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Page 20 of 25 <br /> Table 1 <br /> Historical Groundwater Gauging and Analytical Results <br /> Union Oil Company of California <br /> Former 76 Station No.4409/Phillips 66 Site 2469 <br /> 1602 North El Dorado Street,Stockton,CA <br /> Ethyl- Total <br /> Sample TOC DTW GWE TPH-g Benzene Toluene benzene Xylenes MTBE TBA EDB 1,2-DCA DIPE ETBE TAME Ethanol Comments <br /> Well ID Date (ft.amsl) (ft) (ft.amsp (pg/L) (pg/L) (pg/L) (p9/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) <br /> MW-15 02/28/20 11.57 18.45 -6.88 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br /> MW-16 D4/20/05 12.38 31.25 -18.87 410 11 31 13 66 <0.50 <5.0 <0.50 0.62 <0.50 <0.50 <0.50 <50 <br /> MW-16 08/19/05 12.38 33.32 -20.94 <50 <0.50 <0.50 <0.50 1.0 <0.50 <5.0 <0.50 0.50 <0.50 <0.50 <0.50 <50 <br /> MW-16 10/06/05 12.38 34.02 -21.64 100 0.77 <0.50 2.2 8.1 <0.50 <5.0 <0.50 0.74 <0.50 <0.50 <0.50 <50 <br /> MW-16 01/12/06 12.38 32.81 -20.43 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 - 0.87 <0.50 <0.50 <0.50 <250 <br /> MW-16 04/12/06 12.38 30.48 -18.10 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 - 1.0 <0.50 <0.50 <0.50 <250 <br /> MW-16 07/10/06 12.3E 30.48 -18.10 <100 <1.0 <1.0 <1.0 <2.0 <1.0 <20 1.1 0.0 <1.0 <1.0 <500 <br /> MW-16 10/18/06 12.38 30.90 -18.52 100 <1.0 <1.0 <1.0 <2.0 1.4 <20 - 1.5 <1.0 0.0 <1.0 <500 <br /> MW-16 03/12/07 12.38 29.30 -16.92 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 - 1.8 <0.50 <0.50 <0.50 <250 <br /> MW-16 05/15/07 12.38 29.20 -16.82 66 <0.50 <0.50 <0.50 <D.50 <0.50 <10 <0.50 1.8 <0.50 <0.50 <0.50 <250 <br /> MW-16 08/01/07 12.38 29.85 -17.47 87 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 2.0 <0.50 <0.50 <0.50 <250 <br /> MW-16 11/19/07 12.38 30.62 -18.24 97 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 2.4 <0.50 <0.50 <0.50 <250 <br /> MW-16 0122/08 12.47 29.80 -17.33 88 <0.50 <0.50 <0.50 0.0 <0.50 <10 <0.50 2.7 <0.50 <0.50 <0.50 <250 <br /> MW-16 04/07/08 12.47 28.82 -16.35 76 <0.50 <0.50 <0.50 0.0 0.97 <10 <0.50 2.1 <0.50 <0.50 <0.50 <250 <br /> MW-16 0721/08 12.47 30.21 -17.74 - <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 1.8 <0.50 <0.50 <0.50 <250 <br /> MW-16 1020/08 12.47 31.62 -19.15 100 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 2.2 <0.50 <0.50 <0.50 <250 <br /> MW-16 01/19/09 12.47 31.95 -19.4B 100 <0.50 <0.50 <0.50 0.0 <0.50 <10 <0.50 2.2 <0.50 <0.50 <0.50 <250 <br /> MW-16 0420/09 12.47 30.28 -17.81 79 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 2.0 <0.50 <0.50 <0.50 <250 <br /> MW-16 0720/D9 12.47 32.40 -19.93 150 <0.50 <0.50 <0.50 0.0 <0.50 <10 <0.50 4.7 <0.50 <0.50 <0.50 <250 <br /> MW-16 01/04/10 12.47 32.85 -20.38 110 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 4.2 <0.50 <0.50 <0.50 <250 <br /> MW-16 07/19/10 12.47 30.41 -17.94 - - - - - - - - - - - - - <br /> MW-16 01/05/11 12.47 30.27 -17.80 130 <0.50 <0.50 <0.5D 1.6 <0.50 <10 <0.50 3.2 <0.50 <0.50 <0.50 <250 <br /> MW-16 08/02/11 12.47 28.15 -15.68 - - - - - - - - -- - - - - <br /> MW-16 0327/12 12.47 27.13 -14.66 80 b <0.50 <0.5D <0.50 0.0 <0.50 <10 <0.50 3.4 <0.50 <0.50 <0.50 <250 <br /> MW-16 09/04/12 12.47 27.75 -15.28 - - - - - - - - -- - - - - <br /> MW-16 0225/13 12.47 26.49 -14.02 280 b <0.50 <0.50 <0.50 0.0 <0.50 <10 <0.50 5.1 <0.50 <0.50 <0.50 <250 <br /> MW-16 08/13/13 12.47 27.51 -15.04 - - - - - - - - -- - - - - <br /> MW-16 02/07/14 12.47 27.80 -15.33 110 <0.50 <0.50 <0.50 0.0 <0.50 <10 <0.50 6.0 <0.50 <0.50 <0.50 <250 <br /> MW-16 0924/14 12.47 29.62 -17.15 - - - - - - - - -- - - - - <br /> MW-16 03/18/15 12.47 29.97 -17.50 69 <0.50 <0.50 <0.50 0.0 <0.50 <10 <0.50 3.6 <0.50 <0.50 <0.50 <250 <br /> MW-16 0828/15 12.47 31.83 -19.36 - - - - - - - - - - - - - <br /> MW-16 03/30/16 12.47 31.00 -18.53 - <0.50 <0.50 <0.50 0.0 <0.50 <10 <0.50 2.1 <0.50 <0.50 <0.50 <250 <br /> MW-16 0829/16 12.47 31.16 -18.69 - - - - - - - - - - - - - <br /> MW-16 03/10/17 12.47 27.18 -14.71 68 <0.50 <0.50 <0.50 0.0 <0.50 <10 <0.50 2.4 <0.50 <0.50 <0.50 <250 <br /> MW-16 OB/11/17 12.47 25.07 -12.60 - - - - - - - - - - - - - <br /> MW-16 0228/18 12.47 23.98 -11.51 <50 <0.50 <0.50 <0.50 0.0 <0.50 <10 <0.50 2.0 <0.50 <0.50 <0.50 <250 <br /> MW-16 08/31/18 12.47 23.32 -10.85 - - - - - - - - - - - - - <br /> MW-16 03/01/19 12.47 21.52 -9.05 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 1.4 <0.50 <0.50 <0.50 <250 <br /> MW-16 09/05/19 12.47 19.94 -7.47 - - - - - - - - - - - - - <br /> MW-16 022820 12.47 19.31 -6.84 16 J <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 1.6 <0.50 <0.50 <0.50 <250 <br /> MW-17 0420/05 11.51 31.84 -20.33 30,0D0 1,100 2,500 750 4,100 <25 <50 <25 <25 <25 <25 <25 <2,500 <br /> GHD 11193145(6) <br />