20151014 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: 151158096 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>a15-21151_18k.htm <DESCRIPTION>8-K <TEXT> Document 1 - file: a15-21151_18k.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>2 <FILENAME>a15-21151_1ex99d1.htm <DESCRIPTION>EX-99.1 <TEXT> Document 2 - file: a15-21151_1ex99d1.htm
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