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Wright Environmental Services, Inc., Tracy, CA Exploratory Boring Log <br /> Project No 4111 Boring/Well No MW-3 Well Installed 2" dia Sch 40 PVC <br /> Client Haley Plying Services Date Drilled May 24, 1997 Total Depth 21 5' Casing Depth 20' <br /> Location Pescadero at Paradise, Tracy, CA Logger CMP Screen Length and Size 10' of 0 020" <br /> Drilling Method 8° OD Hollowstem Auger Top of Sand Pack 8' Sand Size 2112 <br /> Permit PHS-EHD #012546 Top Bentonite 6' Cement Grout Seal 6' to 1' <br /> Water Levels 1st Enc 13'± C 11 35 am Surface vault box, Casing Elev 21 76 MSL <br /> Static 710' @ 1 21 pm <br /> Sample slow Q Depth Borehole <br /> No OV Count � (ft} Lithology Log Completion <br /> Concrete and Subbase <br /> CL - Sandy CLAY, dark yellowish brown, low plasticity, fine <br /> sand 40%, silt to 20%, faintly bedded, rootholes 1%, stiff, damp <br /> 5 <br /> MW 3 , - 12 Same as above, less silt, stiff, damp <br /> Or Jf <br /> 10 <br /> MW 3-2 22 1 Same as above, fine sand 30%, color change to light olive brown <br /> 2 5Y5/6, faint bedding, very stiff, damp to moist <br /> 15 SC-CL - Sandy CLAY to Clayey SAND, dark yellowish brown <br /> MW 3- 20 10YR4/4, Clayey sand mterbeds saturated, clay beds moist, <br /> mad dense to stiff <br /> 2a <br /> MW 3 - 26 CL - Silty CLAY dark yellowish brown10YR4/4, low plasticity, <br /> fine sand 20% dissem in clay, faintly bedded, contains clayey <br /> sand mterbeds which are nearly saturated, clay damp to moist, <br /> stiff overall <br /> Bottom of Boring 21 5 feet <br /> Reviewed by RG/CEG <br />