ALTADENA, CA —
OSHA Inspection: TETRA TECH INC.
Complaint inspection · Health discipline
At a glance
On , OSHA opened a complaint health inspection of TETRA TECH INC. in 2450 LAKE AVE., ALTADENA, CA 91001 (NAICS 236220). OSHA activity number 348142308.
OSHA opens inspections for many reasons — routine scheduling under a national or local emphasis program, an employee complaint or referral, or a follow-up after a reported injury. Opening or conducting an inspection is not itself an allegation or a finding that this employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.
Where did this inspection happen?
- Establishment
- TETRA TECH INC.
- Site address
- 2450 LAKE AVE.
- City
- ALTADENA
- State
- CA
- ZIP
- 91001
- Mailing
- 3475 EAST FOOTHILL BLVD., PASADENA, CA 91106
What kind of inspection was it?
- Inspection type
- Complaint (B)
- Scope
- Partial (B)
- Discipline
- Health
- Advance notice
- No
- Union status
- B
When did the case open and close?
- Opened
- Closing conference
- Last modified
- Data loaded
Establishment context
- NAICS code
- 236220
- Employees
- 2630
- Ownership type
- A
Citations
4 citations on file for this inspection.
3203(B)
- Issued
- Sep 23, 2025
- Abate by
- Oct 23, 2025
- Penalty
- Initial $450 · Current $450
Recent events (2)
- — C (O) $450
- — Z (O) $450
3203(A)(7)(F)
- Issued
- Sep 23, 2025
- Abate by
- Oct 23, 2025
- Penalty
- Initial $900 · Current $900
Recent events (2)
- — C (O) $900
- — Z (O) $900
3395(I)
- Issued
- Sep 23, 2025
- Abate by
- Oct 23, 2025
- Penalty
- Initial $900 · Current $900
Recent events (2)
- — C (O) $900
- — Z (O) $900
5144(G)(1)(A)1.
- Issued
- Sep 23, 2025
- Abate by
- Oct 23, 2025
- Penalty
- Initial $900 · Current $900
Recent events (2)
- — C (O) $900
- — Z (O) $900
More inspections at Tetra Tech INC.
View Tetra Tech INC.'s full OSHA safety record →
More inspections in this industry (NAICS 236220)
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Source
This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). The original IMIS detail view is available at OSHA's Establishment Search for activity number 348142308.
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