# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000831641-18-000097
Filing Date
2018-11-16
Accepted
2018-11-16 15:30:07
Documents
108
Period of Report
2018-09-30

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | tt10-kfy18document.htm | 10-K | 2572724
2 | EXHIBIT 21 | ttek-ex21x10012018xsingles.htm | EX-21 | 33657
3 | EXHIBIT 23 | ttek-ex23x10012018xsingles.htm | EX-23 | 2222
4 | EXHIBIT 31.1 | ttek-ex311x10012018xsingle.htm | EX-31.1 | 9083
5 | EXHIBIT 31.2 | ttek-ex312x10012018xsingle.htm | EX-31.2 | 9068
6 | EXHIBIT 32.1 | ttek-ex321x10012018xsingle.htm | EX-32.1 | 5466
7 | EXHIBIT 32.2 | ttek-ex322x10012018xsingle.htm | EX-32.2 | 5480
8 | EXHIBIT 95 | ttek-ex95x10012018xsingles.htm | EX-95 | 31356
15 |  | chart-937b8605f69956cd851a02.jpg | GRAPHIC | 40863
| Complete submission text file | 0000831641-18-000097.txt |  | 11900636

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
9 | XBRL INSTANCE DOCUMENT | ttek-20180930.xml | EX-101.INS | 2514198
10 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | ttek-20180930.xsd | EX-101.SCH | 81914
11 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | ttek-20180930_cal.xml | EX-101.CAL | 135574
12 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | ttek-20180930_def.xml | EX-101.DEF | 370285
13 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | ttek-20180930_lab.xml | EX-101.LAB | 1101758
14 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | ttek-20180930_pre.xml | EX-101.PRE | 630730

Mailing Address 3475 EAST FOOTHILL BOULEVARD PASADENA CA 91107
Business Address 3475 EAST FOOTHILL BOULEVARD PASADENA CA 91107 6263514664
TETRA TECH INC (Filer) CIK: 0000831641 (see all company filings)

EIN.: 954148514 | State of Incorp.: DE | Fiscal Year End: 0930
Type: 10-K | Act: 34 | File No.: 000-19655 | Film No.: 181189727
SIC: 8711 Services-Engineering Services