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SOIL BORING LOG Boring No, IW-2 Sheet 1 of 1 <br /> Client Arco Station 5469 Date 3/26/02 <br /> Address 130 South Wilson Way_ Drilling Company: Woodward Drilling Company ri e:SK-81 <br /> Stockton,CA Driller: Frank Ramirez <br /> Project No. 0000-336 Method Hollow Stem Auger hole diam.: 8" <br /> Logged 13y:_ Scott Bittin er <br /> Well Pack sand: 49 ft. to 53.5 ft. Well Construction casing: PVC <br /> bent.: 47 ft. to 49 ft. casing diam.:0.75" 2"diameter microporous tubing installed 51'-53.5' <br /> grout: 0 ft. to 47 ft. Depth to GW: 0 ft.Time/Date V ft,Time/Date <br /> Sample Blow Sam le Well Depth Descriptions of Materials PID <br /> Constru LrrHO <br /> 7 e No. Count Time Recov. ct. Scale COLUMN and Conditions PPM <br /> _ No samples collected 0'-40'bgs <br /> 4 0 <br /> ----------------------------------------------------------------------------------------------------------------- <br /> - 10:58 100 4 1 SP SAND,brown,7-10%fines,fine grained,wet,medium dense <br /> 4 2 <br /> 12 _ SAND,as above,to 42.5' <br /> 12 11:02 100 4 3 ML SILT,light brown with white caliche,dry,-stiff - <br /> -------------------------20 ---------------- -------- ----------------------------------------- <br /> 4 4 <br /> -- -------- - 11:0 6 -- -9U, <br /> - - ----- - -- - - - --- ----------------------------------------------------- <br /> 40 11:06 60 _ ML SILT,brown,0-8%fine grained sand,wet,stiff <br /> 50 4 5 <br /> __ 4 6 <br /> 31 11:1170 _ ML SILT,light brown,trace white caliche,dry,very stiff <br /> 50 4 7 <br /> 4 8 <br /> 28 11:17 70 4 9 ML SILT,light brown_trace white caliche_law percentage of clay 48'-48.3', <br /> ------- --------------- ---- ------------ — --------- --------------------- ---------------------- <br /> 50 _ dry,very stiff <br /> 5 0 <br /> 11:21 100 5 1 SM SILTY SAND,brown,15-20%fines,fine_grained:wet <br /> ------- ---- -- ---- - - - - -- — — - - ---- - ------------ - ----------------------------- <br /> -- <br /> 5 2 <br /> - - -- - - - — - - - ------- - - - ----------------------------------------------------------- <br /> ------ ---13 11:25 --100--:25 100--- _ 5 3 SP SAND fine grained, 10.15%°fines,wet,medium dense <br /> 20 -------------------------------- <br /> ---------------------- -------- --- — <br /> �� _ <br /> -------------------------------- 5 4---------------- — -------------------------------------------------------------------------------------------------------------- <br /> ------ ------------------------------------------- -- -------------------------------------------------------------------•------------------------------------------- <br /> Comments:No samples collected 0'-40'bgs.#2112 sand used forfllter pack. <br /> Sampled to 53.5',drilled to 53.5'and completed well. <br />