Denison, TX SWPPP & Stormwater Requirements

What does Denison require for SWPPP compliance?

In Denison, operators of construction activities that disturb five or more acres — or that are part of a larger common plan of development that will disturb five or more acres — must develop a stormwater pollution prevention plan and submit a copy of their notice of intent to the city at least two days prior to excavation.

The paperwork reaches the city before the excavator does — two days is not much margin, so the submittal belongs in the mobilization plan.

Smaller sites still post paper

In Denison, operators of construction activities that disturb at least one but less than five acres must develop a stormwater pollution prevention plan and post a construction site notice at least two days prior to excavation. The notice on the fence is the city's first checkpoint, and it is the first thing an inspector looks for.

The ordinance behind the process

Denison's Erosion Control and Illicit Discharge Ordinance — Code of Ordinances Chapter 26, Article II, Division 6 — requires operators of construction sites one acre and greater to select, install, implement, and maintain stormwater controls, and new construction may not begin until after review and approval of the application. Denison's city stormwater inspectors conduct site inspections during the active construction phase, issue enforcement as needed, and receive annual inspector training. Review first, dirt second — and the people checking the controls are trained to the program every year.

The state permit still applies

The city's steps 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. City review gets the project to the starting line; the state permit's obligations run 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.