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George's Service Project Name Page 1 of 2 Borehole No. MW-102 <br />425.2 Project No Date 4/29/97 Contractor V&W Drilling <br />Field Geo/Eng M. Niemi Drilling Method Hollow Stem Auger <br />Gep'ogical Tec nics Inc. <br />/ / / ,/ / / / / // / // / /111// / / / Borehole Log / / / / / / / // / / / / / / / / / / <br />Area 8, County Corner of Durham Ferry Rd. and Hwy 33/ San Joaquin Co. <br />Borehole Dia8" <br />Filter Pack <br />12' 0-39' <br />39-50Tot, Depth <br />Annular <br />50 Tot, Casing Depth 50 Casing Die 2" Screened Interval 47.5-45' <br />50-43.5' Seat 43.5-41' Slot Size 0.020" Grout 41-0' Water Depth +/-7' <br />fa (4 - <br />5 s_ + <br />c <br />- (u V1 <br />(4 Z 0 <br />a, <br />. <br />0 <br />— <br />- • .,. <br />L 0 C , 0 <br />o a) <br />v, <br />D (4 <br />Description <br />Remarks <br />OVM (ppm) <br />E _ <br />— _ <br />_ — — _ <br />— _ <br />— <br />_ _ <br />_ 0640 2 3 3 <br />— — — _ <br />No Core Recovery 1 <br />_ <br />_ <br />— _ — <br />_ — <br />_ — <br />— <br />— <br />_ 0647 6 <br />7 <br />7 <br />= <br />— _ -- _ —, <br />--':----•- <br />"— --------= _._.- <br />—•—•— <br />ML SILT—blue grey color, only a few inchs <br />recovered from shoe. <br />52 <br />Strong Gasoline <br />Odor <br />— <br />_ <br />_ <br />_ — _ _ — <br />_ — <br />_ <br />_ 0653 <br />9 <br />to <br />13 <br />— <br />— <br />-- <br />ML <br />Sm <br />SILT—(2.5Y6/6), grading to silty sand, <br />fine to medium grained, at 16', wet at <br />.. 15 5' <br />1 50 <br />Gasoline Odor _ <br />_ <br />— — — <br />— <br />_ — _ _ <br />— <br />_ <br />_ 0656 <br />s <br />5 <br />— <br />= <br />_ <br />ML SANDY SILT—(2.5Y6/6), fine grained <br />sand, black hydrocarbon staining. <br />4 <br />Gasoline Odor — <br />_ <br />_ <br />— _ _ — _ _ <br />— _ _ <br />— <br />_ 0703 <br />— _ <br />_ <br />SM SILTY SAND—(2.5Y6/6), fine grained, <br />black hydrocarbon staining. <br />4 <br />Gasoline Odor <br />_ _ <br />— <br />_ <br />_ <br />H <br />— _ <br />_ <br />— _ _ <br />— _ _ _ <br />_ _ <br />Sample Submitted <br />Annular Seal n Notes: ' ' SAND -_._ CLAY ',/// Grout <br />to Laboratory LEA SILT <br />0 <br />5 <br />10 <br />15 <br />20 <br />25 <br />30