ARCHIVED REPORTS XR0010019 - Laserfiche WebLink

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[ Table 1 Groundwater Elevation and Analytical Data ARCO Service Station No. 2130 7906 N. EL Dorado Street, Stockton, CA TOC Depth to Water Level Ethyl- Total Well Date P1 Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) WL] (pglL) (pg/L) (pg/L) (erg/L) (U91L) (mg/L) Comments MW-3 06/11/2003 P 16.10 39.81 -23.71 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 3.18 09/23/2003 P 16.10 43.78 -27.68 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 12/09/2003 P 16.10 42.70 -26.60 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] -- 03/09/2004 P 16.10 40.38 -24.28 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 1.21 06/23/2004 P 16.10 45.37 -29.27 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 2.06 09/20/2004 P 16.10 49.60 -33.50 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 2.21 12/20/2004 P 16.10 45.89 -29.79 <50 -- <0.50 <0.50 <0.50 <0.50 2.2[2] 4.45 03/28/2005 P 16.10 42.82 -26.72 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] 4.20 06/19/2005 P 16.10 43.22 -27.12 <50 -- 0.84 J 0.69 <0.50 0.82 <0.50[2] 3.0 0911112005 P 16.10 47.75 -31.65 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 3.40 MW-4 8/10/1992 - 14.57 64.34 49.77 NA - NA NA NA NA NA - No FP,No S 8/28/1992 - -- - -- 1,200 - 310 270 23 140 NA - No FP,No S 9/15/1992 - 14.57 64.45 49.88 NA -- NA NA NA NA NA -- No FP,No S 1016/1992 - 14.57 64.60 50.03 260 -- 26 3.5 <0.5 22 NA -- No FP,No S 11/11/1992 - 14.57 63.87 49.40 NA - NA NA NA NA NA - No FP,No S 12/4/1992 -- 14.57 63.12 48.55 NA - NA NA NA NA NA -- No FP,No S 1/20/1993 - 14.57 61.83 47.26 820 - 160 6.9 <5* 71 NA -- No FP,No S 3/22/1993 - 14.57 59.95 45.38 NA - NA NA NA NA NA - No FP,No S 4/6/1993 -- 14.57 59.44 44.87 1,000 -- 250 26 <2.5 120 NA -- No FP,No S 7/30/1993 - 14.57 60.23 45.66 880 - 220 50 4.5 68 NA -- No FP,No S 11/29/1993 -- 14.57 -- -- - - - -- -- - - -- Well Inaccessible,No FP, No S 3/23/1994 -- 14.57 54.29 39.72 580 -- 97 17 4.3 29 NA -- No FP,No S 6/22/1994 - 14.57 54.41 39.84 1,700 - 930 4.4 52 20 NA No FP,No S 9/28/1994 -- 14.57 58.26 43.69 610 - 73 2.2 1.3 1.8 NA - No FP,No S 12/1/1994 - 14.57 57.18 42.61 1,000 -- 400 31 59 15 NA - No FP,No S 2/28/1995 - 14.57 54.27 -39.70 <50 - 0.9 <0.5 <0.5 <0.5 NA - No FP,No S 5/19/1995 -- 14.57 52.38 -37.81 <50 -- I <0.5 <0.5 <0.5 <0.5 NA - No FP,No S 8/28/1995 -- 14.57 54.10 -39.53 <50 -- <0.5 <0.5 <0.5 <0.5 NA - No FP,No S 12/7/1995 -- 14.57 52,69 -38.12 <50 <0.5 <0.5 <0.5 <0.5 NA -- No FP, No S 2/5/1996 - 14.57 50.12 -35.55 <50 -- <0.5 <0.5 <0.5 50.5 NA No FP,No S 5/30/1996 -- 14.57 47.21 -32.64 <50 - <0.5 <0.5 <0.5 <0.5 <3 - No FP,No S 9/18/1996 - 14.57 51.80 -37.23 <50 - <0.5 <0.5 <0.5 <0.5 <3 - No FP,No S Report Date.October 21,2005 Page 9 of 24