1. Construction & Post-Construction Stormwater Ordinance City of Wenatchee, Public Works Department Jessica Shaw, Environmental Manager

2. Eastern WA Phase II Municipal Stormwater Permit Issued by Department of Ecology to cities and counties with specific urban densities in 2007. Passes along federal stormwater regulations and additional state requirements. Sets forth a timeline for cities/counties to adopt stormwater regulations and implement a stormwater program

3. Stormwater Program Elements 1. Public Education & Outreach 2. Public Involvement & Participation 3. Illicit Discharge Detection & Elimination 4. Construction Site Stormwater Runoff Control 5. Post-Construction Stormwater Management for New Development & Redevelopment 6. Pollution Prevention & Good Housekeeping for Municipal Operations

4. Construction & Post-Construction Regulatory Requirements Adopt an ordinance addressing construction site runoff and post-construction management of stormwater facilities no later than February 16, 2010. The ordinance must become effective no later than February 16, 2011. The Eastern WA Phase II Municipal Stormwater Permit also specifies minimum requirements for the ordinance.

5. Minimum Ordinance Requirements Construction & Post-Construction The ordinance shall at a minimum apply to construction sites disturbing greater than or equal to one acre, and to construction projects less than one acre that are part of a common plan of development or sale. ◦ Example: ¼ acre lot, that is part of a 2 acre subdivision. All lots within the initial development are regulated.

6. Minimum Ordinance Requirements Construction & Post-Construction Provide enforcement procedures & actions Insure access to inspect construction and post- construction stormwater BMPs located on private properties that discharge to the stormwater system Adopt the Stormwater Management Manual for Eastern Washington (or other DOE approved manual)

7. Minimum Ordinance Requirements Construction Construction site operators must: Prepare a Construction Stormwater Pollution Prevention Plan Implement appropriate erosion & sediment control Best Management Practices (BMPs) Control waste (concrete washout, litter, chemicals, discarded building supplies)

8. Minimum Ordinance Requirements Post Construction Project proponents and property owners must: Insure the BMP selection, design, installation, operation, and maintenance meet minimum technical requirements. Implement appropriate runoff treatment, flow control & source control BMPs Provide adequate ongoing long-term operation & maintenance of BMPs