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TABLE 1- MMARY OF RESULTS OF GROUNDWATER MONITORING WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G TPH-D TPH B T E X MTBE HVOC DO ID SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ug/1) (ug/1) (ug/1) (ug/1) (ugll) (ug/1) (ug/1) (ugll) (ug/1) (ppm) MONITORING (Feet) (Feet) (Feet) MW-4 07/01/98 5.43 11.61 -6.18 --- --- --- --- --- --- -_ MW-4 09/18/98 5.43 13.17 -7.74 --- --- --- ___ MW-4 01/19/99 5.43 13.76 -8.33 ND<50 -- ND<1.0 ND<1.0 ND<1.0 ND<1.0 2.3 --- --- MW-5 04/25/94 4.38 17.4 -13.02 170 --- 34 1.0 ND<0.5 8.1 --- --- 3.9 MW-5 07/28/94 4.38 17.86 -13.48 1000 --- 440 19 10 38 --- -- 3.9 QC-1 (d) 07/28/94 --- --- --- 1200 --- --- 470 23 11 46 --- --- --- MW-5 12/09/94 4.38 18.34 -13.96 930 --- 260 5.3 31 21 --- - 4.6 OC-1 (d) 12/09/94 --- --- --- 1000 --- --- 280 6 34 24 - -- --- MW-5 03/03/95 4.38 16.99 -12.61 1200 --- 450 7.4 5.9 28 -- --- 5.4 MW-5 04/12/95 4.38 15.71 -11.33 ND<50 --- --- 9,0 ND<0.50 2.6 1.5 --- -- 7.9 MW-5 07/20/95 4.38 16 -11.62 4100 (e) --- 220 ND<5.0 28 ND<10 --- -- 6.7 MW-5 11/02/95 4.38 16.9 -12.52 220 --- 44 1.4 8.7 7.4 ND<5.0 --- 3.6 MW-5 01/16/96 4.38 16.27 -11.89 160 --- --- 47 3.0 13 11 ND<5.0 --- --- MW-5 04/22/96 4.38 14.17 -9.79 100 --- --- 48 3 6 11 ND<10 --- --- MW-5 07/12/96 4.38 14.46 -10.08 960 --- 320 3,8 78 42.2 31 --- 2.9 MW-5 11/14/96 4.38 15.36 -10.98 560 --- 180 ND<1.0 49 17 19 --- 3.1 MW-5 03/11/97 4.38 12.42 -8.04 ND<50 --- 0.52 ND<1.0 ND<1.0 ND<1.0 ND<10 --- 3.7 MW-5 05/22/97 4.38 13.04 -8.66 60 --- --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 --- 4.9 MW-5 08/06/97 4.38 13.9 -9.52 --- --- --- --- --- ___ ___ 6.2 MW-5 09/22/97 4.38 13.99 -9.61 ND<50 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 -- 7.0 QC-1 (d) 09/22/97 --- --- --- ND<50 --- --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 -- --- MW-5 01/07/98 4.38 13.98 -9.6 ND<50 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 --- 6.3 MW-5 07/01/98 4.38 10.36 -5.98 ND<50 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 11 -- 5.6 MW-5 09/18/98 4.38 11.9 -7.52 ND<50 --- --- 3.2 ND<1.0 ND<1.0 ND<1.0 ND<10 --- 5.9 MW-5 01/19/99 4.38 12.11 -7.73 70 --- ND<1.0 ND<1.0 ND<1.0 ND<1.0 65 --- --- MW-6 04/25/94 3.56 16.73 A3.17 53 --- ND<0.5 ND<0.5 0.6 2.4 65 (c) -- 2.0 MW-6 07/28/94 3.56 17.2 -13.64 69 - --- ND<0.5 ND<0.5 ND<0.5 ND<0,5 --- - 2,2 MW-6 12/09/94 3.56 17.7 -14.14 ND<50 --- --- ND<0,5 ND<0.5 ND<0.5 ND<l -- 3.5 MW-6 03/03/95 3.56 16.34 -12.78 ND<50 (e) --- --- 0.83 ND<0.50 ND<0.50 ND<1.0 --- --- 4.3 MW-6 04/12/95 3.56 15.05 -11.49 57 --- --- ND<0.50 0.52 1\113<0.50 ND<1.0 --- 4.6 MW-6 07/20/95 3.56 15.37 -11.81 ND<50 --- --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 -- 7.3 MW-6 11/02/95 3.56 16.24 -12.68 ND<50 --- --- ND<0.5 ND<0.5 ND<0.5 ND<1.0 65 --- 4.3 MW-6 01/16/96 3.56 15.65 -12,09 ND<50 --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 89 -- - MW-6 04/22/96 3.56 13.53 -9.97 ND<50 --- ND<0.5 ND<l ND<l ND<l 58 --- - MW-6 07/12/96 3.56 13.85 -10.29 ND<50 --- ND<0.5 ND<1 ND<1 ND<1 62 --- 3.3 MW-6 11/14/96 3.56 14.75 -11.19 80 --- --- ND<0.5 ND<1.0 ND<1.0 2.1 64 --- 3.9 MW-6 03/11/97 3.56 11.74 -8.18 120 --- --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 130 --- 3.9 Blaine Tech Services, Inc., Report 990119-J-2,BP Oil 11193 at 3202 W.Hammer Lane, Stockton,California Page 4