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KL E/NFEL DER S ocl ton, <br /> 2001 Arch-Airport Ro1CA <br /> Bright People.Right Solutions. 95206 <br /> pl 209.948.1345 <br /> f 1209.234 4700 <br /> File No. 48093.E01 kleinfelder.com <br /> April 19, 2010 <br /> Mr. Tim O'Brien <br /> Regional Water Quality Control Board <br /> 11020 Sun Center Drive, #200 <br /> Rancho Cordova, CA 95670-6114 <br /> Subject: Work Plan Addendum <br /> Limited Groundwater Sampling and Analyses <br /> Proposed Land Application Area 7R <br /> Oakwood Lake Water District <br /> Wastewater Treatment Facility <br /> Manteca, California <br /> Dear Mr. O'Brien: <br /> Kleinfelder submitted a work plan dated March 26, 2010, to install temporary well points <br /> in a proposed expanded Land Application Area near the southern portion of the subject <br /> property. The Regional Water Quality Control Board (RWQCB) provided conditional <br /> approval of the work plan in a letter dated April 8, 2010. This addendum addresses the <br /> conditions mentioned in the letter and additional comments raised during a follow-up <br /> conference call with the RWQCB on April 15, 2010. We appreciate your <br /> responsiveness to the Oakwood Lake Water District and trust the proposed actions and <br /> comments herein will satisfy the RWQCB's conditions. <br /> Sincerely, <br /> KLEINFELDER WEST, INC. yDNAL �F <br /> GLAS yo�0 <br /> o <br /> (� No.7D71 <br /> eSeni <br /> FrGeologist <br /> = Exp. 12-31-11 <br /> `rte <br /> 91,F OF <br /> C A`\�o�� <br /> DH-Ir <br /> Attachment: Workplan Addendum <br /> 48093.E01/ST010R161 Copyright 2010 Kleinfelder <br />