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Wright Environmental Services, Inc., Tracy, CA Exploratory Boring Log <br /> Project No 4090 Boring/Well No MW-8 Well Installed 2" dia Sch 40 PVC <br /> Client Mr Ed's Muffler Date Drilled July 22, 1997 Total Depth 18' Casing Depth 16' <br /> Location 595 E 11th St , Tracy,CA Logger CMP Screen Length and Size 10' of 0 020" <br /> Drilling Method 8' OD Hollowstem Top of Sand Pack 5' Sand Size 2/12 <br /> Permit. SR#013082 (on Tracy High lot) Top Bentonite 4' Cement Grout Seal 4' to 0 5' <br /> Water Levels 1 st Enc 1 V± 0 2 24 pm Surface vault box, Casing Elev 47 90 MSI. <br /> Static 9 05' 0 3 22 pm <br /> Sample Blow a Depth Borehole <br /> No OV Count to (ft) Lithofogy Log Completion <br /> Gravel Fill <br /> CL - Silty CLAY, grayish brown 10YR6/2, low-medium <br /> plasticity, v f sand 10% dissem , firm, damp <br /> 5 <br /> Mw-8-1 _ push Same as above, firm, damp <br /> Color change to yellowish brown 10YR5/6 at 8 feet <br /> 10 <br /> Mw a _ 3 SC/CL - Interbedded Clayey SAND and Sandy CLAY, yellowish <br /> brown 10YR 5/6, SC beds 80% f sand, 5% crs sand, 15% clay, <br /> saturated, CL beds low plasticity, moist, soft loose overall <br /> 15 Lost sample, returns similar to above <br /> MW-8 _ 8 <br /> Partially lost sample 16 5-18 0 feet <br /> M"`- push CL - Silty CLAY, yellowish brown, 10Yr 516, moderate <br /> plasticity, v f sand 10% dissem , firm, damp <br /> 2a <br /> Bottom of Boring = 18 0 feet, <br /> borehole caves to 16 feet <br /> Reviewed by RG/CEG <br />