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1117 Lone Palm Avenue <br /> Suite B <br /> Modesto, CA 85351 <br /> 209279.2221 <br /> Fax 209.579.2225 <br /> A S SOCIATES INC . <br /> ENVIRONMENTAL HEALTH DIVISION <br /> 304 E.Weber Ave.'Third Floor �� <br /> P. a.Box 388,Stockton CA 96201-0388 f` " ` , n <br /> March 3, 1999 Approved Eg , <br /> 62574.0005 denied 0 MAR <br /> 41999 <br /> Conditions,* Sem u�5 Cn,iwf 441 <br /> ©.its by ri}�FSA t�5 <br /> Ms.Lori Duncan <br /> San Joaquin County Public Health <br /> Services,Faeviron Health Division <br /> 304 E.Weber Street Third Floor <br /> -Stockton, CA 95202 <br /> Subject. Workplan for Installation of Groundwater Monitoring Wells;at City of Stockton <br /> Fire Station No. 3 1116 First Street, Stockton, California <br /> Dear Ms. Duncan: <br /> ATC Associates Inc. has prepared this workplan, on behalf` of the City of Stockton, for the <br /> performance of groundwater monitoring well installation activities:atthei above referenced site. <br /> The purpose of the well installation is to evaluate the lateral extent ofpetroleum. sail and <br /> groundwater in the vicinity of the former underground storage tank(CYST). This w <br /> It the; direction of San Joaquin County Public Health Services Environmental Health Division <br /> (FHSIEW). <br /> The:scope of work includes obtaining,permits, advancing two soil borings and collecting soil <br /> samples. installing two ;groundwater monitoring wells, developing the wells, collecting <br /> groundwater samples, laboratory analysis of selected soil and groundwat0 samples,and preparing <br /> A:surnmary report. The scope of work is described in detail in the following paragraphs. <br /> 8 LOCATION <br /> The site.i&located on the south side of First Street and the:east side of Union Street in Stockton, <br /> Cllll armia, as shower on Figure 1, The location is primarily a commercial and residential area. <br /> The ate Iii currently±occupied by the City of Stockton Fire Station No. 3. <br /> BACKGROUND <br /> One gasoline underground. storage tank (UST) of unknown size, and all associates) piping and <br /> dispensing.equipment were removed and transported from the site. Laboratory analysis of soil <br /> samples collected from beneath the former UST location indicated the :presence of detectable <br /> concentrations of total petroleum'hydrocarbons. After the tank was removed, the area of the <br /> former tank was backfilled. 'followu►g tank removal activities, four sail borings.(Sly-1 through <br /> w-.%2574.4*V"b%Vkrn+A*0 <br />