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Table 1 Groundwater Elevation and Analytical Data(CHEVRON) Chevron Service Station S 9-4275 2905 West Benjamin Holl Drive ) Stockton,California Well Depth Groundwater Ethyl- Total Well Date Elevation to Water Elevation TPH9 Benzene Toluene benzene Xylenes MtBE ID Sampled Notes (ft,MSL) (ft,TOC) (ft,MSL} (NgIL) (jig/l.) (pgIL) (pg1L) (poll-) (pglL) MW-4 08!17103 10.29 -7.48 <50 <0.5 <0.5 <0.5 <0.5 <2 (cant.) 09!24103 12.02 -9.21 <60 <0.5 <0.5 <0.5 <0.5 2 12!18103 11,77 -6.96 <50 <0.5 <0.5 <0.5 <0.5 8 03/23/04 9.55 -6.74 53 <0.5 <0.5 <0.5 <0.5 7 06!22/04 11.38 -8.57 <50 <0.5 <0.5 <0.5 <0.5 6 09!21104 12.50 -9.69 <50 <0.5 <0.5 <0.5 a0.5 3 12728104 11.20 -8.39 <50 <0.5 <0.5 <0.5 <0.5 5 03!07705 8.64 -5.83 92 <0.5 <0.5 <0.5 <0.5 8 06130!05 Monitoring well destroyed MW-5 03122!89 3.79 17.16 -13.39 4,000 35 23 110 760 06112189 17.80 -14.01 900 24 2.0 2.0 53 09107/89 19.11 -15.32 410 16 4.0 12 50 09/07/89 D -- -- 380 15 4.0 11 49 12718189 18.63 -14.84 2,900 24 22 100 590 03720190 18.19 •14.40 3,400 37 29 120 630 - 07/03190 19.43 -15.64 5,500 65 89 200 1,200 10!19190 20.04 -18.25 5,900 55 82 190 1,100 -- 01/17791 19.98 -16.19 4,900 26 51 140 830 -- 03119/91 -- -- 6,800 18 24 21 790 -- 07118/91 19.72 -15.93 7,600 60 65 190 800 10131/91 20.20 -16.41 2,6D0 44 24 64 310 01116792 19.60 -15.81 5,400 120 72 250 1,000 01116792 D -- 4,700 110 63 230 960 03711/92 18,64 -14.85 -- -- -- -- � � 03!17!92 18.53 -14.74 1,100 37 13 52 170 - 06129!92 20.18 -16.39 850 18 9.0 25 200 12110/92 20.76 -16.99 1,200 49 16 64 200 02/04193 19.02 -15.23 1,200 31 12 58 250 - 05118193 16.74 -12.95 2,000 58 10 170 190 -- 08105193 17.55 -13.76 750 32 4.6 50 too - 11f09193 16.28 -14.49 1,400 29 3.8 46 190 -- 01/18794 17.77 -13.98 1,200 31 4.8 75 180 06/27194 17.19 -13.40 150 6.2 ND 0.6 19 01/18/94 18.47 -14.68 1,400 29 3.0 40 160 01118/94 18.16 -14.37 1,000 19 3.7 28 130 03108/95 16.12 •12.33 750 22 0.7 30 60 06101/95 14.47 -10.68 3,600 110 13 240 390 09111!95 16.19 -12.40 890 40 3.B 76 140 -- 12105l95 16.60 -13,D1 410 6.7 <0.5 11 43 - 03118!96 13,30 -9.51 740 10 <0.5 38 66 -- 06118l96 12.96 -9.17 7,2D0 86 6.7 770 540 15 09/24196 14.79 -11.00 12,000 74 5.0 760 1,100 59 12104!96 14.62 -10.83 1,100 8.3 1.0 93 63 <5.0 02725197 10.42 -6.63 24,000 570 1,400 1,500 5,300 <50 05106797 11.25 -7.46 38,000 580 790 3,000 12,000 <120 09/29797 14.09 -10.30 15,000 300 <12 1,500 1,000 <120 11/25197 14.14 -10.35 8,300 280 <50 770 450 <250 03726!98 7.135 -4.06 <50 <0.5 <0.5 <0.5 <0.5 <2.5 06724798 9.56 -5.77 <50 <0.5 <0.5 D.64 <0.5 100 0911D/98 11.58 -7.79 100 3.6 1.5 10 5.8 4.7 12117/98 11.40 -7.61 52 1.2 <0.5 3.9 2.3 680 03110!99 9.69 -5.90 <50 <0.5 <0.5 0.61 <0.5 19 06122199 10.15 -6.36 <50 <0.5 <0.5 <0.5 <0.5 <2.0 I:1Chavronl942755Tablesl94275-QMR.xl5 6 of 13