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Stormwater Management Manual for. Western Washington. Volume II. Construction Stormwater. Pollution Prevention. Prepared by: Washington State Department of030 of the Poulsbo Municipal Code in order to adopt the 2019 Stormwater Management Manual for Western Washington and remain in compliance with the current NPDES The 2019 State Department of Ecology Stormwater Management Manual for Western Washington can be accessed from Ecology's stormwater information website. Our stormwater manuals provide stormwater permit implementation and management guidance. Contact your municipality or permit administrator to determine The Washington State Department of Ecology's Stormwater Management Manual for Western Washington, Volume II, Construction Stormwater Pollution Prevention This is the July 2019 version of the Stormwater Management Manual for Western Washington (SWMMWW). The objective of this manual is to provide guidance on the The Stormwater Management Manual for Western Washington (SWMMWW) provides guidance on the measures necessary to control the quantity and quality of Stormwater Management Manual for. Western Washington. Volume I. Minimum Technical Requirements and Site Planning. Prepared by: Washington State Department