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'DRILLING COMPANY: Holocene Drilling LOCATION: Snohomish River,Three-Acre Park 1 <br /> DRILLING METHOD: HSA,Mobile B-59 on Barge DATE STARTED: 9/29/2011 <br /> SAMPLING METHOD: SPT w/Autohammer DATE COMPLETED: 9/29/2011 <br /> SURFACE ELEVATION: ±feet LOGGED BY: B.Thurber <br /> w <br /> m Z re <br /> w Standard Penetration Test <br /> U } Q (140 Ib.weight,30"drop) <br /> J 0 w w w.` p ♦Blows per foot <br /> _ Z <br /> o:� <br /> I a�, CO 2 U 2 2 z g = O a y <br /> w y >- cn Q Q w w„ <br /> o u> > DESCRIPTION Cl) i a s O O 0 10 20 30 40 50 0" <br /> 0— - SP 0 <br /> Loose,brownish-gray,clean,fine to coarse SAND,wet. ®S-1 4-2-1 GS - <br /> Trace fine gravel. <br /> (ALLUVIUM) - <br /> , ... —5 <br /> "Very dense, brownish-gray,clean,fine to coarse SAND, S-2 8-20-35 A_ <br /> wet. Appears to be heave,blow counts overstated. <br /> 10— —10 <br /> • <br /> _ "Very dense",gray,clean fine-gravelly,fine to coarse SAND, ®S-3 7-18-35 GS "AA_ <br /> wet. Three feet of heave before sampling;auger lifted and <br /> r•'' set back in place. 18 inches of heave over 6 inches intact <br /> sample;blow counts overstated. <br /> 15— —15 <br /> Medium dense to dense,gray,slightly silty,fine to medium S-4 12-15-14 - <br /> SAND,wet. Partly decomposed wood in tip. Approximately <br /> 6 inches of heave in sampler,after washing out heave with - <br /> tremmie pipe(also done for subsequent samples as <br /> 20— • • needed). —20 <br /> _ <br /> Dense,gray,clean,fine to medium SAND,wet. Trace,fine, S-5 11-13-17 GS A , ... _ <br /> sub angulargravel(one clast). 6-inches of slough. No <br /> - bedding. <br /> 25— • -25 <br /> Dense,gray,clean,fine to medium SAND,wet. Trace S-6 7-17-23 _ <br /> subangular,fine gravel. No bedding. <br /> I . . <br /> 30— —30 <br /> For a proper understanding of the nature of subsurface conditions, this 0 20 40 60 80 100 <br /> exploration log should be read in conjunction with the text of the Water Content(%) <br /> greotechnical report. Plastic Limit �--�� Liquid Limit <br /> NOTE: his log of subsurface conditions applies only at the specified location and on the date indicated Natural Water Content <br /> and therefore may not necessarily be indicative of other times and/or locations. <br /> J <br /> IPUBLIC 100AMENITIES BORING: <br /> 8-107 <br /> RIVERFRONT DEVELOPMENT <br /> HWAGEOSCIENCE$INC EVERETT, WASHINGTON PAGE: 1 of 2 <br /> PROJECT NO.: 2015-061 FIGURE: A-8 <br /> BORING 2007-087.GPJ 6/26/12 <br />