Section 402 (p) of the Federal Clean Water Act requires certain industries to obtain a National Pollutant Discharge Elimination System (NPDES) permit. Specifically, industries that are categorized under Standard Industrial Classification (SIC) codes and those whose stormwater is discharged into surface water or a storm drain system are required to have a permit. In California, these industrial facilities can achieve compliance by applying for coverage under California’s General Permit for Stormwater Discharges Associated with Industrial Activities (Industrial General Permit), or by applying for an individual NPDES Permit.
With the upcoming rainy season, all SoCal Industrial Storm Water General Permit Dischargers should understand the requirements for compliance during upcoming storms. The following are criteria that you should consider to ensure you stay in compliance:
Remember to note your facility operating hours in your Stormwater Pollution Prevention Plan – you may be required to collect a sample during these hours regardless if the discharge started during your facility’s scheduled operating hours or not.