The Western Washington Phase II Municipal Stormwater Permit (NPDES permit) requires the City of Renton to implement a Stormwater Pollution Source Control (Source Control) program. The Source Control program is designed to serve as a partnership between businesses, property owners and the City of Renton to control pollutants at their source before they enter the City’s storm system through the application of Source Control Best Management Practices (BMPs). Source Control BMPs target pollutants like fertilizers, paint, oil, grease, and wash water that originate from daily site activities, spill incidents, improper disposal, and other indirect sources. By working together, this program will reduce the discharge of pollutants into surface water runoff and protect our local waterbodies.
The Source Control Program consists of three main components: Education, Inspections, and Enforcement. Technical assistance and education provided to businesses and property owners through this program will help them understand the important role they play in preserving our local waterbodies such as the Cedar River, Springbrook Creek and Lake Washington. Inspections will be performed at qualifying sites, with the goal of identifying potential pollutant sources and recommending activity specific BMPs. Failure to implement BMPs may lead to enforcement actions.
The following Source Control BMPs are the minimum measures required at every site:
-
Inspect, clean, and maintain your storm system regularly
-
Eliminate illicit connections to your storm system
-
Create a pollution prevention team
-
Develop a spill response plan
-
Train employees on the importance of pollution control measures and spill response
-
Keep dumpster areas clear of debris, lids closed, and replace containers that leak or have holes
Additional Source Control BMPs for specific businesses or activities are found in the 2021 King County Stormwater Pollution Prevention Manual linked below. Renton adopted this manual to guide its Source Control Program in June 2022. The manual references King County Water Quality code and lists King County personnel as contacts. Please refer to RMC 4-6-030 for the city's drainage and water quality standards. If you have any questions, please contact the city's source control inspector and not King County personnel.