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' 05/22/2002 10 00 20945;'"'33 FIFTH FLOOR PAGE 02 <br /> i <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br />' G <br /> Donna.K.Heron,Ti.1=,-R5 Ursrt,5'rcpervrsnrs <br /> DireCior 304 East Weber Avenue,Third Floor Carl Borginan,R.E H S <br /> Al 01sen,ILE a s. StocktonCalifornia 95202-2708 Make Huggins,RE H S,F-D L <br /> Pro rum Man ,Manager Douglas W Wilson,IL.E T i 8 <br /> Laurie A CatuI12,R.E ELS Telephonc (2.09) 468-3420 Margaret T.agono R-11 Id.B <br /> Program Adanager Fax (209) 464-0138 Robcit McClcllor� R B H S <br /> Marls$arcollos R E H S <br /> REST VCTURE PETROLEUM A�-MgG SERVICES oF CALJFORN7a,INC <br />' 205 SOUTH H00V-ER BLVD , SUT'T L 101 <br /> TA vTA, FL 33609 <br />' RE 2537 Waterloo Rd.,Stockton (Former E Z Seine#100966) Site Code_ 1757 <br /> WORKPLAN Work flan Por Additional Assessment,Remediation Well Installanon and Feasibility Studies <br />' DATED December 21,2001 <br /> PREPARED BY ATC <br />' APPROVED <br /> TISAPPRO VED <br /> ADDENDUM NEEDED � Subinit lin <br /> ADEQUATE AND NECESSARY PLEMBNTS OF THE WORK PLAN[J&S 25299 37,subd(c)(3)) <br /> I To mstaII 5 monitoring wells, oat groundwater extraction well,and 3 vapor extraction wells <br />' 2 To sample and analyze selected soLl collected during,drill,na(EPA method 8015 and 8260b) <br /> 3 To collected and analyze groundwater from dcvAoped MWs (80l 5 and 8264b). <br /> 4 To perform feasibility testing soil vapor extraction vnth air sparging and groundwater aquifer testing <br /> 5 Based upon data evaluation.a Corrective Action Plan will be corriplcted <br /> COMMENTS AND CONDI'T'IONS <br /> 1 Analyze all groundwater sarrsp;cs for 1,2 DCA and 5 oxygenates <br /> 2 Reduce sainphng frequency of flooded 4 mch diameter MWs <br /> 3 Made eo=eetions to report uzaccuracies(i a coostniction aeta.ils of existing air sparge wells and vapor <br />' extinction wells) <br /> 4 Perform a well receptor survey with a 2000 foot radius from the site <br />' The"Tin-Regional Board Staff Recommendations For Prelm=nary Evaluation and Investigation of Underground <br /> Tari: Sites"along with its"Appendix A'and"Appendix 13"should be used as guidance documents All work and <br /> reports which require geological or engineering evaluation must be performed under the direction of an appropnatc <br />' California registered or ceraficd profcssionaL <br /> 1 <br /> • DATED BY <br /> Harlin KnolI Senior RENS(209)468-34,42 <br /> 1 <br />