3800 RIVERFRONT BLVD Geotech Report 2023-05-04

DRILLING COMPANY: Holocene Drilling DATE STARTED: 11/5/2018 DRILLING METHOD: Dietrich D-50 Turbo,HSA&Mud Rotary DATE COMPLETED: 11/5/2018 SAMPLING METHOD: SPT with Autohammer LOGGED BY: A.York LOCATION: See Figure 2 co w N w U w Standard Penetration Test I m Z w U a Ti- Q (140 lb.weight,30"drop) Z J O w w .s o A Blows per foot O (� J J 50 Z Q N ►_- 0 cn o- d 3 w > > II W >- U) Q Q w° F=- cr J 5 o cn DESCRIPTION U) U) a- 0 0 0 10 20 30 40 50 w" 0 ML _ Medium dense,dark olive brown,slightly gravelly,fine to El S-1 2-3-9 A medium sandy,SILT,moist. (FILL) 5 Medium dense,dark olive brown,slightly gravelly,fine to EI S-2 0-18-21 A - medium sandy,SILT,moist. 10 Medium dense,dark olive brown,slightly gravelly,fine to ® S-3 1-5-13 A - medium sandy,SILT,moist.With lenses of dark brown organic silt with rootlets. 15 Loose,brown to greyish brown,medium to fine sandy,SILT, ® S-4 2-3-6 - moist.With partly decomposed woody fragments in the bottom 2".-5-10%rottable. I 20 "Medium dense",dark grey,REFUSE:partly decomposed ® S-5 5-12-8 wood,paper,aluminum,latex pieces,and some brown,fine to medium SAND. -90%rottable. - (REFUSE) I - 25 A Poor recovery.Medium dense,brown,fine sandy,SILT,wet. ® S-6 21-10-5 30— A I 0 20 40 60 80 100 Water Content(%) Plastic Limit I--111--I Liquid Limit NOTE: This log of subsurface conditions applies only at the specified location and on the date indicated Natural Water Content and therefore may not necessarily be indicative of other times and/or locations. 1 BORING: III OM GEOTECHNICAL ENGINEERING REPORT B BORING: RIVERFRONT BOULEVARD HWAGEOSCIENCES INC. EVERETT, WASHINGTON PAGE: 1 of 3 I PROJECT NO.: 2015-061 FIGURE: A-5 BORING-DSM 2015-061.GPJ 12/10/18