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1200-Z Industrial Stormwater Discharge Permit Renewal

Adopted rule

Administrative Order No. DEQ-6-2021 
Filed and effective: March 25,  2021
See Oregon Bulletin, April 2021

The Environmental Quality Commission adopted rules to renew Oregon’s industrial stormwater permit, officially called the National Pollutant Discharge Elimination System Stormwater Discharge General Permit No. 1200-Z. This permit regulates stormwater discharges from industrial facilities that may reach Oregon waterways, directly or through conveyance system such as ditches or storm drains. The permit currently covers over 830 industrial facilities in Oregon.

Advisory committee

DEQ worked with an advisory committee of technical experts to investigate the feasibility of putting new limits on certain contaminants. DEQ also evaluated if it’s feasible to set discharge limits based on impaired waterbodies. 


​​​​​This committee's purpose is to provide expert input on policy and technical issues concerning this rulemaking.

​​Meeting 6 - June 17, 2020

Meeting 5, Part 1 - April 16, 2020

Meeting 5, Part 2 - May 4, 2020
Meeting 4 - Jan. 22, 2020
Meeting 3 - Nov. 13, 2019

Meeting 2 - Sept. 4, 2019 


​Advisory committee meetings are open to the public. The public may attend the meeting, but the committee has discretion whether to allow the public to participate in the meeting. The public will be able to comment on the proposed rule changes during the public notice and comment period later in the rulemaking. DEQ publishes meeting notices on the state events calendar. DEQ can provide documents in an alternate format or in a language other than English upon request. Call DEQ at 800-452-4011 or email​

Public involvement

The public comment period for this rulemaking closed at 4 p.m. on  Oct. 30, 2020.
For more information, see the Notice of Proposed Rulemaking and supporting documents: 

Public hearing

Oct. 30, 2020, 12 p.m.