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results of the pilot testing program, treatment of this source will be evaluated, <br />with a groundwater source backup based on the current well system. <br />Two potential locations have been identified for a surface water intake on the <br />Mississippi River. Locations for these intakes are shown on Figure 1, located in <br />Appendix C. Figure 1 also shows the proposed routing of the 30" raw water <br />transmission main from the intake structure to the water treatment plant site for <br />each option. <br />2. Ground Water Sources <br />As discussed in previous sections, the City currently obtains drinking water from <br />the Ironton -Galesville aquifer system. This system is utilized extensively by <br />surrounding communities. Minnesota Department of Natural Resources <br />(MnDNR) staff is currently exploring ways to manage this resource in the region, <br />and have requested that Ramsey look into alternate water sources, specifically <br />surface water sources. In addition, the City Ramsey agreed to establish an aquifer <br />monitoring program in order to collect data regarding the impact of water <br />withdrawal from the Ironton -Galesville aquifer. <br />Based on historical data, the potential of the Ironton -Galesville aquifer system to <br />provide water to meet future development needs is questionable. In order to <br />determine whether the aquifer would support future development, the City of <br />Ramsey would need to undertake an exploratory hydrogeologic study of the area. <br />This study would include the following: <br />1. Determine potential sites for additional wells based on land availability, <br />proximity to the existing and planned water utility infrastructure, and potential <br />for developing an economically viable water supply at the proposed site. <br />2. Construct test wells at the potential sites, and perform pumping tests to <br />determine the viable production at the site and potential impact on other water <br />resources. <br />The location of the potential well sites and the test well/pumping program would <br />need to be coordinated with MnDNR staff in order to assure that data collected <br />can be utilized in establishing water appropriation permit modifications. <br />City of Ramsey, Minnesota — R 13.104504 Page 4-2 <br />Comprehensive Water System Study Prepared by Bolton & Menk, Inc. <br />