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TABLE 1MARY 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) (ugly (ug/1) (ug/1) (ug/1) (ug11) (ugli) (ug/1) (ug") (ug/1) (ppm) MONITORING (Feet) (Feet) (Feet) MW-2 03/03/95 4.82 17.35 -12.53 2600 (e) - 540 6.8 96 64 - --- 4.9 MW-2 04/12/95 4.82 16.23 -11.41 1800 --- --- 360 3.3 70 50 - -- 7.6 QC-1 (d) 04/12/95 --- --- --- 1900 --- --- 360 3.2 70 51 --- -- --- MW-2 07/20/95 4.82 16.45 -11.63 8800 (e) --- 1600 22 290 290 --- --- 6.4 QC-1 (d) 07/20/95 --- --- --- 7200 (e) --- 1300 17 240 240 --- --- -- MW-2 11/02/95 4.82 17.3 -12.48 5000 --- - 780 14 150 140 7900 -- 5.2 QC-1 (d) 11/02/95 --- --- --- 4800 --- --- 840 15 160 140 8400 -- MW-2 01/16/96 4.82 16.66 -11.84 2000 --- --- 300 8.6 62 48 3200 --- QC-1 (d) 01/16/96 --- --- --- 2000 --- 290 8.4 59 44 3000 --- MW-2 04/22/96 4.82 14.82 -10 680 --- 140 4 36 12 1700 -- --- QC-1 (d) 04/22/96 --- --- --- 490 -- 130 3 34 11 2100 --- --- MW-2 07/12/96 4.82 15.12 -10,3 4800 - --- 890 19 190 52 19000 - 2.2 QC-1 (d) 07/12/96 --- --- --- 5300 --- --- 990 21 220 55 20000 - --- MW-2 11/14/96 4.82 16.03 -11.21 24000 --- --- 590 25 70 ND<25 18000 --- 2.9 QC-1 (d) 11/14/96 --- --- --- 23000 --- -- 570 ND<25 68 ND<25 21000 -- --- MW-2 03/11/97 4.82 12.86 -8.04 770 --- 12 ND<5.0 ND<5.0 ND<5.0 970 -- 4.0 MW-2_ 05/22/97 4.82 13.45 -8.63 2700 --- 76 1.2 9.3 2.1 3100 --- 4.2 QC-1 (d) 05/22/97 --- --- --- 2800 --- 77 1.1 9.5 2.1 3400 --- --- MW-2 08/06/97 4.82 14.32 -9.5 --- --- --- --- --- --- --- - 6.3 MW-2 09/22/97 4.82 13.41 -8.59 2400 --- --- 730 10 7.9 74 2100 -- 6.5 MW-2 01/07/98 4.82 14.37 -9.55 16 --- 90 ND<5.0 ND<5.0 ND<5.0 17000 -- 6.0 QC-1 (d) 01/07/98 --- --- --- 12 110 ND<1.0 ND<1.0 2.3 18000 - -- MW-2 07/01/98 4.82 10.78 -5.96 1200 --- 22 ND<1.0 2.1 ND<1.0 4900 --- 4.8 QC-1 (d) 07/01/98 --- --- --- 1000 --- --- 22 ND<1.0 1.9 ND<1.0 4800 --- -- MW-2' 09/18/98 4.62 12.51 -7.69 12000 - 69 1.8 ND<100 7.7 14000 -- 5.6 QC-1 (d) 09/18/98 --- --- 13000 --- 56 1.7 ND<100 5.9 15000 MW-2 01/19/99 4.82 12.51 -7.69 3500 --- ND<1.0 ND<1.0 ND<1.0 ND<1.0 3600 --- MW-3 12/21/92 5.15 21.52 -16.37 170 --- 2.8 ND<0.5 ND<0.5 ND<0,5 --- --- MW-3 04!04193 5.15 18.59 -13.44 270 --- 23 ND<0.5 ND<0.5 ND<0.5 --- -- -- MW-3 04/26/93 5.15 18.34 -13.19 --- --- --- --- ___ ___ - MW-3 10/05/93 5.15 19.1 -13.95 920 --- --- 80 ND<0.5 ND<0.5 1.0 160 (c) --- - MW-3 01/07/94 5.15 18.82 -13.67 130 --- 12 ND<0.5 ND<0.5 1.5 --- -- - MW-3 04/20/94 5.15 18.07 -12.92 99 (f) --- 2.6 ND<0.5 ND<0.5 ND<0.5 35 (c) 3.8 - MW-3 04/25/94 5.15 18.04 -12.89 MW-3 07/28/94 5.15 18.5 -13.35 360 (e) --- 46 0.9 0.9 2.1 -- --- 3.6 MW-3 12/09/94 5.15 18.99 -13.84 61,0 --- --- 140 2.9 3.4 2.8 -- -- 3.9 MW-3 03/03/95 5.15 17.62 -12.47 ND<50 --- --- 2.3 ND<0.50 ND<0.50 ND<1.0 --- --- 4.7 MW-3 04/12/95 5.15 16.34 -11.19 ND<50 --- --- 0.75 0.89 ND<0.50 ND<1.0 --- - 8.1 Blaine Tech Services, Inc., Report 990119-J-2, BP Oil 11193 at 3202 W. Hammer Lane,Stockton,California Page 2