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Nil <br /> 'yn �t"i� � <br /> -lei"" �° ,;�!{;T vw,� $'�.�.. �;�r�,�'"' ��'"'�' -�•a.^3..d.. <br /> I -'b <br /> 4 <br /> i.a <br /> FINAL kF2,EMAT1ON PIAN <br /> Shell Oil Company <br /> ` 620 West Charter Way,Stockton,California <br /> �? Delta Project No.40-88-586 <br /> Page 3 <br /> r <br /> 2.2 Site History and Oneration <br /> The original retail gasoline service station was coustructed in 1971. Three underground gasoline storage <br /> tanks and a waste oil storage tank were installed at the time of Site construe ti0l,. Vapor recovery lines were <br /> installed on the fuel dispensers in 1975, and nev pro3uct distribution ILIrS were installed in 1978. The <br /> original waste oil tank was removed in 1987 and replaced with a dual-waJ waste oil tank. The site remained <br /> in operation through October 1589. During early November 1989,the site wan demolished. The locations <br /> of the original storage tanks and pump islands are illustrated in Figure s. -The underground storage tanks <br /> and associated product lines ware removed during the week of November 13,1939. Three new,12,000-gallon <br /> underground gasoline;storage tanks were installed at the site during the week of November 27,1989. The <br /> new service station consists of gasoline sales,a convenience market,and a car wash. The station was <br /> completed in early 1790 and is currently in full operation(Figure 2). <br /> 1,4 <br /> Ya eu <br /> Prior to completion of the new facility, approrlmztely I,100 cubic rds.of soil containing petrol m, <br /> calntl ft e*sts and 600 cubic. ds of clean soils have been e3mavated�stoc pled,sam Ied,and!mnsported to <br /> yar Icp' P . ,..., <br /> tine Forvard;Vic.;Isiitdi9ll facility iri,8tocktsm�I_f. ta for disposal <br /> During this period of construction,Delta installed subsurface venting,prod act recovery,and water recovery <br /> lines to selexted monitoring wells in order to facilitate future remedial activities. A fenced remedial <br /> equipment area,complete with electrical h,;6kups,was also constructed. Figure 3 shows the subsurface line <br /> network that was instailM,as well as the location of the fenced remedial equipment area. This subsurface <br /> work was detailed in an April 13,1990,report,Interum Remedial Acl.,on Plan and Proposed Project Schedule. <br /> This report,including design calculation,is presented in Appendix A of this report. <br /> The subsurface lines currently in place at the site are shown in Figun: 3, and allow for the following <br /> btnadons of remedial activieies at each well: <br /> MW-2 Free product removal or ground water pumping combined with soil venting. <br /> NIW-3 Soil venting. <br /> MW-f, Soil venting. <br /> MW-5 ''tree pro3uct removal or ground water pumping combined with soil venting. <br /> MW-7 Free pieduct removal or ground water pumping combined with soil venting. <br /> MW-8 Free: product removal or ground water pumping combined with soil venting. <br /> MW-9 Free product removal or ground water pumping combined with soil venting. <br /> s�mwe �m <br />