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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 DIPS ETBE TAME TBA Methanol Ethanol EDB Volatile Organics by EPA 8260 <br /> (AgIL) (µgIL) (ug/L) (AgIL) (AgfL) (AgIL) (AgfL) (u€!E) <br /> MW 14 29 Jan 98 <2 0 <20 <20 <100 <1 000 <500 NA <br /> MW 14 23 Apr 9B <20 <20 <20 <100 <1 000 <500 NA <br /> MW 14 29 Jul 98 <20 <2 0 <2 0 <100 <1 000 <500 NA <br /> MW 14 06-Oct 98 <20 <2 0 <2 0 <100 <1 000 <500 NA <br /> MW 14 27 Jan 99 <2 0 <2 0 <2 0 <100 <2,000 <500 NA <br /> MW 14 15 Apr 99 <2 00 <2 00 <2 00 <200 <1 000 <3 000 NA <br /> MW 14 27 Jul 99 <2 00 <2 00 <2 00 <200 <1 000 <1 000 NA <br /> MW 14 28 Oct 99 <2 00 <2 00 <2 00 <200 <1 000 <1 000 NA <br /> RW IA 02 Sep 97 <4,000 <4 000 <4,000 <200 000 280 000 <1 000,000 NA Not detected except Benzene 13000 Tolw ne 15000 and Total <br /> Xylenes 9400 ppb <br /> RW lA 02 Dec 97 <2 000 <2 000 <2 000 <100 000 82 000 <500 000 NA <br /> RW]A 29 Ian 98 <5 000 <5 000 <5 000 <250 000 100 000 <1 200 000 NA <br /> RW IA 23 Apr 98 <20 <20 5 300 00 <1 000 110000 <5 000 NA <br /> RW IA 29 Jul 98 <5 000 <5 000 <5 000 <250 000 110000 <l 250 000 NA <br /> RW IA 06 Oct 98 <4 000 <4 000 4 300 <200 000 98 000 <l 000 000 NA <br /> RW IA 27 Jan 99 <10 000 <10000 <10 000 <500 000 180 000 <2 500 000 NA <br /> RW 1 A 15-Apr 99 <2 000 <2 000 2200 <200 000 49 000 <3 000 000 NA <br /> RW 1 A 27 Jul 99 <2 500 <2 500 4 040 <250 000 15 200 <1 250 000 NA <br /> RW IA 28-Oct 99 <2 500 <2 500 2 830 <250 000 <10 000 <1 250 000 NA <br /> RW IA 28 Jan 00 <1430 <1430 2370 <143000 <10000 <714000 NA <br /> RW IA 18 Apr 00 <2 000 <2 000 3 110 <100000 <20 000 <I 000 000 NA <br /> RW I A 28 Jul 00 <10000 <10000 <10 000 NA <20 000 NA <10 000 DB}£TAME and EDB were analyzed outside of EPA recommended <br /> hold time <br /> RW lA 19 Oct 00 <1 250 <1 250 <I 250 <62 500 <101 000 NA NA RIPE TAME TBA and ETBE were analyzed outside of EPA <br /> recommended hold time <br /> RW IA I I Jan 01 <200 <200 1 520 <20 000 <5 00 NA NA <br /> RW IA 12 Apr 01 <I00 <100 1730 <10000 <20000 NA NA <br /> RW IA 30.Oct01 <200 <200 1300 14000 <350000 NA NA <br /> RW IA 09 Jan 02 <200 <200 1900 11 000 <1 000 000 <2000 NA <br /> RW IA 11 Oct 02 <I00 <100 860 5 900 <10 000 NA NA <br /> RW lA 06 Jan 03 <25 <25 380 1,700 <2,500 NA AA <br /> RW IA(DUP) 02 Sep 97 <5 000 <5 000 <5 000 <250 000 240 000 <l 250 000 NA Not detected except Benzene 14000 Toluene 18000 and Total <br /> Xylenes 13000 ppb <br /> RW IA(DUP) 02 Dec 97 <2 500 <2 500 <2 500 <120 000 77 000 <620 000 NA <br /> I <br /> 0783 Page 5 of 9 <br />