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City of Mounds View Page 22 Local Surface Water Management Plan 435-08-135 to preserve floodplain and wetland storage capacity, to improve the chemical, physical and biological quality of surface water, to reduce sedimentation, to preserve waterbodies' hydraulic and navigational capacity, to preserve natural wetland and shoreland features, and to minimize public expenditures to avoid or correct these problems in the future.”10 As the vast majority of City of Mounds View is fully developed, the primary application of the new RCWD rules will be for City street projects and redevelopment projects. The City is currently in the process of applying for a RCWD permit for the first City project (2009-2010 Street and Utility Improvement Project) permitted under the new rules. One should note that the previous RCWD water quality and volume requirements have been revised in the new rules. Unless specific site conditions afford an exception (as outlined in the rules), the new rules combine the water quality and volume control requirements into a single infiltration requirement, with the depth of runoff to be infiltrated varying depending on the type of project. The City will defer the enforcement of the RCWD Water Quality and Volume Control (Rule C) requirement to the RCWD and coordinate permitting efforts with the RCWD. The 2008 RCWD rules are included in Appendix B. 4.4 SOUTHWEST URBAN LAKE STUDY REPORT AND MANAGEMENT ACTION PLAN The RCWD recently completed Phase I of the Southwest Urban Lake Study. This study analyzed 24 urban lakes in the southwest portion of the RCWD, which included Spring Lake. This report detailed the first phase of a two-phase study, which included: An assessment of existing lake quality data Lake-bottom sediment sampling and analysis Delineation of sub-watersheds boundaries and land use determinations for each lake studied Listing of current impairments for the 24 lakes studied Summary of available lake quality data Recommendations for additional lake quality monitoring via the Metropolitan Council’s Citizen Assisted Monitoring Program (CAMP) Identification of available in-lake and watershed BMPs to address impairments of the lakes studied The report identifies Spring Lake as a shallow basin due to a littoral are that encompasses nearly 90% of the lake. The existing lake quality data for Spring Lake is limited, with only one full year of sampling in the last ten. The report recommends that Spring Lake be added to the CAMP in 2008 to begin to compile additional lake quality data. The report also notes that Spring Lake has experienced significant water level fluctuations in the recent past. New data could provide insight into the level of impact the water level fluctuations are having on lake quality. Phase II of this Southwest Urban Lakes Study will focus on soliciting input from lake stakeholders to identify any “impairments” to the beneficial uses they identify. This phase will use the existing lake quality data and identified impairments to develop Management Action Plans (MAPs) for each of the 24 lakes studied. The MAPs will recommend specific BMPs to address the impairments to the beneficial uses identified. A draft MAP for Spring Lake has been completed. Mounds View had the opportunity to review and comment on the draft Spring Lake MAP and the RCWD is currently incorporating the City’s comments into the final MAP. There is a discussion of future implementation of the MAPs in the Implementation Section (Section 8.5.2) of this LSWMP. 10 Excerpt from RCWD Rules, found at http://www.ricecreek.org/content/documents/permit/forms/RCWD_Rules.pdf