ARCHIVED REPORTS XR0010019 - Laserfiche WebLink

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r 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 P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (mglL) Comments MW-2 12/18/2002 -- 15.19 41.94 -26.75 <50 - <0.50 <0.50 <0.50 <0.50 2.5[2] - 03/06/2003 P 15.19 39.55 -24.36 <50 <0.50 <0.50 <0.50 <0.50 0.60[2] 1.96 06/11/2003 P 15.19 38.99 -23.80 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] 2.66 09/23/2003 P 15.19 42.97 -27.78 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2] -- 12/09/2003 P 15.19 41.99 -26.80 <50 -- <0.50 <0.50 <0.50 <0.50 <0.50[2] - 03/09/2004 P 15.19 39.59 -24.40 <50 - <0.50 <0.50 <0.50 <0.50 <0.50[2) 2.44 06/23/2004 P 15.19 44.44 -29.25 <50 -- 0.63 <0.50 <0.50 <0.50 <0.50[2] 1.74 09/20/2004 P 15.19 48.69 -33.50 <50 - <2.5 <2.5 <2.5 <2.5 <2.5[2] -- 12/20/2004 P 15.19 45.01 -29.82 <50 - <0.50 <0.50 <0.50 <0.50 0.60[2] 4.32 03/28/2005 P 15.19 42.05 -26.86 84 - <0.50 <0.50 <0.50 <0.50 0.65[2] 4.60 06/19/2005 P 15.19 42.37 -27.18 <50 - <0.50 <0.50 <0.50 <0.50 1.0[2]J 5.10 09/11/2005 P 15.19 46.82 -31.63 <50 -- 0.72 <0.50 <0.50 <0.50 1.3[2] 3.70 MW-3 1/7/1992 16.10 63.05 47.04 2,100 - 41 <3.0 <3.0 57 NA -- No FP,No S 2/24/1992 - 16.10 62.37 46.63 NA - NA NA NA NA NA - No FP,No S 3/31/1992 -- 16.10 62.17 46.16 NA -- NA NA NA NA NA - No FP,No S 4/21/1992 -- 96.10 62.51 46.41 110 - 4.9 <0.5 <0.5 4.6 NA -- No FP,No S 5/11/1992 - 16.10 63.17 47.07 NA -- NA NA NA NA NA No FP,No S 6/23/1992 -- 16.10 63.26 47.16 NA - NA NA NA NA NA - No FP,No S 7/8/1992 - 16.10 64.50 48.40 55 - 1.5 <0.5 <0.5 1.2 NA -- No FP, No S 8/10/1992 - 16.10 65.43 49.33 NA - NA NA NA NA NA -- No FP,No S 9/15/1992 - 16.10 66.07 49.97 NA NA NA NA NA NA -- No FP,No S 10/6/1992 -- 16.10 66.20 50.10 300 -- 5.8 <0.5 <0.5 1.8 NA -- No FP,No S 11/11/1992 - 16.10 65.50 49.40 NA -- NA NA NA NA NA - No FP,No S 12/4/1992 - 16.10 64.23 48.15 NA - NA NA NA NA NA -- No FP, No S 1120/1993 -- 16.10 63.45 47.35 420 - 6.5 0.7 <0.5 4.5 NA - No FP,No S 3/22/1993 -- 16.10 61.57 45.47 NA -- NA NA NA NA NA -- No FP,No S 4/6/1993 - 16.10 61.08 44.98 200 -- 3 <0.5 <0.5 2.7 NA - No FP,No S 7/30/1993 -- 16.90 61.82 45.72 89 - 1.5 <0.5 <0.5 <0.5 NA No FP,No S 11/29/1993 -- 16.10 60.83 44.73 120 - 5.1 <0.5 <0.5 1.9 NA -- No FP,No S 3/23/1994 - 16.10 55.91 39.81 580 -- 24 15 2.9 14 NA - No FP,No S 6/22/1994 - 16.10 56.02 39.92 <"0 - 0.3 <0.3 <0.3 <0.5 NA - No FP,No S 9/28/1994 - 16.10 59.92 43.82 <50 0.7 <0.5 <0.5 <0.5 NA Na FP,No S 12/1/1994 - 16.10 58.80 -42.70 <50 -- 0.8 <0.5 <0.5 <0.5 NA INo FP,No S Report Date:October 21, 2005 Page 7 of 24