Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,197,549Inspections Most recent open 2026-08-27 Last loaded 2026-08-31

OSHA Inspection: KATERRA CONSTRUCTION LLC

Unprogrammed Related inspection · Safety discipline

On , OSHA opened an unprogrammed Related safety inspection of KATERRA CONSTRUCTION LLC in 1570 GROVE ST, DENVER, CO 80204 (NAICS 236116). OSHA activity number 344711056.

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employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.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
1570 GROVE ST
City
DENVER
State
CO
ZIP
80204
Mailing
2150 E. COMMON AVE, CENTENNIAL, CO 80122
Inspection type
Unprogrammed Related (G)
Scope
Partial (B)
Discipline
Safety
Advance notice
No
Union status
Non-union (B)
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
236116
Employees
86
Ownership type
Private (A)

3 citations on file for this inspection.

1926.651 H01

Serious Gravity 5 1 instance 9 exposed
Issued
Aug 3, 2020
Abate by
Sep 8, 2020
Penalty
Initial $9,639 · Current $9,639
29 CFR 1926.651(h)(1): Employees were working in excavations in which there was accumulated water, or excavations in which water was accumulating, and adequate precautions had not been taken to protect employees against the hazards posed by water accumulation:    (a) Katerra Construction LLC at 1570 Grove St., Denver, CO: On and around March 25, 2020, the controlling and exposing employer did not ensure that each employee working inside an excavation that was approximately 18 feet wide and varied from 6.4 to 9.8 feet in depth was protected from cave-in due to water accumulation, in that ground water was accumulating in the bottom of an excavation. This condition exposed employees and subcontractor employees to crushing hazards by excavation wall cave-in.
Recent events (3)
  • · F (S) $9639
  • · C (S) $9639
  • · Z (S) $9639

1926.652 B02

Serious Gravity 5 1 instance 5 exposed
Issued
Aug 3, 2020
Abate by
Sep 8, 2020
Penalty
Initial $0 · Current $0
29 CFR 1926.652(b)(2):  Maximum allowable slopes, and allowable configurations for sloping and benching systems, were not determined in accordance with the conditions and requirements set forth in Appendices A and B to this subpart:  (a) Katerra Construction LLC at 1570 Grove St., Denver, CO: On and around March 25, 2020, the controlling and exposing employer did not ensure that each employee working inside an excavation, where groundwater had accumulated, that was approximately 18 feet wide and varied from 6.4 to 9.8 feet in depth was protected from cave-in, in that the excavation was sloped at an angle greater than the 34 degree maximum allowable slope for type C soil and that the excavation was benched, which is prohibited by Appendix B for type C soil. This condition exposed employees and subcontractor employees to crushing hazards by excavation wall cave-in.
Recent events (3)
  • · F (S) $0
  • · C (S) $0
  • · Z (S) $0

1926.651 K01

Other-than-serious Gravity 5 1 instance 9 exposed
Issued
Aug 3, 2020
Abate by
Dec 17, 2020
Penalty
Initial $9,639 · Current $3,361 Reduced
29 CFR 1926.651(k)(1): Daily inspections of excavations, the adjacent areas, and protective systems were not made by a competent person for evidence of a situation that could have resulted in possible cave-ins, indications of failure of protective systems:  (a) Katerra Construction LLC at 1570 Grove St., Denver, CO: On and around March 25, 2020, the controlling and exposing employer did not ensure that daily inspections of an excavation that was approximately 18 feet wide and varied from 6.4 to 9.8 feet in depth were made by a competent person for evidence of a situation that could have resulted in a hazardous condition, in that the competent person did not identify that submerged soil must be classified as type C soil and in that the competent persons were not conducting manual soil analysis during excavation inspections at the start of the shift or when conditions affecting the soils classification changed such as soil submerged with water. This condition exposed four employees and five subcontractor employees to crushing hazards by excavation wall cave-in.
Recent events (3)
  • · F (O) $3361
  • · C (S) $9639
  • · Z (S) $9639

View Katerra Construction LLC's full OSHA safety record →

This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). OSHA publishes its own view of this case as inspection number 344711056.

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