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TABLE 1 -SUMMARY OF RESULTS OF GROUNDWATER MONITORING WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G TPH-D B T E X MTBE TOG HVOCs DO LAB ID SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ug/1) (ug/l) (ug/l) (ug/1) (ug/1) (ug/1) (ug/1) (ug/1) (ugll) (ppm) MONITORING (Feet) (Feet) (Feet) MW-5 02/28/96 10.70 8.53 2.17 ND<50 70 ND<0.5 ND<1 ND<1 ND<1 ND<10 - --- 9.6 SPL MW-5 09/05/96 10.70 10.73 -0.03 ND<50 ND<50 ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 -- -- 8.9 SPL MW-5 03/25/97 10.70 7.71. 2.99 ND<50 ND<100 ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 - - 7.7 SPL MW-5 10/15/97 40.70 12.28 -1.58 2200 --- ND<2.5 ND<5.0 ND<5.0 ND<5.0 93000 --- --- 6.2 SPL MW-5 01/15/98 10.70 10.98 -0.28 3600 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 33000 --- 5.4 SPL MW-5 '05107198 10.70 8.02 2.68 --- --- --- --- --- --- --- --- --- --- -- MW-5 09/03/98 10.70 10.28 0.42 13000 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 8000 - - 5.8 SPL MW-5 12/23/98 10.70 10.91 -0.21 130000 --- ND<2.5 ND<5.0 ND<5.0 ND<5.0 160000 - -- --- SPL MW-5 12/31/98 10.70 10.92 -0.22 110000 --- ND<25 ND<25 ND<25 ND<25 160000 - -- --- SPL MW-6 09/15/93 8.26 8.98 -0.72 400 --- 2.4 ND<0.5 ND<0.5 ND<0.5 --- --- --- --- PACE MW-6 01/12/94 826 9.62 -1.36 670 --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 6700 (d) --- --- 4.1 PACE MW-6 05/12/94 8.26 8.95 -0.69 5500 --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 12000 (d) --- --- 4.2 PACE MW-6 10/07!94 8.26 9.72 -1.46 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- --- 4.3 PACE MW-6 12108!94 8.26 9.88 -1.62 300 ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- - 4.6 PACE MW-6 02121!95 8.26 7.60 0.66 990 --- ND<0 50 ND<0.50 ND<0.50 ND<1.0 (c) --- 8.0 ATI MW-6 06109!95 8.26 7.12 1.14 --- - --- --- --- --- --- -- - --- MW-6 08/31/95 8.25 8.95 -069 99 --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 1900 --- - 8.1 ATI MW-6 11/02/95 8.26 9.50 -1.24 --- --- --- --- --- --- - - --- --- MW-6 02/28/96 8.26 6.19 2.07 90 --- ND<0.5 ND<1 ND<1 ND<1 1400 --- 8.2 SPL MW-6 09/05/96 8.26 8.49 -0.23 ND<50 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 40 --- --- 8.7 SPL MW-6 03/25/97 8.26 5.67 2.59 ND<50 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 -- - 7.4 SPL MW-6 10/15/97 8.26 9.79 -153 ND<50 -- ND<0.50 ND<1.0 ND<1.0 ND<1.0 920 - 5.7 SPL MW-6 01/15/98 8.26 8.71 -0.45 ND<1200 ND<200 ND<0.5 ND<1.0 ND<1.0 ND<1.0 820 - - 5.1 SPL MW-6 05/07/98 8.26 5.58 2.68 1500 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 2300 - 51 SPL MW-6 09/03/98 B.26 7.77 0.49 ND<50 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 17 -- - 6.2 SPL MW-6 12/23/98 8.26 8.32 -0.06 ND<50 -- ND<0.5 ND<1-0 ND<1.0 ND<10 20 --- --- SPL MW-6 (9) 12/31/98 8.26 --- --- - - - --- --- --- --- - --- --- MW-7 09/15/93 14.27 9.59 4.68 ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- --- PACE MW-7 (g) 01/13/94 14.27 --- --- -- - - - --- --- --- _.. MW-7 (g) 05/12/94 14.27 --- --- -- -- - --- --- --- MW-7 (g) 10/07/94 14.27 --- --- -- - - - --- --- --- MW-7 (g) 12/08/94 14.27 --- --- MW-7 -MW-7 02/21/95 14.27 8.21 6.06 ND<50 --- ND<0.5 ND<0.50 NO<0.50 ND<1.0 --- --- --- 6.9 ATI MW-7 (g) 06109/95 14.27 --- --- --- --- --- --- --- --- --- --- Blaine Tech Services, Inc., Report 981223-Y-1, BP 11195 at 16500 1-5, Latrop,California Page 4