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' — YvF-LL �uNST -- <br /> 1500 Newelf Avenue, Suite 800 RUCTION REC <br /> Walnut Creek, California 94596-3569 WELL 1Vl ORS <br /> Tei: (925) 943-3034 Fax: ( 25)943-2366 Sheet W-4 <br /> y eet 1 of 1 <br /> Project Location: <br /> Vernalis, Califo Project: Shell / Western Farm Service <br /> = ' Start Date 2/23/98 Project Number: <br /> Finish Date 2/23/98 WE610$_\ <br /> ',Drilling HopoW-Stem Auger Drilling DriTotal Depth <br /> Method Drilled(feet BGS) 45.0 <br /> Drill Contractor Gregg Drilling Ground Surface <br /> Rig Mobile B-61 Sampling Elevation(feet MSL} <br /> Method 2-inch-ID Not available <br /> Borehole split spoon Top of Casing <br /> biameter 8 inches Hammer Elevation(feet MSL) 104.21 <br /> Coordinates See survey data Data 140 lbs/30-inch drop Logger DEW <br /> % . Remarks Reviewer <br /> 4-1/4-in.-dia.auger pilot hole for sampling,reamed to$in, for well in sa <br /> MATERIAL DESCRIPTION WELL CO <br /> �� DIAGRAN <br /> (= E o 0. Locking Cap <br /> Q t <br /> 0 m w Watertight Cap <br /> Protective Casing <br /> Gravel at surface CD <br /> Light brown CLAY,some roots s <br /> stiff,moist oft to medium x Pad <br /> 3-2-4(6) <br /> Hole Diameter:8 in. <br /> ------------•--- ------------ <br /> � <br /> 5-6.1 <br /> Brown, well- raded SAND <br /> 8 9 with ravel to <br /> 10 (24) 1-1/4 inches,medium dense,moist(SW) Backfill: cemen- <br /> w•i. IPID in breathingzone– .•,.::_ grout f0-76 ft t bentonit <br /> c�.r <br /> –0.0 ppm) �! ) <br /> ;:.a.. <br /> 7-9-11 <br /> (20) Light brown,silt 7 ,`/ Casing:2-in.Schedule 4C <br /> 15– PVC 10-20.5 ftl <br /> strff to ver y CLAY,occasional coarse sand, <br /> y stiff,slightly moist{CL) <br /> „p <br /> u 16.0 <br /> ES' 20 {54) Brownish gray, we SAND with silt and 78.0 Seal:Cetco volclaY pellets <br /> subangular to subrounded -1 (16-18 ft) <br /> dense,slightly moist(SW.SM)vel to 1-112 inches, �'; - <br /> K 20.5 _ <br /> Sand Pack:#2/16 filter sar <br /> -45f18Increasing sift content <br /> ft) <br /> (201 :.._.:: <br /> r>: 25 - _ _ _- <br /> Light brown, sand SILT, - <br /> moist IML) Y medium dense,slightly <br /> __ <br /> - 7-38.30 _ __._ _ [PID in breathing zone <br /> c'• 30 (68) Brownish gray, clayey5--- ------ -'0 -ppmI .- <br /> subangular gravel t -1/2N�D,well-graded, with <br /> i <br /> dense,moist(SC} hes,dense to very f' <br /> Screen:2-in.Schedule 40 <br /> -in.slot <br /> (20.5-44.5 ft) <br /> 12.20.24 <br /> 4" 35 (44) lens of light brown clayey SILT - - <br /> r <br /> (ML) <br /> Light brown, fine SAND with silt,dense,wet <br /> 10.18-22 (SPM) _ <br /> 40 {40} r--Sand grades coarse, =- <br /> i e,with grave! _ <br /> rr:. <br /> <; <br /> - <br /> `. :; 12-12-)5 ;—Becomes medium dense <br /> 45 (27} - _ <br /> Bottom of borin at 45.0 feet. w - <br /> f`, 44.5 <br /> Bottom Cap:threaded AVC <br /> v <br />