DEQ currently regulates municipal stormwater discharges from 19 communities with populations less than 100,000 (Phase II) under Municipal Separate Storm Sewer System individual permits. Those individual permits expired in 2012.
The number of regulated Phase II communities in Oregon has increased due to population growth. In 2012 seven new regulated communities were notified that they will be required to obtain coverage permit coverage.
DEQ has proposed to permit existing and future Phase II communities under a general permit, the MS4 Phase II Stormwater general permit.
Listening session takeaways
In July 2016 DEQ posted the draft MS4 Phase II general permit for public notice and received 250 separate comment or oral testimonies. Based on several requests, DEQ hosted two facilitated listening sessions to further explore issues raised during the public process. The recommendations included:
- DEQ should build off the current general permit draft and re-evaluate a tiered permit structure to acknowledge that smaller communities have less capacity than larger ones, and time is needed for new communities.
- DEQ should evaluate the permit conditions for new communities who need time to develop an MS4 program.
DEQ listening session next steps
- DEQ will propose a tiered general permit to address the differences of new, small and existing Phase II communities.
- DEQ will work to address concerns raised during the listening session and public comment period.
- DEQ will re-engage MS4 stakeholders before the permit is reposted for public comment.
MS4 Phase II permit development timeline
Current: DEQ redrafting permit to address tiers, comments, remand rule, other issues
April 27, 2017: DEQ information meeting
Tentative: Sept. 30, 2017 - Begin permit public comment process
DEQ Information Meeting
Oregon DEQ will be hosting an information meeting related to the development of the MS4 Phase II General Permit on April 27, 2017 at the DEQ Salem Office.
DEQ Salem Office
4026 Fairview Industrial Drive
Salem, OR 97302
On July 1, 2016 DEQ posted a proposed MS4 Phase II general permit for public comment. DEQ hosted a Public Hearing associated with the permit on Aug. 3, 2017. The formal comment period ended Sept. 2, 2016.
In July 2016 DEQ posted the draft MS4 Phase II general permit for public notice and received 250 separate comment documents or oral testimonies. Based on several requests received, DEQ hosted two facilitated listening sessions to further explore issues raised during the public process.
Dec. 6, 2016
Feb. 7, 2017
DEQ convened an Advisory Committee associated with the development of a MS4 Phase II general permit. The committee helped identify issues, provide feedback on implementation timelines and regional issues.
Meeting 7: May 10, 2016
Meeting 6: Nov. 19, 2015
Meeting 5: Nov. 4, 2015
Meeting 4: Sept. 24, 2015
Meeting 3: July 9th, 2015
Identified are the 19 Phase II communities, and the seven new communities that will require coverage.
City of Albany*
City of Ashland
City of Bend
City of Corvallis
City of Eagle Point*
City of Gold Hill**
City of Grants Pass*
City of Jefferson **
City of Keizer
City of Medford
City of Millersburg*
City of Milton-Freewater**
City of Philomath
City of Rogue River*
City of Springfield
City of Tangent**
City of Troutdale
City of Turner
City of Wood Village
Rogue Valley Sewer Services - RVSS
RVSS - City of Central Point
RVSS - City of Phoenix
RVSS - City of Talent
RVSS - Jackson County
*New Urbanized Areas identified based on 2010 US Census data. Communities are automatically designated for coverage by EPA and notified by DEQ.
** New Urbanized Areas identified based on 2010 US Census data. Community applied for waiver of coverage and DEQ approved request.
Stormwater runoff is generated when precipitation from rain and snowmelt flows over land or impervious surfaces and does not percolate into the ground. As runoff flows over land and impervious surfaces in urbanized areas (such as paved streets, parking lots and building rooftops), it can accumulate chemicals, nutrients, sediment or other pollutants in quantities that could adversely affect water quality. If stormwater runoff discharges from MS4s that serve these urbanized areas, and the runoff is untreated or allowed to accumulate pollutants, it may adversely affect local aquatic life and beneficial uses of water such as swimming, fishing and drinking water.
DEQ is no longer accepting comments and the opportunity to review and submit comments has concluded. DEQ will post the revised draft permit for public comment when available.
If you are interested in receiving updates about the Phase II General Permit development and MS4 Advisory Committee meeting notices, please email your name, affiliation and email address.