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Tfe' 3 Groundwater Elevation and Analytical Data Tosco (Former BP)Station No. 11193 3202 W. Hammer Lane, Stockton, California Well Date of P/NP Well Depth to Groundwater Groundwater TPH-G TPH-D TPH B T E X ME VOCs[l] DO Number Sampling Elevation Water Elevation Elevation (ug/L) (ug/L) (ug/L) (ug/L) (ugIL) (ug/L) (ug/L) (ug/L) (ug/L) (ppm) (Feet) (Feet) (Feet) Change (Feet) MW-2 1/20/2000 4.82 13.26 -8.44 0.13 ND<50 --- ND<0.5 2 ND<0.5 1 5,400 (cont.) 5/4/2000 4.82 10.65 -5.83 2.61 560 --- ND<0.5 ND<0.5 ND<0.5 1.0 1,600 7/14/2000 4.82 --- --- --- --- --- --- --- --- --- --- ---------------------------------------•----------------Abandoned-------•----------------- MW-3 12/21/1992 5.15 21.52 -16.37 --- 170 --- --- 3 ND<0.5 ND<0,5 ND<0.5 --- 4/4/1993 5.15 18.59 -13.44 2.93 270 --- --- 23 ND<0.5 ND<0.5 ND<0.5 --- --- --- 4/26/1993 5.15 18.34 -13.19 0.25 --- --- ..• ___ ___ --- 10/5/1993 5.15 19.10 -13.95 -0.76 920 - --- 80 ND<0.5 ND<0.5 1 160 1/7/1994 5.15 18.82 -13.67 0.28 130 12 ND<0.5 ND<0.5 2 --- 4/20/1994 5.15 18.07 -12.92 0.75 99 3 ND<0.5 ND<0.5 ND<0.5 35 --- 3.8 4/25/1994 5.15 18.04 -12.89 0.03 --- --- ... --- _ 7/288/1994 5.16 18.50 -13.35 -0.46 360 --- --- 46 1 1 2 --- --- 3.6 12/9/1994 5.15 18.99 -13.84 -0.49 610 --- --- 140 3 3 3 --- 3.9 3/3/1995 5.15 17.62 -12.47 1.37 ND<50 --- --- 2 ND<0,50 ND<0.50 ND<1.0 --- --- 4.7 4/12/1995 5.15 16.34 -11.19 1.28 ND<50 --- --- 1 1 ND<0.50 ND<1.0 --- 8.1 7/20/1995 5.15 16.72 -11.57 -0.38 230 --- --- 5 ND<0.50 ND<0.50 ND<1.0 --- --- 7,9 11/2/1995 5.15 17.56 -12.41 -0.84 ND<50 --- --- 1 ND<0.5 1 ND<1.0 640 --- 4.2 1/16/1996 5.15 16.90 -11.75 0.66 86 --- --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 270 4/22/1996 5.15 14.84 -9.69 2.06 ND<50 --- --- ND<0,5 ND<t ND 7/1211996 5.15 15.13 -9.98 -0.29 ND<50 --- --- ND<0.5 ND<1 ND<1 ND<1 ND<10 --- 2,7 11/14/1996 5.15 16.01 -10.86 -0.88 ND<50 --- --- ND<0.5 ND<1.0 ND<1.o ND<1.0 ND<10 --- 3.4 3/11/1997 5.15 13.10 -7.95 2.91 --- --- --- --- ___ ___ ___ ___ --- 5/22/1997 5.15 13.74 -8.59 -0.64 280 --- --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 260 --- 4.2 l` 8/6/1997 5.15 14.60 -9.45 -0.86 --- --- --- _-. ___ 9/22//1997 5.15 14.70 -9.55 -0.10 --- --- 1/7/1998 5.15 14.64 -9.49 0.06 ND<50 ND<0.5 ND<1.0 ND<1.0 ND<1.0 49 --- 5,3 7/1/1998 5.15 11.01 -5.86 3.63 --- --- --- --- ___ .__ 9/18/1998 5.15 12.61 -7.46 -1.60 510 --- --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 590 --- 6.2 1/19/1999 5.15 12.77 -7.62 -0.16 270 --- ND<1.o ND<1.0 ND<1.0 ND<1.0 280 ... --- 10/14/1999 5.15 13.76 -8,61 -0.99 1,000 --- ND<1.0 ND<1.0 ND<i.o ND<1.0 1,100 --- --- 1/20/2000 5.15 13.53 -8.38 0.23 ND<50 --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 900 5/4/2000 5.15 10.98 -5.83 2.55 180 --- --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 510 7/14/2000 5.15 12.35 -7.20 -1.37 1,600 --- --- 29 1 2 18 20,000 --- --- 10/27/2000 5.15 13.19 -8.04 -0.84 1,000 --- --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 10,000 --- --- 1/19/2001 5.15 12.99 -7.84 0.20 140 --- --- ND<0.5 ND<0.5 ND<0,5 ND<0.5 228 --- ___ I;IConocoPhillipsUosco Marketing1111931Tablesll 1193 20MR03_xls Page 3 of 11