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Wright Environmental Services, Inc., Tracy, CA Exploratory Boring Log
<br /> Project No 4090 Boring/Well Na PB-18 Well Installed No
<br /> nt Cox and Cox Date Drilled Apr 19, 2001 Total Depth 26'
<br /> O
<br /> Logger CMP Cement Grout Seal 26' to surface
<br /> cation 595 E 11th, Tracy, CA LQ99 Seal set by tremae line filled from
<br /> Drilling Method 3" CD GeoProbe botom to top of borehole
<br /> Permit: PHS EHD 0025693
<br /> Water Levels 1st Enc 11' Static NM
<br /> Borehole
<br /> Sample Cont a Depth Lithology Log Completion
<br /> No PID Push m (ft)
<br /> Road Base
<br /> M28
<br /> CL - Sandy CLAY, brown, low plasticity, f sand 10-15%,
<br /> rare crs sand, massive, stiff, damp5
<br /> Same as above, inc f sand to 45%, stained gray, massive,
<br /> stiff, damp-very moist at 8 feet
<br /> a h+
<br /> Ps-ie 1 0 CL - Sandy CLAY with SAND interbeds, sand, dark brown,
<br /> 312 :.'
<br /> a locally stained, low plasticity fines, rootholes infilled with clay,
<br /> crudely bedded, clay low plasticity and stiff and damp overall, A,
<br /> lost most of sample, saturated below 11 feet
<br /> e.,s
<br /> 80
<br /> 15 SP - SAND, gray, no stain, f sand up to 8o%, some gravel,
<br /> some thin clay strata, dense, saturated
<br /> Same as above, massive, no stain, saturated "+
<br /> A•
<br /> 20
<br /> X9151 6 Same as above, clay bed at 21-22 feet, med dense, saturated
<br /> 0
<br /> 35-15 _ 25
<br /> SC - Clayey SAND, brown, f sand to 80%, massive, moist to
<br /> damp, clay plugging porosity, med dense
<br /> Bottom of Boring = 26 feet
<br /> Reconnaissance groundwater sample
<br /> interval 26 to 22 feet
<br /> Reviewed by RG/CEG
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