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Page 16 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 />1502 North El Dorado Street, Stockton, CA <br />Well ID <br />Sample <br />Date <br />TOC <br />(ft. ems() <br />DTW <br />(ft) <br />OWE <br />(ft. amsl) <br />TPH-g <br />(pg/L) <br />Benzene <br />(pg/L) <br />Toluene <br />(pg/L) <br />Ethyl- <br />benzene <br />(pg/L) <br />Total <br />Xylenes <br />(pg/L) <br />MTBE <br />(pg/L) <br />TBA <br />(pg/L) <br />EDB <br />(pg/L) <br />1,2-DCA <br />(pg/L) <br />DIPE <br />(pg/L) <br />ETBE <br />(pg/L) <br />TAME <br />(pg/L) <br />Ethanol Comments <br />(pg/L) <br />MW-12 07/10/06 10.64 27.20 -16.56 <50 <0.50 <050 <0.50 <1.0 6.5 <10 - 25 0.96 <0.50 <0.50 <250 <br />MW-12 10/18/06 10.64 28.37 -17.73 <50 <0.50 <0.50 <0.50 <1.0 5.9 <10 - 25 1.2 <0.50 <0.50 <250 <br />MW-12 03/12/07 10.64 27.59 -16.95 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 - 29 1.0 <0.50 <0.50 <250 <br />MW-12 05/16/07 10.64 27.38 -16.74 <50 <0.50 0.51 <0.50 0.86 15 <10 <0.50 20 <0.50 <0.50 <0.50 <250 <br />MW-12 08/01/07 10.64 27.99 -17.35 <50 <0.50 <0.50 <0.50 <0.50 13 <10 <0.50 12 <0.50 <0.50 <0.50 <250 <br />MW-12 11/19/07 10.64 28.91 -18.27 66 <0.50 <0.50 <0.50 <0.50 12 <10 <0.50 11 <0.50 <0.50 <0.50 <250 <br />MW-12 01/22/08 10.68 28.11 -17.43 62 <0.50 <0.50 0.59 <1.0 33 19 <0.50 18 <0.50 <0.50 <0.50 <250 <br />MW-12 04/07/08 10.68 27.05 -16.37 53 <0.50 <0.50 <0.50 <1.0 41 <10 <0.50 37 0.64 <0.50 <0.50 <250 <br />MW-12 07/21/08 10.68 28.34 -17.66 61 <0.50 <0.50 <0.50 <1.0 37 <10 <0.50 31 0.57 <0.50 <0.50 <250 <br />MW-12 10/20/08 10.68 29.81 -19.13 54 <0.50 <0.50 <0.50 <1.0 26 <10 <0.50 36 <0.50 <0.50 <0.50 <250 <br />MW-12 01/19/09 10.68 30.18 -19.50 60 <0.50 <0.50 <0.50 <1.0 64 <10 <0.50 34 <0.50 <0.50 <0.50 <250 <br />MW-12 04/20/09 10.68 29.48 -18.80 64 0.56 0.82 <0.50 <1.0 38 <10 <0.50 36 <0.50 <0.50 <0.50 <250 <br />MW-12 07/20/09 10.68 30.49 -19.81 <50 1.0 0.73 0.69 2.5 30 <10 <0.50 29 <0.50 <0.50 <0.50 <250 <br />MW-12 01/04/10 10.68 31.19 -20.51 <50 <0.50 <0.50 <0.50 <1.0 0.74 <10 <0.50 6.1 <0.50 <0.50 <0.50 <250 <br />MW-12 07/19/10 10.68 28.53 -17.85 93 <0.50 <0.50 <0.50 <1.0 78 <10 <0.50 38 <0.50 <0.50 <0.50 <250 <br />MW-12 01/05/11 10.68 28.63 -17.95 <50 <0.50 <0.50 <0.50 1.1 0.63 <10 <0.50 20 <0.50 <0.50 <0.50 <250 <br />MW-12 08/02/11 10.68 26.38 -15.70 95 0.56 <0.50 <0.50 <1.0 59 <10 <0.50 32 <0.50 <0.50 <0.50 <250 <br />MW-12 03/27/12 10.68 25.37 -14.69 <50 <0.50 <0.50 <0.50 <1.0 1.1 <10 <0.50 1.4 <0.50 <0.50 <0.50 <250 <br />MW-12 09/04/12 10.68 25.92 -15.24 <50 <0.50 <0.50 <0.50 <1.0 7.3 <10 <0.50 2.8 <0.50 <0.50 <0.50 <250 <br />MW-12 02/25/13 10.68 24.65 -13.97 <50 <0.50 <0.50 <0.50 <1.0 28 <10 <0.50 9.2 <0.50 <0.50 <0.50 <250 <br />MW-12 08/13/13 10.68 25.70 -15.02 <50 <0.50 <0.50 <0.50 <1.0 24 15 <0.50 7.8 <0.50 <0.50 <0.50 <250 <br />MW-12 02/07/14 10.68 26.05 -15.37 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 1.7 <0.50 <0.50 <0.50 <250 <br />MW-12 09/24/14 10.68 27.74 -17.06 <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-12 03/18/15 10.68 28.17 -17.49 <50 <0.50 <0.50 <0.50 <1.0 <050 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-12 08/28/15 10.68 29.98 -19.30 <50 <0.50 <0.50 <0.50 <1.0 1.9 <10 <0.50 4.0 <0.50 <0.50 <0.50 <250 <br />MW-12 03/30/16 10.68 29.36 -18.68 <50 <0.50 <0.50 <0.50 <1.0 5.7 <10 <0.50 4.1 <0.50 <0.50 <0.50 <250 <br />MW-12 08/29/16 10.68 29.44 -18.76 <50 <0.50 <0.50 <0.50 <1.0 7.2 <10 <0.50 4.8 <0.50 <0.50 <0.50 <250 <br />MW-12 03/10/17 10.68 25.55 -14.87 <50 <0.50 <0.50 <0.50 <1.0 3.0 <10 <0.50 5.2 <0.50 <0.50 <0.50 <250 <br />MW-12 08/11/17 10.68 23.19 -12.51 170 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 4.2 <0.50 <0.50 <0.50 <250 <br />MW-12 02/28/18 10.68 22.26 -11.58 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 1.6 <0.50 <0.50 <0.50 <250 <br />MW-12 08/31/18 10.68 21.40 -10.72 <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-12 03/01/19 10.68 19.83 -9.15 <50 <0.50 <0.50 <0.50 <1.0 0.58 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-12 09/05/19 10.68 18.99 -8.31 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 0.28.1 <0.50 <0.50 <0.50 <250 <br />MW-12 02/28/20 10.68 17.35 -6.67 <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-13 07/28/03 - 32.27 - <50 <0.50 <0.50 <0.50 <1.0 <2.0 <100 <2.0 37 <2.0 <2.0 <2.0 <500 <br />MW-13 10/08/03 10.60 33.43 -22.83 <50 <0.50 <0.50 <0.50 <1.0 <2.0 <100 <2.0 35 <2.0 <2.0 <2.0 <500 <br />MW-13 01/12/04 10.60 32.75 -22.16 110 <0.50 8.4 4.3 12 <2.0 <100 <2.0 21 <2.0 <2.0 <2.0 <500 <br />MW-13 04/26/04 10.60 31.21 -20.61 100 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 19 <1.0 <0.50 <0.50 <50 <br />MW-13 07/13/04 10.60 32.61 -22.01 62 <0.50 <0.50 2.1 4.0 <0.50 <5.0 <0.50 20 <1.0 <0.50 <0.50 <50 <br />MW-13 10/26/04 10.60 34.61 -24.01 51 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 22 <1.0 <0.50 <0.50 <50 <br />MW-13 01/12/05 10.60 33.86 -23.26 77 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 18 <1.0 <0.50 <0.50 <50 <br />MW-13 04/12/05 10.60 31.36 -20.76 71 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 16 <0.50 <0.50 <0.50 <50 <br />GHD 11193145 (5)