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SOIL BORING LOG Boring No B-48 Sheet 3 of 3 <br /> Client former Arca Station 6100 Date 1 111 81200 5 and 11121/05 <br /> A40s 25775 Patterson Pass Road Drilling Company GreggDrilling n e Mobile Dnll B-80 <br /> Tracy CA Driller Chris St Pierre <br /> Project No U6100 Method Mud Rota hole diam 5' <br /> Logged By Scott Bittinger <br /> Sample Blow 5 Well Depth Descnptk)m of Matenais PID <br /> Construe LITHO <br /> Type No Count Time itecov t. Scale COLUMN and Conditions ppM <br /> _ SM SILTY SAND olive brown 80%tine grained sand 20%fines moist to <br /> S 848-81 1255 a 1 damp medium dense(80-81 5) 0 <br /> e 2 _ <br /> _ SP-SM SAND with SILT 81 5'-82 5 90-93%tine grained sand 7-10%silty fines <br /> s 3 with and without cementation,damp — <br /> 8 4 to-cone dnlled 82 5-84'through partially cemented strata_ <br /> _ SP-SM SAND with SILT 84'-84 7 94-93%fine grained sand 7-10%silty fines <br /> s 5 with and without cementation damp <br /> 8 6 SM SILTY SAND 85-87',olive brown 70%fine grained sand 30%silty <br /> _ moist <br /> S B48-87 900 8 7 0 <br /> '----- ----- -- ---- ---` ------ <br /> ------- — -- ---------------- ---------— ------"-------------------`-----------------— -- --- <br /> _ SM SILTY SAND 8T-90 olive brown 80%fine grained sand 24%silty <br /> e e moist <br /> S B48-89 __906 e s <br /> so <br /> s 1 no recovery 90_to 92 5' Likely sandy strata — _............................................ <br /> ----------------------------------------------------- — ------------- <br /> 9 2 <br /> 9 3 ---------------------------------------------------------------------- -------- <br /> _ CL only 8-inches recovery 92 5'-95' Material Is <br /> 9 4 SANDY CLAY with SILT Ii ht olive brown 30%fine grained sand trace <br /> ----------------------- --------------------- --------- silt <br /> d-----------dium stiff -- --" ---- --__-_ "'------ <br /> .- silt damp,medium stiff <br /> 9 5 <br /> S 848-96 9 30 9 6 ML SILTY-95-97',light olive brown trace yellow staining-dry stiff - 0 <br /> s7 <br /> _ CL CLAY tenth SAND and SILT, light olive brown 7-8%fine grained sand, <br /> s e fines most) claymoist,medium stiff <br /> ---------------------------------- ------- ---- — ---------- -- -----'------------------------------------------------ <br /> -------- <br /> ____----_-- - -- <br /> ss <br /> IM <br /> L SILT light olive brown dry stiff(98-100 5') <br /> 100 <br /> Comments Stopped dnlling at 85 feet bgs on 11118!05 Resumed 11121/05 <br />