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Advanced BORING LOG <br />' <br /> GeoEnvironmental Inc.' BOREHOLE NO.: MW-7 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> (209)467-4006 FAX: (209)467-1118 TOTAL DEPTH: 25 Feet <br />' Project: Strong Property Drilling Co.: Mitchell Drilling Environmental <br /> Site Location: 5157 West Business Loop 205 Rig/Auger Type: CME 75HT- 8" Hollow Stem Auger <br />' Tracy, California Logged By: Brian W. Millman <br />' Project No.: AGE-NC-98-0440 Reviewed By: Cavin Lee <br /> Date(s) Drilled: 30 October 2002 <br /> Notes: Ground Water Encountered at 12 feet bsg = Water level during drilling Page 1 of 1 <br />' nt 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 /> l0 <br />' Concrete from P to 2' <br /> MW7-5 6/8/10 0 <br /> 7 CL:Brown,dry to damp,SILTY CLAY;fine sand <br /> presnt,medium plasticity and toughness,no <br /> hydrocarbon(HC}odor. Bentonite seal from 2' <br />' to 4' bsg. <br /> _10— <br /> MW7-10 8/17/22 0 = <br />' SM:Gray,damp,SILTY SAND;fine sand,30%silt,no <br /> HC odor. <br /> -15 MW7-15 12/18/23 0 <br /> CL:Gray,very moist,CLAY;medium plasticity and #3 sand from 4'to 25' <br /> toughness,no HC odor. bsg. <br /> --20 <br /> MW7-20 14/25/31 0 _. SM:Brown,saturated,SILTY SAND;fine sand,30% Screened interval from <br /> silt,no HC odor. Y to 25'bsg. <br /> CL:Light brown,very moist,CLAY;medium plasticity <br /> and toughness,no HC odor. <br /> -2.5- 1 <br /> MW7-25 19/21/35 0 CL:Light brown,very moist,CLAY;medium plasticity Cap at 25'. <br /> and toughness,no HC odor. I <br /> -30 <br />