07-16-07 Item 2G, Ice Rink Warming House Review

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~ ~ EN HILLS MEMORANDUM DATE: May 3, 2006 TO: Michelle Olson, Recreation Program Supervisor FROM: Kristine Giga, Civil Engineer SUBJECT: Valentine Park Per your request, I have reviewed the existing conditions at Valentine Park. The park currently experiences drainage problems due to the minimal difference in elevation between the park and the ordinary water level of Lake Valentine. The Local Stormwater Management Plan prepared by SEH in 2001 identifies Valentine Park as the location of a regional pond. The proposed regional pond would serve a drainage area of 58 acres. The proposed size of the pond, as reported in the management plan, is 2.46 acres in surface area, or approximately 85% of the area of the park. The Parks, Trails and Open Space Plan prepared by the PTRC in 2002 proposed improvements to Valentine Park. The proposal includes two ponding areas, storm sewer and overall drainage improvements, replacement of park and play structures, the parking lot and the construction of a new trail. Estimated costs were listed at $140,000 for these improvements. Due to an increase in construction costs over the last 5 years, a revised estimate should be used for planning and budgeting purposes. An estimated cost for pond construction, drainage improvements (regrading the park), basic landscaping, and parking lot, trail and half-court basketball construction is about $220,000, including estimated engineering fees. This cost is preliminary and does not include park structure improvements. A study of the entire drainage area is recommended prior to improvements at the park. This would assist in preventing adjacent properties and the neighborhood overall from experiencing drainage problems as a result of changes made to the park. \\Metro-inet.us\ardenhills\PR&PW\Ellgineeling\2006\Parks\5-3-06 Memo Valentine Park.doc