Excavation Permits and Trench Safety on a Waco Job Site

Published July 1, 2026

Breaking ground in Waco looks simple until an inspector stops the job or a utility line gets cut. Most of that risk comes down to a few code steps that are easy to plan for and expensive to skip. Here is how the permit, safety, and stormwater pieces fit together on a McLennan County site.

Call 811 Before Anything Moves

The first call is not to the excavator, it is to 811. Texas law requires a utility locate before you dig, and the request is free. File it at least two business days ahead so the utilities can mark gas, water, and electric lines across the parcel. Hitting an unmarked line is dangerous and costly, and it is entirely avoidable. Every dig we run starts here, no exceptions.

Know When a Trench Needs a Protective System

Soil is heavier than it looks, and a wall can fail without warning. Under OSHA 29 CFR 1926 Subpart P, any trench five feet deep or greater needs a protective system, which means a trench box, hydraulic shoring, or benching and sloping laid back to the angle the soil allows. A competent person has to inspect the excavation daily before anyone enters. If your contractor cannot tell you which protective system they will use, keep looking. Our utility trenching crews set the box or shoring before the first worker steps in.

Line Up the Permit and Grading Plan Early

Most site work in Waco needs a permit, and larger jobs need an engineered grading plan and a stormwater plan on file. Sorting that out before the machines arrive keeps an inspection from stalling the schedule. Dig to the surveyed elevations the plan specifies, not close to them, because a pad that comes in high or low shows up at the first inspection.

Keep Sediment on the Lot

Any site that disturbs one acre or more falls under a SWPPP and the EPA NPDES permit. That means silt fence, inlet protection, and erosion blankets installed before clearing and maintained through the job. It keeps mud out of the storm drains and keeps you off the wrong side of a compliance notice.

Document the Compaction

When the fill goes back in, density is what matters. Structural fill compacted in controlled lifts to 95 percent of maximum dry density, verified with a Standard Proctor (ASTM D698) test, keeps a slab or footing from settling later. Save those reports, because the building inspector and the general contractor will both ask for them before sign off.

Planning a dig near Waco and want it done to code the first time? Reach Mauricesklar through our contact us page or call (254) 987-3694 for a site walk and a written estimate.