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CAMBRIA <br /> Table 1 Additional Groundwater Analytical Data,Shell-branded Service Station 2575 Country Club Boulevard,Stockton California <br /> Sample Date Ethanol TBA DIPS ETBE TAME Methanol EDB Volatile Organics by EPA 9260 <br /> (pglL) (µglL) (pg/L) (µglL) (µglL) (pgIL) (pWL) (Hg/L) <br /> MW 7 02-Sep 97 <500 <100 <2 0 <2 0 <2 0 <1000 NA Not detected <br /> MW 7 02 Dec 97 <500 <100 <2 0 <2 0 <2 0 <1000 NA <br /> MW 7 29-Jan-98 <500 <100 <2 0 <2 0 <2 0 <1000 NA <br /> MW 7 23 Apr-98 <500 <100 <2 0 <2 0 <2 0 <1000 NA <br /> MW 7 29 Jul-98 <500 <100 <2 0 <2 0 <2 0 <1000 NA <br /> MW-7 06 Oat-98 <500 <100 <2 0 <2 0 <2 0 <1000 NA <br /> MW-7 27-Jan 99 NA NA NA NA NA <2000 NA <br /> MW-7 15 Apr 99 <3000 <200 <2 00 <2 00 <2 00 <1000 NA <br /> MW-7 27-Jul 99 NA NA NA NA NA <1000 NA <br /> MW 7 27 Jul 99 NA NA NA NA NA <1000 NA <br /> MW-7 28 Oct-99 NA NA NA NA NA <1000 NA <br /> Not detected except for n-Butylbenzene 360 sec Butylbenzene 100 <br /> MW-9 02 Sep 97 <25000 <5000 <100 <100 <100 <10000 NA Ethylbenzene 2100 Isoproplyberimne 210 Naphthalene 280 n <br /> Pfopyibenzcne 790 Toluene 720 1,2 4 Tnmethylbenzene 5100 <br /> 1 3 5-Tnmethylbenzene 1500 and Total Xylenes 9400 ppb <br /> MW-8 02 Dec 97 <31000 <6200 <120 <120 <120 <10000 NA <br /> MW-8 29-Jan 98 <170000 <33000 <670 <670 <670 19000 NA <br /> MW 8 23 Apr 98 <25000 <5000 <100 <100 1100 53000 NA <br /> MW-8 29 Jul-98 <16600 <3330 <67 <67 <67 14000 NA <br /> MW 8 06-Oct 98 <25000 <5000 <100 <100 <100 18000 NA <br /> MW 8 27 Jan 99 <1000 <200 <4 0 <4 0 <4 0 <4000 NA <br /> MW 8 15 Apr 99 <300000 <20000 <200 <200 214 7100 NA <br /> MW-8 27 Jul 99 <50000 <10000 <100 <100 154 138000 NA <br /> MW-8 28-Oct 99 <2500 <500 <5 00 <5 00 <5 00 17600 NA <br /> MW 8 O1 Jan-00 <66700 <13300 <133 <133 <131 28900 NA <br /> MW 8 18-Apr-00 <20000 2620 <40 0 <40 0 47 1 <5000 NA <br /> MW 8 28-Jul 00 NA NA <100 <100 <100 <20000 <100 DIPE TAME and EDB were analyzed outside of EPA recommended <br /> hold time <br /> MW 8 19 Oct 00 NA <100 <2 00 <2 00 <2 00 <10000 NA DIPE TAME TBA and ETBE were analyzed outside of EPA <br /> recommended hold time <br /> MW-8 I1-Jan-03 NA <200 <2 00 <2 00 <2 00 <5000 NA <br /> MW-9 02 Dec 97 <500 <100 <2 0 <2 0 <2 0 <1000 NA <br /> MW 9 29 Jan 98 <500 <100 <2 0 <2 0 <2 0 <1000 NA <br /> MW 9 23 Apr 98 <500 <100 <2 0 <2 0 <2 0 <1000 NA <br /> MW 9 29 Jul 98 <500 <100 <2 0 <2 0 <2 0 <1000 NA <br /> 0783 Page 3 of 10 <br />