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TABLE 1 -SUMMARY OF RESULTS OF GROUNDWATER MONITORING WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G TPIH-D B T E X MTBE TOG HVOCs DO LAB ID SAMPLINGI ELEVATION (a) WATER ELEVATION (b) (ug/1) (ug/1) (ugll) (ug/1) (ug/1) (ug/1) (ug/1) (ug/1) (ug/1) (ppm) MONITORING (Feet) (Feet) (Feet) MW-2 (g) 12/31/95 8.90 --- --- -- - --- --- --- --- --- --- --- - - MW-3 12/21/92 9.79 11.84 -2.05 1300 - 6.7 3.1 9.1 310 --- --- - - PACE MW-3 05/17/93 9.79 9.05 0.74 3600 - 20 93 470 700 - - - PACE QC-1 (e) 05/17/93 9.79 --- -- 4000 --- 23 12 520 810 --- - - PACE MW-3 09/15/93 9.79 10.44 -0.65 38000 --- 770 34 1700 3300 - - --- PACE MW-3 01/12/94 9.79 11.15 -1.36 380 --- ND<0.5 ND<0 5 ND<0.5 ND<0.5 --- -- --- 5.3 PACE QC-1 (e) 01/12/94 9.79 --- --- 400 --- N0<0.5 ND<0.5 ND<0.5 ND<0.5 1400 (d) --- - -- PACE MW-3 05/12/94 9.79 10.45 -0.66 180 --- 0.7 ND<0.5 4.3 4.2 1400 (d) --- --- 4.4 PACE QC-1 (e) 05112/94 9.79 --- -- 170 --- 0.7 ND<0 5 3.8 3.9 270 (d) --- -- PACE MW-3 10/07/94 9.79 11.21 -1.42 120 - ND<0 5 ND<0.5 ND<0.5 ND<0.5 --- --- 4.3 PACE QC-1 (e) 10/07/94 9.79 --- --- ND<50 - 07 ND<0.5 ND<0.5 ND<0.5 --- --- --- --- PACE MW-3 12/08/94 9.79 11.40 -1.61 470 - 1.1 1.8 ND<0.5 9.0 --- --- --- 4.8 PACE QC-1 (e) 12/08/94 9.79 --- --- 460 --- 0.7 1.1 ND<0.5 5.9 --- - - --- PACE MW-3 02!21195 9.79 9.11 0.68 4900 --- 6.4 ND<5.0 370 400 (c) --- --- 8.2 ATI MW-3 06/09/95 9.79 8.59 1.20 --- --- --- --- -- --- --- --- --- --- MW-3 08/31/95 9.79 10.46 -0.67 5500 --- 11 ND<5.0 890 46D 4300 - - 8.0 ATI MW-3 11/02/95 9.79 11.05 -1.26 --- --- --- --- --- --- --- - - -- MW-3 02128/96 9.79 7.66 2A3 1600 --- 3.2 ND<1 270 227 1200 - 8.0 SPL QC-1 (e) 02/28/96 9.79 --- --- 1400 --- 2.8 ND<1 240 204 1100 - --- --- SPL MW-3 09/05/96 9.79 9.99 -0.20 3700 --- ND<12 ND<25 420 ND<25 2100 --- --- 7.7 SPL MW-3 03/25/97 9.79 7.18 2.61 5300 --- 16 ND<25 ND<25 ND<25 7400 --- -- 7.2 SPL QC-1 (e) 03/25/97 9.79 --- --- 5400 --- ND<12 ND<25 ND<25 ND<25 7200 --- --- -- SPL MW-3 10/15/97 9.79 11.32 -1.53 1500 --- 9.1 2.3 320 73.5 8700 --- - 5.3 SPL QC-1 (e) 10/15/97 9.79 --- --- 1400 --- 8.4 1.5 250 57 7900 --- SPL MW-3 01/15/98 9.79 10.14 -0.35 24000 -- 20 ND<10 ND<10 ND<10 21000 --- -- 4.8 SPL MW-3 05/07/98 9.79 7.10 2.69 -- - --- --- --- --- --- --- --- -- MW-3 09/03/98 9.79 9.32 0.47 81000 --- ND<2.5 ND<5.0 360 100 78000 - --- 6.3 SPL QC-1 (e) 09/03/98 9.79 --- --- 66000 --- ND<5 ND<10 350 100 73000 - -- SPL MW-3 12/23/98 9.79 9.98 -0.19 62000 --- 4.2 ND<5.0 210 5.1 77000 - -- SPL MW-3 (g) 12/31/98 9.79 --- --- --- --- --- --- --- --- --- --- - - Blaine Tech Services, Inc., Report 981223-Y-1, BP 11195 at 16500 1-5, Latrop,California Page 2