The department will adopt requirements identifying BMPs for any activity, operation, or facility which may cause or contribute to pollution or contamination of stormwater, the storm drain system, or waters of the U.S. The owner or operator of a commercial or industrial establishment shall provide, at the owner's own expense, reasonable protection from the accidental discharge of prohibited materials or other wastes into the MS4 or watercourses through the use of these structural and nonstructural BMPs. Further, any person responsible for a property or premises that is or may be the source of an illegal discharge, may be required to implement, at said person's expense, additional structural and nonstructural BMPs to prevent the further discharge of pollutants to the municipal separate storm sewer system. Compliance with all terms and conditions of a valid MPDES permit authorizing the discharge of stormwater associated with industrial activity, to the extent practicable, is deemed compliance with the provisions of this section. Adopted BMPs shall be part of a stormwater pollution prevention plan (SWPPP) as necessary for compliance with requirements of the MPDES permit. (Ord. 3120, 12-21-2009)