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FP P) <br /> JAII 12 zlij <br /> January 10, 2001 <br /> Mr. Steve Rohlf <br /> City of Elk River <br /> 13065 Orono Parkway <br /> Box 490 <br /> Elk River, MN 55330 <br /> RE: Ridges of Rice Lake— Proposed Residential Development <br /> Dear Steve: <br /> The Ridges of Rice Lake is a proposed residential development which is located approximately one-half <br /> mile to the west-southwest of the WMI Elk River Landfill. A plat has been submitted to the City for review <br /> and approval. Specific concern has been raised regarding the construction of individual water supply <br /> wells and the potential for groundwater impacts associated with the Landfill to affect the water quality for <br /> the new wells. <br /> The Landfill has developed a groundwater quality monitoring system for the deep and shallow <br /> groundwater in the vicinity of the Site. Residential wells in the area are sampled on an annual basis. <br /> There is no data indicating that groundwater in area of the proposed residential development has been <br /> impacted by the Landfill. <br /> • In our telephone conference with the developer, he indicated that a community well would be constructed <br /> to supply the individual residences. The well would be constructed in the bedrock aquifer to ensure <br /> adequate yield and low concentrations of iron and manganese. The new well should be tested for a full <br /> range of drinking water quality parameters after it is constructed to ensure potability. <br /> In previous discussions with Landfill representatives concerning this issue, initial testing of water quality <br /> for a new well for potential parameters associated with the Landfill would be coordinated by Elk River <br /> Landfill. It may also be possible to incorporate the new community well into the ongoing residential <br /> monitoring program. <br /> I suggested that the developer contact the WMI Hydrogeologist for the Landfill site, Terry Johnson, to <br /> discuss recommended construction details for the new bedrock well and the initial water quality testing. <br /> Please contact me if you have additional questions or comments. My direct phone number is 612-339- <br /> 2316. Thank you. <br /> Sincerely, <br /> B vir.\mentakResources Group, LLC <br /> Awl"4 <br /> 111 <br /> ' w <br /> Matthew L. Ledvina, P.E. <br /> Project Manager <br /> Cc: Terry Johnson, Waste Management Inc. <br /> • <br /> E VJRONMENT,At_ RESOURCE GROUP <br /> 900 Second Avenue South Minneapolis, MN 55402 <br /> phone 612.339.4750 fax 612.339.4990 <br />