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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 /> w U Standard Penetration Test <br /> 11 -.it-I U } M , Q (140 lb.weight,30"drop) <br /> J O w w w e I- p ♦Blows per foot <br /> i So Z a:� <br /> I a� CO M U 2 M z 6 = O a� <br /> wy r to Q Q w$ I- wd <br /> o in- D DESCRIPTION U) U o_2 O 0 10 20 30 40 50 8 <br /> 30— —30 <br /> Dense,gray,clean,fine to medium SAND,wet. Trace S-7 8-12-18 _ <br /> coarse sand and fine,subangular gravel. No bedding. <br /> Sand grains balck white and green,trace yellow to reddish <br /> -Cascade provenance. <br /> 35— -- <br /> 35 <br /> • Dense,gray,clean to slightly silty,fine to medium SAND, S-8 17-23-20 , .. , .. .. .. _ <br /> ▪ wet. No bedding. Appears liquified,e.g.silt along sampler <br /> sides indicatesnon-plastic silt lenses. - <br /> Dense,gray,clean,fine to medium SAND,wet. Partly S-9 8-17-20 <br /> • decomposed wood on top and detrital partly decomposed <br /> wood in tip. _ <br /> 45— '45 <br /> ►�/- 10a 8-18-16 <br /> _ —- OL Very stiff,dark brown,fine PEAT to ORGANIC SILT,moist � _ <br /> - ML 1 to wet. "� 1obAL,Very stiff,greenish-gray,SILT,moist to wet. Fine,blocky ir <br /> structure. <br /> 50— —50 <br /> Boring terminated at 49 feet. <br /> - Abandoned with bentonite chips. - <br /> 55— . .............. 755 <br /> For a proper understanding of the nature of subsurface conditions,this 0 20 40 60 so 100 <br /> —60 <br /> exploration log should be read in conjunction with the text of the Water Content((Y0) <br /> geotechnical report. <br /> NOTE:-This log of subsurface conditions applies only at the specified location and on the date indicated Plastic Limit I--0-1 Liquid LimitNatural Water Content <br /> and therefore may not necessarily be indicative of other times and/or locations. <br /> 1 <br /> I BORING: <br /> PUBLIC AMENITIES B 07 <br /> 11= RIVERFRONT DEVELOPMENT <br /> I HWAGEOSCIENCES INC EVERETT, WASHINGTON PAGE: 2 of 2 <br /> PROJECT NO.: 2015-061 FIGURE: A-8 <br /> BORING 2007-087.GPJ 6/26/12 <br />