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SOIL BORING LOG Boring No B44 Sheet 1 of 4 Client Former Arco Station 5100 Date 11114!2005 A ss 25775 Patterson Pass Road Drilling Company GregDnllrn n e Mobile Drill B-80 Tracy CA Dnller Chris St Pierre Project No U6100 Method Mud Rotary hole diam 5" Logged By Scott Bittinger Sam le Blow Sample Well Depth Oescnpbons of Materials PID Construc LITHO Type I No Count Time Recov t Scale COLUMN and Conditions (PPMI. - – a t ML SILT with SAND 40-41 light_brownish gray 92%silt 8%veryfine-------_............ _ grained sand dry very stiff 2 — _— Drilled 41-42 5 with to-cone bit due to hard soils Not logged – 4 3 - 4 4 ML SILT 42 5-45 6-light-brownish gra trace white caliche 43 5-44 -------------------- s _-_ _-_S B44-44 1325 _ 1-6%very fine grained sand dry verystrff 0 4 5 4 6 4 7 _ ML SILT 45 5-50 gray to light grayish brown yellow staining with and S 844-48 1345 4 8 without white caliche 0-2%very fine grained sand dry ve stiff 0 -------- ------------ --------------- --- ----- - — -- ------------------- ---- ------------------- --------------------- ----- ----- -------- 4 9 ---------------------- -------------------------------- ----------------------- ----- 5 0 _ ML only 6-inches of recovery 50-52 5 Material recovered is 5 i SANDY SILT dark grayish brown with yellow staining 85%silty fines__-____ _ 15%very fine grained sand moist stiff 16 5 2 5 3 _ ML SILT 52 5-57 grayish brown trace white caliche 1-3%fine to S B44-54 1405 5 4 medium grained sand dry_very stiff -__-" 0 ------------------------------------- ---------- — ---- –------ -- ------------------------- - - -- ss ss 5 8 S B44-59 14 15 5 9 ML SANDY SILT 57'-60' olive brown 80^85%silt, 15-20%fine rained _______ ___0 _ sand trace caliche and yellow staining dry stiff 8 0 Comments No soil cares were retained from 0 to 40 feet bgs