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Advanced BORING LOG <br /> r GeoEnvironmental, Inc. BOREHOLE NO.: MW-4 <br /> 837 Shaw Road, Stockton, CA 95215 <br /> (209)467-1006 FAX: (209)467-1118 TOTAL DEPTH: 7W <br /> Project: NATIONAL FREIGHT Date(s) Drilled: 14 February 2002 <br /> Project No.: AGE-NC-98-0497 Page 3 of 3 <br /> Depth Sample Blows PID 1 Soil USCS Class and Well Well <br /> ID (per 6") (ppm) !Symbol! Soil Descripton Well <br /> Description <br /> C1.:SILTY CLAY,medium bs plas icity,low toughness, sand from 56'to 78' <br /> �/ approximately 30%organic matter,moderate olive g. <br /> brown,saturated,hard,100%recovery. <br /> -65 - MW4-65 15/19/29 0 <br /> I <br /> CL:LEAN CLAY,medium plasticity,medium Screened interval from <br /> toughness,olive gray,saturated, iard,100%recovery. 58'to 78'bsg. <br /> -70 MW4-70 18/20/20 0 <br /> CL:LEAN CLAY,medium plas icity,medium <br /> toughness,trace of micas,dark eenish grey,saturated, <br /> / hard,100%recovery. --- <br /> -7 5 MW4-75 17/50-6 0 -- <br /> CFE:FAT CLAY,high plasticity high toughness,dark <br /> ��- greenish gray,saturated,hard,70%recovery. <br /> 1.� <br /> Ca at 78'. <br /> MW4-78 17150-6 0 <br /> -80 - — — — - ---- - <br />