Agenda - Council - 12/12/2017 - Laserfiche WebLink

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wells, water distribution system, and direct route to the proposed surface water intake locations on the Mississippi River. Site B is located at the intersection of Alpine Drive and Puma Drive. This site is currently owned by the City of Ramsey. Additional water distribution mains and raw water transmission mains would be required for this site compared to Site A. Utilization of Site B will require approximately $1,500,000 in watermain and transmission main improvements. Cost for these improvements would be offset by savings realized by utilizing a site already owned by the City rather than purchasing property as required at Site A. The budgeted cost for purchasing Site A is $1,000,000. Further evaluation of site locations will be required during pre -design phases of the water treatment facility project implementation. D. ALTERNATIVE COMPARISONS Cost estimates for two (2) alternatives were developed for implementing the Water Supply and Treatment required to meet the City of Ramsey's water supply demands. For each alternative, the following assumptions were utilized: 1. The site for the surface water treatment facility should be acquired as soon as possible. 2. New water supply and treatment facilities will need to be on-line by 2019. 3. Treatment facilities will be constructed in phases to meet the demand requirements. During final design, a Value Engineering phase should be utilized to determine the most cost effective phasing of the treatment facilities. 4. Provisions will be incorporated into fmal design for routing of groundwater sources directly to the clearwell high service pumping facilities. With this provision, up to 20 percent of the water demand will be met with ground water. The groundwater supply would by-pass the water treatment facility and would be blended with treated water prior to being pumped to the distribution system. The amount of ground water which can be blended with the treated water is City of Ramsey, Minnesota — R13.104504 Page 24 Comprehensive Water System Study Prepared by Bolton & Menk, Inc.