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GROUND ZERO ANALYSIS LOG OF WELL MW4 <br /> PROJECT TUFF BOY TRAILERS LOCATION 5151 ALMONDWOOD DRIVE MANTECA CA PROJECT NO. 335 <br /> DATE DRILLED 01/22/01 LOGGED BY SEAN GARVEY REVIEWED BY JOHN P. LANE RG No. 6795 <br /> DRILLING COMPANY DRILLER KEVIN CROSS METHOD HOLLOW STEM AUGER <br /> BORE HOLE DIAMETER a IN DEPTH DRILLED _ 20 FL DEPTH TO WATER : INITIAL 6.5 FT STATIC _ 7.5 FT <br /> CASING TYPE PVC F480 DIAMETER _ 2 IN SCHEDULE 40 INTERVAL 0 FT TO 5 FT <br /> SCREEN TYPE FYC F480 _ DIAMETER _ 2 IN SLOT SIZE INTERVAL 5 FT TO 20 FT <br /> FILTER PACK TYPE INTERVAL 3 L TO 20 FT <br /> SURFACE SEAL TYPE CONCRETE FLUSH WELL BOX WITH BENTONITE INTERVAL _ 0 TO 3 FT <br /> COMMENTS•. AGE.-L OF_.,,-L_ <br /> WELL DEPTH fID U.S.C.U,S•C, DESCRIPTION <br /> DETAIL FT. PPI BLOWCOUNT LOG <br /> 2 0-8/9.5' WELL GRADED SAND (SW): 90-95% FN-CRS, A-SA, W GRDD <br /> SND; 5-109 FNS, LS, GRN, NPO, MST <br /> 4 <br /> 0 2 SW <br /> 3 <br /> 6 6 <br /> 6 9.5-11/14.5` WELL GRADED SAND (SW): >95% FN-CRS, A-SR, W GRDD <br /> SND; <5R FNS, L5, BRN, NPO, WET <br /> TBT-MW4-10' <br /> 10 3 <br /> 0 3 SW <br /> 3 <br /> _ 12 11/11.5-15/19.5' SILTY CLAY (CL/ML): 10-15% FN-M, A-SA, W GRDD SND; <br /> 85-909 FNS, L-M DRY STRNGTH, L-M PLST, HRD, ERN, <br /> NPO, WET <br /> 14 <br /> 17 <br /> 0 18 CL/ML <br /> 16 21 <br /> 16/19.5-21' SILT (ML): <5% FN, A SNO; >95% FNS, N DRY <br /> STRNGTH, R DLTNCY, L TGHNSS, N PLST, V STIFF, ERN, <br /> 18 NPO, WET <br /> TBT-MW4-20` <br /> '/ <br /> ==L-20— 0 Ie ML <br /> 19 <br /> 22- <br /> -24- <br /> -26- <br /> 28— <br /> _30— <br /> 26 <br /> 28 <br /> 3D �¢ED GFOI <br /> w� o� <br /> 32 Q j0HPj p in <br /> LAINE -+ <br /> 34 NO. 6795 <br /> 36 <br /> Q` <br /> OF CAL:�4 <br /> 38 <br /> an <br />