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HYDR(JFOCUSZ <br /> June 14, 2007 <br /> ' Mr. Timothy R. O'Brien <br /> Waste Discharge to Land Unit <br /> California Regional Water Quality Control Board <br /> ' 11020 Sun Center Drive #200 <br /> Rancho Cordova, CA 95670-6114 <br /> ' Subject: Revised Master Groundwater Well Installation <br /> and/or Destruction Workplan, <br /> City of Lathrop, Order No. R5-2006-0094 <br /> ' Dear Mr. O'Brien, <br /> ' Please find the enclosed revised Master Groundwater Well Installation and/or <br /> Destruction Workplan (Master Workplan). This Master Workplan was prepared <br /> on behalf of the City of Lathrop pursuant to the Waste Discharge Requirements <br /> ' of RWQCB Order R5-2006-0094. <br /> The enclosed Master Workplan was revised as requested by your April 10, 2007 <br /> letter to Mr. Cary Keaten, City of Lathrop "Incomplete Report, Master <br /> Groundwater Well Installation and/or Destruction Workplan, WDRs Order No. <br /> R5-2006-0094, City of Lathrop, San Joaquin County'. For reference, a copy of <br /> ' your April 10, 2007 letter and a summary of our specific replies to your requested <br /> changes and/or revisions are provided as part of the attached revised Master <br /> Workplan (see Appendix A). <br /> ' Please direct any questions regarding this Master Workplan to John Fio at (530) <br /> 756-2840. <br /> tSincerely, <br /> ' John L. Fio -Linda D. Bond, R. �D <br /> No.16S16 <br /> Hydrologist Hydrogeologist IF N 4IFin <br /> 9XILOW <br /> ' Enclosures (1) q <br /> ' cc: Mr. Philip Ciralsky, City of Lathrop CA1JF <br /> Mr. Dave Umezaki, Erler & Kalinowski, Inc., Burlingame <br /> Mr. Mike Infurna, San Joaquin County Environmental Health Department, Stockton <br /> "..O. Iiox 2-101, Davis, GA 9,)617-240146 lel: ()3(p 1`50-284046 Fax. i�W) 7�i6-168 <br /> P.O. Box 477, Dixon, CA 95620-0477 6 Tel/Fax: (707) 678-6458 <br /> www.hydrofocus.com <br /> i <br />