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Advanced BORING LOG <br /> _ 71 <br /> df GeoEnwironmental, Inc. BOREHOLE NO IAS--1 <br /> 1 ' \ 837 Shaw Road, Stockton, CA 95215 <br /> TOTAL DEPTH 60 FEET <br /> (209) 467-1006 FAX (209)467-1118 <br /> Project Former CANTEEN CORP Drilling Co Mitchell Drilling Envlronrnental <br /> Site Location 1500 Shaw Road Rig/Auger Type CME 75 - 8" HSA <br /> Stockton, California Logged By Paul Dotson <br /> Reviewed By N Henderson <br /> Project No AGE-NC-99-0612 Date(s) Drilled 25 February 2002 <br /> Notes Total depth ofboruig 60 feet bsg Boruzg sz <br /> Water level during drilling Page 1 of 2 <br /> completed as 2-rnch diameter in-situ air sparge well x Water level in completed well <br /> Well Wel! <br /> Depth Sample Blows PID Soil uSCS Class and Completion Description <br /> !ID (per 6") (ppm) Symbol Sod Description <br /> Well cover cristy box <br /> 0 Asphalt Surface <br /> CH <br /> AT CLAY,high plasticity,high toughness,dark <br /> yellow brown,damp,stiff to very stiff,50%recovery <br /> –5 IAS1-5 4/11/16 0 <br /> • <br /> ML SILT,low plasticity,loin toughness micaceous, <br /> approximately 10%fine sand,moderate brown,damp, <br /> –�0 — hard,l OD%recovery <br /> IAS1-10 18/28/40 0 <br /> SM SILTY SAND,approximately 20%fines,fine <br /> sand,moderate brown,dry,medium dense to dense, <br /> �� — — 60%recovery <br /> IAS1-15 8/11/20 0 <br /> SM/ML SILTY SAND/SANDY SILT,approximately <br /> equal percentages fine sand and fines,moderate brown, <br /> –20— J.AS2-20 18/28/30 0 — dry,dense/hard,90%recovery <br /> Cement grout seal from <br /> 5'to 51'bsg <br /> –25 IAS1-25 10/16/27 0 <br /> CL SILTY CLAY,medium plasticity,low toughness, <br /> trace of rmcas,dark yellowish bio AT,,damp, e y sti`f <br /> to hard,100%recovery <br /> IAS1-30 11/14/22 0 <br /> ML CLAYEY SILT,low plasticity,low toughness, <br /> —_—_ micaceous,dark yellowish brown,damp,very stiff to <br /> –35 — hard,70%recovery <br /> IAS1-35 7/18/35 0 <br />