Agenda - Council - 10/08/2019 - Laserfiche WebLink

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PROJECT TEAM APPROACH A successful feasibility study is critical because it provides the basis for the design of your overall facility. If performed properly, it will result in a project that meets the City's goals in a cost-effective and operations -friendly manner. The SEH team and staff from Ramsey will unite to form a comprehensive project team. Starting with a thorough analysis of the City's source water aquifer, water demands and water distribution system, we will evaluate the basis and support for a centralized water treatment facility. The results of these efforts will provide an understanding of the source water and long- term capacity needs of the facility. With this information serving as a framework, the project team will determine the best course for the evaluation process by focusing on the layout features that City staff wants and the subsequent siting requirements that will support future capacity and treatment needs. Through eight proposed progress meetings (plus other meetings), the project team will share ideas and make decisions that customize the conceptual water treatment facility to meet Ramsey's long-term needs. The following are key elements of our teams' work and approach based on our understanding of the City's Request for Proposals. 0 Analyze Source Water Analyze and report on the overall accessibility, capacity, chemistry and limitations of the Tunnel City/Wonewoc (TCW) aquifer. Melanie Niday, PG will lead the Source Water Analysis. Analyze Aquifer Accessibility Identify approximate useable boundaries of TCW aquifer (not limited to City limits). The City of Ramsey is included in the greater Twin Cities metropolitan region. In identifying functional boundries we will make use of many available resources and publications including those from the Minnesota Geologic Survey the County Well Index (now known as the Minnesota Well Index) and the City of Ramsey's existing Wellhead Protection Plan Part I, that has been reviewed and approved by the Minnesota Department of Health. This groundwater management plan establishes water use from existing municipal wells over the course of 10 years. This plan includes a groundwater model that can be used to model additional scenarios relating to tasks in this proposal. SEH proposes utilizing this previously developed model along with a variety of sources to establish the usable boundaries of the TCW aquifer including the following: • The City of Ramsey's most recent Wellhead Protection Plan. • Mossler, John H. (1992). RI-40 Sedimentary Rocks of Dresbachian Age (Late Cambrian), Hollandale Embayment, Southeastern Minnesota. Minnesota Geological Survey. Retrieved from the University of We find that the best way to deliver a project that meets the City's goals is through a collaborative City/ SEH team. Minnesota Digital Conservancy, http://hdl.handle. net/11299/60785. • Mossler, John H.. (2013). M-194 Bedrock Geology of the Twin Cities Ten -County Metropolitan Area, Minnesota. Retrieved from the University of Minnesota Digital Conservancy, http://hdl.handle.net/11299/154925. • Runkel, A.C.; Tipping, R.G.; Mossler, J.H.. (2003). Geology in Support of Groundwater Management for the Northwestern Twin Cities Metropolitan Area. University of Minnesota. Retrieved from the University of Minnesota Digital Conservancy, http://hdl.handle. net/11299/108353. • Metropolitan Council. (2014). Twin Cities metropolitan area regional groundwater flow model, version 3.0. Prepared by Barr Engineering. Metropolitan Council, St. Paul, Minn. • Minnesota Well Index created by the Minnesota Department of Health. Identify Areas Where Additional Wells May Be Feasible SEH will utilize a variety of information to determine future well locations that will be in the best interest for the City of Ramsey. The feasibility of a well location will be determined based on aquifer quality, aquifer capacity/ supply and location cost and practicality. SEH will review potential well locations based on proximity to existing water supply systems, jurisdictional boundaries including private and 4 CENTRALIZED WATER TREATMENT FACILITY PROPOSAL