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Environmental LOG OF BORING NO. UST-1 PAGE --t- ofd. <br /> Science & PROJECT NO: 02-531-003 DATE: 9/19/90 THROUGH <br /> A auaxv coVnW EngineerIlg, Inc. CLIENT. DELTA TRUCK SALES 9/21/90 <br /> 597 Center Avenue, Suite 350 SITE LOCATION. STOCKTON. CA REF. ELEV.: <br /> Martinez, California 94553 METHOD: HOLLOW <br /> 415-372-3837 BORING LOCATION: SEE MAP STEM AUGER <br /> UST-1 WELL <br /> o HOLE DIA.: 10 1/4" zo <br /> � �? 1z a +� = wa DRILLER: EXCEL TECH. <br /> of c a a � �., LOGGED BY. OLIVER CHRISTEN <br /> ti <br /> IL a N �` SUPERVISOR: SUSAN WICKHAM, RG. 3851 N <br /> U m <br /> n a Wo <br /> DESCRIPTION v <br /> 0 SURFACE: IIS' thick concroto <br /> CL CLAY, black, firm. moderately plastic. odor <br /> 2 <br /> 4 SANDY SILT. grcy/black. soma clays, soft, damp, <br /> ML hydrocarbon odor <br /> 6 <br /> 8 <br /> 10— RING O <br /> 14 10 FT. ML AS ABOVE <br /> 20 RING O SILTY SAND, brownish, well graded, medlum--grainod, <br /> 14 20 FT SM looso, damp, vary strong odor <br /> 30 42 7 RING 0 AIL <br /> 30 FT CLAYEY SILT, brown, dense. no odor <br /> 40— RING <br /> 42 6 40 FTML AS ABOVE. very dense. hydrocarbon odor <br /> • t' <br /> 50 22 y RING ® ML CLAYEY SILT, brown, some madlum-grained sand, very <br /> * 50 FT dense, strong odor <br /> r <br />