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Page 21 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 />(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-17 08/19/05 11.51 32.45 -20.94 13,000 700 1,300 370 1,900 <10 <100 <10 <10 <10 <10 <10 <1,000 <br />MW-17 10/06/05 12.38 34.02 -21.64 3,400 190 24 0.55 320 <0.50 <5.0 <0.50 3.5 <0.50 <0.50 <0.50 <50 <br />MW-17 01/12/06 12.38 31.41 -19.03 120 1.8 <0.50 <0.50 <1.0 <0.50 <10 - 2.9 <0.50 <0.50 <0.50 <250 <br />MW-17 04/12/06 12.38 29.13 -16.75 61 1.0 <0.50 <0.50 <1.0 <0.50 <10 - 1.1 <0.50 <0.50 <0.50 <250 <br />MW-17 07/10/06 12.38 29.13 -16.75 <100 <1,0 <1.0 <1.0 <2.0 <1.0 <20 - <1.0 <1.0 <1.0 <1.0 <500 <br />MW-17 10/18/06 12.38 29.25 -16.87 <100 0.94 <1.0 <1.0 0.6 <1.0 <20 - 0.87 <1.0 <1.0 <1.0 <500 <br />MW-17 03/12/07 12.38 28.15 -15.77 <50 0.72 <0.50 <0.50 1.2 <0.50 <10 - 0.87 <0.50 <0.50 <0.50 <250 <br />MW-17 05/15/07 12.38 28.07 -15.69 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 0.66 <0.50 <0.50 <0.50 <250 <br />MW-17 08/01/07 12.38 28.92 -16.54 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 0.67 <0.50 <0.50 <0.50 <250 <br />MW-17 11/19/07 12.38 29.62 -17.24 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-17 01/22/08 11.54 28.80 -17.26 <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-17 04/07/08 11.54 27.75 -16.21 <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-17 07/21/08 11.54 29.25 -17.71 - <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-17 10/20/08 11.54 29.57 -18.03 <50 0.74 <0.50 <0.50 <1.0 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-17 01/19/09 11.54 30.89 -19.35 <50 0.74 <0.50 <0.50 <1.0 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-17 04/20/09 11.54 30.15 -18.61 <50 1.6 <0.50 0.61 <1.0 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-17 07/20/09 11.54 31.37 -19.83 <50 1.2 <0.50 <0.50 <1.0 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-17 01/04/10 11.54 31.74 -20.20 <50 0.88 <0.50 <0.50 <1.0 <0.60 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-17 07/19/10 11.54 29.38 -17.84 - - - - - - - - - - - - - <br />MW-17 01/05/11 11.54 29.17 -17.63 <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-17 08/02/11 11.54 27.12 -15.58 - - - - - - - - - - - - - <br />MW-17 03/27/12 11.54 26.05 -14.51 <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-17 09/04/12 11.54 26.78 -15.24 - - - - - - - - - - - - - <br />MW-17 02/25/13 11.54 25.52 -13.98 <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-17 08/13/13 11.54 26.51 -14.97 - - - - - - - - - - - - - <br />MW-17 02/07/14 11.54 26.76 -15.22 60 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 3.0 <0.50 <0.50 <0.50 <250 <br />MW-17 09/24/14 11.54 28.61 -17.07 - - - - - - - - - - - - - <br />MW-17 03/18/15 11.54 28.89 -17.35 71 <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 3.4 <0.50 <0.50 <0.50 <250 <br />MW-17 08/28/15 11.54 30.78 -19.24 - - - - - - - - - - - - - <br />MW-17 03/30/16 11.54 29.78 -18.24 - <0.50 <0.50 <0.50 <1.0 <0.50 <10 <0.50 2.9 <0.50 <0.50 <0.50 <250 <br />MW-17 08/29/16 11.54 30.15 -18.61 - - - - - - - - - - - - - <br />MW-17 03/10/17 11.54 25.91 -14.37 <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-17 08/11/17 11.54 24.06 -12.52 - - - - - - - - - - - - - <br />MW-17 02/28/18 11.54 23.00 -11.46 <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-17 08/31/18 11.54 22.42 -10.88 - - - - - - - - - - - - - <br />MW-17 03/01/19 11.54 20.43 -8.89 <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-17 09/05/19 11.54 18.95 -7.41 - - - - - - - - - - - - - <br />MW-17 02/28/20 11.54 18.42 -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-18 01/24/08 11.34 28.60 -17.26 20,000 <5.0 <5.0 210 200 6,900 3,300 <5.0 <5.0 <5.0 <5.0 <5.0 <2,500 <br />MW-18 04/07/08 11.34 27.64 -16.30 7,900 <0.50 <0.50 50 47 5,700 570 <0.50 3.7 <0.50 <0.50 71 <250 <br />MW-18 07/21/08 11.34 29.02 -17.68 5,000 <10 <10 <10 <20 4,500 ‘200 <10 <10 <10 <10 <10 <5000 <br />MW-18 10/20/08 11.34 30.49 -19.15 4,400 <5.0 <5.0 6.5 <10 4,200 580 <5.0 <5.0 <5.0 <5.0 <5.0 <2500 <br />GHD 11193145 (5)