Sherman, TX SWPPP & Stormwater Requirements
Updated August 2026
Sherman writes its own construction-runoff rules, and the details below come straight from the city's own code.
What does Sherman require for SWPPP compliance?
The city's own article covers sizes the state permit never reaches. In Sherman, operators of construction sites of less than one acre that are not required to comply with the TPDES general permit must prepare a limited pollution prevention plan for submission at the time of application for a building permit.
The sub-acre plan is Sherman's own invention — it arrives with the building permit application, not after.
The clocks run faster here
Sherman requires soil to be stabilized within five days of clearing or inactivity in construction, using recommended methods described in the construction site BMP manual. That is nine days tighter than the state's standard schedule — a crew that plans stabilization the Sherman way never has to ask which clock governs.
Design to the regional manual, phase the big sites
In Sherman, grading, erosion control practices, sediment control practices, and waterway crossings must meet the design criteria in the most recent version of the North Central Texas Stormwater Quality Construction Site BMP Manual. Sherman requires phasing on all sites disturbing greater than thirty acres, with the size of each phase established at plan review and as approved by the city. The manual is on file at development services, and the phasing line gets drawn at plan review — both belong in the bid, not the punch list.
Trees are part of the dirt work
For trees being preserved for credits in Sherman, protective fencing must be installed at the location of the tree's dripline. In Sherman, cut or fill greater than four inches in depth around the base of a preserved tree, or the severing of major roots, is considered critically altering the tree. The fencing goes up before the equipment moves, and a grade change most crews would not notice is enough to count against a preserved tree.
The state permit still applies
The city's rules sit on top of the state's, not in place of them. A stormwater pollution prevention plan (SWP3) must be prepared and implemented before construction activities begin. TXR150000's standard schedule requires construction site inspections at least once every 14 calendar days and within 24 hours of the end of a storm event of 0.5 inches or greater. The city article and the state permit run together for the life of the disturbance.
Inspections and the record
The operator owns the inspection record from first disturbance to final stabilization. Terradyne provides routine SWPPP inspection reports with cloud-based client access. See SWPPP Inspections for how the program works, and Silt Fence Installation for the perimeter the reviewers will look at first.
Check before you mobilize
Ordinances and city standards get revised; confirm the current documents with the city before you mobilize. For other North Texas cities, start at Local Compliance.
Frequently Asked Questions
Does a small Sherman project need a stormwater plan?
Yes — below the state threshold, Sherman requires its own limited pollution prevention plan, submitted with the building permit application, covering the erosion, sediment, and pollution-prevention controls for the site.
How fast does disturbed ground have to be stabilized in Sherman?
Within five days of clearing or of inactivity, using methods from the construction-site BMP manual the city keeps on file — a faster clock than the state's standard schedule.
What protects preserved trees on a Sherman site?
Protective fencing at the dripline for trees preserved for credits — and the code treats cut or fill over four inches at the base, or severing major roots, as critically altering the tree.
Request a bid
Send your Sherman project's plans to bids@terradynegroup.com or call (214) 878-7392 for SWPPP and erosion control support. Tell us the acreage and the schedule, and we will bring the plan, the controls, and the inspection cadence the city expects.