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r� <br /> Advanced BORING LOG <br /> GeoEnvironmentalInc.� IncBOREHOLE NO B6 <br /> " 837 Shaw Road, Stockton, CA 95215 <br /> (209) 467-1006 FAX (209) 467-1118 TOTAL DEPTH 50 Feet <br /> Project Langston's Market Drilling Co Enviroprobe <br /> Site Location 15615 South 7th Street, Rig/Auger Type Geoprobe 5400 <br /> Lathrop, California Logged By C Lee <br /> Reviewed By P Dotson <br /> Project No AGE-NC-98-0511 Date(s) Drilled 11/30/01 <br /> Notes sz Water level during drilling Page 1 of 2 <br /> Y Water level in completed well <br /> Sample Slows PID SoiE USCS Class and <br /> Depth iD (per 6") (ppm) Symbol Sod Description <br /> i0 <br /> — — SM Light olive brown,dry,unconsolidated silty fine sand, 25%silt Strong <br /> -5 B6-5' --- 13 — — hydrocarbons(HC)odor <br /> — — — SP-SM Dusky yellow,dry,unconsolidated fine to medium sand No HC odor <br /> -10 B6-10' --- 7 — — <br />' CL Moderate olive brown,moist to very moist,silty clay,low to moderate toughness and <br /> -15 B6-15' --- 74 — — low plasticity I <br />' SM Moderate olive brown, very moist,fine sand with clay(10%), low toughness and <br /> plasticity <br /> — ML Moderate olive brown,moist,clayey silt,moderate to high toughness and low to <br /> -20— B6-20' --- 47 medium plasticity <br /> 1 <br /> CL Moderate olive brown,saturated,sandy clay,<10%sand with patches of calcium <br />' -25— B6-25' --- 30 carbonate Low toughness and high plasticity No HC odor <br /> 1 <br />