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DRILLING COMPANY: Holocene Drilling DATE STARTED: 11/5/2018 <br /> DRILLING METHOD: CME 830 Tracked Rig,HSA&Mud Rotary DATE COMPLETED: 11/5/2018 <br /> SAMPLING METHOD: SPT with Autohammer LOGGED BY: B.Thurber <br /> LOCATION: See Figure 2 <br /> cn w <br /> m z W Standard Penetration Test <br /> I v a z N w (140 lb.weight,30"drop) Z <br /> O co.S i_ p A Blows per foot O <br /> w w w� Z F- <br /> = 0 a) ii O o.y W 8 Q <br /> 0 <br /> 3 <br /> W y >- V) Q Q W 1- 0! J y <br /> CI DESCRIPTION cn cn a 0 0 10 20 30 40 50 Wtr- <br /> 30— "Medium dense",REFUSE:black coated wood fragments in ® S-7 11-11-9 A <br /> - SILT,wet.Black slurry.Poor recovery.-20%rottable. <br /> 35— "Loose",REFUSE:plastic sheeting and wood.Black slurry. ® S-8 2-2-4 <br /> - Poor recovery.-10-30%rottable. <br /> 40— "Loose",REFUSE:plastic and woody fragments. ® S-9 3-3-4 <br /> - Blackish-brown slurry.Poor recovery. -10-30%rottable. <br /> ML <br /> I 45— Stiff,olive gray,clayey SILT,moist.Plastic silt with lenses of S-10 3-4-6 <br /> - partly decomposed woody fragments and rootlets. <br /> - (ALLUVIUM) <br /> _ S-11 AL I • I <br /> OH Stiff,grayish brown,organic SILT,moist. <br /> LA-A1 <br /> 1 <br /> I <br /> ML <br /> 50— Loose,olive brown to olive gray,SILT,moist.Non-plastic,with S-12 2-3-5 <br /> trace woody organics,grades to silty,fine SAND,moist. <br /> 2"lens of clean,fine SAND at 51'. <br /> SP <br /> - ; SM <br /> 55— Dense,gray,slightly silty,fine SAND,wet.With lenses of silty, S-13 12-18-21 A <br /> fine SAND and clean,fine to medium SAND. <br /> - (ADVANCE OUTWASH) <br /> 60— • • • <br /> - <br /> 0 20 40 60 80 100 <br /> I Water Content(%) <br /> Plastic Limit I--• I Liquid Limit <br /> NOTE: This log of subsurface conditions applies only at the specified location and on the date indicated Natural Water Content <br /> I ` and therefore may not necessarily be indicative of other times and/or locations. <br /> BORING: <br /> 111 UM GEOTECHNICAL ENGINEERING REPORT B BORING: <br /> RIVERFRONT BOULEVARD -38 <br /> HWAGEOSCIENcES INC. EVERETT, WASHINGTON PAGE: 2 of 3 <br /> PROJECT NO.: 2015-061 FIGURE: A-4 <br /> BORING-DSM 2015-061.GPJ 12/10/18 <br />