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Table 1 Groundwater Elevation and Analytical Data(CHEVRON) Chevron Service Station i19-4275 2905 West Benjamin Drive Stockton.California Well Depth Groundwater Ethyl- Total Well Date Elevation to Water Elevation TPHg Benzene Toluene benzene Xylenes MtBE ID Sampled Notes (fl MSL) (ft,TOC) (ft,MSL) (Ng1L) (pglL) (yg1L) (NglL) (pglL) (pglL) MW-2 02125197 10.07 -6.66 9,100 330 5.0 700 680 220 (cont.) 09!29197 13.82 -10.41 5,800 120 <2.5 470 170 28 11125197 13.77 -10.36 4,600 100 425 330 130 <125 03126196 7.30 -3.89 7,000 150 4.8 720 410 <12 06124/98 9.18 -5.77 16,000 460 <20 1,400 1,700 380 09110!98 11.20 -7.79 3,100 60 13 140 38 <12 12117!98 11.14 -7.73 1,000 15 <1.0 42 30 10 03!10!99 9.31 -5.90 9,700 220 <20 870 400 200 06/22/99 11.11 -7.70 9,370 186 <1.0 891 683 50.5 09/13199 12.44 -9.03 1,600 12 <2.5 31 33 32 12!16!99 12.40 -8.99 804 4.27 2.85 27.1 41.6 6.43 03/01100 8.00 -4.59 1,570 16.2 <1.0 33 6.2 362 06113!00 2 9.76 -6.37 1,770 47.3 <2.50 187 31.9 123 < 09113100 ' 11.75 -8.34 50.0 <0.500 <0.500 <0.500 <0.500 8.20 12114100 5 11.33 -7.92 87.0 0.753 <0.500 <0.500 <1.50 14.5 03102101 S,2,9 9.78 -6,37 1,400 25 <5.0 17 <5.0 380!410 03102101 K,9 9.78 -6.37 1,800 10 <0.50 16 2.8 380 05110101 9.32 -5.91 2,100 13 0.63 24 3.4 210 06/21/01 12.12 -8.71 170 <0.50 <0.50 <0.50 0.81 16 12105!01 11.70 -8.29 75 <0.5 <0.5 <0.5 0.8 4.0 03!11102 9.58 -6.17 2,600 B <0.5 11 7 240 06!07!02 10,39 -6.98 1,700 5 <0.5 3 4 130 09!24102 12.53 -9.12 170 <0.5 <0.5 <0.5 <0.5 7 12/17102 11.59 -8.18 140 <0.5 <0.5 3 5 11 03/18103 10.56 -7.15 1,700 2 <0.5 6 11 110 . 06!17103 10.89 -7.48 1,300 2 <0.5 7 10 74 09/24/03 12.63 -9.22 120 0.6 <0.5 2 2 6 12118103 12.23 .8.82 510 2 <0.5 17 29 11 03/23104 10.05 -6.64 2100 6 <0.5 6 10 150 06!22104 11.98 -6.57 1,300 4 <0,5 4 5 15D 09121104 13.07 -9.66 1,500 2 <0.5 20 28 38 12!28104 11.89 -8.48 220 <0.5 <0.5 <0.5 c0.5 39 03!07!05 9.01 -5.60 2,100 3 <0.5 13 5 300 06130105 Monitoring well destroyed MW-2R 03!20106 10 6.26 -- 530 <0.5 c0.5 <0.5 <0.5 26 MW-3 03122!89 2.40 16 51 -14.11 NO NO NO NO NO -- 0612189 17.19 -14.79 NO NO NO NO NO 09107189 18.64 -16.24 NO NO NO NO NO - 12118189 17.78 -15.38 NO NO NO NO NO 03/20190 17.55 -15.15 NO NO NO NO NO •- 07103190 18.71 -16.31 NO NO NO NO NO -- 10/19190 19.63 -17.23 ND NO NO NO NO -- 01117/91 19.34 -16.94 70 NO NO NO NO 03!19191 - NO NO NO NO NO 07/18/91 19.48 -17.08 NO ND ND NO NO 10!31!91 19.86 -17.46 NO NO ND ND NO _ 01/16/92 19.05 -16.65 ND NO ND ND 0.9 » 03/11/92 17.95 -15.55 -- - - 03I17192 17.90 -15.50 ND 0.7 1.1 NO 0.8 - 06129192 19.45 -17.05 NO 0.9 NO NO NO 12110192 20.07 -17.67 NO NO ND ND 0.5 02104193 18.01 -15.61 NO ND ND NO ND .. 05/18193 16.14 -13.74 ND NO 0.8 0.7 3.7 • 1:5Chevron%942755Tables594275_QMR.xls 30113