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-NED <br /> URS REC E <br /> JAN 2 9 2004 <br /> ENVIRONME�J1 HEALTH <br /> January 28,2004 PERMIT/SERVICES <br /> Ms.Margaret Lagorio, Supervising REHS 00760 <br /> Site Mitigation Unit 06.a4 <br /> San Joaquin County Environmental Health Department <br /> 304 E.Weber Avenue,Third Floor <br /> Stockton,CA 95202-2708 <br /> Re: Workplan Addendum for Soil and Groundwater Assessment <br /> Former ARCO Service Station 760 <br /> 225 South Cherokee Lane,Lodi,California <br /> Dear Ms.Lagorio: <br /> URS Corporation Americas (URS) has received the letter from San Joaquin County Environmental <br /> Health Department (EHD) and reviewed your comments regarding the proposed Workplan for Soil and <br /> Groundwater Assessment dated January 13,2004(Attachment A). <br /> EHD approved the workplan with several conditions. One condition is to install a shallow well between <br /> the potential contaminant source area and the municipal well regardless of analytical results from grab <br /> groundwater samples. This well is to act as a sentinel well between the contaminant area and the City of <br /> Lodi municipal well and will be installed with the other wells, during the second phase of drilling at the <br /> site. Because a well is being required a groundwater grab sample in this area will not be necessary. The <br /> first phase will now consist of three soil borings with grab groundwater sampling. The second phase <br /> will now consist of the installation of one on-site deep groundwater monitoring well, one off-site shallow <br /> groundwater monitoring well and up to three additional off-site shallow groundwater monitoring wells as <br /> needed. <br /> If you have any questions or comments regarding this workplan addendum, please call Mr. Vernon <br /> Elarth at(916)679-2299. <br /> Sincerely, �RED,GE of <br /> ON <br /> ?A UC F OQx <br /> URS Corporation Americas <br /> No. 7 20 <br /> * _ Exp. , / G <br /> Matthew Farris Vernon Elarth,R.G. <br /> Staff Geologist Project Manager 9TF OF CA��FO� <br /> Enclosure: Attachment A SJCEHD Correspondence <br /> URS Corporation <br /> Crown Corporate Center <br /> 2870 Gateway Oaks Drive,Suite 300 <br /> Sacramento,CA 95833 <br /> Tel:916.679.2000 <br /> Fax:916.679.2900 K:\WprocessVS BP ARCO\00760\2004 Assessment\760 workplan addendum.doc <br />