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01/31/2008 15:25 FAX 5108363036 GEOSYNTEC-OAK 10 003 <br /> is <br /> !'L <br /> r: <br /> Geosyntec 475 14th Street,Suite 400 LOG OF Boring/W611 MW-7 <br /> Oakland,California 94612 <br /> Telephone:510.836.3034 Sheet 1 of 2 <br /> consultants Fax:510.836.3036 <br /> Project: WFS-Vernalis JJ' <br /> Location: 35100 S. Hwy 33,Vernalis,CA Project Nurr ber: WRO949,NERF <br /> Start Date and Time 8128/07-8:55 Finish Date and Time 8128107.13:00 Total Depth r <br /> Drilled(feet bgs) 44.5 <br /> Drilling Hollow Stem Auger Drilling GreggDrilling&Testing Ground Surface g3 57 <br /> Method reggr <br /> Contractor Elevation(feet MSL) <br /> Drill Rig Marl M-11 Sampling SPT Top of PVC Casing 4 5.95 <br /> Method Elevation(feet MSL) <br /> Groundwater 28 ft bgs Hammer percussion/1401b.-30 in,drop Logger er N.Mullau h 2eviewer J.Fortuna <br /> Observations Data g <br /> Coordinate N 2054159.85 E 6333068.44 Remarks <br /> Location <br /> a <br /> m WELL CONSTRGICTION DIAGRAM <br /> C <br /> 0 o Locking Cover <br /> N E MATERIAL DESCRIPTION <br /> > Q, a' N L > a t Watertight Cap <br /> lL w? O wE o_c CL <br /> 0 p 6-irch steel stovepipe well vault <br /> v1 m co rY n. C7 � <br /> 0 LEAN CLAY(CL),Dark yellowish brown(10YR 416), " <br /> moist, 100%fines,medium plasticity,medium stiff. 'Annular Seal:Neat cement <br /> r0-1 ft bgs) <br /> ole Diameter: 8 inches <br /> 90 ,,(0-44.5 ft bgs) <br /> ii <br /> 5 l <br /> 313/6 100 0.0 roul:Portland Cement <br /> 'f1-18 ft bgs) <br /> 6 <br /> d <br /> 85 iser. 2-inch-dia. <br /> 1/112 100 0.0 Schedule 40 PVC blank <br /> becomes soft @ 9 feet bgs. ,.asing(0-24 ft bgs) <br /> 10 1 <br /> 2 <br /> o I? <br /> N } <br /> ? 80 <br /> 3!515 100 0.0 SANDY LEAN CLAY(CL),Dark yellowish brown(10YR <br /> 416),moist,60 / lean clay,40%fine sand,low r <br /> 15 plasticity,medium stiff,trace gravels-subangular up to r <br /> a 1/2 inch. <br /> a. <br /> co r <br /> rn 1 <br /> & `I <br /> 3 <br /> 0 75 Beal: Medium bentonite <br /> -o chips(18-21 ft bgs) <br /> a <br /> w 20 WELL GRADED SAND WITH CLAY AND GRAVEL <br /> ;. <br /> [4/5/8 <br /> 80 0.0 (SW-SC),Brown(10YR 4/3),moist,75%fine to medium <br /> -------------- <br /> z sand, 15%gravel-up to 1/2 inch subangular to <br /> o' subround,10%fine lean clay,medium dense. - f' <br /> a 100 0.0 =- <br /> �i SILT(ML},Dark yellowish brown(10YR 4/4),moist, _- - l <br /> LU 1005 fines,low plasticity,very stiff. - - �3and Pack: Monterey#3 <br /> � 70 _ - sand sand(21-44.5 ft bgs) <br /> m = _ <br /> becomes medium <br /> 25 -_ <br /> 100 0.0 z <br /> LEAN CLAY WITH SAND(CL),Dark yellowish brown0 1 o0 0.0 (10YR 4/6) moist,80%lean clay,stiff,20%fine sand, <br /> 4b 6575 0.0 ' POORLY GRADED SAND WITH CLAY(SP-SC),Dark = - <br /> ? yellowish brown(10YR 3/4),wet,80%fine sand,10% _ _ <br /> lean clay,10%gravel up to 112 inch subangular to - <br /> 30 <br /> 'a <br /> M <br /> i. <br /> 4 <br /> h <br /> l' <br />