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Advanced BORING LOG <br /> -7 GeoEnvironmental, Inc. BOREHOLE NO.MW-7 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> 1 (209)467-1006 FAX: (209)467-1118 TOTAL DEPTH: 35 Feet <br /> ' Project: Bob's Muffler Shop Drilling Co:: West Haz-Mat Drilling Corp. <br /> Site Location: 466 Moffat Boulevard Rig/Auger Type: LARJ8"Dia. Hollow Stem Augers <br /> ' Manteca, California Logged By: C.F. Lee <br /> Reviewed By: B.W. Millman <br /> ' Project No.: AGE-NC-98-0520 Date(s) Drilled: 02/25/02 <br /> Notes: = Water level during drilling Page 1 of <br /> ' = Water level in completed well <br /> Depth Sample Blows PI❑ 5oii USCS Class and Well Well <br /> tID (per 6") (ppm) Symbol Soil Description Completion Description <br /> 0 <br /> Well cover/cristy box <br /> ;/z <br /> 5M:Greenish brown,dry,unconsolidated fine sand Cement grout seal from <br /> with silt(<20%). 0.5 to I l'bsg. <br /> ' <br /> _10— MW-7-10' 35/34/40 3.5 <br /> SP:Yellowish green,moist,unconsolidated fine sand; <br /> upper 1/3 contained root material. <br /> Bentonite sea]from 11 <br />' to 13' bsg. <br />' -15 MW-7-15' 18/25/34 3.9 <br /> SP:Yellowish green,wet,unconsolidated medium <br /> sand. <br />' SC:Yellowish green,wet,clayey fine sand;soft with <br /> low plasticity. <br />' - <br /> 20— <br /> MW-7-20' 17/47/50 4.5 <br /> SP:Alive green,moist,unconsolidated medium sand. #3 sand from 13 to 35' <br /> bsg. <br />' CL:Olive green,moist clay with silt(<20%);moderate <br /> to high toughness,with high plasticity- <br /> _25— <br /> MW-7-25- <br /> lasticity.-25MW 7-25' 18/20/26 4.5 .4: _ SM:Olive green,saturated,unconsolidated fine sand Screen interval from 15 <br /> with silt(10%). to 35'bsg,0.020-inch <br />' slots. <br />