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i TETRA TECH BORING LOG <br /> BORING I.D. NO. B-4 Page I of 1 <br /> CLIENT DSA T C 0100-01 LOCATION STOCKTON DEV CTR DATE 02/06/95 <br /> DRILL METHOD Hollow Stem Auer AUGER DIAMETER 8 ruches FIELD GEOLOGIST PHIL SKORGE <br /> 1 <br /> 3 <br /> Lu �'z <br /> z <br /> CL Q z a nCL <br /> CL - GEOLOGIC DESCRIPTION <br /> mo o n a �o D <br /> fr1 Ur U <br /> OL GRASS LAWN <br />' 5 6 30 SILTY CLAY. - VERY DARK BROWN (IOYR2/2) HIGH PLASTICITY FIRM MOIST <br /> 8 <br /> 16 <br /> --- ML <br />' 10 7 80 =— CLAYEY SILT. - DARK BROWN (7 5YR3/3) LCW PLASTICITY MEDIUM STIFF <br /> 10 MOIST <br /> 20 — <br /> 15 15 1260 -- BLUE GREY COLOR FAINT BUNKER FUEL ODCR <br /> 17 -- <br /> 26 <br /> 20 20 NO DARK BROWN NO ODOR <br /> 24 —— <br /> 23 —— <br />' 25 19 NU -- VERY STIFF TRACE FINE SAND <br /> 34 —— <br /> 50 <br />' T❑ @ 26 5 TERMINATED BORING NO GROUNDWATER ENCOUNTERED 100% <br /> SAMPLE RECOVERY BACKFILLED WITH CEMENT SLURRY <br /> 30 <br /> 35 <br /> 1 <br /> 40 <br /> REVIEWING GEOLOGIST Steve Brady SIGNATURE REG NO 6031 <br />