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Geological Technics Inc. <br /> Borehole Log <br /> f <br /> C&B Equipment 1 <br /> Project Name _ Borehole No. MW-4 page of 1 <br /> Project No. 336.2 Date 10/17197 Contractor V&W Drilling <br /> Area & County 7474 W. 11th Street, Tracy, CA/ San Joaquin Co. <br /> I <br /> !=ield Geo/Eng M. Niemi Drilling Method Hollow Stem Auger <br /> Borehole Dia. 8" Tot. Depth 20' Tat. Casing Depth 20' Casing Dia. 2" Screened Interval 20-5' <br /> '.� Filter Pack 20-4' Annular Seal 4-2' Slot Size 0.020" Grout 2'-0' Water Depth +/-7' <br /> Remarks <br /> +' a, Z D <br /> CL <br /> E0 41 <br /> U E Description <br /> r a°i Q d o ~ m � a, U N >. <br /> osa E v, z 0 3 Q �° cn <br /> 0 <br /> 1314s CL CLAY-(2.5Y 4/3), plastic, organic <br /> e material, no odor. <br /> E' 5 <br /> 1316 s =— CL SILTY CLAY -(2.5Y6/4), slightly plastic, <br /> —_— no odor. <br /> 10 <br /> 1320 6 SW SAND-(2.5Y5/3), fine to medium <br /> a grained with pebbles to 1 cm, loose, n <br /> odor. <br /> 15 T _ <br /> 1324 6 = =- ML SILT-(2.5Y5/6), slightly plastic, no odor. <br /> 20 <br /> 1327 y' _—= CL SANDY CLAY-(2.5Y5/4), very fine to <br /> _—= fine grained, sticky, slightly plastic, no <br /> odor. <br /> 25 <br /> 30 <br /> No es? SAND CLAY ® Annular Seal ® Grout <br /> ' SILT Sample Submltted to Laboratory <br /> -.JI <br />