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SOIL BORING LOG Boring No. MW-10 Sheet 2 of 4 Client Arco Station 5469 Date 5/30101 _ Address 130 South Wilson Way Drilling Company: Woodward Drilling Company rig type:BW-81 Stockton CA Driller: Van Leonard Ot No. D000-336 Method Hollow Stem Auger hole diam.: 10" Logged By: Scott Bittinger Sam le Blow Sample Well Depth Descriptions of Materials P!D Construc LITHO Type No. Count Time Recov. t. Scale COLUMN and Conditions PPM 12 _ 9E CLAYEY SILT 20'-20.7' S - MW10.2 20 9:22 90 z 1 ML SILT 20.7'-21.5',brown with white caliche,dry,very stiff - ---- 1 -- ---- --- - — - - -- ----- ---- -_------------ -- ------------ -------- 36 --------------------------------- -•------- -------- 2 2 ---------------------------------------^--------------------------------------------------------- -------- _ 2 3 2 4 ----- ^ -- - --------- 14 -- -- - --- 5 ---------------------------------------------------•--------------------------------------------- -------- S MW-10-2 21 9:30 -80- z 6 ML SILT 25'to 26.4',orange brwon,10.30%fine grained sand,dry, 2 -- -- ^-- - ------ 6-------- — -- - -- ---- - -------- z SILTY-SAND-26,4-'-to 26.5',red brown, 10-20%fines,sand is fine ----------- grained,dry -- - -^ ------- ----------------------------------- --------- 2 a— -------------------------------------------------------------------------------------------------- -------- ------ ----------------------------------------------- 2 9 -------- ----------------------------------- -------------------- 3 0 -- ------- — 10 S MW 10-3 20 9:35 80 3 t ML CLAYEY SILT,red brown,trace white caliche,trace black manganese, 3 - -- ---3---0------------- - --- -- -- -- dry,stiff - -------- z -------- ----------- --------------- ------- ---------- ------------ ---------- -- 3 4 3 5 S------ MW9-36------50----- --9=50 ---65-- 3 6 ML SILT,brown,dry_very hard-------------- ------ - - --- -- - 3 7 3 6 3 9 4 6 Comments: