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' ' DRILLING COMPANY: Holocene Drilling DATE STARTED: 11/6/2018 1 <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 /> N w <br /> w Z w Standard Penetration Test <br /> U a t ILL"' <br /> (140 lb.weight,30"drop) Z <br /> J O I- Z cn•.c H 6 £ Blows per foot O <br /> N w w w � Z F- <br /> o: <br /> ww cc <br /> can a O w <br /> o cn DESCRIPTION 0 10 A 20 30 40 50 <br /> 30— "Medium dense",black,REFUSE,gooey and wet.Large ® S-7 7-8-6 <br /> - chunk of wood and plastic in sampler tip.Gravelly drilling all - <br /> thorugh refuse.Poor recovery. - <br /> -5-10%decomposable slurry,wood — 5 <br /> - -90-95%miscellaneous scrap metal,copper wiring,inorganic <br /> - fibers,glass - <br /> 35— "Medium dense",black,REFUSE,wet. Poor recovery. ® S-8 7-11-10 A <br /> -60%mixed plastic - <br /> -40%wood <br /> — 0 <br /> `�' : PT <br /> 40— 4 .0'', <br /> No recovery.Black slurry residue in sampler,trace wood NR 4-5-5 <br /> - 0 , : fragments. - <br /> — -5 <br /> - `��' Soft,dark brown-black,highly decomposed organic <br /> 45— , �. SILT/PEAT,wet. With scattered small wood fragments.. � - <br /> Likely top of alluvium/bottom of Refuse.Large pieces of XIS-9 12-5-6 <br /> - <br /> rubber in sampler tip. <br /> I, 0/, (ALLUVIUM) - <br /> 6 inches of woody debris over:Medium dense to dense,dark 10A 12-15-13 — -10 <br /> ,L, 0 i, blackish-brown to gray,silty,fine to coarse SAND,wet. with S-10B <br /> - 0,, , small rounded gravels near top,wet.Switched to mud rotary. - <br /> I SP Dark gray,dean medium-coarse SAND with fine subrounded N S-11 - <br /> gravel,wet.Half recovery with California sampler;1 set of six <br /> 1-inch rings and 2 sets of two 6-inch rings. r <br /> / ....i.,:... (ADVANCE OUTWASH) — -15 <br /> Very dense,dark gray,clean medium to coarse SAND with S-12 15-24-26 <br /> - fine subrounded-rounded gravel. El - <br /> I _ — -20 <br /> 60 »r <br /> 0 20 40 60 80 100 <br /> 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 /> and therefore may not necessarily be indicative of other times and/or locations. <br /> J <br /> BORING: <br /> II MT GEOTECHNICAL ENGINEERING REPORT B <br /> BORING: <br /> RIVERFRONT BOULEVARD -42 <br /> HWAGEOSCIENCES INC EVERETT, WASHINGTON PAGE: 2 of 3 <br /> I PROJECT NO.: 2015-061 FIGURE: A-8 <br /> BORING-DSM 2015-061.GPJ 12/10/18 <br />