Establishment profile
TETRA TECH INC.
2450 LAKE AVE., ALTADENA, CA, 91001
Operated by TETRA TECH INC · 1 of 56 establishments
236220 — Commercial and Institutional Building Construction
EIN 953983702
Summary
TETRA TECH INC. has accumulated 4 OSHA violations across 1 inspection over 1 year of recorded history, with $3,150 in total assessed penalties.
The establishment sits in the 85th percentile for violations within its industry-state peer group of 9,294 employers. The most recent enforcement activity was recorded 1 year ago.
Federal records were found in 2 of 15 sources. Sources without matching records returned empty for this establishment.
Agency coverage
TETRA TECH INC. appears in OSHA workplace safety and NLRB labor relations records only. No matching records were found in WHD wage enforcement, MSHA mine safety, EPA environmental compliance, OFLC visa and labor certification (historical), FMCSA motor carrier registration, SAM.gov federal debarment, CMS nursing home enforcement, CPSC product recalls, or NHTSA vehicle recalls.
OSHA workplace safety
100% of inspections at this establishment produced violations,
Most-cited OSHA standards
Top OSHA standards cited at this employer, ranked by citation count. Standards (CFR sections) cluster citations into safety themes -- machine guarding, lockout-tagout, hazard communication, fall protection, process safety, etc. A concentration on one or two sections reveals a pattern that individual citations don’t. 4 distinct standards shown · 4 citations in this view · $3,150 in penalties.
| CFR section | Citations | Inspections | Total penalty | First cited | Last cited |
|---|---|---|---|---|---|
| 3203(A)(7)(F) | 1 | 1 | $900 | Sep 2025 | Sep 2025 |
| 3395(I) | 1 | 1 | $900 | Sep 2025 | Sep 2025 |
| 5144(G)(1)(A)1. | 1 | 1 | $900 | Sep 2025 | Sep 2025 |
| 3203(B) | 1 | 1 | $450 | Sep 2025 | Sep 2025 |
Source: OSHA inspection citations (violation_detail). CFR section codes can be looked up at osha.gov/laws-regs for the formal standard text. Per-inspection detail and the specific violation descriptions are available by expanding individual inspections below.
Peer comparison
Worse on violations than most other employers in NAICS 2362 within CA. Peer group: 9,294 employers. This establishment has 4 OSHA violations; peer median is 1.
Safety self-report (OSHA 300A)
Recordable injury rates the employer filed with OSHA’s Injury Tracking Application. DART covers cases with days away, restricted, or transferred; TRIR is the total recordable case rate.
Reported for 151 average annual employees at this establishment.
Source: OSHA ITA Form 300A (employer self-reported). Rates are per 100 full-time equivalent workers. Establishments below the ~10-FTE threshold are not required to report.
Industry benchmark
BLS rates reflect industry-wide averages. Self-reported figures come from OSHA’s Injury Tracking Application; absence of self-reported data does not necessarily indicate non-compliance — many establishments fall below the ITA reporting threshold.
Inspection breakdown
Complaint- and accident-triggered inspections are stronger risk signals than routine planned inspections.
OSHA severe injury reports
No severe injury reports (hospitalization, amputation, or loss of an eye) on file under 29 CFR 1904.39 for TETRA TECH INC.. Verify directly with Occupational Safety and Health Administration →
Activity timeline
Most recent federal enforcement activity recorded 1 year ago. Data on this page is refreshed weekly.
Wage & Hour Division (WHD)
No WHD wage, overtime, or child-labor enforcement cases on file for TETRA TECH INC.. Verify directly with Wage and Hour Division →
Mine safety (MSHA)
No MSHA mine safety violations on file for TETRA TECH INC.. Verify directly with Mine Safety and Health Administration →
Labor relations (NLRB)
Company-level in CA — for TETRA TECH INC, not this location alone
National Labor Relations Board — unfair labor practice charges and union representation cases. The NLRB records cases at the company/regional level (no worksite address), so these are matched by company name and state and may span other TETRA TECH INC locations in the same state.
NLRB cases
National Labor Relations Board cases involving this employer. Includes unfair labor practice (ULP) filings and representation election proceedings. NLRB enforcement is process-driven; no per-case monetary penalty is assessed (remedies are case-by-case backpay orders, posting requirements, election re-runs, etc.). 2 cases · 2 ULP
| Case number | Type | Filed | Closed | Status | Region |
|---|---|---|---|---|---|
| 32-CA-117661 | Unfair labor practice | Nov 2013 | Jan 2014 | Closed | Region 32, Oakland, California |
| 32-CA-110949 | Unfair labor practice | Aug 2013 | Apr 2015 | Closed | Region 32, Oakland, California |
Source: NLRB case files. Rows shown are those the agency has published. Region numbers (1–31) correspond to NLRB's geographic offices.
Visa & labor certification (OFLC) — historical
No H-1B, H-2A, or H-2B labor condition applications on file (historical data only — DOL ended OFLC publication) for TETRA TECH INC.. Verify directly with Office of Foreign Labor Certification →
Environmental compliance (EPA)
No EPA inspections or formal enforcement actions on file for TETRA TECH INC.. Verify directly with Environmental Protection Agency →
Federal contracts
No federal contracts are recorded to this specific location.
Consolidated across all USAspending recipient entities under this corporate parent — not attributable to this single location.
Federal contract activity for the parent corporation. Source: USAspending.gov, net obligations. Recipient address is the SAM registration / HQ address, not necessarily the worksite.
Inspection history
| Date | Trigger | Violations | Serious | Penalty | |
|---|---|---|---|---|---|
| 2025-03-27 | Complaint | 4 | — | $3,150 |
Source: OSHA IMIS. Citation amounts reflect initially assessed penalties; final amounts after appeal may differ.
In the news
Part of a larger organization
TETRA TECH INC. is one of 56 establishments rolled up under the parent organization TETRA TECH INC.
Federal enforcement records on this page represent activity at this specific establishment only. The full enforcement footprint of TETRA TECH INC across all 56 of its tracked locations is viewable on the parent profile.
Other employers in this industry and state
Other employers in commercial and institutional building construction within CA, ordered by federal enforcement volume:
- PERFORMANCE CONTRACTING INCRANCHO CORDOVA — 3 federal enforcement records
- BALFOUR BEATTY INFRASTRUCTURELOS ANGELES — 3 federal enforcement records
- ROMERO GENERAL CONSTRUCTION CORPORATIONSAN DIEGO — 3 federal enforcement records
- DIEDE CONSTRUCTION INCLATHROP — 3 federal enforcement records
- DIEDE CONSTRUCTION, INC.FREMONT — 3 federal enforcement records
- SUNDT CONSTRUCTION, INC.REDDING — 3 federal enforcement records
- BURKETT'S POOL PLASTERING, INC.RIPON — 3 federal enforcement records
- PENHALL COMPANYANAHEIM — 3 federal enforcement records
- AMES CONSTRUCTION, INCMENIFEE — 3 federal enforcement records
- FEDERAL SOLUTIONS GROUPDUBLIN — 3 federal enforcement records
Other locations under this parent
Other establishments operated by TETRA TECH INC, ordered by federal enforcement volume:
- Tetra TechLos Alamos, NM — 2 federal enforcement records
- ARDAMAN & ASSOCIATES, INC.QUINCY, FL — 2 federal enforcement records
- Tetra TechPASADENA, CA — 2 federal enforcement records
- TETRA TECH INCREDDING, CA — 2 federal enforcement records
- TETRA TECH, INC.SANTA ROSA, CA — 2 federal enforcement records
- Tetra TechSan Diego, CA — 2 federal enforcement records
- TETRA TECH INCSAN BERNARDINO, CA — 2 federal enforcement records
- TETRA TECH INCOROVILLE, CA — 1 federal enforcement record
- TETRA TECH EC INCGHENT, KY — 1 federal enforcement record
- TETRA TECH INCIRVINE, CA — 1 federal enforcement record
Related searches
- All TETRA TECH INC locationsParent rollup
- Commercial and Institutional Building ConstructionAll employers in this industry
- Employers in CAState-wide enforcement data
- Commercial and Institutional in CAIndustry × state cross-filter
About this data
This profile aggregates federal enforcement records on TETRA TECH INC. from every major federal compliance and enforcement source. OSHA workplace safety inspections, WHD wage cases, MSHA mine safety, EPA environmental enforcement, NLRB labor relations, OFLC visa/labor certification, FMCSA motor carrier registration, SAM.gov debarments, CMS nursing-home records, BLS industry safety benchmarks, OSHA ITA self-reported injury rates, SEC enforcement and financial disclosures, CPSC and NHTSA recalls.
Establishments are matched across agencies using normalized employer name, state, and ZIP code. This establishment resolves to the parent rollup TETRA TECH INC, which operates 56 establishments in our dataset.
OSHA citations typically appear 3–8 months after the inspection, so very recent enforcement actions may not yet be reflected. Profiles may be incomplete if the establishment operates under multiple legal names or files under variations our entity-matching rules don’t yet cover. To report a missing record or correction, email corrections@fastdol.com.
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Contact sales →Frequently asked
- What is TETRA TECH INC.'s OSHA violation history?
- TETRA TECH INC. has 1 OSHA inspection on record with 4 violations and $3,150 in total penalties.
- How does TETRA TECH INC.'s safety record compare to its industry?
- TETRA TECH INC. operates in the commercial and institutional building construction industry. The industry average Total Recordable Incident Rate (TRIR) is 1.9. TETRA TECH INC.'s self-reported DART rate is 0.69 compared to an industry average of 1.2.