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SOIL BORING LOG Boring No. B-1!MW-1 Sheet 1 of 3 Client Arco Date 615100 Address 130 Wilson Way Driller Woodward rig t e: BK-81 Stockton,CA Drilling Foreman Van Leonard Project No. D000.336-1 Method Hollow Stem Auger centinuous core hole diam.: 10" Logged By: Doug Guenther Well Pack sand: 53 ft. to 31 ft. Well Construction casing: PVC screen: 33-53 feet bgs — bent.: 31 ft. to 29 ft. casing diam.: 4" screen slot: .020 grout: 29 ft. to 0 ft. Depth to GW: 040 ft.Tirn JDate 1030 06/05/00 ft.Tirne/Date Sam le slow Sam le_ Constna Depth LITHO" Descnptlonsof Materials PID ..: P _ - T e Nor.. count rime Recm et: Scale' COLUMN and Conditions _ 2"asphalt 6"base rock 1 gravel fill —2 CLAYEY SILT,brown,low plasticity,soft,dry– – _ 3 4 15 5 30 30 6 S 61-7 50 905 BO _ ML SILT,brown,low pEasticity,stiff,dry 0 7 11 8 12 _ 14 —9 5 B1-9 20 912 100 _ ML SILT,brown,low plasticity,mottling,stiff,dry 0 ---10----- 1 0 15 —_ ML CLAYEY SILT,brown,slight plasticity,stiff,dry 20 1 1 20 _ 30 1 2 50 for 5" _ 1 3 5 81-13 25 923 80 _ ML CLAYEY SILT,brown, 5%sand,low plasticity,stiff 0- 351 4 `-- ---- ------ -----` ------- — -- – `-------------------•----`----------------------------------------------------------`----.- 50 _ t 5 ML CLAYEY SILT,brown,slight plasticity,medium stiff 7 _ trace orange iron oxides 10 1 6 12 20 1 7 S 61-17 35 931 100 _ ML SILT,brown, low plasticity,soft 0 50 for 5" 1 a 60 1 9 ML SILT,olive brown,drl---` – 11 _ low plasticity,crumbly,very soft --------------------------------------- - -- - - - 25 2 a Field Location of Boring: Comments:Total depth of boring:60 feet bgs Bentonite backfilled from 53 to 60 feet bgs as a bottom seal for the well. *3 sand used as a filter pack. Delta Env1!'U�tCil�Cit�� Consultants, Inc.