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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 DIPE ETBE TAME Methanol EDB Volatile Orgdnics by EPA 8260 <br /> (A91L) OWL) (lag[L) (lig L) (µgIL) (1rgR-) (AgIL) (AgI-) <br /> Not detected except for n Butylbenzene 360 sec Butylbenzene 100 <br /> MW-8 02-Sep-97 <25000 <5000 <100 <100 <100 <10000 NA Ethylbenzene 2100 Isoproplybenzene 210 Naphthalene 280 n <br /> Propylbenzene 790 Toluene 720 1 24•Trimethylbenzene 5100 <br /> 13 5 Trimethylbenzene 1500 and FoU 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 60000 <10000 <100 <100 154 138000 NA <br /> i <br /> MW 8 28 Oct-99 <2500 <500 <5 00 <5 00 <5 00 17600 NA <br /> MW 8 01-Jan-00 <66700 <13300 <133 <133 <133 28900 NA <br /> MW 8 18 Apr-00 <20000 2620 <40 0 <40 0 471 <5000 NA <br /> MW$ 28 Ju100 NA NA [100 <E00 [100 [20000 [100 DIPS TAME and EDB were analyzed outside of EPA <br /> recommended hold time <br /> MW 8 19 Oct-00 NA <100 <200 <2 00 <2 00 <ip000 NA DIPE TAME TBA and ETBE were analyzed outside of EPA <br /> recommended hold time <br /> MW-8 I 1 Jan-01 NA <200 <2 00 <2 00 <2 00 <5000 NA <br /> MW-8 12 Apr 01 NA <200 <200 <200 <200 13 500 NA <br /> MW 8 10 Oct 01 NA <50 <2 0 <2 0 <2 0 <1000 NA <br /> MW-9 02 Dec 97 <500 <100 <20 <20 <20 <low NA <br /> MW 9 29-Jan 98 <500 <100 <20 <20 <2 0 <1000 NA <br /> MW-9 23 Apr 98 <500 <100 <20 <20 <20 <1000 NA <br /> MW 9 29 Jul-98 <500 <100 <20 <20 <2 0 <1000 NA <br /> MW-9 06-Oct 98 <500 <100 <20 <20 <20 <1000 NA <br /> MW 9 27 Jan 99 NA NA NA NA NA <2000 NA <br /> MW 9 15 Apr 99 <3000 <200 <2 00 <2 00 <2 00 <1000 NA <br /> MW 9 27 Jul 99 NA NA NA NA NA <1000 NA <br /> MW 9 28 Qct-99 NA NA NA NA NA <1000 NA <br /> MW 10 02-Dec 97 <500 <100 <2 0 <2 0 <20 <1000 NA <br /> MW 10 29-Jan 98 <500 <100 <2 0 <2 0 <20 <1000 NA <br /> MW 10 23-Apr 98 <500 <100 <2 0 <2 0 <20 <1000 NA <br /> MW 10 29-Jul 98 <500 <100 <2 0 <2 0 <20 <1000 NA <br /> MW 10 06-Oct 98 600 <100 <2 0 <2 0 <20 <1000 NA <br /> MW 10 27 Jan 99 NA NA NA NA NA <2000 NA <br /> MW 10 15 Apr 99 <3000 <200 <2 00 <2 00 <2 00 <1000 NA <br /> MW-10 27-Jul-99 NA NA NA NA NA <1000 NA <br /> 0783 Page 3 of 9 <br />