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TABLE 1=SUMMARY OF RESULTS OF GROUNDWATER MONITORING WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G B. T E X MTSE DO LAB ID SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ugA) (u9A) (ugA) (ugA) (u9A) (u9A) (ppm) MONITORING (Feet) (Feet) (Feet) i MW-7 08/05/91 6.21 30.82 -24,61 70 19 ND ND ND -- - PRE MW-7 08/15/91 6.21 -- --- --- --- --- - -- --- PRE MW-7 12109/91 6.21 31.36 -25.15 ND 19 ND 1.2 ND -- --- PRE MW-7 03/09/92 6.21 30.15 -23.94 ND ND ND ND ND - --- PRE MW-7 06/19192 6,21 30.19 -23.98 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - ANA MW-7 09/18/92 6.21 31.98 -25.77 90 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - --- ANA MW-7 12/09/92 6.21 32.33 -26.12 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- ANA QC-1 (d) 12/09/92 -- --- --- ND<50 ND<0,5 ND<0.5 ND<0.5 ND<0.5 --- --- ANA MW-7 03/11/93 6.21 29,85 -23.64 110 3.1 0.8 2.2 1.4 --- - PACE MW-7 06/15/93 6.21 27.74 -21,53 71 1.4 0.8 2.8 2.4 --- - PACE QC-1 (d) 06/15/93 --- --- --- 120 1.9 ND<0.5 5.9 4.6 --- PACE MW-7 09115/93 6.21 28.16 -21.95 170 1.2 ND<0,5 5.8 2.5 --- PACE QC-1 (d) 09/15/93 --- --- --- 160 1 ND<0.5 5.5 2.6 - --- PACE MW-7 12/22/93 6.21 28.03 -21.82 110 1.9 1.3 3.8 10 -- --- PACE MW-7 04/01194 6.21 27.15 -20,94 340 2,5 1 30 43 - 3.8 PACE QC-1 (d) 04/01/94 --- --- --- 330 2.6 0.9 28 42 --- --- PACE MW-7 07/27/94 6.21 27.21 -21.00 72 ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- 2.9 PACE MW-7 11/30/94 6.21 27.58 -21.37 140 ND<0.5 0.8 4.4 8.3 --- 3.8 PACE QC-1 (d) 11/30/94 --- --- 140 0.6 1 5 9.3 --- --- PACE MW-7 02/15/95 6.21 26.58 -20.37 90 ND<0.50 ND<0.50 2.1 1.7 - 3.4 ATI MW-7 04/21/95 6.21 24.61 -18.40 53 0.65 ND<0.50 1.4 1.4 --- 4.9 ATI MW-7 07/19/95 6.21 23.74 -17.53 81 0.59 N134.50 0.55 ND<1.0 - 5.4 ATI QC-1 (d) 07/19/95 --- --- --- 82 ND<0.50 ND<0.50 0.54 ND<1.0 --- --- ATI MW-7 (e) 10/20/95 6.21 24.15 -17.94 110 ND<0.50 ND<0.50 ND<0.50 ND<1.0 160 5.4 ATI MW-7 10/20/95 6.21 --- --- 89 ND<0.50 ND<0.50 ND<0.50 ND<1.0 110 5.2 ATI MW-7 (e) 04/23/96 6,21 20.78 -14.57 ND<500 ND4.5 ND<0.5 NM,5 ND<0.5 150 --- SPL MW-7 04/23196 6.21 -- --- ND<500 ND<0.5 ND<0,5 ND<0.5 ND<0.5 160 --- SPL MW-7 07112136 6.21 21.18 -14.97 ND<50 ND<0.5 ND<1 ND<1 ND<1 ND<10 5.9 SPL QC-1 (d) 07/12/96 --- --- --- ND<50 ND<0.5 ND<1 ND<1 ND<1 ND<10 -- SPL MW-7 10/18/96 6.21 20.70 -14.49 220 ND<0.5 ND<1.0 ND<1.0 ND<1.0 200 5.3 SPL 00-1 (d) 10/18/96 --- --- --- 240 ND<0.5 ND<1.0 ND<1.0 ND<1,0 200 -- SPL MW-7 02/26198 6.21 13.00 -6.79 120 ND<0.5 ND<1.0 ND<1.0 ND<1.0 95 4.5 SPL MW-7 07/07/98 6.21 12.20 -5.99 1800 ND<0.5 ND<1.0 ND<1,0 ND<1.0 2400 3.5 SPL MW-7 01/19/99 6.21 14.33 -8,12 3200 ND<1.0 ND<1.0 ND<1.0 ND<1.0 3800 --- SPL MW-7 (h) 07/14/99 6.21 13,13 -6.92 -- --- --- --- --_ j MW-7 07/26/99 6.21 13.30 -7.09 21000 ND<1.0 ND<1.0 7.2 2.4 118000 --- SPL MW-7 10/07/99 6.21 14.64 -8.43 33000 ND<1.0 ND<1.0 1.1 ND<1.0 19000 --- SPL Blaine Tech Servioes,Inc.,Report 991007-N-2,BP Oil 11192 at 1403 Country Club Blvd.,Sto&ton,California Page 6 - I