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Wright Environmental Services, Inc., Tracy, CA Exploratory Boring Log <br /> Project No 4090 Boring/Well No MW-6 Well installed 2" dia Sch 40 PVC <br /> . Client Mr Ed's Muffler Date Drilled July 22, 1997 Total Depth 17 5' Casing Depth 17 5' <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 2112 <br /> Permit SR#013082 (on Tracy High lot) Top Bentonite 4' Cement Grout Seal 4' to 0 5' <br /> Water Levels 1 st Enc 10'± 0 8 03 am Surface vault box, Casing Elev 48 92 MSL <br /> Static 8 1' 0 10 06 am <br /> Sample Blow Q Depth Borehole <br /> No OV Count cz (ft) Lithology Log Completion <br /> Asphalt Pavement <br /> CL - Silty CLAY, yellowish brown, 10YR5/4, low plasticity, •A• J"•"- <br /> disem v f sand 20%, damp, drills firm <br /> 5 <br /> Mw 61 _ push Same as above, color change to grayish brown 10YR5/2, damp, <br /> drills firm <br /> 10 SC - Clayey SAND, very dark grayish brown 10YR3/2, fine <br /> Mw s 2 _ 10 sand to 80%, clay 20%, clay low plasticity, rare burrows, <br /> massive, med dense, becomes saturated at 11 feet <br /> 15 � <br /> MW-6-3 _ 5 CL - Sandy Silty CLAY, dark yellowish brown 10YR4/4, contains <br /> Mw-s a - push thin clayey sand beds, sand 30% overall, up to 50% in thin beds, <br /> clay 50-60%, firm, damp, push to 17 5 to retrieve partially <br /> lost sample <br /> 20 <br /> Bottom of Boring = 17 5 feet <br /> Reviewed by RG/CEG <br />