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Page 17 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. amsl) <br />DTW <br />(ft) <br />GWE <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 />(pg1L) <br />EDB <br />(pg/L) <br />1,2-DCA <br />(pg/L) <br />DI P E <br />(pg/L) <br />ETBE <br />(pg/L) <br />TAME <br />(pg/L) <br />Ethanol Comments <br />(pg/L) <br />MW-13 07/12/05 10.60 30.49 -19.89 61 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 14 <0.50 <0.50 <0.50 <50 <br />MW-13 10/06/05 10.60 32.24 -21.64 260 <0.50 <0.50 2.5 4.2 1.1 <5.0 <0.50 12 <0.50 <0.50 <0.50 <50 <br />MW-13 01/12/06 10.60 31.05 -20.45 <50 <0.50 <0.50 <0.50 <1.0 0.67 <10 - 11 <0.50 <0.50 <0.50 <250 <br />MW-13 04/12/06 10.60 28.83 -18.23 66 <0.50 <0.50 <0.50 <1.0 0.6 <10 - 13 <0.50 <0.50 <0.50 <250 <br />MW-13 07/10/06 10.60 27.13 -16.53 97 <0.50 <0.50 <0.50 <1.0 <0.50 <10 - 12 <0.50 <0.50 <0.50 <250 <br />MW-13 10/18/06 10.60 28.39 -17.79 62 <0.50 <0.50 <0.50 <1.0 <0.50 <10 - 10 <0.50 <0.50 <0.50 <250 <br />MW-13 03/12/07 10.60 27.55 -16.95 140 <0.50 <0.50 <0.50 <0.50 0.56 <10 - 15 <0.50 <0.50 <0.50 <250 <br />MW-13 05/15/07 10.60 27.34 -16.74 200 <0.50 0.63 <0.50 0.95 <0.50 <10 <0.50 14 <0.50 <0.50 <0.50 <250 <br />MW-13 08/01/07 10.60 28.07 -17.47 120 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 13 <0.50 <0.50 <0.50 <250 <br />MW-13 11/19/07 10.60 28.81 -18.21 86 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 10 <0.50 <0.50 <0.50 <250 <br />MW-13 01/22/08 10.64 28.02 -17.38 100 <0.50 <0.50 <0.50 <1.0 4.1 <10 <0.50 14 <0.50 <0.50 <0.50 <250 <br />MW-13 04/07/08 10.64 26.98 -16.34 83 b <0.50 <0.50 <0.50 <1.0 0.56 <10 <0.50 11 <0.50 <0.50 <0.50 <250 <br />MW-13 07/21/08 10.64 28.44 -17.80 64 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 8.6 <0.50 <0.50 <0.50 <250 <br />MW-13 10/20/08 10.64 29.90 -19.26 220 <0.50 <0.50 <0.50 <1.0 1.6 <10 <0.50 14 <0.50 <0.50 <0.50 <250 <br />MW-13 01/19/09 10.64 30.22 -19.58 190 <0.50 <0.50 <0.50 <1.0 1.2 <10 <0.50 12 <0.50 <0.50 <0.50 <250 <br />MW-13 04/20/09 10.64 29.51 -18.87 220 0.83 1.0 <0.50 1.2 1.3 <10 <0.50 14 <0.50 <0.50 <0.50 <250 <br />MW-13 07/20/09 10.64 30.64 -20.00 160 <0.50 <0.50 <0.50 <1.0 1.4 <10 <0.50 14 <0.50 <0.50 <0.50 <250 <br />MW-13 01/04/10 10.64 31.26 -20.62 260 <0.50 <0.50 <0.50 <1.0 1.2 <10 <0.50 12 <0.50 <0.50 <0.50 <250 <br />MW-13 07/19/10 10.64 28.57 -17.93 340 <0.50 <0.50 <0.50 <1.0 1.3 <10 <0.50 9.9 <0.50 <0.50 <0.50 <250 <br />MW-13 01/05/11 10.64 28.60 -17.96 340 <0.50 <0.50 <0.50 <1.0 1.1 <10 <0.50 9.9 <0.50 <0.50 <0.50 <250 <br />MW-13 08/02/11 10.64 26.38 -15.74 360 <0.50 <0.50 <0.50 <1.0 1.6 <10 <0.50 12 <0.50 <0.50 <0.50 <250 <br />MW-13 03/27/12 10.64 25.38 -14.74 290 <0.50 <0.50 <0.50 <1.0 0.61 <10 <0.50 7.6 <0.50 <0.50 <0.50 <250 <br />MW-13 09/04/12 10.64 26.00 -15.36 300 <0.50 <0.50 <0.50 <1.0 1.1 <10 <0.50 11 <0.50 <0.50 <0.50 <250 <br />MW-13 02/25/13 10.64 24.73 -14.09 310 <0.50 <0.50 <0.50 <1.0 0.84 <10 11 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-13 08/13/13 10.64 25.70 -15.06 350 <0.50 <0.50 <0.50 <1.0 0.84 <10 <0.50 9.5 <0.50 <0.50 <0.50 <250 <br />MW-13 02/07/14 10.64 26.10 -15.46 370 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 9.0 <0.50 <0.50 <0.50 <250 <br />MW-13 09/24/14 10.64 27.84 -17.20 390 <0.50 <0.50 <0.50 <1.0 0.66 <10 <0.50 6.9 <0.50 <0.50 <0.50 <250 <br />MW-13 03/18/15 10.64 28.23 -17.59 190 <0.50 <0.50 <0.50 <1.0 0.81 <10 <0.50 7.2 <0.50 <0.50 <0.50 <250 <br />MW-13 08/28/15 10.64 30.12 -19.48 200 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 8.0 <0.50 <0.50 <0.50 <250 <br />MW-13 03/30/16 10.64 29.33 -18.69 320 <0.50 <0.50 <0.50 <1.0 0.66 <10 <0.50 6.9 <0.50 <0.50 <0.50 <250 <br />MW-13 08/29/16 10.64 29.50 -18.86 250 <0.50 <0.50 <0.50 <1.0 0.76 <10 <0.50 6.3 <0.50 <0.50 <0.50 <250 <br />MW-13 10/29/16 10.64 31.16 -20.52 - - - - - - - - - - - - - <br />MW-13 03/10/17 10.64 25.50 -14.86 230 <0.50 <0.50 <0.50 <1.0 0.64 <10 <0.50 6.4 <0.50 <0.50 <0.50 <250 <br />MW-13 08/11/17 10.64 23.30 -12.66 530 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 6.4 <0.50 <0.50 <0.50 <250 <br />MW-13 02/28/18 10.64 22.27 -11.63 670 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 4.6 <0.50 <0.50 <0.50 <250 <br />MW-13 08/31/18 10.64 21.58 -10.94 370 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 4.1 <0.50 <0.50 <0.50 <250 <br />MW-13 03/01/19 10.64 19.90 -9.26 430 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 3.8 <0.50 <0.50 <0.50 <250 <br />MW-13 09/05/19 10.64 18.17 -7.53 350 <0.50 <0.50 0.10 J <1.0 0.21 J <10 <0.50 4.1 <0.50 <0.50 <0.50 <250 <br />MW-13 02/28/20 10.64 17.51 -6.87 210 <0.50 <0.50 <0.50 <1.0 0.16J <10 <0.50 3.3 <0.50 <0.50 <0.50 <250 <br />MW-14 07/28/03 - 33.26 - <50 <0.50 <0.50 <0.50 <1.0 <2.0 <100 <2.0 <2.0 <2.0 <2.0 <2.0 <500 <br />MW-14 10/08/03 12.11 35.23 -23.12 <50 <0.50 <0.50 <0.50 <1.0 <2.0 <100 <2.0 3.2 <2.0 <2.0 <2.0 <500 <br />MW-14 01/12/04 12.11 34.72 -22.61 <50 0.60 1.7 0.77 3.2 <2.0 <100 <2.0 3.8 <2.0 <2.0 <2.0 <500 <br />GHD 11193145(5)