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CH2M HILL <br /> 2525 Airpark Drive <br /> Redding,CA <br /> 96001-2443 <br /> CH2MH I LL Mailing address: <br /> P.O.Box 492478 <br /> Redding,CA <br /> 96049-2478 <br /> Tel 916.243.5831 <br /> September 29, 1998 Fax 916.243.1654 <br /> 144002.KP.35 F, <br /> Ms. Wendy Wyels f, <br /> California Regional Water Quality Control Board <br /> Central Valley Region API? 13 4 S3 <br /> TH <br /> 3443 Routier Road,Suite A EVVI kkj O` :' flu <br /> Sacramento,California 95827-3003 PEl"{'T j S'E:j:jvtCES <br /> Dear Ms.Wyels: <br /> Subject: Monitoring Well Installation Workplan <br /> This letter presents the Workplan for the installation of seven new monitoring wells in the <br /> vicinity of the Koppel Stockton Terminal.The locations of the proposed wells are included <br /> in the enclosed Workplan. In addition,the Workplan includes proposed soil sampling <br /> locations at the Koppel Stockton Terminal. <br /> This letter also presents responses to issues discussed in your 9 September letter to <br /> Leah Goldberg.The responses follow. <br /> Groundwater Monitoring <br /> • Future quarterly monitoring reports will clearly state whether samples have been field <br /> filtered. <br /> • The participating parties would like further justification from the RWQCB with regard <br /> to continuing sampling MW-2 on the Westways facility before the parties begin a <br /> sampling schedule for MW-2. <br /> Poplar Grove <br /> • The results of the June/July 1998 soil sampling will be included in the third quarter <br /> monitoring report. <br /> Soil Excavation <br /> • An evaluation of the soil data has been completed and this evaluation has led to the <br /> additional soil sampling proposed in this workplan. <br /> Fall 1998 Field Work <br /> 0 The enclosed Workplan shows the proposed well locations. <br />