TETRA TECH, INC. is a surveying and mapping (except geophysical) services employer in SANTA ROSA, CA. Federal records show 1 OSHA inspection with 2 violations and $825 in penalties. 1 workplace fatality investigation on record. All data sourced from public federal enforcement records.
Data sourced from OSHA, DOL WHD, MSHA, EPA ECHO, NLRB, FMCSA, OFLC, BLS, SAM.gov, CMS, USAspending, CPSC, NHTSA, and the UVA Corporate Prosecution Registry. Last updated: May 3, 2026.
TETRA TECH, INC.
6583 ST HELENA RD, SANTA ROSA, CA, 95404
Parent: TETRA TECH INC (50 locations)
541370 — Top companies in Surveying and Mapping (except Geophysical) Services
EIN: 953983702
151 employees
Industry Benchmark
Data Insights
Inspection Breakdown
Peer Comparison
Labor Relations (NLRB)
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Inspection History
No inspection records found.
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Data aggregated from public federal enforcement and program records (OSHA, WHD, MSHA, EPA, NLRB, FMCSA, OFLC, BLS, SAM.gov, CMS, USAspending, CPSC, NHTSA) plus the UVA Corporate Prosecution Registry. Employer profiles matched by name and location — matching errors may occur. Risk scores computed by FastDOL, not official government assessments. OSHA citations typically appear 3-8 months after the inspection, so very recent enforcement actions may not yet be reflected. Data provided as-is. Report a data error.
Part of a larger organization
TETRA TECH, INC. is one of 50 establishments in our dataset that roll up under the parent organization TETRA TECH INC. TETRA TECH INC is a SEC public reporter (TTEK), with most recent reported revenue of $5.4B.
Federal enforcement records on TETRA TECH, INC. represent activity at this specific establishment. The full enforcement footprint of TETRA TECH INC across all 50 of its tracked locations is viewable on the parent profile.
Other establishments operated by TETRA TECH INC
- Tetra Tech — San Diego, CA — 2 federal records
- Tetra Tech — PASADENA, CA — 2 federal records
- Tetra Tech — Los Alamos, NM — 2 federal records
- Ardaman & Associates, Inc. — West Palm Beach, FL — 2 federal records
- TETRA TECH INC — REDDING, CA — 2 federal records
- Tetra Tech Inc — Albany, GA — 1 federal record
- TETRA TECH INC — OROVILLE, CA — 1 federal record
- Tetra Tech — Morris Plains, NJ — 1 federal record
- Tetra Tech — Boston, MA — 1 federal record
- Tetra Tech EC, Inc — San Diego, CA — 1 federal record
Other employers in Surveying and Mapping (except Geophysical) Services within CA
- PPI ENGINEERING INC — NAPA — 1 federal record
- CALVADA SURVEYING INC — POMONA — 1 federal record
- ASHBRITT INC — SANTA ROSA — 1 federal record
- CHRIS NELSON & ASSOCIATES, INC. — LOS ANGELES — 1 federal record
- LANDMARK SURVEYING SOLUTIONS INC — BEVERLY HILLS — 1 federal record
- D.WOOLEY & ASSOCIATES — TUSTIN — 1 federal record
- KCA ENGINEERING — SAN FRANCISCO — 1 federal record
- KELSURVEYS — COSTA MESA
- MASON BRUCE AND GERARD — FORT JONES
- D C SURVEYS — DUBLIN
Industry context
Within the surveying and mapping (except geophysical) services industry in CA, TETRA TECH, INC. ranks in the 63th percentile of OSHA violation frequency across 921 comparable establishments.
OSHA penalty totals rank in the 71th percentile of the same peer group.
The Bureau of Labor Statistics reports an industry-average Total Recordable Incident Rate (TRIR) of 0.6 for the surveying and mapping (except geophysical) services sector, with a Days Away, Restricted, or Transferred (DART) rate of 0.3. TETRA TECH, INC.'s self-reported DART rate is 0.69, which is above the industry average.
Activity timeline
No federal enforcement activity has been recorded against this establishment in the past 8 years.
Frequently Asked Questions
- What is TETRA TECH, INC.'s OSHA violation history?
- TETRA TECH, INC. has 1 OSHA inspection on record with 2 violations and $825 in total penalties.
- How does TETRA TECH, INC.'s safety record compare to its industry?
- TETRA TECH, INC. operates in the surveying and mapping (except geophysical) services industry. The industry average Total Recordable Incident Rate (TRIR) is 0.6. TETRA TECH, INC.'s self-reported DART rate is 0.69 compared to an industry average of 0.3.
- Has TETRA TECH, INC. had any workplace fatalities?
- Yes. Federal records show 1 fatality investigation involving TETRA TECH, INC..
About this data
This profile aggregates federal enforcement records on TETRA TECH, INC. of SANTA ROSA, CA from 17 federal data sources. Records were found in 4 sources: OSHA workplace safety inspections, NLRB labor relations cases, SEC XBRL companyfacts (parent financials), and BLS industry safety benchmarks. The remaining 13 sources were checked and found no matching records: WHD, MSHA, EPA, OFLC, OFCCP, FMCSA, USAspending, SAM.gov, CMS, CPSC, NHTSA, UVA, SEC enforcement.
Establishments are matched across agencies using normalized employer name, state, and ZIP code. The dataset was last refreshed on May 3, 2026. TETRA TECH, INC. resolves to the parent rollup TETRA TECH INC, which operates 50 establishments in our dataset. OSHA accident records on file for TETRA TECH, INC. include 1 fatality investigation.
This profile may be incomplete if TETRA TECH, INC.operates under multiple legal names, files under variations our entity-matching rules don't yet cover, or maintains records below current matching thresholds. To report a missing record or correction, email corrections@fastdol.com.