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1500 Newell Avenue, v11-11_L LuIVSTRUCTIO ' <br /> Walnut Creek,Californ au945g6�g569 N RECORD <br /> Tel: (925}943-3034 Fax: (925)943-2366 WELL MW-4 <br /> Sheet 1 of 1 <br /> Project Location: Pro ect: <br /> Vernalis, California, Sher / Western Farm Service <br /> Start Date 2123/98 ~` <br /> Finish Date -- Project Number, <br /> Drilling 2/23/98 VVE6108.1r <br /> a. Method Hollow-Stem Auger DriAing TotalDrilleDepth -� <br /> Drill Contractor Gregg Drilling (feet BGS) 45.0 <br /> Rig Mobile B-61 Ground Surface <br /> Sampling Elevation(feet MSL <br /> Borehole Method` ` 2-inch-tD split spoon To ) Not available <br /> Diameter 8 inchesCasing <br /> Hammer ---�- Elevation(feet MSL) 104.21 <br /> Coordinates See surve Data 140 lbs/30-inch drop <br /> y data Remarks <br /> i° 4-7/4-in.-dia. Logger <br /> DEW <br /> Reviewerger pilot hole CRK <br /> or sampling, <br /> reamed to 8 in,for well f <br /> nsta <br /> ad ' DESCRIPTION WELL CONSTRUCTION <br /> MATERIAL <br /> E 3 Q I- DIAGRAN <br /> m o._o- v Locking Cap <br /> to in'rn� L <br /> 0 m CL Watertight Cap <br /> �'Gravef ai surface C7 Protective Casing <br /> light brown CLAY,some roots,soft to medium Pad <br /> •, st,If,moist(CL) <br /> 3-2-4 <br /> 5 (6) <br /> Hole Diameter: <br /> 8 in. <br /> tN <br /> 5-6.18 Brown,well•graded SAND <br /> 10 (24) 1 1/4 inches,medium dense�tmoistv(SW} <br /> Backfill:cement <br /> IPID in breathing zone=0.0 ppm} *; ;; grout(0-76 -bentonit <br /> ftl <br /> a.. <br /> 15 (20) Light browverY stitfn,sit[ �;_! Casingg:2-in.Schedule 4C <br /> stiff to y CLAY,occasional coarse sand, PVC(0-20.5 ft) <br /> ;. ,slightly moist(CL) <br /> ttk'' <br /> 16.0 <br /> r G`' <br /> 18-24-30 -- -------- <br /> Seal:Ceuo volcla <br /> r 20 (54) Bubanish gray, b,o graded SAND with silt and ---- 18.0 <br /> pular to subrounded gravel to 1-1/2 inches, 176-18 ft) y pellets <br /> dense,slightly moist(SW SM) - _ - <br /> *: - <br /> 20.5 ,:s _ _ <br /> 7., - <br /> Sand <br /> Pack:+ 2/16 filter ser <br /> t) <br /> 20-10.10 ;—Increasing sift content - <br /> 25 (20) <br /> Light brown, sandy SILT,medium d <br /> moist(ML) ense,slightly = - <br /> _ --- <br /> Q <br /> •38.30 IND in breathing <br /> rr: 30 I681 Bubwnfsh gra----------- <br /> -------------------zone= PPm} . <br /> Y.clayey SAND,well-graded,with <br /> angular gravel to 1-i/2 inches,dense to <br /> t> dense,moist(SCJ very <br /> Screen:2-in.Schedule 40 <br /> PVC,0.01-in.slot <br /> 12-20.24 {20.5-44.5 ft} <br /> 35 (44) Lens of light brown, clayey - <br /> Y Y SILT(MLI <br /> Light brown, fine SAND - <br /> _'. 10-16-22 (SP-SM) with sift,dense,wet <br /> { 4p l40) - <br /> {`Sand grades coarse, withr <br /> g avel <br /> }; _ - <br /> ss: 12-12-15 ,`Becomes medium d <br /> 45 {27) dense .: <br /> Bottom of borin I at 45.0 feet. I� <br /> 44.5 - - <br /> Bottom Cap:threaded PVC <br />