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EXPLORATION ILL HOLE LOG HOLE No. 15 <br /> PROJECT MONITORING WELL INSTALLATION DATE 5/11/83 LOGGED BY JEM <br /> FORWARD INC. CLASS II - 1 DISPOSAL SITE <br /> DRILL RIG AT-650 HOLE DIA. 8" SAMPLER Modified California <br /> GROUNDWATER DEPTH INITIAL 621± FINAL 41' HOLE ELEV. 39'+ <br /> DESCRIPTION W > " y z Z z <br /> o a W - <br /> yV9 Y 0 <br /> O Oar <br /> V O O M V Q ® O H <br /> ® d D Q Z <br /> Q W <br /> Silty CLAY; dark brown, dry, hard CH <br /> Sandy, silty CLAY; brown, moist, CL <br /> stiff; minor gravel fragments to <br /> 1/4" diameter. Sand lense <br /> between 6' and 8.5' . Sand coarse <br /> grained with minor gravel to 1/4" <br /> - 10 - <br /> 15 - <br /> Increase <br /> 015Increase in moisture between 20' 2 <br /> and 25' . Not saturated <br /> 25 <br /> Harder drilling from 25' down <br /> 30 <br /> 35 <br /> Very hard drilling @37' . Gray <br /> brown in color <br /> -110- /100+ <br /> -45- <br /> 50 <br /> PROJECT 116-1.4 BETA ASSOCIATES Page 1 of 2 <br />