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April 24,2012 Page 6 of 11 2. Consideration to Authorize Ci Pro ect 12-9 Phase 1 Freedom Park Flood Miti ation 2'Consideration to tY J , g Authorize CityProject 12- Improvements. Report No. 12-097. 9,Phase 1 Freedom Park Flood Mitigation City Manager Lotter reported that as a result from the July 16th rain event,the Freedom Park/Pike Lake O° e"ts' Report No.12-097 Drive neighborhood approached the City for assistance. City Staff organized two informational meetings with the community affected,as well as discussing at the Neighborhood Meetings in February. Director Wyffels gave an overview of the proposed project,reporting that if the project is approved, construction could start in August 2012,with completion likely November 2012. Director Wyffels showed photos and a few videos from the July 16th event to provide the Council an opportunity to see what happened in various areas throughout the city. Director Wyffels explained that there are two options for improvements: • Increase upstream storage(bigger tub). • Increase capacity of conveyance system(bigger drain). Five possible options were considered;the following option is being recommended: Construct Surge Basin in Freedom Park—This option includes construction of a surge basin south and west of the existing ball field. Construct Additional Catch Basins on Pike Lake Drive-This option includes construction of additional catch basins along Pike Lake Drive at Fredeen Court and 12th Street. Hydrologic and Hydraulic Modeling,Soil Testing—This project will require additional professional services. See the explanation below. The total estimated project cost is $272,800. Mayor Jacobsen questioned if there is money in the budget. Director Wyffels confirmed that there is money in the Capital Improvement Plan, noting some projects will need to be reprioritized. Councilmember Burg questioned if the proposed changes to Freedom Park will have any impact on the park, and whether this plan has been reviewed by the PREC commission. Director Wyffels stated that the football field and track would not be affected. Wyffels stated that he has shared the proposed project with the PREC commission. It was explained that this will be a dry pond 99%of the time. Councilmember Bauman asked if this will solve the problems experienced this summer. Director Wyffels stated that in the near term it would provide more assurance.Mr.Hubmer stated that he hesitates to use the term"solve",but did note research indicates that this would provide protection during significant rain events. Mayor Jacobsen asked if the channel from Pike Lake to Long Lake will be able to accommodate an increased capacity. Director Wyffels reported that the channel will be cleaned up in the future;as part of a larger study. Councilmember Burg stated that Freedom Park was redesigned 10-12 years ago,noting that that drainage is still not adequate,and asked if the Parks Department has the ability to look at and possibly repair the field. Director Wyffels said he will talk to the Parks Department and look into mitigating some of the drainage problems on the field. Motion by Councilmember Burg seconded by Councilmember Bauman to order City Project 12-9, Phase 1 Freedom Park Flood Mitigation Improvements as proposed in the July 2011 Flood Investigation and Stormwater Modeling Report(Flood Report)dated April 17,2012 prepared by WSB&Associates. Phase 1 Improvements include constructing Options B4&B5 of the Flood Report.And authorize staff to proceed with the preparation of the plans and specifications and designate the City Engineer as the engineer for this improvement. 5 Ayes,0 Nays-Motion Carried