Watershed Management

APDES Permit

Our municipal separate storm sewer system (MS4) discharges stormwater into more than 30 waterways and wetlands within the Municipality of Anchorage (Municipality) and in State of Alaska rights-of-way owned or operated by the Alaska Department of Transportation and Public Facilities (DOT&PF). The National Pollutant Discharge Elimination System (NPDES) Program originated under section 402 of the Clean Water Act (CWA, 33 USC §1251), which requires that pollutant discharges to surface water be authorized by permit. Together, the Municipality and the DOT&PF are authorized to do so through an Authorization to Discharge under the National Pollutant Discharge Elimination System. This authorization, Alaska Pollutant Discharge Elimination System (APDES) Permit No. AKS 05255-8, is effective from August 1, 2015 to July 31, 2020. The Term III APDES permit required an update to the Quality Assurance Plan (QAP).

The APDES Permit also allows discharge of certain non-stormwater flows, as well as stormwater discharge associated with industrial activity and construction. It outlines compliance responsibilities, limitations, and the requirement of a Stormwater Management Program. The permit incorporates a schedule for compliance, and outlines strict monitoring, record keeping, and reporting requirements. Civil, administrative, and even criminal penalties can apply if the conditions of the permit are not met.

2016 Annual Meeting

The 2016 APDES Annual Meeting will be held on March 1st  from 9:15 AM to 1:30 PM at the BP Energy Center. Reminders have been sent out in the coming days to to people who attended last year and other interested  parties. This year the format for the meeting will be an open house and will include poster display session with multiple breakout discussions on permit related topics. An agenda for the meeting will be posted on this website a couple of weeks prior to the meeting. If you would like more information on the 2016 Annual Meeting, please contact us at 907-343-8135.


2015 Annual Report

Read our 2015 APDES Annual Report for more detailed information about the permit and actions taken to meet permit requirements. The 2015 Annual Report was submitted to the Alaska Department of Conservation on February 16th, 2016.  Last year's annual report can be found HERE.


2015 APDES Annual Report 2 MB
2015 APDES Annual Report Certification Documents 3 MB


App A1a 2015 ARDSA MS4 Summary 21 KB
App A1b 2015 ERSM MS4 Summary 3 MB
App A1c 2015 GSA MS4 Summary 62 KB
App A1d 2015 ADOT_MS4_Summary 96 KB
App B1 2015 ADOT Project List 89 KB
App B2 Escalating Enforcement Policy Update 2016 71 KB
App C1 2015 LID Monitoring Report 32  MB
App D1 Anchorage Industrial and Commercial Facilities Site Inventory and Map 1 MB
App D2 2015 Snow Disposal Site Map 227 KB
App E1a ARDSA SOP Update 2015 196 KB
App E1b CBERRRSA SOPs Update 2015 9 MB
App E1c GSA SOP SOP Update 2015 244 KB
App E1d ADOT Maintenance SOPs Update 2015 468 KB
App E2a ARDSA Sweeping Infeasible Streets 2015 29 KB
App E2b CBERRRSA Sweeping Infeasible Streets 2015 8 KB
App E2c GSA Sweeping Infeasible Streets 33 KB
App E2d ADOT Sweeping Infeasible Streets 46 KB
App E3_2015 Street Sweeping Assessment 6 MB
App E4 2015 SWPPP Inspection Reports for Facilities 19 MB
App F1 2015 Illicit Discharge Map 484 KB
App F2 2015 Dry Weather Screening Report 33 MB
App G1 Education Work Plan for 5-year permit term 66 KB
App G2 Outreach and Education Report and Materials 2 MB
App G3 2015 Anchorage Annual Meeting Summary 6 MB
App G4 Anchorage APDES Quarterly Meeting Summary 232 KB
App H1 2015 Final MOA Stormwater Report 84 MB