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Advanced BORING LOG <br /> _ GeoEnvironmental, Inc. BOREHOLE NO MW-20 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> (209) 467-1006 FAX (209) 467-1118 TOTAL DEPTH 50 FEET <br /> Project FLAG CITY CHEVRON Drilling Co CASCADE DRILL <br /> Site Location 642I CAPITOL AVENUE Rig/Auger Type CME-75HT/8-INCH AUGERS <br /> LODI Logged By T CUELLAR <br /> CALIFORNIA <br /> Reviewed By C LEE <br /> Project No AGE-NC-96-0232 Date(s) Drilled 30 NOVEMBER 2004 <br /> Notes Soil sampled at 5 ft intervals between 15 and 50 feet, sz Water level during drilling Page 1 of I <br /> Boring dual-completed as monitoring well MW-19 = Water level in completed well <br /> Sample Blows PID Soil USCS Class and Well Well <br /> Depth ID (per 6") (ppm) Symbol Sod Description Ampletto B Description <br /> 0 <br /> SO ? Q Top Well Cap 0 5' <br /> ast� Cementgrout seal <br /> p � <br /> –5 MM <br /> W20-5 -- --- NO SAMPLE No soil sample collected ® 0 5 ft-6 ft <br /> Bentonite seal <br /> Eft-8ft <br /> –10 MW20 10 --- - NO SAMPLE No sod sample collected <br /> 7-20--- <br /> MW20-15 22-20-20 0 ML Pale brown-dark brown moist,hard,fine sandy #3 sand <br /> SILT 60%fines/40%sand no odor 8ft-255ft <br /> MW20-20 24-30-32 0 SM Pale brown w/wlute ppt and black fragments, <br /> —LiLsaturated,dense,silty fine SAND 80%sand/20% <br /> Vines,part cemented,no odor <br /> Screen interval <br /> loft-25ft <br /> –25— MW20-25 15-24-25 1000+ SM Brown,saturated dense,silty fine SAND,70% Bottom Well-Cap A <br /> sand/30/°fines,no odor 25 ft <br /> –30— MW20-30 10-15-18 - NO SAMPLE not enough sample to log <br /> Bentonite seal <br /> �'kkY 25 5 ft-43 ft <br /> �i R T, 51 Q Qv e. <br /> –35— MW20-35 10-15-10 0 LLLSM Dark brown,saturated,fine SAND w/silt,80% <br /> sand/20%fines,no odor <br /> –9 0 MW20-40 18-15-16 1000+ SP Brown,saturated,fine SAND,less than 5%fines <br /> unconsohdated,no odor <br /> #3 sand <br /> 43 ft-50 ft <br /> 45— MW20-45 8-6-15 36 SP Pale brown,saturated,fine SAND,less than 5% <br /> ti fines unconsolidated no odor <br /> Screen interval <br /> 45ft-50ft <br /> _50 MW20-50 - SM Brown,moist,silty fine SAND,70% Bottom Well-Cap B <br /> 1000+ sand/30% 50 ft <br /> fines well compacted,no odor <br />