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SOIL BORING LOG Boring No. MW-10 Sheet 4 of 4 <br /> Client Arco Station 5469 Date 5130101 <br /> Address 130 South Wilson Way Drilling Company: Woodward Drilling Company rig type:BW-81 <br /> Stockton,CA Driller: Van Leonard <br /> Ot No. D000-336 Method Hollow Stem Auger hole diam.: 10" <br /> Log ed By: Scott Bittin er <br /> Sam le Blow Sample well Depth Descriptions of Materials PID <br /> Construc LITHO <br /> Type No. Count Time Recov. t. Scale COLUMN and Conditions PPM <br /> 12 _ <br /> S -- MW 10:6 12 10:31 90 6 1 SP SAND,medium grained,no fines,very wet,loose 1 <br /> ................................. <br /> - -------- ------------------ ----------------------------------------------- - ----------------------------- - ----- <br /> 12 <br /> 6 2 <br /> -------- ------------ -------------------------------- B 3 ------------------------------------------------------------------------------------------------- -------- <br /> ------------------- ----------------------------------- 6 4— -------------------------------------------------------------------------------------------------- -------- <br /> 30 <br /> S MW 10-6 50 10:52 90 6 s SP SAND,medium grained, no fines,very wet,-loose --- -- --- -- 0 <br /> ---- ------------------------------------ <br /> s s ML SILT,red brown,low percentage of clay,5%fine grained sand,ver�r <br /> _ hard ----------------------------------------- -------- <br /> s 7 P SAND 67'-67.3',coarse grained,very wet,loose <br /> -------- -- --22- - -- - --- — - ------ -- -- - -------- - -------------------------------------------------- -------- <br /> S MW10-6 50 __ -- s s S FM SILTY SAND 67.3'-67.8',red brown,20-40%fines,wet 0 <br /> L SILT 67,8'-68.2',red brown,moist,veryhard <br /> ---------------------------------- ----------------- 6 9 - ------ -- -- ---- ------- --- --- - ---- -- ----------------------- <br /> - -- - <br /> 35 —_ SW SAND 69'-69.8',fine to coarse grained,well graded,wet,dense 0 <br /> S MW-10.7 -----50-------11;10 60 7 o ML SANDY SILT 69.8'-70.1',red brown,30-40%fine grained sand,wet, <br /> - --- ------- ------ — -------------------------------------------------------------------------------------------------- -------- <br /> very hard <br /> - ---- 7 1 <br /> - ------------------------------- -- - -------- <br /> 18 _ SM SILTY SAND 71'-71.7',red brown,30-50%fines, moist,hard 0 <br /> MW10.7 50 11:20 5p 7 2 M SANDY SILT 71.7'-72.2', 30-50%fine grained sand, moist,hard <br /> 7 3 <br /> - ---- - -- - -- - - ------------------------------------------------ -- <br /> -s MW 10 7 50 11:30 35 — ML SILT 73'-73.5',red brown,damp,very hard p <br /> 7 4 <br /> -------------------------- ------------------ — ------------------------ ---------•-------------------------------------------------•------------- -------- <br /> Comments:Total depth of boring is 74 feet bgs. <br /> Continuously sampled from 65 to 74 feet bgs <br />