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Page 14 of 25 <br />Table 1 <br />Historical Groundwater Gauging and Analytical Results <br />Union Oil Company of California <br />Former 76 Station No. 44091 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 />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-10 04/20/09 11.29 30.11 -18.82 6,000 <10 <10 <10 <20 6,500 6,600 <10 <10 <10 <10 <10 <5,000 <br />MW-10 07/20/09 11.29 31.20 -19.91 6,400 <25 <25 <25 <50 4,600 5,000 <25 <25 <25 <25 <25 <12000 <br />MW-10 01/04/10 11.29 31.81 -20.52 5,600 <5.0 <5.0 11 <10 4,400 4,600 <5.0 <5.0 <5.0 <5.0 <5.0 <2500 <br />MW-10 07/19/10 11.29 29.20 -17.91 5,300 <0.50 <0.50 47 6.9 2,800 3,400 <0.50 <0.50 <0.50 <0.50 3.4 <250 <br />MW-10 01/05/11 11.29 29.20 -17.91 100 <0.50 <0.50 1.1 <1.0 18 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 08/02/11 11.29 27.01 -15.72 74 <0.50 <0.50 0.88 <1.0 5.7 15 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 03/27/12 11.29 25.97 -14.68 <50 <0.50 <0.50 <0.50 <1.0 4.0 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 09/04/12 11.29 26.65 -15.36 1,700 <0.50 <0.50 71 7.8 260 910 <0.50 0.90 <0.50 <0.50 <0.50 <250 <br />MW-10 02/25/13 11.29 25.35 -14.06 1,200 <0.50 <0.50 32 2.0 77 1,200 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 08/13/13 11.29 26.35 -15.06 2,000 <0.50 <0.50 40 7.3 59 980 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 02/07/14 11.29 26.71 -15.42 1,300 <0.50 <0.50 2.4 6.0 60 700 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 09/24/14 11.29 28.42 -17.13 3,700 <0.50 <0.50 61 29 67 570 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 03/18/15 11.29 28.85 -17.56 4,100 <0.50 0.65 78 50 39 160 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 08/28/15 11.29 30.69 -19.40 4,900 <0.50 <0.50 72 52 66 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 03/30/16 11.29 29.96 -18.67 6,100 c <0.50 0.91 130 c 61 87 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 08129/16 11.29 30.03 -18.74 6,200 <0.50 0.88 120 36 66 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 10/29/16 11.29 30.49 -19.20 - - - - - - - - - - - - <br />MW-10 03/10/17 11.29 26.12 -14.83 4,700 <0.50 0.66 100 22 44 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 08/11/17 11.29 23.90 -12.61 7,600 <0.50 0.69 58 28 37 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 02/28/18 11.29 22.90 -11.61 5,900 <1.0 <1.0 49 19 36 <20 <1.0 <1.0 <1.0 <1.0 <1.0 <500 <br />MW-10 08/31/18 11.29 22.14 -10.85 300 <0.50 <0.50 <0.50 <1.0 0.94 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 03/01/19 11.29 20.56 -9.27 1,100 <0.50 <0.50 3.6 11 24 110 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-10 09/05/19 11.29 18.72 -7.43 <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-10 02/28/20 11.29 18.11 -6.82 690 <0.50 0.24J 0.78 1.7 6.1 26 <0.50 <0.50 <0.50 <0.50 <0.50 <250 <br />MW-11 07/28/03 - 33.39 - <50 <0.50 <0.50 <0.50 <1.0 <2.0 <100 <2.0 26 <2.0 <2.0 <2.0 <500 <br />MW-11 10/08/03 12.40 35.62 -23.22 <50 <0.50 <0.50 <0.50 <1.0 <2.0 <100 <2.0 26 <2.0 <2.0 <2.0 <500 <br />MW-11 01/12/04 12.40 35.24 -22.84 61 1.1 2.6 1.2 4.7 <2.0 <100 <2.0 24 <2.0 <2.0 <2.0 <500 <br />MW-11 04/26/04 12.40 33.70 -21.30 62 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 24 <1.0 <0.50 <0.50 <50 <br />MW-11 07/13/04 12.40 34.87 -22.47 <50 <0.50 <0.50 <0.50 1.1 <0.50 <5.0 <0.50 27 <1.0 <0.50 <0.50 <50 <br />MW-11 10/26/04 12.40 37.06 -24.66 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 28 <1.0 <0.50 <0.50 <50 <br />MW-11 01/12/05 12.40 36.40 -24.00 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 29 <1.0 <0.50 <0.50 <50 <br />MW-11 04/12/05 12.40 33.97 -21.57 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 7.3 <0.50 <0.50 <0.50 <50 <br />MW-11 07/12/05 12.40 32.88 -20.48 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 8.5 <0.50 <0.50 <0.50 <50 <br />MW-l1 10/06/05 12.40 34.54 -22.14 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <5.0 <0.50 13 <0.50 <0.50 <0.50 <50 <br />MW-11 01/12/06 12.40 33.54 -21.14 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 - 3.4 <0.50 <0.50 <0.50 <250 <br />MW-I1 04/12/06 12.40 31.40 -19.00 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 5.3 <0.50 <0.50 <0.50 <250 <br />MW-11 07/10/06 12.40 29.55 -17.15 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 5.9 <0.50 <0.50 <0.50 <250 <br />MW-11 10/18/06 12.40 30.73 -18.33 <50 <0.50 <0.50 <0.50 <1.0 <0.50 <10 6.4 <0.50 <0.50 <0.50 <250 <br />MW-11 03/12/07 12.40 29.85 -17.45 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 - 22 <0.50 <0.50 <0.50 <250 <br />MW-11 05/15/07 12.40 29.60 -17.20 <50 <0.50 0.62 <0.50 0.98 0.70 <10 <0.50 20 <0.50 <0.50 <0.50 <250 <br />MW-11 08/01/07 12.40 30.30 -17.90 <50 <0.50 <0.50 <0.50 <0.50 0.59 <10 <0.50 18 <0.50 <0.50 <0.50 <250 <br />MW-11 11/19/07 12.40 30.82 -18.42 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 16 <0.50 <0.50 <0.50 <250 <br />GHD 11193145 (5)