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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 TRA DIPE ETBE TAME Methanol EDB Volatile Organics by EPA 8260 <br /> (ugIL) (1191-) (AgfL) (µms) (AgIL) (P8R-) (lam) (A91L) <br /> Not detected except for n-Butylbenzene 360 sec-Butyibenzene 100 <br /> MW-8 02-Sep-97 <25,000 61000 <100 <100 <100 <10,000 NA Ethylbenzene 2100,Isoproplybeazene 210,Naphthalene 280,o- <br /> Propylbenzene 790,Toluene 720 12 4-Tnmethylbenzene 5100 <br /> 13 S-Trimethylbenzene 1500,and Total Xylenes 9400 ppb <br /> MW 8 02-Dec-97 <31000 <6 200 <120 <120 <120 <10 000 NA <br /> MW-8 29-Jan-98 <170000 <33000 <670 <670 <670 19,000 NA <br /> MW-8 23-Apr-98 <25000 <5000 <100 <100 11100 53,000 NA <br /> MW-8 29 Jul 98 <166W <3,330 <67 <67 <67 14000 NA <br /> MW-8 06-Oct-98 <25 000 <5 000 <100 <100 <100 181000 NA <br /> MW 8 27-Jan-99 <1,000 1200 <4 0 <40 <4 0 <4 000 NA <br /> MW 8 15 Apr-99 <300000 <20000 <200 <200 214 7,100 NA <br /> MW-8 27-Jul-99 <50,000 <10000 <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-00 <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 61000 NA <br /> MW 8 28-Ju1-00 NA NA <100 <100 <100 <20 000 <100 DQE,TAME and EDB were analyzed outside of EPA <br /> recommended hold lune <br /> MW-8 19-0ct-00 NA <100 <2 00 <2 00 <2 00 <10 000 NA RIPE,TAME,TBA and EfBE were analyzed outside of EPA <br /> recommended hold time <br /> MW-8 11-Jan-01 NA <200 <200 <200 <200 <5000 NA <br /> MW 8 12-Apr-01 NA <200 <2 00 12.00 <2 00 13 500 NA <br /> MW 8 30-Oct-01 NA <50 <2 0 <2 0 <2 0 <1,000 NA <br /> MW-8 09 Jan-02 NA 60 <2 0 <2 0 <2 0 <1 000 NA <br /> MW 8 01 May-02 NA <50 <2 0 <2 0 <2 0 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 <2 0 <2 0 <20 <1,000 NA <br /> MW 9 23-Apr-98 <500 <100 <20 <2 0 <2 0 <1000 NA <br /> MW-9 29 Jul 98 600 <100 <20 <2 0 <2 0 <1000 NA <br /> MW 9 06-Oct-98 <500 <100 <20 <20 <2 0 <1000 NA <br /> MW 9 27-Ian-99 NA NA NA NA NA <1000 NA <br /> MW 9 15-Apr 99 <3,000 <200 <2 00 <2 00 <2 00 <1000 NA <br /> MW-9 27-Jul-99 NA NA NA NA NA <1,000 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 <2 0 <1 000 NA <br /> MW 10 29 Jan 98 <500 <100 <20 <20 <20 <1,000 NA <br /> MW 10 23-Apr-98 <500 <100 <2 0 <20 <20 <1000 NA <br /> MW 10 29 Jul 98 600 <100 <20 <20 <20 <1,000 NA <br /> MW-10 06-Oct-98 <500 <100 <20 <20 <20 <1000 NA <br /> MW-10 27-Jan-99 NA NA NA NA NA <2000 NA 1 <br /> 0793 Page 3 of 9 <br />