Borrow Pit Operations JHA (Job Hazard Analysis / Activity Hazard Analysis)
Updated 2026-06-23
A Borrow Pit Operations JHA (Job Hazard Analysis / Activity Hazard Analysis) is the plan that keeps the crew working a borrow pit from being buried by a collapsing highwall, struck by the excavation and hauling equipment, or endangered by water that accumulates in the pit. Borrow pit operations excavate soil and rock from a source area (the borrow pit) to supply fill for embankments and grading — a continuous excavate-and-haul operation with highwalls, heavy equipment, and water accumulation. This guide walks through building a Borrow Pit Operations JHA that names the highwall, equipment, and water hazards and assigns the highwall, traffic, and water controls that hold up in the field.
Why borrow pit operations need their own JHA
A borrow pit is an excavation that supplies borrow material — soil, sand, gravel, or rock — for fills and grading elsewhere on or off the project. Operations involve continuously excavating the material with excavators and loaders, hauling it out, and progressively deepening and expanding the pit, creating highwalls (the vertical or steep excavated faces). The hazards resemble a small quarry or mass excavation: highwall collapse and material falling from the faces, the struck-by and rollover hazards of the continuous excavation and hauling equipment, water accumulation in the pit (drowning, equipment, and stability hazards), and dust and silica from the material. The highwalls and the continuous equipment operation justify a dedicated JHA.
Breaking borrow pit operations into steps
The steps for a Borrow Pit Operations JHA follow the operation:
- Plan the pit development, highwall design, and haul routes
- Excavate the borrow material with equipment
- Manage the highwalls and excavated faces
- Load and haul the material out
- Manage the equipment traffic and haul roads
- Manage water accumulation and drainage in the pit
- Manage dust and silica
- Progressively develop the pit per the plan
Each step carries a hazard, and the highwall stability and the equipment operation are where the most serious risks concentrate.
The hazards step by step
Highwall collapse and material fall
As the pit is deepened, highwalls (steep or vertical excavated faces) develop that can collapse or shed material onto workers and equipment at the base. The controls are designing and maintaining the highwalls at safe heights and angles (benching and sloping per the soil/rock and the regulations), keeping equipment and workers a safe distance from the base of highwalls, not undercutting the face, scaling or addressing loose and unstable material, and competent evaluation of the faces. A highwall that is too steep or too tall for the material is a collapse hazard, and workers and equipment at its base are exposed.
Equipment struck-by and rollover
The continuous excavation and hauling operation puts heavy equipment in motion, with struck-by, collision, and rollover hazards, and equipment operates on benches, ramps, and near the pit edges. The controls are a haul-road and traffic pattern, separating workers on foot from equipment, spotters and communication, operating within slope limits with seatbelts and ROPS, and keeping a safe distance from pit edges and highwall bases. (These follow the earthmoving fundamentals.)
Water accumulation
Borrow pits accumulate water — from rain, runoff, and groundwater — creating drowning hazards, destabilizing the highwalls and floor, and bogging equipment. The controls are managing water with drainage and pumping, not allowing deep water to accumulate where it is a drowning or stability hazard, recognizing that water saturates and destabilizes the walls and floor, and water-rescue provisions where deep water is present.
Dust and silica
Excavating and hauling borrow material generates dust, including respirable silica in silica-bearing material. The controls are dust suppression (watering haul roads and the operation), enclosed cabs with filtration for operators, and respiratory protection where silica exposure is significant.
A simple Borrow Pit Operations JHA structure
| Step | Hazard | Control | Standard |
|---|---|---|---|
| Plan pit | Highwall collapse | Design highwalls at safe height/angle, haul routes | OSHA 1926.651 |
| Excavate material | Highwall collapse | Don't undercut, distance from base, scale loose material | OSHA 1926.651 |
| Load and haul | Struck-by / rollover | Traffic pattern, spotters, slope limits, seatbelt/ROPS | OSHA 1926.602 |
| Manage edges/benches | Rollover / edge | Distance from edges and highwall base, stable benches | OSHA 1926.1000 |
| Manage water | Drowning / instability | Drainage and pumping, limit accumulation, water rescue | OSHA 1926.106 |
| Manage dust | Silica | Dust suppression, enclosed cabs, respiratory protection | OSHA 1926.1153 |
Highwall stability and the equipment operation
A Borrow Pit Operations JHA centers on highwall stability and the equipment operation. The highwall stability is the burial hazard — as the pit deepens, steep or vertical faces develop that can collapse or shed material onto workers and equipment at the base — so the highwalls are designed and maintained at safe heights and angles, not undercut, with equipment and workers kept clear of the base. The equipment operation is the struck-by and rollover hazard — the continuous excavate-and-haul operation with heavy equipment on benches, ramps, and near edges — controlled by traffic management, slope limits and seatbelts, and distance from edges and highwall bases. A JHA built on highwall stability and a managed equipment operation, with water and dust controls, addresses the hazards that define borrow pit operations.
From the field: what actually goes wrong
In fourteen years across federal, heavy civil, and industrial projects, a borrow pit operates like a small quarry, and the highwall is its defining hazard. As the pit is excavated deeper, the faces become highwalls — steep or vertical — that can collapse or shed material onto whatever is at the base, and a worker or equipment at the bottom of an unstable highwall is in the burial zone. The controls are designing and maintaining the highwalls at safe heights and angles for the material, not undercutting the face (which creates an overhang ready to fail), keeping equipment and workers a safe distance from the base, and addressing loose material. A highwall that is cut too steep or too tall for the soil or rock is a collapse waiting to happen.
The equipment operation and the water are the other hazards. The continuous excavate-and-haul cycle puts heavy equipment in motion on benches, ramps, and near edges, with the struck-by and rollover hazards of all earthwork — managed by traffic patterns, slope limits, seatbelts, and distance from edges. The water is the hazard people forget: borrow pits accumulate water from rain, runoff, and groundwater, and that water is a drowning hazard, destabilizes the highwalls and floor, and bogs equipment. On the projects I have run, the water is drained and pumped, deep accumulation is not allowed where it endangers the crew, and the dust and silica from the material are controlled with suppression and enclosed cabs. The JHA that manages the highwalls and the equipment operation is the one that protects the borrow pit crew.
The bottom line
A Borrow Pit Operations JHA names the highwall, the equipment, and the water hazards with specific controls — highwalls designed and maintained at safe heights and angles with workers and equipment clear of the base, traffic management and slope/seatbelt controls for the equipment, and drainage and rescue provisions for water accumulation. The highwalls and the continuous equipment operation are the defining hazards. The JHA that manages both is the one that protects the crew.
Frequently asked questions
What is a highwall and why is it hazardous?
A highwall is a steep or vertical excavated face that develops as a borrow pit is deepened, and it can collapse or shed material onto workers and equipment at the base. Controls are designing and maintaining highwalls at safe heights and angles for the material, not undercutting the face, keeping equipment and workers a safe distance from the base, scaling loose material, and competent evaluation of the faces.
What equipment hazards arise in borrow pit operations?
The continuous excavation and hauling operation puts heavy equipment in motion with struck-by, collision, and rollover hazards, operating on benches, ramps, and near pit edges. Controls are a haul-road and traffic pattern, separating workers on foot from equipment, spotters and communication, operating within slope limits with seatbelts and ROPS, and keeping a safe distance from edges and highwall bases.
Why is water a hazard in borrow pits?
Borrow pits accumulate water from rain, runoff, and groundwater, creating drowning hazards, destabilizing the highwalls and floor, and bogging equipment. Controls are managing water with drainage and pumping, not allowing deep water to accumulate where it is a drowning or stability hazard, and water-rescue provisions where deep water is present.
Does borrow pit work generate silica?
Yes. Excavating and hauling borrow material generates dust, including respirable silica in silica-bearing material. Controls are dust suppression (watering haul roads and the operation), enclosed cabs with filtration for operators, and respiratory protection where silica exposure is significant.
Related JHAs
- Earthmoving Operations JHA — the excavate-and-haul operation
- Embankment Construction JHA — using the borrow material in fills
- Excavation and Trenching JHA — excavation and face stability
- Rock Excavation JHA — excavating rock borrow material
Written by Mustafa Tok, CSP, ASP, CHST — OSHA Authorized Outreach Trainer with 14+ years of international construction safety experience across federal, heavy civil, and industrial projects.