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Advanced BORING LOG <br /> ' GeoEnvironmental Inc.' BOREHOLE NO .IAS-4 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> �.._J <br /> ' (209) 467-1006 FAX (209) 467-1118 TOTAL DEPTH 25' <br /> Project Ripon Farm Service Drilling Co Mitchell Drilling Environmental <br /> ' Site Location 22871 South State Hwy 99 Rig/Auger Type CME 75 HT/ 8"hollow stern <br /> Ripon Logged By Brian Millman <br /> Calitornla Reviewed By N Henderson <br /> ' Project No AGE-NC-95-0137 Date(s) Drilled 04/25/00 <br /> Notes continuous core sampling = Water level during drilling Page 1 of 1 <br /> - x Water level in completed well <br /> Depth Sample Blows PID Soil USCS Class and Well Well <br /> ' ID {per 6"} (ppm) Symbol Soil Description Completion Description <br /> ' 0 Well cover msty boa <br /> i <br /> ' — Cement grout seal from <br /> -� 0 <br /> SM Brown,SILTY SAND,moist,no hydrocarbon(HC) 05'to 18'bsg <br /> 0 <br /> ' _= ML SILT with sand,very fine sand,no HC odor <br /> -10 IAS4-10 <br /> ' 0 = ML SILT with sand fine sand,moist,HC odor <br /> ' -15— 39 — SP Tan,POORLY GRADED SAND,fine sand,dry,no <br /> IAS4-15 3 HC odor <br /> ML Gray,SILT,dry to moist,HC odor <br /> ' _= Bentonite seal from IT <br /> to 18' bsg <br /> -20 <br /> #2/12 sand from 19 to <br /> ' 190 — SM SILTY SAND,saturated,HC odor <br /> IAS4-22 fit Screened interval from <br /> SP Gray,POORLY GRADED SAND,medium sand, 20'to 25 bsg <br /> saturated,HC odor <br /> ' <br /> 14 =— <br /> -2-5 ML Gray,S[LT,moist,HC odor Cap at 25' <br /> ML Gray,SILT,faint HC odor ::J <br /> 1 <br /> -30 <br /> 1 . <br />