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• • • Scenario 1 - Full Build Out (FBO) This scenario models the following effects on resources: • The city's preliminary full build out land use plan prepared as part of this Comprehensive Plan update, • The impervious surface percentages allowed in the city's adopted zoning ordinance, • Protection of high priority wetlands identified through the existing conditions assessment in the RMP, and • 2007 RCWD rules. The results of modeling the FBO scenario indicate the location of sensitive water level points, or flood prone areas, throughout the city (see Appendix A, RMP, Figure 20 - Land Use Alternatives Analysis: FBO withoutRMP conditions). These points include locations of predicted road overtops, less than 1" freeboard on a road, and pond overtops under a 100 -year flood event. During the process of developing the RMP, results of the existing conditions assessment and modeling the first scenario identified potential environmental impacts. Through an iterative process, this information guided the creation of the RMP goals and strategies, the Wetland Preservation Corridor, the city's land use plan presented in Chapter 3, and proposed revisions to impervious surface allowances in the city's zoning ordinance. Scenario 2 — Resource Management Plan -Based Full Build Out (RMP -FBO) This scenario was formed through an iterative process between the city and the RCWD that took into account the following effects on resources: • The revised proposed full build out land use plan presented in Chapter 3 — Land Use Plan • Proposed revisions to allowed impervious surface coverage in the city's adopted zoning ordinance • The Wetland Preservation Corridor prepared in the RMP • Proposed updates to the city's Parks, Natural Open Space /Greenways & Trail System Plan presented later in this Resource Management System Chapter of the Comprehensive Plan • 2008 Watershed District Rules This scenario results in eliminating several of the sensitive water level points, or floodprone areas, that resulted from the FBO scenario (see Appendix A, RMP, Figure 21 - Land Use Alternatives Analysis: FBO with RMP conditions). The final RMP -FBO scenario provides for land use conditions needed to maintain and protect priority resources in the city. These conditions are thread throughout this Comprehensive Plan, most notably in this Resource Management System Plan and in the Land Use Plan, which represent the fundamental framework for future decisions regarding growth and development. • Wet /and Preservation Corridor (WPC) The first outcome of high priority wetland designation was to create the WPC (Figure 2- 8). The buffer width standard for high functioning wetlands according to the Wetland Conservation Act (WCA) is 300 feet to maintain habitat and 50 feet to maintain water quality (MNRAM buffer width metric). A customized variable width buffer area is incorporated into the WPC, giving each wetland complex individual attention, rather than using a one size fits all approach. The combination of high priority wetlands and variable width buffer area with the City's defined low development suitability areas produces nodes, and the 100 -year floodplain area produces the diffuse corridor linkage areas. The diffuse corridor linkage areas tie together corridor nodes.