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Geological Techmcs Inc. <br /> Project Name C & 8 Equipment Borehole No. MW-1 Page--L of 1 <br /> -__ Project No. 336.2 Date 7/25/95 Contractor V&W Drilling Company C57 Lic. 710678 <br /> Area & County 7474 W. 11th St., Tracy Drilling Method _ Hollow Stem Auger <br /> i Field Geo/Eng T. McDonald Elevation of Measuring Point 99.28' Arbitrary Plane <br /> Tot. Dep. 21.5' Tot. Casing Dep. 2Q' Annular Seal_ 2-4' Filter Pack 4-20' Grout 0-2' <br /> Borehole Dia. 8.00"Casing Dia. 2.0" Screened Interval 5-20' Slot Size 0.020" Water Level ±6.5' <br /> Location-Northwest boring <br /> �,, o Q e U) ppsppU <br /> U Description Remarks <br /> C U1 � V NdOm r`] <br /> k 0 <br /> -:1 <br /> <I 7 _-___ ML CLAYEY SILT-(2.5Y5/6), plastic, few 1 ppm OVM <br /> root tubes <br /> i <br /> CLAYEY SAND-(green), very fine to 349 ppm OVM <br /> ,00z 7fine, well graded, hydrocarbon odor, <br /> 10 <br /> 1005 grades to a <br /> ML CLAYEY SILT (10YR5/6), plastic 50 ppm OVM <br /> [==! <br /> 7 ML CLAYEY SILT-(10YR5/6), plastic 15-16' 327 ppm OVM <br /> SU SAND-(10YR5/6), very fine, well <br /> graded, plastic clay matrix, hydrocarbon <br /> odor <br /> j T1 <br /> ML SILTY SAN D-(10YR5/6),very fine, 0 ppm OVM <br /> contains a silty/plastic matrix, loose, wet <br /> 25 <br /> 30 <br /> Notes: Silt Clay Sand (5Y5/6)=Munsell soil color description <br /> ==denotes sample submitted for laboratory analysis <br /> Pebbles <br /> == Clayey Sand Grain size is referenced to the Modified Wentworth Scale <br /> J <br /> rev 3/92 Drawn 10/05/95 <br />