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I <br /> Advanced BORING LOG <br /> GeoFnvironmental, Inc. BOREHOLE NO P-21 <br /> 4005 North Wilson Way, Stockton, CA 95205 <br /> (209)467-1006 FAX (209)467-1118 TOTAL DEPTH 20 Feet <br /> Project FLAG CITY CHEVRON Drilling Co Enviroprobe <br /> Site Location 6421 Capitol Avenue Rig/Auger Type Geoprobe 54001 1 25" rods <br /> Lodi, California Logged By T Mikacich <br /> Reviewed By N Henderson <br /> Project No AGE-NC-96-0232 Date(s) Drilled 05/08/00 <br /> Notes P-21 terminated at 20'bsg Grab water sample collected Water level during drilling Page 1 of 1 <br /> between 17&20'bsg Backfilled with portland cement s Water level in completed well <br /> Sample Blows PID Soil USCS Class and <br /> Depth ID ft (ppm) Symbol Soil Description <br /> 0 <br /> _= ML Light brown to brown,moist,CLAYEY SILT,trace fine sand and abundant white <br /> mineralization No hydrocarbon(HC)odor <br /> -5 P-21-5' --- 0 — <br /> ML Brown to olive-green,moist,CLAYEY SILT,trace fine sand,mica and trace iron <br /> oxidation No HC odor <br /> -10 P-21-10' --- 0 -- <br /> SM Brown,moist SILTY SAND,fine to medium sand No HC odor <br /> -15 P-21-15' -- 1 <br /> SM Brown,wet SILTY SAND,fine sand and iron oxidation No HC odor <br /> -20 P_21_20' ___ 1 Grab ground water sample P-21-W collected from 17 to 20 feet below surface grade <br /> (bsg) <br />