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wi TABLE 1-SUMMARY 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) (ugll) (ug/1) (ug/1) (ug/1) (ug/1) (ugll) NO) (ppm) MONITORING (Feet) (Feet) (Feet) MW-6 05/22/97 3.56 12.34 -8.78 100 --- --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 57 --- 3.7 MW-6 08/06/97 3.56 13.2 -9.64 --- --- --- ___ --- --- --- --- 6.2 MW-6 09!22197 3.56 13.31 -9.75 ND<50 --- --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 6.3 MW-6 01/07/98 3.56 13.44 -9.88 ND<50 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 17 --- 5.9 MW-6 07101!98 3.56 9.59 -6.03 60 --- --- ND<0.5 ND<1.0 ND<1,0 ND<1.0 130 -- 5.4 MW-6 09/18/98 3.56 11.31 -7.75 50 --- --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 74 - 5.7 MW-6 01/19/99 3.56 11.81 -8.25 ND<50 --- --- ND<1,0 ND<1.0 ND<1.0 ND<1.0 45 --- -- MW-7 04/25/94 4.46 17.59 -13.13 76 1.0 ND<0.5 ND<0.5 2.0 --- --- 4.7 MW-7 07/28/94 4.46 18.06 -13.6 67 --- --- 6.8 ND<0.5 ND<0,5 ND<0.5 -- 4.6 MW-7 12/09/94 4.46 18.78 -14,32 57 --- --- 5.1 0.5 ND<0.5 ND<1 - - 4.7 MW-7 03/03/95 4.46 17,4 -12.94 ND<50 --- --- 5.8 ND<0.50 ND<0.50 ND<1.0 --- -- 4.3 MW-7 04/12/95 4.46 16.29 -11.83 ND<50 --- --- 4.6 ND<0.50 ND<0.50 ND<1.0 --- --- 7.8 MW-7 07/20/95 4.46 16.26 -11.8 ND<50 --- --- 3.1 ND<0.50 ND<0.50 ND<1.0 --- --- 5.3 MW-7. 11/02/95 4.46 17.1 -12.64 ND<50 --- --- 3.4 ND<0.5 ND<0.5 ND<1.0 ND<5.0 -- 4.2 MW-7 01/16/96 4.46 16.44 -11.98 ND<50 --- 4.6 ND<0.50 ND<0.50 ND<1.0 ND<5.0 --- -- MW-7 04/22/96 4.46 14.27 -9.81 ND<50 --- 2.0 ND<1 ND<1 ND<1 ND<10 --- --- MW-7 07/12/96 4,46 14.67 -10.21 ND<50 --- ND<0.5 ND<1 ND<1 ND<1 ND<10 - 1.7 MW-7 11/14196 4.46 15.6 -11.14 ND<50 --- --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 - 3.2 MW-7 03/11/97 4.46 12.55 -8.09 --- --- --- --- - - --- --- -- - MW-7 05/22/97 4.46 13.19 -8.73 --- - _-_ --- --- _-- _-_ ___ MW-7 08/06/97 4.46 13.99 -9.53 --- --- --- --- ___ MW-7 09/22/97 4.46 14.06. -9.6 ___ __- --_ MW-7 01/07/98 4.46 14.2 -9.74 ND<50 --- --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 -- 6.3 MW-7 07/01/98 4.46 10.63 -6.17 --- .-- MW-7 09/18/98 4.46 12.3 -7.84 --- --- - ___ --- -__ -__ MW-7 01/19/99 4.46 12.27 -7.81 ND<50 --- --- ND<1.0 ND<1.0 ND<1.0 ND<1.0 1.0 - --- QC•2 (h) 04/04/93 --- --- --- ND<50 --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- QC-2 (h) 10/05/93 --- --- --- ND<50 --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- QC-2 (h) 01/07/94 --- --- -- ND<50 --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 QC-2 (h) 04/20/94 --- ND<50 --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- �- QC-2 (h) 07/28/94 --- --- --- ND<50 --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- QC-2 (h) 12/09/94 --- ND<50 --- --- ND<0.5 ND<0.5 ND<0.5 ND<1 --- --- QC-2 (h) 03/03/95 --- --- ND<50 --- ND<0.50 ND<0.50 ND<0.50 N9<1.0 --- --- - QC-2 (h) 04/12/95 --- --- --- ND<50 --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 QC-2 (h) 07/20/95 --- --- --- ND<50 --- --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 --- QC-2 (h) 11102!95 --- --- ND<50 --- -- ND<0.5 ND<0.5 ND<0.5 ND<1.0 ND<5.0 QC-2 (h) 01/16/96 --- --- --- ND<50 --- --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<5.0 --- Blaine Tech Services, Inc., Report 990119-J-2, BP Oil 11193 at 3202 W. Hammer Lane,Stockton, California Page 5