09/02/2008 Council Packet - Laserfiche WebLink

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systems that can be linked together. Green infrastructure in practice will at first require more upfront plan review and project -level design, but reap savings from significantly reducing capital costs of constructing conveyance systems and the costly maintenance of ponds and associated devices. 1. Provide guidance for staff, City Boards, and City Council regarding low impact development. 2. Use of site planning and stormwater management features described for low impact development (see Appendix A, RMP, Section 4 References, Judicial Ditch 4 Resource Management Plan Appendix E). 3. Application of the city-wide conservation design framework presented in the Resource Management System to future development and redevelopment. 4. Ordinance revisions to implement the Resource Management System goals, policies, and programs. 5. Revising the maximum allowable impervious surface coverages for each land use category as a primary strategy to reducing the volume of water from new development. The adopted maximum allowable impervious surface coverages for all Zoning Districts range from 65 -85 %. The proposed revisions to the requirements, which were modeled in the RMP -FBO scenario, are presented in the following table: Table 2 -1: Revised Maximum Impervious Percentage by Land Use Catego Land Use Category Maximum Impervious Percentage Allowed Rural Land Use 10% Low Density Residential 40% Medium Density Residential 50% High Density Residential 65% Commercial 75% Industrial 75% Public Semi Public 65% Right -of -Way 75% Mixed Use 75% Existing Urban Areas Green Infrastructure Program Developed areas shall be approached with an infrastructure redevelopment strategy that is coupled with particular water bodies which may be currently affected in negative ways by stormwater pipe discharge. In addition, the green infrastructure strategies for existing transportation network maintenance can be geared towards eliminating existing outfall structures into nearby water bodies. 1. Address joint responsibility areas between county highway dept and the City. 2. Restructuring of the City street program: Shift the stormwater component of street reconstruction to a separate stormwater management program that relies primarily on less capital and energy intensive post- construction BMPs. Neighborhood stormwater planning should precede the street project design in order to develop the agreements 2 -40 • •