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City of Arden Hills – 2030 Comprehensive Plan Approved: September 28, 2009 13-5 In April 2008, the Rice Creek Watershed District initiated an update to their Water Resource Management Plan (WRMP). Once the RCWD completes the update, the City will update its Stormwater Management Plan to bring it into conformance with the RCWD Plan and the Metropolitan Council’s Water Resource Management Plan. 13.1.3.2 Local Ordinances (Appendix F) In addition to the LSWMP, the City has adopted regulations to further the City’s goals in protecting water quality, reducing nonpoint source pollution, protecting sensitive natural areas, and managing stormwater (Appendix F): o Erosion and Sediment Control Ordinance o Shoreland Ordinance o Floodplain Ordinance The Erosion and Sediment Control Ordinance was adopted in 2008 and the Shoreland and Floodplain ordinances were adopted in 2002 and 2001, respectively. The City intends on reviewing the Shoreland and Floodplain ordinances to ensure that they are effectively advancing City goals and policies. 13.1.3.3 National Pollutant Discharge Elimination System (Appendix F) On March 17, 2014February 15, 2008, the Minnesota Pollution Control Agency (MPCA) approved the City’s Municipal Separate Storm Sewer System (MS4) permit. The MS4 general permit is mandated by federal regulations under the Clean Water Act and administered by the MPCA. In general terms, MS4s are publicly owned or operated stormwater infrastructure, used solely for stormwater, and which are not part of a publicly owned wastewater treatment system. Examples of stormwater infrastructure include curbs, ditches, culverts, stormwater ponds and storm sewer pipes. The City of Arden Hills is an MS4. The MS4 general permit focuses on reducing the pollution that enters these public systems and discharges to wetlands, streams and lakes (“waters of the state”). The MS4 permitting program gives owners or operators of municipal