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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 DIPE ETBE TAME TBA Methanol Ethanol EDB Volatile Organics by EPA 9260 <br /> (lzg/L) (FtB(E) (Ag/L) (A91L) (ug/L) (Ag/L) (lig/L) (uP/L) <br /> I <br /> MW 7 28 Oct 99 NA NA NA NA <1 000 NA NA <br /> Not detected except for n Butylbenzene 360 sec Butylbenzene 100 <br /> MW 8 02 Sep 97 <100 <100 <100 <5,000 <10 000 <25000 NA Ethylbenzene 2100 [soproplybenzene 210 Naphthalene 280 n <br /> Propylbenzene 790 Toluene. 720 1 24Tnmethylbenzene 5100 <br /> 13 5 Tnmethylbenzene 1500 and Total Xylenes 9400 ppb <br /> MW 8 02 Dec 97 <120 <120 <120 <6 200 <10 000 <31000 NA <br /> MW 8 29 Jan 98 <670 <670 <670 <33 000 19 000 <170 000 NA <br /> MW 8 23 Apr 98 <100 <100 1 100 <5 000 53 000 <25000 NA <br /> MW 8 29 Jul 98 <67 <67 <67 <3 330 14 000 <16 600 NA <br /> MW 8 06 Oct 98 <100 <100 <100 <5 000 19000 <25 000 NA <br /> V1W 8 27 Jan 99 <4 0 <4 0 <4 0 <200 <4 000 <l OOD NA <br /> MW 8 15 Apr 99 <200 <200 214 <20000 7 100 <300000 NA <br /> MW 8 27 Jul 99 <100 <100 154 <10 000 138 000 <50 000 NA <br /> MW 8 28 Oct 99 <5 00 <5 00 <5 00 <500 17 600 <2 500 NA <br /> MW 8 01 Jan 00 <133 <133 <133 <13 300 28 900 <66 700 NA <br /> MW 8 18 Apr 00 <40 0 <40 0 4710 2 620 <5 000 <20 000 NA <br /> MW 8 28 Jul 00 <100 <100 <100 NA <20,000 NA <100 DIPE TAME and EDB were analyzed outside of EPA recommended <br /> hold nmL <br /> MW 8 19 Oct 00 <200 <2 00 <2 00 <100 <10000 NA NA DIPE TAME TBA and ETRE wire analyzed outside of EPA <br /> recommended hold time <br /> MW 8 11 Jan 01 <2 00 <2 00 <2 00 <200 <5 000 NA NA <br /> MW 8 12 Apr 01 <2 00 <2 00 <2 00 <200 13500 NA NA <br /> MW 8 30 Oct 01 <20 <2 0 <20 <50 <1000 NA NA <br /> MW 8 09 Jan-02 <2 0 <20 <20 <50 <1 000 NA NA <br /> MW 8 18 Jul 02 <20 <20 21 72 <t 000 NA NA <br /> MW8 11Oct 02 <20 <20 <20 <50 <1000 NA NA <br /> M W 8 06 Jan 03 <20 <2 0 34 650 4,000 NA NA <br /> I <br /> MW 9 02 Dec 97 <20 <20 <20 <100 <l 000 <500 NA <br /> MW 9 29 Jan 98 <20 <2 0 <20 <100 <l 000 <500 NA <br /> MW 9 23 Apr 98 <20 <20 <20 <100 <1 000 <500 NA <br /> MW 9 29 Jul 98 <20 <20 <20 <100 <1 000 <500 NA <br /> MW 9 06-Oct 98 <20 <20 <20 <IW <t 000 <500 NA <br /> MW 9 27-Jap 99 NA NA NA NA <1 000 NA NA <br /> MW 9 15 Apr 99 <2 00 <2 00 <2 00 <200 <l 000 <3 000 NA <br /> MW 9 27 Jul 99 NA NA NA NA <l 000 NA NA <br /> MW 9 28 Oct 99 NA NA NA NA <1 000 NA NA <br /> MW 10 02 Dec 97 <20 <20 <20 <100 <l 000 <500 NA <br /> MW 10 29 Jan 98 <20 <2 0 <20 <100 <1 000 <500 NA <br /> 0783 Page 3 of 9 <br />