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Appendix - Arden Hills Water Quality Task Force - June 2000 Secure voluntary water quality easements for both maintenance and improvements prior to project planning. Consider purchased easements in context of Water Management Plan. Execute purchases in a timely fashion to avoid excessive costs. Maximize long term benefits to cost by using Metro Council EMP's and RCWD infiltration practices in the Water Management Plan. Use the Water Management Plan as a guideline to identify resources and techniques for improvements to areas with direct pipe discharges. Resources: Some projects will require additional engineering and planning reviews per Water Management Plan. Reconstruction costs may be slightly higher for upgrading and improving structures like piped outlets directly to lakes and wetlands. Establishment of a standard Citywide EMP would minimize the design costs per project. The Water management Plan process should identify these components. Voluntary dedication should be the preferred method for acquisition of easements, A financing method and timeline would be necessary to accomplish these goals. The surface water management fee account and other enterprise accounts are a logical funding choice. 8) Recommendation Amend City Ordinances as appropriate to encourage improved water quality practices in development and redevelopment projects and to allow for certain types of landscape and water plantings as natural amendments for water quality purposes. . e Method(s): Identify areas of conflict in the Ordinance such as weed control versus water quality amendments. 20 Identify special construction requirements for selected areas of concem identified per the Water Management Plan. For example: Contractors might be required to protect non- vegetated slopes during construction from erosion. Vegetated dikes may be placed within (or at termination of) MN-Dot drainages to slow or capture hazardous material spills along major highway right-of-ways with direct runoff to lake areas. Implementation(s): Use normal ordinance procedures to draft and submit language that would allow aquascaping, and landscaping EMP's. Require Special seed mixes for erosion control on slopes. e 20 Potential remedies include amending existing ordinances or a creating new ordinance. The committee's discussion favored creating a new Ordinance that addresses water quality initiatives, This approach would avoid the ambiguities found in existing Ordinances by clearly determining the values of specific plantings. 12