Water Quality Permits

As part of its efforts to protect and improve Oregon's water quality, DEQ issues stormwater discharge permits to industries that discharge stormwater into streams, rivers, lakes and streams from pipes, outfalls or other point sources at a site. Based on federal regulations, National Pollutant Discharge Elimination System permit coverage is required for industrial facilities that discharge stormwater from their industrial areas to surface waters of the state, or to storm drains that discharge to surface waters.

Examples of industrial activities that require a permit include manufacturing, transportation, mining, and steam electric power industries, as well as scrap yards, landfills, certain sewage treatment plants, and hazardous waste management facilities. See 40 CFR 122.26(b)(14) and (15) and permits below for list of industrial facilities that are required to obtain a permit.

Current actions

​DEQ invites the public to provide written comments on the conditions of the proposed 1200-Z industrial stormwater permit, known officially as a National Pollutant Discharge Elimination System general permit. You may submit comments by mail, fax or email to:
Stormwater Program Coordinator
Department of Environmental Quality
Water Quality Permitting and Program Development
Headquarters, Operations Division
700 NE Multnomah Street, Suite 600
Portland, OR 97232-4100
All comments are due by 5 p.m., Monday, March 20, 2017. All comments will become part of the public record.
Includes the request for comments, draft permit, and permit evaluation

Begin public notice of 1200-COLSB permit

Public hearing for 1200-COLSB permit

Close of public comment period for 1200-COLSB permit

Stakeholder meeting for 1200-Z permit

Stakeholder meeting for 1200-Z permit

Begin public comment period of 1200-Z permit

Public hearing on 1200-Z permit

Close of public comment period for 1200-Z. Comments due by 5 p.m.

1200-Z permit published

1200-Z permit effective

​​This section contains the files used in developing the benchmarks for copper, lead and zinc. This includes files that contain:

  • Original data
  • Data used in benchmark development (after combining data from multiple sources, performing quality review, selecting locations, and so on)
  • Analyses leading up to the Monte Carlo benchmark modeling (developing statistical distributions, verifying distributions, and so on)
  • Monte Carlo benchmark modeling files
Due to the complexity of the new water quality standard for copper (based on the Biologic Ligand Model), the copper benchmark was developed separately from the lead and zinc benchmarks. Therefore, the files used for developing the copper benchmark are first, followed by files used for developing the lead and zinc benchmarks.
Copper Benchmark Development Files
Original data
Files used in developing statistical distributions
Lead and Zinc Benchmark Development files
The NPDES 1200-COLS permit expired Sept. 30, 2016; the NPDES 1200-Z expires June 30, 2017. DEQ intends to combine the 1200-COLS and 1200-Z permits into a single industrial stormwater permit. This action will reduce the number of general permits requiring renewal, improve DEQ’s efficiency in issuing permits, and improve consistency for permit registrants.
For existing registrants that submit a renewal form, coverage under the 1200-COLS will be administratively extended until they receive coverage under the new permit.
Because the 1200-COLS expired before the combined permit will be available, DEQ issued the 1200-COLSB “bridge permit” for the period between when the 1200-COLS expired and a new combined permit is issued. The 1200-COLSB is nearly identical to the current 1200-COLS, and is available to new applicants during that period.

DEQ issued the 1200-COLSB with an effective date of Oct. 1, 2016.

All meetings are open to the public. DEQ publishes meeting notices on the state event calendar. The public comment period schedule and related public meetings will also be posted here.

NPDES Industrial Stormwater Discharge Permits

Supporting documents

Expired 1200-ZN Permit

Permit requirements remain in effect for existing facilities operating under an expired permit until the permit registrant is notified of permit renewal.

On Dec. 4, 2012, DEQ reissued Oregon’s general 1200-A permit for the discharge of stormwater from facilities with primary Standard Industrial Classification code 14, mining and quarrying of nonmetallic minerals, except fuels, including fixed and mobile asphalt and concrete batch plant operations. 

Effective Jan. 14, 2016, DEQ re-issued the 1200-A with modifications to make Tier II requirements and deadlines consistent with those in the 1200-Z and 1200-COLS permits. The modification description provides details of the changes.

Supporting documents

Permit requirements remain in effect for existing facilities operating under an expired permit until the permit registrant is notified of permit renewal.

You can sign up to be notified of information and updates on the NPDES industrial stormwater general permit renewals at the links below. Information relevant to both the 1200-COLS(B) and 1200-Z will be sent to all the Regional Newsletter addresses. Information specific to the 1200-COLS(B) may be sent only to the Northwest Region Newsletter. 

If you have multiple sites, you may want to sign up for more than one region's newsletter. The newsletters include updates and information about the current 1200Z permit and are often region specific.

green envelope icon Sign up for the Western Region 1200-Z Stormwater Newsletter

green envelope icon Sign up for the Eastern Region 1200-Z Stormwater Newsletter

green envelope icon Sign up for the Northwest Region 1200-COLS and 1200-Z Stormwater Newsletter

The public is able to review and comment on permit applications that are currently available.


If you have questions or comments regarding the renewal, please contact DEQ at oregonindustrialstormwater@deq.state.or.us.