Does OSHA Require a Written Daily Trench Inspection?

Rain stops the trench crew at 1:30. The morning checklist is signed and clipped to the gang box. Before anyone climbs back down, the competent person inspects the excavation again, because 29 CFR 1926.651(k)(1) requires an inspection after every rainstorm. That's the part OSHA requires. The second signature on the checklist isn't. Paragraph (k) never asks for a written log, and the difference matters when someone hands you a form labeled "OSHA-required daily inspection".

OSHA requires a competent person to inspect excavations daily before work, as needed during the shift, and after every rainstorm or other hazard-increasing event, under 29 CFR 1926.651(k)(1). It prescribes no written log. If the inspection finds a hazard, exposed employees are removed until precautions are taken, under 1926.651(k)(2).

At a glance: Who: a competent person (1926.650(b)). When: before work, as needed during the shift, after every rainstorm or hazard-increasing event, when exposure can reasonably be anticipated (1926.651(k)(1)). What: the excavation, adjacent areas, protective systems. If a hazard is found: remove exposed employees until precautions are taken ((k)(2)). In writing? Not required by (k); often required by contracts and company procedures.

What 1926.651(k)(1) requires

The inspection covers three things: the excavation, the adjacent areas and the protective systems. The competent person looks for evidence of a situation that could result in a cave-in, indications of failure of protective systems, hazardous atmospheres, and other hazardous conditions. Looking at the trench floor from the edge doesn't cover that.

The timing has three triggers. Before work starts. As needed throughout the shift. After every rainstorm or other hazard-increasing occurrence. All three apply when employee exposure can reasonably be anticipated. "Once a day" is a summary people use, and it leaves out two of them.

There's no depth threshold in paragraph (k). A four-foot trench with a crew in it gets inspected. The trenching and excavation guide covers protective systems and access.

Who inspects

29 CFR 1926.650(b) defines the competent person as one who is capable of identifying existing and predictable hazards in the surroundings, or working conditions that are unsanitary, hazardous or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them. Two parts: the knowledge and the authority. A foreman who knows the soil but can't stop the work doesn't qualify. Neither does a manager with authority who can't read a trench wall.

OSHA doesn't certify competent persons; the employer designates them. The competent person designation guide covers what a designation should show.

After rain, and other changes

Rain is named in 1926.651(k)(1). The competent person looks again at the walls, the spoil, the protective system and the adjacent area before the crew returns. Water has its own rules in 1926.651(h): no work in excavations with accumulating water without adequate precautions, a competent person monitoring any water removal equipment under (h)(2), and inspection where heavy-rain runoff can reach the excavation under (h)(3).

Other changes call for a look too: a loaded dump truck parked near the edge, spoil pushed closer during the afternoon, water seeping in, a shoring member that moved. Spoil and equipment stay at least two feet back from the edge, or behind retaining devices, under 1926.651(j)(2). Where a hazardous atmosphere exists or could reasonably be expected, testing is required before employees enter excavations deeper than four feet, under 1926.651(g)(1)(i).

When the inspection finds a hazard

Under 29 CFR 1926.651(k)(2), when the competent person finds evidence of a possible cave-in, indications of failure of a protective system, a hazardous atmosphere or another hazardous condition, exposed employees are removed from the hazardous area until the necessary precautions have been taken. The authority to do that on the spot is part of the definition in 1926.650(b).

So the order is: find, remove, fix, then let the crew back in. If you write it down, write it in that order. A single "resolved" box doesn't tell the next shift whether the crew came out before the fix.

Is it required in writing?

Not by paragraph (k). It tells you which inspections happen and what follows when they find a hazard. It doesn't prescribe a form, a signature or how long to keep anything, and borrowing the five-year retention of the injury records under 1904.33 for trench notes mixes two unrelated rules.

Writing it down is still a good idea, and often a contract requirement. Owners and general contractors ask for daily excavation inspection records, and many company procedures require them. Label each requirement with its real source: the contract, the company, or a State Plan.

A useful note says:

OSHA's daily excavation checklist eTool is a good field aid for the competent person. Use it to support the inspection, not as proof the excavation is safe because every box is ticked.

How HazComFast keeps the daily inspection in front of the crew

In HazComFast, each excavation has its permit, with its location, dimensions, soil type and the competent person named on it. The permits page shows how many excavations are active and flags "Daily Inspection Required" until today's inspection is recorded. "Record Daily Inspection" adds the competent person's note to the permit, with its date, so the morning check and the post-rain check sit with the excavation they belong to.

Related: Trenching and excavation safety · The trench geometry problem · Does OSHA certify competent persons?

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Sources & verification: 29 CFR 1926.650(b); 1926.651(g)(1)(i), (h)(1) to (h)(3), (j)(2), (k)(1), (k)(2); 1904.33; OSHA daily excavation checklist eTool. General guidance, not legal advice.*