ARCHIVED REPORTS XR0010017 - Laserfiche WebLink

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i_ • • 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 PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO Number Sampled NP (feet msl) (feet bgs) (feet msl) (pWL) (Frg/L) (pg/L) (pg/L) (UglL) (j.glL) 04L) (mg/L) Comments MW 10 9/12/2001 - Well Covered 12/12/2001 - Well Covered 3/13/2002 - Well Covered 6/18/2002 Well Covered 9/11/2002 Well Covered 12/18/2002 - Well Covered 06/11/2003 Well Covered 09/25/2003 1 Well Destroyed VW 1 5/20/1997 4416 340,000 330 540 21100 13,000 <1,200' No FP,No S 9/1/1998 4175 -- NA NA NA NA NA NA NA 12/2/1998 3843 NA NA NA NA NA NA NA 3/31/1999 3891 - NA NA NA NA NA NA NA 6/4/1999 3578 NA NA NA NA NA NA NA 9/2/1999 4030 NA NA NA NA NA NA NA 11/29/1999 3849 NA NA NA NA NA NA NA 3/16/2000 3452 NA NA NA NA NA NA NA 6/26/2000 3708 NA I NA NA NA NA NA NA 9/28/2000 4134 1 NA NA NA NA NA NA - NA 12/19/2002 4159 810 <5 0 <5 0 59 130 6 4[2] 03/06/2003 P 3869 350 092 <0 50 21 68 25[2] 06/11/2003 P 3795 <50 <0 50 <0 50 <0 50 <0 50 8 4]2] 346 09/24/2003 P 41 98 51 <0 50 <0 50 <0 50 <0 50 8 7(2) - 12/10/2003 P 4097 170 1 8 <0 50 68 1 5 13[2] - 03/08/2004 P 3875 770 0 63 J <0 50 59 J 33 J 19[2]J 211 06/24/2004 NP 4301 100 <5 0 <5 0 <50 <5 0 <5 0[2] 161 Water levels taken on 6123104 09/20/2004 P 4776 12,000 J <25 <25 110 570 27[2] - 12/20/2004 P 4437 10,000 J 094 <0 50 96 J 140 13[2] 05 03/28/2005 P 4111 18 000 J <0 50 <0 50 22 85 9 8[2] 0 9 06/19/2005 P 41 96 5 400 J <2 5 <2 5 35 J 130 4 8[2]J 0 9 09/12/2005 P 4594 24,000 J <10 <10 220 790 J <10[2] 1 7 Water levels taken on 9/11/05 112111120051 P 1 4295 — 8,500 — <25 <2 5 46 120 J <2 5[2] 089 Report Date January 25,2006 Page 18 of 25