Documents	Additional Information
Draft Permit (November 16, 2011) Draft Permit - showing changes (November 16, 2011)	Statement of Basis (November 16, 2011)
Modified WSDOT Municipal Stormwater NPDES Permit (2010)	Statement of Basis (2010)
WSDOT Municipal Stormwater NPDES General Permit (2009) WSDOT Municipal Stormwater NPDES General Permit (redlined version)	Focus Sheet: Permit Overview (2009) Focus Sheet: Monitoring (2009) Frequently Asked Questions: Highway Runoff Manual & New Design Standards (2009) Focus Sheet: Stormwater Management Program Plan (2009)
WSDOT Permit Fact Sheet Appendix A: List of applicable TMDLs Appendix B: Monitoring program cost estimate Appendix C: Response to Comments Appendix D: WSDOT Errata Sheet (minor modification) Appendix E: Response to Comments (major modification)	The Fact Sheet provides the principal facts and significant legal, procedural, and policy decisions considered in preparing the permit. Additionally, in contains Ecology's Response to Comments.
Implementing Agreement	WSDOT agrees to apply the June 2008 version of the Highway Runoff Manual throughout Washington State to direct the planning, design, construction, and maintenance of stormwater management facilities for new and redeveloped Washington State highways, rest areas, park-and-ride lots, ferry terminals, and highway maintenance facilities.

Purpose of the Permit

State and Federal regulations require WSDOT to have National Pollutant Discharge Elimination System (NPDES) permit coverage in the urbanized  areas covered by Phase I and Phase II of the municipal stormwater permit program. This permit also covers stormwater discharges to any water body in Washington State for which there is an Environmental Protect Agency approved Total Maximum Daily Load with load allocations and associated implementation documents specifying actions for WSDOT stormwater discharges. Discharges covered include stormwater runoff from state highways, rest areas, park and ride lots, ferry terminals, and maintenance facilities. The permit addresses these legal requirements and regulates the discharge of pollutants to protect water quality in Washington State.

2010 Permit Modification

The Department of Ecology (Ecology) issued a general permit to the Washington State Department of Transportation (WSDOT) on February 4, 2009. The permit covers discharges from its municipal separate storm sewer system (MS4). MS4s are conveyances or a system of conveyances including roads with drainage systems, streets, catch basins, ditches, man-made channels, and storm drains. The effective date of this permit was March 6, 2009. The permit was appealed by Puget Sound Keeper Alliance. In January 2010, Ecology WSDOT and the appellant made a settlement resolving the permit appeal. This permit modification implements the settlement agreement which can be viewed at: www.ecy.wa.gov/programs/wq/stormwater/municipal/wsdot.html

The proposed modification adds substantive language to the permit as a result of a settlement agreement between the Departments of Ecology and Transportation and Puget Soundkeeper Alliance. Permit sections modified include: S6.C, S7. E.2.d., S8.E., Appendix 7, Stormwater Management Program Plan, Sections 3 and 3.1, 5.4, 6.2, and Appendix 3, Applicable TMDL Requirements.

Comments received on the 2010 Permit Modification

• Washington State Department of Transportation
• Washington State Department of Natural Resources

Appeal Information

On March 3, 2009, the Puget Soundkeeper Alliance filed an appeal to the WSDOT Stormwater Permit. A stipulated stay/settlement agreement was reached in January 2010. The modification adds substantive language to the permit.