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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.


1200-Z Permit

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

Application for the Stormwater Permit

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

1200-COLS Guidance Factsheet

BES Compliance Guidance Factsheet for the new 1200-COLS Permit

1200-COLS Permit

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

1200-Z Guidance Factsheet

BES Compliance Guidance Factsheet for the new 1200-Z Permit

Who Needs a Permit?

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