
The Phase I permit regulates discharges from municipal separate storm sewers owned or operated by Clark, King, Pierce and Snohomish Counties, and the cities of Seattle and Tacoma.
The Phase II Municipal Stormwater Permit rule extends the coverage of the National Pollutant Discharge Elimination System (NPDES) program to certain "small" municipal separate stormwater sewer systems (MS4s). The Department of Ecology used maps of the census urbanized areas and jurisdictional boundaries to identify Phase II jurisdictions. Ecology issued two Phase II permits: one for Eastern Washington and one for Western Washington.
Municipal Stormwater Permits |
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Phase I
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Phase II Eastern
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Phase
II Western
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WSDOT Permit |
Secondary Permittees
Secondary permittees are public entities such as ports; prison complexes;
park districts; universities; or diking and drainage districts located in a
Phase I or II city or county. They may be required to obtain a permit.
Petition Criteria (PDF)
These are the criteria the Department of Ecology will use to evaluate
petitions to include additional jurisdictions under the permit. The
petitions are allowed under Federal regulations. The Petition Criteria
will be supplemented shortly with a petition form. This form, however, is not
needed at this time to submit additional areas for coverage under the permits.
2010 Phase I
Permit Modification and 2009 Phase I and Phase II Permit Modification
Appeals
Thirteen parties appealed the Phase
I, Phase II Eastern Washington and Phase II Western Washington Municipal
Stormwater Permits. In August 2008, the Pollution Control Hearing Board issued
their decisions.
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