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:IERRA BAY I=LBA; 18775 Tom Paine Road, Tracy CA <br /> Brief description of soils penetrated during work performed 1-16-1992 <br /> AUGER HOLE A-3 <br /> ' 0' _ <br /> ---I--- i Sandy loam, brown, moist , loose, clean <br /> ' I SM i <br /> ---1 -- -1 As above <br /> ' i SM l <br /> 1 l <br /> 2'ou 1 1 <br /> As above <br /> l 3 <br /> I SM 1 <br /> 31 <br /> 0" ---1----1--- <br /> 1 1 Clay, tan to brown , sticky, somewhat plastic <br /> 1 CL,_1 <br /> 4"Ou I 1 <br /> i I As above <br /> CL <br /> 5 '00 -__11 As above <br /> I 1 <br /> ' i CL I <br /> 6'0" 1 1 As above <br /> ---1 ----1 <br /> ' CL <br /> 7 '0u 1 _ I As above <br /> ' ---1 - --1 At 7 ' , encountered lens of bluish-gray to dark gray <br /> 1 ()R 1 sticky, plastic clay. Definite petroleum odor and <br /> 1 I staining noted. PID reading on sample at 7' (cold) <br /> ' B10" ---1__-_I 28-30 ppm. Sampled at 7 <br /> i 1 <br /> 1M L I Clays becoming sandier and less plastic. <br /> ' 9 0" _-_11 Occasional small tenses of bluish-black clays- <br /> 1 I definite odor and staining noted. <br /> lM1 I <br /> -1S -i Sample taken at 10'6"- very wet clayey sand <br /> ' 10 '6"___1____I Definite petroleum odor noted. <br /> r <br /> WM.J. HUNTER&ASSOC LITHOLOGIC DESCRIPTIONS <br /> ' 2220 LOMA VISTA DR. PLOT 3B <br /> SACRAMENTO.CA 95825 <br />