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SOIL BORING LOG Boring No B-41 Sheet 2 of 7 <br /> Client Arco Station 6100 Date 4/19/2004 <br /> Address 25775 Patterson Pass Road Drilling Company GreggDrilling n !yRe Mobile Drill B-53 <br /> Tracy CA Driller Robert <br /> Project No 06100 Method Mud Rotary hole diam 5" <br /> Logged By Scott Bittinger <br /> Sam le Blow Sample Well Depth Descriptions of Materials PID <br /> Construe LITHO <br /> Type No Count Time I Recov it Scale COLUMN and Conditions PPM <br /> 2 1 <br /> _ ML SILT 20 5'-22 2' grayish brown with white caliche 2-7%very fine <br /> ___S------B41.22 -- 11 32 z 2 grained sand dry____________________________________ 0 <br /> --------------------- ------ --- ------------------------------------- -------- <br /> _ SILTY SAND 22 2-23 grayish brown 75-80%fine grained sand 1% <br /> S B41.23 11 42 ---- 2 3 SM medium to coarse grained sand 20-25%fines dry medium dense 0 <br /> -------------------- ---- — - -- - --- - -- - `- ---- '-- - --- --- <br /> 2 4 ML SILT 23;_28 5_light brownish-dray to grayish brown stron�xellow- <br /> -------- ----------------------------------- — - ------ -------- <br /> staining 23-23 5 less staining 23 5-28 5' trace to medium caliche <br /> --- z 5 cementation 0-3%very fine ed_sand dry _ <br /> 2 6 <br /> --------------------------------------------- --------- — <br /> 2 7 <br /> 2 8 <br /> ----- 2 s ML SILT-28-5-31_ grayish-brown-14%very fine grained sand_dry............... <br /> -----------------------------------`--- --- - - 0 <br /> S B4i-29 12 00 _ very stiff 0 <br /> 3 0 <br /> 3 1 <br /> ----- ---- -- --- - — - "---- -- -- ------------ ------------------------ <br /> ------------------------- - -`` <br /> _ ML SILT 31'-35' grayish brown with white caliche trace yellow stains <br /> ---- 3 2 1-5%ve fine Lamed sand d ve stiff <br /> 3 3 <br /> a 4 <br /> ----------------------------------------------------- — ----------------------------------------------------------------------------------------------- -------- <br /> 3 5 <br /> 3 s ML SILT 35-37 5 grayish-brown-trace white caliche 3-6%very fine_ _ <br /> ----------------------------------------------------- — ----------------- - --- <br /> _ grained sand dry very stiff <br /> 3 7 <br /> - ------`-`-------------------------------------- ------------------ 0 ' <br /> "_" -- --- - -- ----- - - --- - - - "- <br /> S 641-37 12 24 _ 0 <br /> 3 8 <br /> 3 9 <br /> _ ML SILT 37 5-40 5 light brownish gray with yellow stains 2-4%very fine <br /> 4 p grained sand d -very stiff <br /> Comments <br /> • <br />