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SOIL BORING LOG Boring No. IW-4 Sheet 1 of 1 <br /> Client Arco Station 5469 Date 3/25/02 <br /> Address 130 South Wilson Way, Drilling Company: Woodward Drillinq Company rig type: BK-81 <br /> Stockton,CA Driller: Frank Ramirez <br /> Project No. D000-336 Method Hollow Stem Auger hole diam_S" _Logged By: Scott Bittinger _ <br /> Well Pack sand: 50 ft. to 54.5 ft. Well Construction casing: PVC - <br /> bent.: 48 ft. to 50 ft. casino diam.:0.75" 2"diameter microporous tubing installed 52'-54.5' <br /> grout 0 ft. to 48_ ft. Depth to GW: 0 ft.Time/Date T ft.Time/Date <br /> Sample Blow Sam le Well <br /> Constru Depth LfrHO Descriptions of Materials PID <br /> Type No. Count Time necov. ct. IScale COLUMN I and Conditions PPM <br /> _ No samples collected 0'-45'bgs <br /> 4 5 <br /> 11:54 -_90_ 4 6 CL SANDY CLAY_gray brown,lowpercentage of silt,20_35%o fine grained - <br /> _ sand,moist,stiff <br /> _____ 4 7 <br /> _ CL SANDY CLAY,as above,until 47.5' <br /> 11:58 _1.0__0 4 8 M SILTY SAND 47.5'48.1',olive gray.40.50%fines_wet:medium dense - - <br /> _ S1LT 48.1'48.5',olive brown with orange iron oxide stains,moist,stiff <br /> 4 9 <br /> ----- -------------------------------------------- <br /> 39 — -- - - -- - - -- -- -- ---- --- -- - -- --^ --- <br /> _ S[LT 49'-50',brown with white caliche, Icw percentage of clay,moist,very <br /> 50- 12:01 100 5 0 ML stiff <br /> 5 1 <br /> ---------------------------------------------------- <br /> 12 — - - -- - ------- -- -- o-- - ^ ---- - --- - ------------------------------ <br /> ------- <br /> -- - <br /> _ SM SILTY SAND 51'52.1',brown, 15-25/o fines,wet,medj-um dense <br /> 17 1.2:0.7_ 100 5 2 <br /> - ------------ - --- --- — - ----- ----- - --- -----------fi-n-e--- --------- <br /> 19 ML SANDY SILT 52.1'-52.5',brawn,-3-0----3-5--%--- gsanddampstiff <br /> 5 3 <br /> -------------------------------- — - ------------------------------------------------------------------------------------------------------- <br /> - - -- <br /> 12:13 100 – 5 4 SP/SM SAND,brawn,10-20%fines,fine grained,wet, medium dense <br /> -----•--------------------------------------------- — — ------------------------------------------ -- - -------------------••-- ..........5 S <br /> --------------------------------- ------ ------- — ---------------------------•----•------------------------------------------------------------------------------ <br /> ---------------------------------- ----------------- ---------------------------------------------------------------------------------------------------- ----------- <br /> --------------------------------- --------------- -----------------------------------------–--------------------------------------------------------------------- <br /> ---------------------------------------------- --------------------------------------------------------- ------------------------------------------------------ <br /> ----------------------------------------- -------- ---------------------------------------------------------------------------------------------------------------- <br /> ----------------------------------------- ------- --------------------------------------------------------------------------------------------------------------- <br /> -------------------------------- ------- ------- -------------------------------------------------------------------------------------------------------------- <br /> Comments: <br /> -------- --------- <br /> Comments: No samples collected 0'-45'bgs.#2/12 sand used for filter pack. <br /> Sampled to 54.5',drilled to 54.5'and completed well. <br /> I <br />