NPDES Permit for Skagway Wastewater Treatment Plant in Alaska

Below are EPA's National Pollutant Discharge Elimination System (NPDES) permit and supporting documents for the Skagway Wastewater Treatment Plant in Alaska.

The treatment plant discharges primary treated effluent to Taiya Inlet under a section 301(h)-modified NPDES permit.

Permit number: AK0020010

Current Permit

Effective date: October 1, 2002
Permit expired: September 7, 2007 (administratively continued)

• NPDES Permit, City of Skagway, Alaska, #AK0020010 (pdf) (282.57 KB, August 2002)
  Final permit.
• NPDES Permit Fact Sheet, City of Skagway, Alaska, #AK0020010 (pdf) (850.98 KB)
  Provides technical basis for NPDES permit.

Proposed Permit

EPA is proposing to reissue this permit. We accepted public comments on the draft permit and tentative 301(h) decision from July 28 through September 13, 2023.

• Draft NPDES Permit, City of Skagway, Alaska, #AK0020010 (pdf) (732.87 KB, July 2023)
  Proposed wastewater permit.
• NPDES Permit Fact Sheet, City of Skagway, Alaska, #AK0020010 (pdf) (4.56 MB, July 2023)
  Technical basis for draft permit.
• 301(h) Tentative Decision Document, City of Skagway, Alaska, #AK0020010 (pdf) (1.41 MB, July 2023)
  EPA's tentative decision on whether the Skagway wastewater treatment plant continues to qualify for a 301(h)-modified permit.
• Mixing Zone Dilution Modeling for Six Alaska POTWs (pdf) (2.09 MB, August 5, 2021)
  Mixing zone dilution analysis of discharges from six 301(h) publicly-owned wastewater treatment facilities in southeast Alaska (Haines, Ketchikan, Petersburg, Sitka, Skagway, Wrangell).