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• i • <br /> CAMBRIA <br /> Table I 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 Organics by EPA 8260 <br /> (AgIL) (ub"-) (lign-) (lige-) (991L) (0191-) W(L) (Ag/L) <br /> Not detected except for n-Butylbenzene 360 sec-Butylbenzene 100 <br /> MW-8 02-Sep-97 <25,000 <5,000 <100 <100 <100 <10000 NA Ethylbenzene 2100 Isoproplybenzene 210,Naphthalene 280 n <br /> Propylbenzene 790 Toluene 720,1,24-Tnmethylbenzene 5100 <br /> 1,3 5-Tnmethylbenzene 1500 and Total Xylenes 9400 ppb <br /> MW 8 02-Dec-97 <31 000 <6,200 <120 <120 <120 <10,000 NA <br /> MW-8 29 Jan-98 <170 000 <33,000 <670 <670 <670 19 000 NA <br /> MW-8 23-Apr-98 <25000 05,000 <100 <100 1,100 53,000 NA <br /> MW-8 29 Jul 98 <16,600 <3 330 <67 <67 <67 14 000 NA <br /> MW-8 06-Oct-98 <25,000 <5 000 <100 <100 <100 18 000 NA <br /> MW-8 27-Jan-99 <1 000 <200 <4 0 <4 0 <4 0 <4 000 NA <br /> MW 8 15-Apr 99 <300 000 <20,000 <200 <200 214 7 100 NA <br /> MW-8 27 Jul 99 <50 000 <10 000 <100 <100 154 138 000 NA <br /> MW-8 28-Oct-99 <2,500 <500 <5 00 <5 00 <5 00 17 600 NA <br /> MW-8 01-Jan-W <66 700 <13,300 <133 <133 <133 28 900 NA <br /> MW-8 18-Apr 00 <20 000 2,620 <40 0 <40 0 4710 <5 000 NA <br /> MW 8 28-Jul-00 NA NA <100 <100 <100 <20 000 <100 DIP>w TAME,and EDB were analyzed outside of EPA <br /> recommended hold tune <br /> MW 8 19-oct-00 NA <100 <2 00 <2 00 <2 00 <10 000 NA DIPE,TAME TAA and ETBE were analyzed outside of EPA <br /> recommended hold tune <br /> MW-8 11 Jan-01 NA <200 <2 00 <2 00 <2 00 <5 000 NA <br /> MW-8 12 Apr-01 NA <200 <2 00 <2 00 <2 00 13,500 NA <br /> MW-8 30-Oct-01 NA <50 <2 0 <2 0 <2 0 <1000 NA <br /> MW-8 09-Jan-02 NA <50 <20 <20 <20 <1000 NA <br /> MW-8 18-Jul 02 NA 72 <2 0 <2 0 21 4,000 NA <br /> MW 9 02-Dec-97 <500 <100 <20 <20 <20 <1,000 NA <br /> MW-9 29-Jan-98 <500 <100 <20 <20 <20 <1000 NA <br /> MW-9 23 Apr-98 <500 <100 <2 0 <2 0 <20 <1000 NA <br /> MW-9 29-Jul-98 <500 <100 <2 0 <2 0 <2 0 <1,000 NA <br /> MW-9 06-Oct-98 <500 <100 <20 <20 <20 <1,000 NA <br /> MW 9 27-Jan-99 NA NA NA NA NA <1,000 NA <br /> MW 9 15-Apr-99 <3 000 <200 <2 00 <2 00 <2 00 <1,000 NA <br /> MW-9 27-Jul 99 NA NA NA NA NA <1000 NA <br /> MW-9 28-Oct 99 NA NA NA NA NA <1 000 NA <br /> MW 10 02 Dec-97 <500 <100 <2 0 <20 <20 <1000 NA <br /> MW 10 29-Jan 98 <500 <100 <2 0 <20 <2 0 <1,000 NA <br /> MW-10 23-Apr-98 <500 <100 <2 0 <2 0 <2 0 <1 000 NA <br /> MW-10 29 Jul-98 <500 <100 <2 0 <2 0 <2 0 <1 000 NA <br /> MW-10 06-Oct-98 <500 <100 <2 0 <2 0 <2 0 <1000 NA <br /> MW-10 27 Jan 99 NA NA NA NA NA <2 000 NA <br /> 0783 Page 3 of 9 <br />