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s s • CAMBRIA _ Table 1 Additional Groundwater Analytical Data,Shell-branded Service Station,2575 Country Club Boulevard,Stockton,California Sample Date Ethanol TBA DIPE ETBE TAME Methanol EDB Volatile Organics by EPA 8260 (99/L) (IBB-) (AgIL) (1<gR-) (Kgf-) (n/W (l11;n-) (IWL) MW 5 27-Jul 99 <1 250 000 <250,000 <2 500 <2 500 5 100 <20 000 NA MW 5 28-Oct 99 <1000 000 <200 000 <2,000 <2 000 3 490 <10 000 NA MW 5 28 Jan-00 <625 000 <125 000 <1,250 <1 250 3,020 <10000 NA MW-5 18 Apr 00 <250 000 28 200 <500 <500 920 <20 000 NA MW-5 28-Ju1-00 NA NA <10 000 <10,000 <10 000 <20,000 <10000 DIPE TAME and EDB were analyzed outside of EPA recommended hold tune MW-5 19 Oct-00 NA <100 000 <2,000 <2 000 <2,000 <20 000 NA DIPE TAME TBA and ETBE were analyzed outside of EPA recommended hold tune MW 5 11-Ian-01 NA <20,000 <200 <200 1 090 X20000 NA MW 5 12-Apr 01 NA <10,000 <100 <100 457 <20000 NA MW-5 30-Oct-0I NA 28 000 <200 <200 1 600 <1 000 000 NA MW-5 09 Jan-02 <1,000 30 000 <100 <100 770 <400,000 NA MW 5 18 Jul-02 NA 4,900 <100 <100 120 <10,000 NA MW-5(DUP) 29 Jan 98 <2 500 000 <500 000 <10000 <10,000 <10000 300 000 NA MW-5(DUP) 23 Apr 98 <2 500 <500 <10 <10 2,500 71 000 NA MW-5(DUP) 29-Jul-98 <2 500 000 600 000 <10000 <10 000 <10 000 170 000 NA MW-5(DUP) 06-Oct-98 <1250,000 X250000 <5000 <5,000 <5000 120000 NA MW-6 02-Sep-97 <500 <100 <2 0 <2 0 <2 0 <l 000 NA Not detected MW-6 02-Dec 97 <500 <100 <2 0 <2 0 <2 0 <1000 NA MW-6 29-Jap-98 <500 <100 <2 0 <2 0 <2 0 <1,000 NA MW 6 23-Apr-98 <500 <100 <2 0 <2 0 <2 0 <l 000 NA MW-6 29 Jul 98 <1 250 <250 <5 0 <5 0 <5 0 <1000 NA MW 6 06-Oct 98 <500 <100 <2 0 <20 <2 0 <1000 NA MW-6 27-Jan 99 <500 <100 <20 <20 <2 0 <2 000 NA MW-6 15 Apr-99 <3 000 <200 <2 00 <2 00 <2 00 <1000 NA MW-6 27 Jul 99 <1,000 <200 <2 00 <2 00 <2 00 <1000 NA MW-6 28 Oct-99 <1000 <200 <2 00 <2 00 <2 00 <1000 NA MW 7 02 Sep-97 <500 <100 <2 0 <2 0 <20 <1,000 NA Not detected MW 7 02-Dec 97 <500 <100 <20 <2 0 <20 <1 000 NA MW 7 29-Ian-98 <500 <100 <2 0 <2 0 <2 0 [1,00(1 NA MW 7 23-Apr 98 <500 <100 <2 0 <2 0 <2 0 <1 000 NA MW-7 29-Jul-98 <500 <100 <2 0 <2 0 <2 0 <1 000 NA MW-7 06-Oct 98 600 <100 <2 0 <2 0 <2 0 <1,000 NA MW-7 27 Jan 99 NA NA NA NA NA <2 000 NA MW-7 15 Apr-99 <3 000 <200 <2 00 <2 00 <2 00 MW 7 27 Jul 99 NA NA NA NA NA MW-7 27-Jul-99 NA NA NA NA NA <1000 NA MW-7 28-Oct-99 NA NA NA NA NA <1000 NA 1 0783 Page 2 of 9