Jobsite Safety and Regulatory Compliance
Crew safety
OSHA basics govern the site: PPE, hazard communication with accessible SDS sheets, hearing protection around equipment, respiratory protection for dust and silica, and electrical safety with GFCI protection. Call 811 before any digging - typically at least two to three business days ahead - and respect the markings. Trench protective systems (shoring, sloping, shielding) are required at 5 feet of depth, not 4. Ladders use the 4:1 rule with three points of contact. Heat illness prevention means water, rest, shade, and acclimatization. Equipment requires ROPS and seatbelts; chainsaws require attention to kickback zone.
Environmental and business compliance
Stormwater permits (NPDES/SWPPP) require erosion and sediment controls and inspections. Wetlands, floodplains, and endangered species trigger separate approvals. Pesticide application requires licensing; business licensing, workers' compensation, and DOT rules govern transport and crews. Many jurisdictions require a certified landscape contractor for projects over a dollar threshold.
Worked example
A crew plans to dig footings 48 inches deep for a pergola. Two issues: the 811 locate ticket must be active, and any excavation reaching 5 feet requires a protective system - 48 inches is under that trigger, but the spoil pile and adjacent trench can still create a cave-in hazard, so keep spoils back and inspect daily.
Traps
Confusing the 4-ft and 5-ft trench thresholds; digging before the locate ticket expires or before it is issued; skipping the SWPPP inspection log.