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public property boundaries, known and assumed <br />water quality issues, assumed geologic sensitivity <br />and vulnerability, the proposed source water <br />aquifers protection from surface contaminants and <br />information on water supply and quantity including <br />predicted production rates from various aquifers. <br />Together with Melaine, Jeff Ledin, PE and Mark Wallis, <br />PE will evaluate the most practical well locations first. <br />Some locations may not be suitable due to proximity <br />to the existing water supply lines or because they <br />are owned or managed by entities that would be cost <br />prohibitive or inaccessible to the City of Ramsey. <br />Furthermore, priority may go to well locations in close <br />proximity or located on City land as a cost saving <br />measure to the City. <br />SEH will utilize GIS systems to compare well <br />locations to existing water supply systems and <br />jurisdictional boundaries, including City owned <br />property, to cite well locations that are logistically <br />feasible. We will also use GIS systems to map existing <br />groundwater contaminants and aquifers vulnerability <br />and sensitivity to determine the likelihood of <br />contaminants reaching and traveling within the source <br />water aquifer(s). (We detail this process in Section C, <br />below). <br />SEH will also review geologic properties of the <br />aquifers near the City of Ramsey. This includes <br />locations within the currently utilized Tunnel City <br />formation and other potential aquifers given the same <br />parameters as listed above (We detail this process in <br />Section D, below). <br />Lastly, SEH will review geologic information pertaining <br />to well production and supply from proposed <br />well locations. <br />Analyze Source Water Chemistry <br />Identify/inventory known primary contaminants, <br />secondary contaminants and emerging contaminants <br />(based on anticipated life of facility). <br />This analysis will begin with a determination and reporting <br />of the US EPA's current primary and secondary water quality <br />standards, followed by a determination of the US EPAs <br />emerging contaminants list. <br />• SEH proposes utilizing multiple information sources <br />to determine the existing and future quality of the City <br />of Ramsey's water. The City recently conducted a two- <br />part wellhead protection process. The Part I Wellhead <br />Protection Plan determined the vulnerability of the City's <br />aquifer based on the geologic sensitivity ratings of wells <br />and their monitoring data. This helps to determine the <br />rate at which surface water recharges source water <br />aquifers utilized by the City of Ramsey's municipal <br />wells. SEH will review similar properties for wells in the <br />surrounding area along with any future proposed well <br />citing locations. <br />• The City of Ramsey is in the process of, or has already <br />completed their Part II Wellhead Protection Plan. <br />This plan established a potential contaminant source <br />inventory that the Environmental Protection Agency <br />(EPA) and Minnesota Department of Health (MDH) has <br />determined as potential point sources of contaminants <br />given the established aquifer's vulnerability. We propose <br />a review and, if necessary, an update to this potential <br />contaminant source inventory. We will also review <br />adjacent and nearby potential contaminant sources, <br />nearby Department of Agriculture spill and cleanup <br />sites, Minnesota Pollution Control Agency (MPCA) <br />listings and contaminated or potentially contaminated <br />sites, Minnesota Incident reports relating to Spills and <br />information on regional landfills. <br />• Upon completion, SEH will prepare a memorandum that <br />represents our best projection for the future chemistry <br />and any potential treatment needed over the life of the <br />City's proposed water treatment facility. <br />Analyze Aquifer Capacity/Limitations <br />Determine overall ability of the TCW to serve the City's <br />future water supply needs. <br />SEH proposes three methods for determining the overall <br />ability of the TCW to serve the City's future water supply <br />needs. <br />Review the Aquifer Test Plan (DAP-ATP) that was <br />approved during the development of the Wellhead <br />Protection Plan Part I to determine if aquifer <br />properties for the area around the City of Ramsey are <br />adequate. If SEH determines that the DAP-ATP forms <br />do not properly establish aquifer properties SEH <br />proposes the following: <br />— Conduct an aquifer test to determine aquifer <br />properties of the TCW. SEH proposes a constant <br />rate Aquifer pump test following Minnesota <br />Administrative Rules outlined in 4720.5520 (https:// <br />www.revisor.mn.gov/rules/4720.5520/) to determine <br />standard aquifer characteristics of the TCW. Better <br />understanding of the aquifer properties can improve <br />future predictions and groundwater models. <br />SHORT ELLIOTT HENDRICKSON INC. 5 <br />