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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

Stormwater Permit Info

General NPDES Permit and related materials for stormwater discharges associated with industrial activity in Portland.


Application for the Stormwater Permit

Includes forms and instructions to obtain coverage under the 1200-Z or 1200-COLS General NPDES Stormwater Permit.

1200-Z Permit

General NPDES Permit for industrial facilities discharging stormwater to waters of the state.

1200-COLS Permit

General NPDES Permit for industrial facilities discharging stormwater to the Columbia Slough

1200-COLS Guidance Factsheet

BES Compliance Guidance Factsheet for the new 1200-COLS Permit

Who Needs a Permit?

Information about stormwater regulations and the types of facilities that require a NPDES Stormwater Discharge Permit.

1200-Z Guidance Factsheet

BES Compliance Guidance Factsheet for the new 1200-Z Permit