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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/1) (ugll) (ug/1) (ug/1) (ug/1) (ug/1) (ug/1) (ug/1) (ppm) MONITORING (Feet) (Feet) (Feet) MW-8 09/03/98 8.91 8.41 --- ND<50 --- ND<0.5 ND<1.0 ND<1.0 2.0 19 - - 6.1 SPL MW-8 12/23/98 8.91 8.95 -0.04 ND<50 --- ND<D.5 ND<1.0 ND<1.0 ND<1.0 15 - - -- SPL MW-8 12/31/98 8.91 8.99 -0.08 ND<250 --- ND<5.0 ND<5.0 ND<5.0 ND<5.0 13 - --- SPL MW-9 09/03/98 8.04 7.52 --- ND<50 --- ND<0.5 ND<1.0 ND<1.0 1.6 ND<10 --- -- 6.1 SPL MW-9 (g) 12/23/98 8.04 -- --- --- --- --- - --- --- - --- --- MW-9 12/31/98 8.04 8.01 0.03 ND<50 -- ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 --- SPL MW-10 09/03/98 8.12 7.76 0.36 210 --- ND<0.5 ND<1.0 ND<1.0 1.03 210 --- - 6.1 SPL MW-10 12/23/98 8.12 8.22 -0.01 ND<50 --- ND<0.5 ND<10 ND<1.0 ND<1.0 ND<1.0 --- --- --- SPL MW-10 12/31/98 8.12 8.25 -0.13 470 --- ND<1.0 ND<1.0 ND<1.0 ND<1.0 490 --- - --- SPL MW-11 09/03/98 7.38 6.98 0.4 ND<50 - ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<10 - -- 6.1 SPL MW-11 12/23/98 7.38 --- --- -- - --- --- --- --- --- --- --- --- MW-11 12/31/98 7.38 7.55 -0.17 350 --- ND<1.0 ND<1.0 ND<1.0 ND<1.0 400 --- --- -- SPL MW-12 09!03198 8.37 7.98 0.39 ND<250 --- ND<2.5 ND<5.0 ND<5.0 ND<5.0 ND<50 --- --- 6.3 SPL MW-12 12/23/98 8.37 8.49 -0.12 ND<50 --- ND<0.5 ND<1.0 ND<1.0 ND<1.0 ND<1.0 --- 6.3 SPL MW-12 12/31/98 8.37 8.51 -0.14 ND<50 ND<1.0 ND<1.0 ND<1.0 ND<1.0 5.5 - - -- SPL QC-2 (h) 05/17/93 --- --- --- ND<50 ND<0.5 ND<0.5 ND<0.5 ND<1.0 --- --- --- PACE QC-2 (h) 09/15/93 --- --- ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- --- --- PACE QC-2 (h) 01/12/94 --- --- --- ND<50 - ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- -- --- --- PACE QC-2 (h) 05/12/94 -- -- ND<50 --- ND<0.5 ND<0.5 ND<0"5 ND<0.5 --- --- --- --- PACE QC-2 (h) 10/07/94 --- --- --- ND<50 --- ND<0.5 ND<0.5 ND<0.5 ND<0.5 --- --- PACE QC-2 (h) 12/08/94 --- -- 52 --- 0.6 1.1 2.2 7.8 - -- --- --- PACE QC-2 (h) 02!21195 --- --- ND<50 --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 - - - - ATI QC-2 (h) 06/09/95 --- - --- ND<50 --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 --- --- - - ATI QC-2 (h) 08/31/95 --- - --- ND<50 --- ND<0.50 ND<0-50 ND<0.50 ND<1.0 ND<5.0 - --- --- ATI QC-2 (h) 11/02/95 --- --- ND<50 --- ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<5.0 --- --- --- ATI QC-2 (h) 02/28/96 --- --- --- ND<50 --- ND<0.50 ND<0.50 ND<1 ND<1 ND<1"0 ND<10 --- --- SPL Blaine Tech Services, Inc., Report 981223-Y-1, BP 11195 at 165001-5, Latrop,California Page 5