Industrial Stormwater General Permit
Ecology has issued a final modified Industrial Stormwater NPDES and State Waste Discharge General Permit May 16, 2012. The modified permit is effective July 1, 2012.
Purpose of the Permit Modification
The permit modification is necessary to address the April 25, 2011 order by the Washington State Pollution Control Hearings Board, which required significant changes to the sampling and corrective action requirements. Ecology has also made revisions to the effluent limits for fecal coliform that apply to approximately eighty facilities discharging to 303(d)-listed impaired waterbodies. Other minor changes were made in response to public comments and to correct various errors and typos.
Current Permit Documents
Contact Us - Contact your Permit Administrator for permit assistance or your Regional Office for site specific questions.
Permit & Documents - Permit documents, appeal documents, list of dischargers.
Permit Applications and Forms - Conditional No Exposure (CNE) application and eligibility criteria, public notice requirements.
Guidance - Engineering Reports, Developing a Stormwater Pollution Prevention Plan, FAQs, Reducing Zinc, How to Sample.
Historical Information - Public Comments from previous permits and other documents.
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