Publication Summary

On August 21, 2002, Ecology reissued the Industrial Stormwater General Permit, a National Pollutant Discharge Elimination System (NPDES) and state waste discharge baseline general permit for stormwater discharges associated with industrial activities in Washington State.

On August 21, 2002, Ecology reissued the Industrial Stormwater General Permit, a National Pollutant Discharge Elimination System (NPDES) and state waste discharge baseline general permit for stormwater discharges associated with industrial activities in Washington State. This permit will take effect on September 20, 2002 and revokes and replaces the current permit on that date. The reissued permit implements the Federal Clean Water Act and State Water Pollution Control Act. The purpose of the permit is to protect waters of the state through the regulation of industrial stormwater discharges. Stormwater discharges are conditioned to control the discharge of pollutants associated industrial activities.

Most industrial facilities that discharge stormwater to a surface waterbody are included for coverage under this permit. A stormwater discharge includes, but is not limited to, stormwater discharges from industrial plant yards; immediate access roads and rail lines used or traveled by carriers of raw materials, manufactured products, waste material, by-products used or created by the facility; material handling sites; refuse sites; sites used for the application or disposal of process waste waters [as defined at 40 CFR Subchapter N (Effluent Guidelines and Standards) Part 401 (General Provisions)]; sites used for the storage and maintenance of material handling equipment; sites used for residual treatment, storage, or disposal; shipping and receiving areas; manufacturing buildings; storage areas (including tank farms) for raw materials, and intermediate and finished products; and areas where industrial activity has taken place in the past and significant materials remain and are exposed to stormwater.