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li <br /> ALTA EM, INC. LOG OF BORING B7 <br /> (Page 1 of 1) <br /> SIERRA LUMBER slate Drilled :6111104 Backfill Material :Neat Cement <br /> 375 W.HAZELTON AVENUE Boring Depth :23' Backfill Interval :23'-0' <br /> STOCKTON,CALIFORNIA _ Hole Diameter :1.5-inch Logged By :D. Kawasnlci <br /> Drilling Method :Geoprobe <br /> 04483-01 Sampling Method :Direct Push <br /> Sampler Type <br /> 2"Split Spoon <br /> Standard Penetrometer <br /> U ® Grab <br /> Depthin a En r r Other _ n Sample u_ OVM Lab <br /> feet DESCRIPTION # RPH) REMARKS <br /> 0 <br /> Concrete Surface <br /> I <br /> Carl<yell owish-brown,moist,clayey -- 1 <br /> 5 ML sandy SILT a 41 No odor or discoloration in 5'sample. <br /> ' Moderate yellowish-brown,moist, <br /> 10 Ml. clayey SILT;with minor fine sand 1 r I 137-10 41 No odor or discoloration in 10'sample. <br /> --------------•---------- <br /> i <br /> Moderate yellowish-brown,moist <br /> 15 ML sandy clayeySILT------ - - 87-15 �1 No odor or discoloration in 1Ssampie. <br /> fll;p J------------- - ----- - <br /> CI- Greyish olive,moist,silt CLAY fl <br /> - - f B7-20 3 Faint hydrocarbon odor and greyish-olive <br /> 20 n y discoloration in 20'sample. <br /> 0 ----------------------- r <br /> m <br /> m <br /> C6Greyish-olive,wet,clayey SILT;with - a Slight hydrocarbon odor and greyish-olive <br /> ML minor fine sand r B7-23 2 discoloration in 23'sample. <br /> r - <br /> -- -------------------- <br /> MU <br /> w <br /> 0 Encountered groundwater at-23-24'. <br /> g 25 <br /> z <br /> Collected In-situ groundwater sample. Faint <br /> ghydrocarbon odor In groundwater sample. <br /> U <br /> OL <br /> M <br /> r <br /> f0 <br /> 30---L <br /> i <br />