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TABLE 1 lof 2 ANALYTICAL RESULTS OF SOIL SAMPLES COLLECTED BY GEOREMEDIATION, INC. FOR METALS Former Circuit One Facility 2103 South Grand Avenue, Santa Ana, California Soil Boring Bodng GRI Report 5/26/1992 C-1-lft Total Threshold Limit Concentration Soluble Threshold Limit Concentration Date Copper Lead Arsenic Nickel Cadmium Copper Lead Nickel Cadmium Sampled (mg/kg)' (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/L)'(mg/L)(mg/L)(mg/L) 12/28/1988 3,783 18.12 7.385 53.59 ND(0.60)3 --4 --- -- -- Compostie March, 1990 1,600 610 - -- -162 48.3 B-1,2,3,4 Composite March, 1990 180 51.1 --- --- --- ---4.51 B-5,6,7,8 Composite March, 1990 599 74.4 - - -55.6 7.23 B-9,10 Composite March, 1990 82 7.6 --- -- --10.3 0.83 B-11,12,13,14 #20 (Concrete Slab on top March, 1990 1,340 89.8 7.64 104 4.55 126 9.1 10 0.2 of B-13) Composite March, 1990 31.5 5.77 -- -- ---ND(0.1)0.64 8-15,16 Composite March, 1990 27.1 15.4 -- -- --ND(0.1)0.36 ND(0.1) B-17,18,19 B-2 @ 3ft.4/23/1990 --- --- -- --- ---26.3 0.21 B-2 @ 5ft.4/9/1990 --- --- -- -- ---0.8 2.55 B-6 @ 3ft.4/23/1990 --- --- -- --- ---2.8 0.1 B-6 @ 5ft 4/9/1990 --- --- --- --- ---5.36 0.15 B-9 @ 3ft.4/23/1990 -- --- --- --- ---0.82 0.19 B-9 @ 5 ft.4/9/1990 --- --- --- -- ---0.44 0.14 Composite Concrete Sample 7/27/1990 -- - -- -- ---31.8 0.2 0.2 ND(0.1) B-1 10/22/1990 952 84.1 ND(0.4) 11.3 6.32 -- Comp-1 10/22/1990 3,213 5.54 6.78 38 5.12 Comp-2 10/22/1990 1,975 5.52 6.3 18.6 3.84 Comp-3 10/22/1990 1,441 89.1 8.79 48.6 4.98 Bin A 10/2/1991 --- --- --- -- -- 12 0.23 0.24 ND(0.05) Bin B-S-1 11/24/1991 --- --- -- --- ---140 9.1 1.2 ND(0.05) Bin C-S-3 11/24/1991 -- -- --- -- --180 45 1.3 ND(0.05) Bin B-S-2D 11/24/1991 -- -- -- -- --11,000 28 0.56 ND(0.05) GRI Report 5/7/1993 B-1 @ 20ft.1/21/1993 --- -- --- --- --0.45 0.05 -- -- B-1 @ 40ft.1/21/1993 - - --- --- ---1.1 0.07 --- --- ' · TTLC 2,500 1,000 500 2,000 ' 100 - - - 10 x STLC' . , 250 50, 50 20 10 250 50 r ' 20 10