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DRILLING COMPANY: Holocene Drilling DATE STARTED: 11/6/2018 \ I <br /> DRILLING METHOD: Dietrich D-50 Turbo,HSA&Mud Rotary DATE COMPLETED: 11/6/2018 <br /> SAMPLING METHOD: SPT with Autohammer LOGGED BY: A.Ong <br /> LOCATION: See Figure 2 SURFACE ELEVATION: 37.8 ±feet <br /> I <br /> g Standard Penetration Test <br /> U a 2 Q aa, co H <br /> L ¢ (140 lb.weight,30"drop) <br /> p Z cn .s H p ♦ Blows per foot O <br /> N w w w � <br /> i 0 J -i 0:� Ce Z ~ <br /> 3 w >^ <br /> CL wai >- 0 < < w° I- CC -Im <br /> o CO D DESCRIPTION CI) (I) a 0 0 10 20 30 40 50 w w°'' <br /> 0 ML Soft,brown mud.Gravelly drilling at surface. <br /> - SM - <br /> (FILL) <br /> I <br /> Dense to very dense,dark olive brown,medium to coarse ® S-1 5-14-35 A- 35 <br /> SAND with SILT at moist top surface,fine gravels in dry silty <br /> - fine to medium SAND at and below 6 inches.Fine gravel,fine I` <br /> to medium sand,and broken concrete wedged in sampler tip.5 Very dense,olive brown,slightly fine to medium sandy SILT, S-2 11-27-33 ���_ <br /> moist. Broken gravel wedged in sampler tip. - <br /> — 30 <br /> 10— A - <br /> @ S-3A 12-14-9. Medium dense,dark gray to olive brown,slightly gravelly, <br /> - slightly silty,fine to medium SAND and slightly sandy SILT, S-3B - <br /> moist.Scattered wood fragments.Bottom 4 inches slightly _ <br /> - gravelly,silty coarse SAND. <br /> — 25 <br /> 15— • • ` <br /> REFUSE contact at about 15 feet. ® S-4 4-5-5 <br /> I <br /> Poor recovery,loose REFUSE,very moist. <br /> -40%wood <br /> I <br /> -10%glass — 20 <br /> _ -50%plastic sheeting <br /> 20— (REFUSE) 2 A <br /> "Medium dense",REFUSE,moist.Water encountered at 20. S-5 7-9-13I <br /> _ <br /> -40%wood,burnt _ <br /> - -50%paper <br /> -10%broken glass and plastic 15 <br /> 25— A - <br /> "Medium dense",brown,REFUSE,wet.Mixed wood and ® S-6 5-12-12 <br /> - plastic with some coarse sand.Broken glass and wood I- <br /> wedged in sampler tip.Poor recovery. <br /> -90-95%wood <br /> — 10 <br /> -5-10%plastic pieces and sheeting <br /> 30 A 1- <br /> - <br /> 0 20 40 60 80 100 <br /> Water Content(%) I <br /> Plastic Limit I 1,-- 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 /> and therefore may not necessarily be indicative of other times and/or locations. <br /> O <br /> GEOTECHNICAL ENGINEERING REPORT BORING: <br /> M <br /> RIVERFRONT BOULEVARD BH-42 <br /> HWAGEOSCIENCES INC. EVERETT, WASHINGTON PAGE: 1 of 3 <br /> PROJECT NO.: 2015-061 FIGURE: A-8 II <br /> BORING-DSM 2015-061.GPJ 12/10/18 <br />