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1 Project Chase Chevrolet - Madison Project No AGE-NC-95-0144 BORING NO <br /> i Site Address 423 North Madison Street Total Depth 55 Feet MW-21 <br /> Stockton, California Date 23 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 /> 01 5�0ti� 04�m� ��'1��°G° ��b1�S�G�mGti�4~�,vo� Lithologic Description <br /> 1 <br /> ' –MW21-45 184 12/21/27 SM Dark green-gray, saturated dense, silty fine SAND <br /> moderate HC odor <br /> 50—MW21-50 20 11/13/16 SM ;. - Dark green-gray, saturated, medium dense, silty fine SAND, <br /> • :�•I; increasing silt downward slight HC odor <br /> 1 <br /> Dark, green-gray, saturated, medium dense, silty fine SAND, <br /> MW21-55 130 12/15/22 SM1 slight HC odor ML - , -� •! Dark green saturated, hard, SILT, slight HC odor <br /> –1 Boring terminated at 55 feet bsg Ground water encountered at 15 feet bsg <br /> 60— Boring dual completed as monitoring well MW-21 <br /> Screen intervals 53'-48', 32-12' <br /> 1 – Filter pack 53-46', 33-10' <br /> Bentonite plug 46-33', 10-9' <br /> Portland cement 9-0 5' <br /> i 70- <br /> 1 <br /> 1 - <br /> 1 $a- <br /> 1 - <br /> 1 Advanced <br /> ' L SAMIPR0460RING-1lGHRSEICHRSMW21 SAM GeoEnvironmental, Inc. <br />