Laserfiche WebLink
i <br /> In December 1989,WaterWork Corp drilled and sampled 5 soli borings to determine the extent <br /> of lead impaction in the vicinity of the former underground product storage tanks (Figure 3) <br /> Laboratory analyses of the soil samples collected during dnlling determined that all bongs <br /> contained non-detectable lead concentrations(WaterWork report dated June 1, 1990) However, <br /> petroleum hydrocarbon constituents were detected at levels above method detection limits in soil <br /> - samples collected from SBI and SB2 A summary of laboratory results are presented in Table <br /> 1 Laboratory reports with chwn-of-custody documents are included in Appendix I <br /> - Investigation of potential groundwater contamination was required by SJCPHS <br /> Table I Chevron Stockton Laboratory Analysis of Soils - December 1989 Results <br /> presented In mg/kg (ppm) <br /> DATE SAMPLE ID BENZENE TGLUFNE ETHYL- XYLENES TPHG LEAD <br /> BENZENE (1) (2) <br /> f4�BQ{� w df I Qff! exf a 11 e I 16V #d <br /> S81-25 NO ND ND NO NO ND <br /> _. SBI-35 NO 002 NO 0015 ND ND <br /> S8140 ND NO ND ND ND NO <br /> . 12/08184 S8210 ND ND NO ND ND ND <br /> ' SB2 25 6030 0 042 0 054 0 096 NO ND <br /> r" SB2 30 ND NO NO NO NO ND <br /> 38233 ND 0 045 0 024 014 10 ND <br /> S9240 NO NII ND NO ND ND <br /> 12111189 583-40 NO NO NO ND ND ND <br /> 12111189 SB4 35 ND NO NO NO ND ND <br /> SB440 NO NO ND NO ND ND <br /> 12111189 S85-30 NO NO NO NO NO NO <br /> 585 35 NO NO ND NO NO NO <br /> S8343 NO ND NO NO NO NO <br /> Method Dowamn tAmtts 0 005 001 001 001 10 0 5 <br /> Notes <br /> TPHG w Total Petroleum Hydmcafions as Gasoline <br /> BTEX -Analysts by EPA m6thod 801518020 <br /> (1) A Analysis by EPA m6thod$OTS <br /> (2) -DHS Methodology <br /> ND .Compounds Not Detetil,d ahur.Mclhod 1)0:61ton Limits <br /> Cbe US A 367 <br /> � t <br />