<SEC-DOCUMENT>0000831641-17-000015-index.html : 20171115 <SEC-HEADER>0000831641-17-000015.hdr.sgml : 20171115 <ACCEPTANCE-DATETIME>20171115185043 ACCESSION NUMBER: 0000831641-17-000015 CONFORMED SUBMISSION TYPE: 3 PUBLIC DOCUMENT COUNT: 3 CONFORMED PERIOD OF REPORT: 20171106 FILED AS OF DATE: 20171115 DATE AS OF CHANGE: 20171115 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Amidon Derek G CENTRAL INDEX KEY: 0001721981 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 000-19655 FILM NUMBER: 171206337 MAIL ADDRESS: STREET 1: 3475 EAST FOOTHILL BOULEVARD CITY: PASADENA STATE: CA ZIP: 91107 ISSUER: 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 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>3 <SEQUENCE>1 <FILENAME>wf-form3_151078982621471.xml <DESCRIPTION>FORM 3 <TEXT> Document 1 - file: wf-form3_151078982621471.html
Document 1 - RAW XML: wf-form3_151078982621471.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-24 <SEQUENCE>2 <FILENAME>poaamidon.htm <DESCRIPTION>POA AMIDON 1 <TEXT> Document 2 - file: poaamidon.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>poaamidon001.jpg <DESCRIPTION>POA AMIDON 2 <TEXT> Document 3 - file: poaamidon001.jpg
</DOCUMENT> </SEC-DOCUMENT>