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SOIL BORING LOG Boring No MW-11 Sheet 1 of 3 Client BP/ARCO 5469 Date 2/13/2006 ddress 130 S Wilson Wy Drilling Company GreggDrilling ngtyRe Marl M-12 Stockton CA Drilling Foreman Jason Project No U-5469 Method HSA hole dram 10 Logged By Justin Crose Well Pack sand 31 ft to 53 ft Well Construction casing PVC screen 33 to 53 ft bent 28 ft to 31 ft casing diam 4" screen slot 0 02 orout 1 ft to 28 ft Depth to GW First encountered groundwater 44 fl Sam le Blow Sample Well Depth Descriptions of Materials PID Constru LITHO Tvpe No Count Time lRecov ct Scale COLUMN and Conditions PPM _ Asphalt 1 ---- ----- 2 -------------------------------------------- - 3 -------- -- --- 4 ------------------- ------ 5 ------------------------------------- ----- ------- 3 S MW-11-16 16 858 80 — 6 CL CLAY dark Yellowish brown 10YR 414 trace silt dry very stiff to hard 0 ------------------------------------ ------ — - 17 — 7 — ------------------------------------------------------------------------------------- --- --- -- ---------- ------------- --- -- — ------------------------------------- ------------------------------------------------ ----- 1 2 9 --silt --- --- S MW-11 9 5 16 9 04 70 _ CL CLAY yellowish brown 10YR 5l4,trace silE dry hard 0 30 1 0 1 1 1 2 1 3 14 1 4 ------- -------------- - ---- ---- — ---------------------------------- ----------------------------- ---------------- ---- ---- S MW-11-145 20 909 80 _ CL SILTY CLAY,dark yellowish brown 10YR 414 trace fine sand dry hard 0 23 1 5 1 fi 1 7 1 8 12 1 9 -- — ------------- -- ------- -- --- ---- - - ---- ---- - 14 _ CL 91CW CLAY dark yellowish brown 10YR 4l4,trace fine sand dry hard 0 S MW-11 20 15 915 90 2 0 Comments The boring extended to a total depth of 54 feet bgs !�5rX�r�� ENVIRONMENTAL INC arco 5489 MW t f STRATUS