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Advanced FIELD LOG <br /> GeoEnvironmental, Inc. <br /> BOREHOLE NO B1 <br /> � F 4005 North Wilson Way, Stockton, CA 96205 <br /> (209)467-1006 FAX (209) 467-1118 TOTAL DEPTH 50 Feet <br /> Project Langston's Market Drilling Co Envzroprobe <br /> Site Location 15615 7th Street, Rig/Auger Type Geoprobe 5400 <br /> Lathrop, California Logged By T Mikacich <br /> Reviewed By N Henderson <br /> Project No AGE-NC-00-98-0511 Date(s) Drilled 04/16/99 <br /> Notes :2 Water level during drilling Page 1 of 2 <br /> m Water level in completed well <br /> Sample Blows PID Soil USCS Class and <br /> Depth ID 1 ft (ppm) Symbol Soil Description <br /> 0 <br /> ML Brom,damp,SILT WITH SAND,fine sand,no petroleum hydrocarbon(HC)odor <br /> -5 BI-5' ... 0 —_ <br /> SP -SM Brown,damp,POORLY GRADED SAND WITH SILT, 90%medium sand, <br /> -10 131-10' 2 10%silt fines,no HC odor <br /> Q <br /> CL Brown,damp, SILTY CLAY,medium plasticity,no HC odor <br /> -15 B1-15' - 3 <br /> CL Gray to brown,damp,CLAY,with silt,medium plasticity,strong HC odor <br /> -20 B1-20' -- 155 <br /> CL Brown to gray,damp,CLAY,with silt, medium plasticity,no HC odor <br /> -25 B1-25' - 0 <br />