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George's Service Project Name Borehole No. MW-5 Page of 1 <br />425.2 Project No Date 4/30/97 Contractor V&W Drilling <br />Field Geo/Eng M. Niemi Drilling Method Hollow Stem Auger <br />Geological Technics Inc. <br /> ,,„ <br />Area & County Corner of Durham Ferry Rd. and Hwy 33/ Son Joaquin Co. <br />Borehole Dla <br />Filter Pack <br />8" Tot Depth <br />Annular <br />22 ' Tot Casing Depth 22' Casing Dia ' Screened Interval 22'-7' <br />22'-6' Seal 6'-4' Slot Size 0 .020 " Grout 4'-0' Water Depth +/-7' <br />a' (2)_ <br />4--. <br />5 (4 z 0 u <br />— <br />P <br />o a) <br />V) <br />D v) <br />Description <br />Remarks <br />OVM (ppm) <br />v <br />/ <br />_ <br />_ <br />_ <br />_ <br />— 0651 6 <br />7 <br />r/===: —__==== CL CLAY—(5Y5/3), plastic, geology sample <br />only. <br />_ = _... <br /> _.... <br />= ---.... <br />=- <br />— 0654 <br />3 <br />4 <br />4 <br />\ <br />=`=:-.- .... <br /> -I ' <br />SM SILTY SAND—(5Y5/2) blue green <br />staining, gasoline odor, moist, only <br />enough sample for geology. <br />28 <br />— <br />=, _ _..... <br /> _.... <br />--._ =----- <br />_ <br />8 <br />ii <br />14 ••••,= <br />— <br />_ ML SANDY SILT—(2.5Y6/8), fg sand, slightly <br />plastic. <br />_ <br />_ = <br />.„.=—...:i <br />=,-- <br />_ <br />— 0706 <br /> <br />7 <br /> <br />7 <br /> <br />7 <br />= <br /> =:-..... --... <br />SW <br />SM <br />SAND—(2.5Y6/4), fine to medium <br />from 20-20.5'. grained, <br />— <br />— <br />_ <br />SILTY SAND, fine grained, 20.5-21.5' <br />— <br />— <br />_ <br />_ <br />_ <br />CLAY CLAY <br />Sample Submitted <br />Notes: SAND ///./ Annular Seal ni Grout <br />to Laboratory LE-j SILT <br />0 <br />5 <br />10 <br />15 <br />20 <br />25 <br />3 <br />B orehole Log //////////////////// <br />////////////////////, <br />////////////////////7 /