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- National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) Annual Reports
National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) Annual Reports
National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) Annual Reports are submitted to the Oregon Department of Environmental Quality (DEQ) by November 1st of each year. They cover activities for the time period July 1st of the previous year through June 30th of the same year.
The Annual Report summarizes the accomplishments and implementation status of our Stormwater Management Plan (SWMP). Total Maximum Daily Load (TMDL) Progress Reports are submitted to DEQ at the same time (as Appendix D).
Oregon City's Annual Reports for our current permit can be found in the NPDES MS4 Annual Reports Archive. You can read more about the NPDES MS4 process and TMDL requirements on the NPDES MS4 Phase I Permit - Clackamas Group page.