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i <br /> SOIL BORING/WELL CONSTRUCTION LOG Boring No. MW-8 Sheet: 2 of 6 <br /> Client Arco 443 Date December 2 2008 completed February 11 2009 <br /> Address 2478 East Oak Street Drilling Co. Woodward Drilling rig type: BK-81 _ <br /> Stockton,CA Driller Dave Van Ste n <br /> Project No. E443-01 Method Hollow Stem Auger Hole Diameter: 18110 Inches <br /> Logged By: Allan Duddin ,Scott Bittin er Sampler: 18 or 24 inch longx 2 inch diameters lits oon <br /> I <br /> Well Pack sand: 97 ft.to 117 ft. Well Construction Casing Material: Schedule 40 PVC Screen Interval: 103 to 113 ft. <br /> bent.: 92 ft.to 97 ft. Casing Diameter:2 in. Screen Slot Size: 0.020-in. ail <br /> grout: 0 ft.to 92 ft. Depth to GW: Ofirst encountered:55 feet b s -Static: <br /> PID <br /> Sam Is Blow Sam le wait Depth Lah01091C Deacd eons of Materials and Conditions PPM <br /> T a No. Count Time Rocov.- Details Scale Column <br /> 11 ' <br /> 12 21 ML Silt.ML:dark yellowish brown(10YR 4/4).non_plaslic,moist,stiff_100%sil-------- 0 <br /> S MW 8-21 12 0852 100% ' <br /> 22 ________________________.---________-------- <br /> ------------------ <br /> - <br /> .___ :. <br /> ( 23 -------._------------.------------------ -------- <br /> ------ <br /> 24 ---------._--------------------___-.-___..-_-_------_--------------_-------.---------- <br /> ------ <br /> ._._ <br /> S — <br /> i25 _--__-__.-__-________.______________________._____._._____. <br /> 12 26 Same as above. .__-___-_________-_______---o_ <br /> 12 -_________________________-___--_-_____ <br /> S MW-8-28 13 0859 100% - <br /> .,' 27 ----------_-------------------------____..----------------- <br /> ------------------- <br /> `.' 28 _-______._______-____---_____.__________.__- <br /> 29 -----------_._---------_----------------------------------------------------------------------------________ <br /> 0_ -_____-- <br /> 30 ______._-___.______________________._._-.__--__________-__________.._______._-___.._____-_- <br /> __________________ ____ <br /> 11 31 Silt,ML,dark grayish brown(2.5Y 472)_non_plastic,wet_very stiff_ 100%si8_ _ _0_-- I'i <br /> S MW-8-31 11 0903 100 <br /> 33 _-.________________.--____._.------- <br /> -- <br /> 34 -------------------------_____.__--_____------------------------------------------------.---------_______ <br /> 10 <br /> 11 36 Sandy Silt,ML,dark grayish brown(2.5Y 412)_non-plastic,wet to moist very__ _0 <br /> MW-&38 13 0911 <br /> -- ------- -- ------ --"""'100"- c stiff. 70%silt,30%fine sand. 'I <br /> S <br /> ___ <br /> J � , <br /> — CL <br /> 40 <br /> Inner Wall of 18"HSA string <br /> Steel Conductor Casing Comments: <br /> Well Casing <br /> Recovery <br /> Sample <br /> aAL GF��or �r�s <br /> O GfN ENVIRONMENTAL, INC. <br /> ep en J.Carter <br /> No. 5577 <br /> Q <br /> CP <br /> T9�OF CAGIF�Q�` <br />