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{ Kennedy/Jenks Consultants <br /> Mr. Timothy R. O'Brien <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 12 June 2008 <br /> Page 2 <br /> application. Groundwater quality in Well MW-4 will be monitored for at least one year prior to <br /> process water application on the parcel. <br /> Comment 2: No wells were proposed for the areas downgradient of the new land application <br /> areas. Please add a groundwater monitoring well downgradient of each of the new land <br /> application areas. <br /> Response to Comment 2: See Figurel attached, Revised Facility Map and Proposed Monitoring <br /> Well Location. The revised figure shows a proposed monitoring well on the downgradient side of <br /> the 30-acre parcel and the 60-acre parcel (two proposed monitoring wells). The well on the <br /> downgradient side of the 60-acre parcel is offset to the east to provide a wider area on which to <br /> base interpretation of the groundwater elevation data. <br /> Consistent with your 14 May 2008 letter, we will begin work installing the new monitoring wells <br /> after 12 July 2008 (30 days from submittal of this addendum). If you have any questions about <br /> this addendum, please contact me at 415-243-2524 or Mr. John Yarborough of Delicato at <br /> 209-601-3222. <br /> Very truly yours, <br /> K NE/DY/Y/JENKS CONSULTANTS <br /> Robert S. Chrobak, P.E. <br /> Vice President <br /> Enclosure <br /> cc: John Yarborough, Delicato <br /> g5s.graupladmngab)DM765007.00_delic&W6<wspncNhlft u install wrk pin addendumlwrk pin addendumdr.dca <br />