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1800-block of Skillman Skillman Ave. storm sewer capacity and Avenue west of Fairview Fairview trunk storm sewer surcharge and 3 Avenue backflow. Chronic flooding occurs along the 1200- 1200-block of W. Sherren block of W Sherren St., known capacity 4 Street issues within the Fernwood-Lexington trunk storm sewer system. The intersection of Larpenteur Avenue Larpentuer Avenue and Fernwood Avenue is prone to 5 frequent flooding. Cohansey Boulevard adjacent to the Villa Cohansey Boulevard Park Wetland System has experienced 6 flooding during extreme events. 5.2.2Water Quality Impairments Earlier sections of this plan presented the current known and co waters within the City. The plan also discussed a few of the emerging water quality issues that have the potential to significantly alter the quality and c Much like some localized flooding issues that wont be identifie new water quality issues may not be known for years to come. Resrs throughout the country are identifying new issues on a regular basis and regula developing requirements and guidance to manage these new pollutays plan is to focus resources on the pollutants that they can best address, su and total phosphorus and at the same time recognize that new iss adjustment to the current approach. 5.2.3Operation and Maintenance With more than 140 public storm water treatment systems (ponds, more than 120 miles of storm pipe and an extensive road system oto complete street sweeping and deicing, the overall stormwater system operation and maintenance needs City is significant. In fact, the resources needed to maintain the syste to more treatment devices being installed each year and the need those that have been in service for 20 years or more. One of the most challenging ongoing maintenance needs will be th relates to requirements of the NPDES MS4 Permit Program. The MPC Managing Stormwater Sediment Best Management Practice Guidance f (June 2012) and describes when the dredged sediment can be used and when it is considered regulated solid waste. The cost difference can be significant depending on the levels of contaminants of concern found in test 5.2.4Education, Outreach and Collaboration Managing storm water is no longer just the responsibility of theA coordinated approach with residents, local interest groups, developers, City and watershed staff, and elected officials is needed in order to achieve local water quality improvements this plan. The City is required to complete public education efforts as p Permit Program. The City has also conducted and supported a number of educational programs such as rain water garden workshops that help residents efforts. These efforts will continue to be critical towards improving mgrass Comprehensive Surface Water Management PlanROSEV120222 City of RosevillePage 31