OKR10 Construction Stormwater
Stormwater runoff from construction sites carries significant amounts of sediment and other pollutants which have the potential to harm streams, lakes, and wetlands. As stormwater flows over a construction site, it can pick up pollutants like sediment, debris, and chemicals, and transport these to a nearby municipal storm sewer system or directly to a stream, lake, or wetland. Sediment in waterbodies from construction sites can reduce the amount of sunlight reaching aquatic plants, clog fish gills, smother aquatic habitat and spawning areas, and high volumes of runoff can cause stream bank erosion and impede navigation. Controlling erosion and sediment can significantly reduce the amount of sedimentation and other pollutants transported by stormwater runoff from construction sites. The Oklahoma Pollution Discharge Elimination System (OPDES) stormwater program, authorized by the NPDES stormwater permitting program, requires construction site owners/operators to obtain coverage under the OPDES Construction General Permit OKR10 to discharge stormwater from their construction sites and implement appropriate pollution prevention controls/techniques to minimize pollutants and reduce stormwater runoff.
A permit is required before construction activity can start at a site. Discharge of stormwater from a construction site without first obtaining a permit from DEQ is in violation of Title 27A O.S. §2-6-205 of the Oklahoma Statutes. As part of the application, the owner and/or operator must develop and implement a Stormwater Pollution Prevention Plan (SWP3) to minimize pollutants and reduce stormwater runoff. The applicant may need additional permit coverage from the city/county government for the construction site. The applicant must check with them before submitting a Notice of Intent (NOI) to DEQ.
For more information about construction stormwater, please view: OKR10 Construction Activities Fact Sheet
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