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NM General Contractor: Site Safety and Environmental Compliance

NM General Contractor · Work through your exam, one topic at a time.

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Site Safety and Environmental Compliance

This domain tests OSHA construction standards (29 CFR 1926) as enforced under New Mexico's state plan, plus environmental obligations that apply on site: stormwater, air quality, asbestos and lead, and waste.

Core OSHA numbers

Fall protection is required at 6 ft in construction (10 ft for scaffolds). Excavations 5 ft or deeper need a protective system - sloping, benching, shoring, or a trench box - designed for the soil; a competent person inspects daily and after rain. Spoil and equipment stay at least 2 ft from the edge, and a ladder or ramp is required within 25 ft of lateral travel at 4 ft depth. Ladders extend 3 ft above the landing and are set at 4:1. Use GFCI protection or an assured equipment grounding conductor program. Hazard communication requires SDS access and training.

Reporting and records

Maintain the OSHA 300 log. Report a fatality within 8 hours and an in-patient hospitalization, amputation, or loss of an eye within 24 hours.

Environmental

Construction disturbing 1 acre or more needs NPDES coverage and a stormwater pollution prevention plan with erosion and sediment controls. Handle asbestos and lead under the applicable NESHAP and renovation rules, control silica dust, and manage spills and waste.

Worked example

A 6-ft-deep utility trench has vertical walls, spoil piled at the lip, no ladder, and no inspection log. Violations: no protective system at 5 ft or deeper; spoil within 2 ft of the edge; no means of egress within 25 ft; no competent-person inspection. Corrective action: install a trench box or slope to the soil's capacity, push spoil back at least 2 ft, set a ladder within 25 ft of workers, and document daily inspections.

Traps that cost marks

  • Using 6 ft as the excavation threshold instead of 5 ft.
  • Assuming a competent person is simply the superintendent without training or authority.
  • Missing the 8-hour and 24-hour reporting windows.
  • Assuming small sites need no SWPPP - 1 acre of disturbance triggers it.
  • Cutting concrete or masonry dry with no dust control.