Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,189,992Inspections Most recent open 2026-07-18 Last loaded 2026-07-22

OSHA Inspection: CORSTONE CONTRACTORS LLC

Referral inspection · Safety discipline

On , OSHA opened a referral safety inspection of CORSTONE CONTRACTORS LLC in 9820 STATE HWY 99, PROBERTA, CA 96078 (NAICS 236220). OSHA activity number 342707270.

What this inspection record means

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employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.

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Site address
9820 STATE HWY 99
City
PROBERTA
State
CA
ZIP
96078
Mailing
1910 BICKFORD AVE, STE A, SNOHOMISH, WA 98290
Inspection type
Referral (C)
Scope
Partial (B)
Discipline
Safety
Advance notice
No
Union status
B
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
236220
Employees
5
Ownership type
A

1 citation on file for this inspection.

3648(O)

Serious Gravity 10 1 instance 1 exposed
Issued
Dec 15, 2017
Penalty
Initial $3,150 · Current $1,800 Reduced
Recent events (3)
  • — F (S) $1800
  • — C (S) $3150
  • — Z (S) $3150

View Corstone Contractors LLC's full OSHA safety record →

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 342707270.

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