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Project Chase Chevrolet - Madison Project No AGE-NC-95-0144 BORING NO <br /> Site Address 423 North Madison Street Total Depth 55 Feet MW-20 <br /> Stockton, California Date 22 June 1998 <br /> ' Drilling Co Central Valley Drilling Logged by McKibben Page 2 of 2 <br /> Rig/Auger Type B-5318" and 10" Hollow Stem Reviewed by Henderson <br /> INC, <br /> Lithologic Description <br /> ' –MW20-45 0 416115 SC Green, saturated,medium dense, sandy clay to clayey SAND <br /> no HC odor <br /> 50—MW20-50 0 9116/20 Sc Dark green saturated, medium dense, clayey fine SAND <br /> no HC odor <br /> MW20-55 0 11/17/23 SM Dark green, saturated,medium dense to dense, silty fine SAND, <br /> no HC odor <br /> ' Bonng terminated at 55 feet bsg <br /> Ground«ater encountered at 15 feet bsg <br /> 60— Boring dual completed as monitoring well MW-20 <br /> Screen intervals 55'-50', 32'-12' <br /> ' Filter pack 55-48', 33-10' <br /> Bentonite plug 48-33' 10-9' <br /> Portland Cement 9-0 5' <br /> 70— <br /> Advanced <br /> iGeoEnvironmental, Inc. <br /> L WMIPROIBORING-1CHASEICHASMW20 SAM <br />