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Advanced 11"011BORING LOG GeoEnvironmental, Inc. CA 95215 BOREHOLE NO.MW-1 837 Shaw Road, Stockton, (209) 467-1006 FAX: (209) 467-1118 TOTAL DEPTH: 70 feet Project: ARROYO SMOG Drilling Co.: Cascade Drilling Site Location: 3012 EAST WATERLOO ROAD Rig/Auger Type: CME 95/8-inch hollow stem augers STOCKTON, CALIFORNIA Logged By: Arthur Deicke Reviewed By: Calvin Lee Project No.: AGE-NC-04-1168 Date(s) Drilled: 20 JULY 2005 Notes: a Water level during drilling Page 1 of 2 = Water level in completed well Depth Sample Blows PID Soil USCS Class and Well Well ID (per 6") (ppm) Symbol Soil Description Completion Description 0 '1'�] y —5ML:Orange-Brown to Dark-Brown,dry,CLAYEY SILT;slight plasticity,low toughness,low to moderate MW I-5 14/16/24 0 consistency,no hydrocarbon(HC)odor. / —10 ML:Orange-Brown,dry,CLAYEY SILT;low MW 1-10 12/12/16 0 plasticity,low toughness,low consistency,no HC odor. y —15 ML:Orange-Brown to Dark-Brown,dry,CLAYEY MW L-15 11/15/15 0 SILT;moderate plasticity,moderate toughness, moderate consistency,no HC odor. —20 CL:Orange-Brown,dry,SILTY CLAY;moderate / plasticity,low toughness,low to moderate consistency, MW1-20 14/14/11 0 no HC odor. -2 5 CL:Orange-Brown,dry,SILTY CLAY;moderate plasticity,low toughness,low to moderate consistency, Cement grout seal from MW1-25 12/13/17 0 no HC odor. .5'to 45'bsg. —30 CL:Orange-Brown,dry,SILTY CLAY;moderate MWl-30 14/15/17 8 plasticity,low toughness,low to moderate consistency, slight HC odor. —35 ML:Orange-Brown,dry,SANDY SILT;well-graded (<10%),slight plasticity,slight toughness,slight MW 1-35 13/17!17 25 consistency,slight HC odor. —40 ML:Orange-Brown,dry,SANDY SILT;well-graded (<10%),slight plasticity,slight toughness,slight MW 1-40 12/12/16 7 consistency,slight HC odor.