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After reviewing record drawings and ALTA surveys, it was found that there is no emergency overflow (EOF) for the study area or for the proposed regional pond. Because of this, a back-to-back 100-year storm event was modeled to determine the anticipated elevation water could reach if the outlet should ever clog. Cost estimates were not developed for the regional pond construction or private site storm sewer conveyance. Site Grading Existing hydraulic modeling was refined, and detail added, to analyze storm water conditions for future development scenarios. The regional pond elevation will be used to determine the minimum elevations required for building pads in the area. The results of the modeling indicate the regional pond could reach an elevation of 865.5 during a 100- year back-to-back storm event. This should be considered a preliminary result at this time, as the actual pond size and shape could be revised based upon other studies occurring at the City. The Lower Rum River Watershed Management Organization requires the lowest building pad elevation be a minimum of 1-foot above the high water level. Based on that requirement, the minimum building elevation should be 866.5. Figure 9 depicts the average existing lot elevations, the proposed minimum lot elevations required, and an approximate fill volume required to raise each of the sites to the minimum elevation. Each site requires an average of approximately 1 foot of fill to meet minimum elevations required. A new City park, located directly adjacent to Center Street NW, is in the planning stages at the City. The costs associated with importing fill for this parcel have been included in the alternate cost analysis section of this report. Street Lighting The costs included for street lighting were derived from recent projects within the City of Ramsey and are considered to be reasonable costs associated with providing street and pedestrian lighting along the corridors. Costs include conduit, wiring and the actual light fixtures to be installed. The density of the lighting fixtures is similar to the level provided along Riverdale Drive, east of Armstrong Boulevard. The costs provided are considered conservative and may be reduced depending upon the types of developments proposed and the density of lighting required. Trails/Sidewalks Trails were previously constructed along the center of the Ramsey Parkway median east of Center Street. Cost estimates were prepared which include a 10-foot bituminous trail along the extension of Ramsey Parkway to Zeolite Street. A 10-foot concrete sidewalk is proposed along the west side of Center Street. All other roadways are proposed to include a 6-foot concrete sidewalk on either side of the road segment. Figures 10-17 in the Appendix show these layouts and typical sections. Prepared by: Bolton & Menk, Inc. ADDITIONAL ANALYSIS Center Street Area Analysis' R16.114929 Page 7