3800 RIVERFRONT BLVD Geotech Report 2023-05-04

DRILLING COMPANY: Holocene Drilling DATE STARTED: 11/6/2018 DRILLING METHOD: CME 830 Tracked Rig,HSA&Mud Rotary DATE COMPLETED: 11/6/2018 SAMPLING METHOD: SPT with Autohammer LOGGED BY: B.Thurber LOCATION: See Figure 2 SURFACE ELEVATION: 31.0 ±feet `n m z^ w Standard Penetration Test U a z 1- w w .< (140 lb.weight,30"drop) z p cn .5 p A Blows per foot O i 0 N J J a' Z W 3 >^ Li.1 15 o—'��- CO DESCRIPTION can can o-. O 0 CC w 0 10 20 30 40 50 0 SM — 30 - Dense,olive brown and olive gray(layered),silty,gravelly S-1 20-22-20 - SAND,moist. - (FILL) A - Medium dense,olive brown over olive gray,gravelly,silty X S-2 12-11-12 • SAND,moist.Hint of Refuse in cuttings between 5 and 10. — 25 • 1 Mediun dense,olive brown,silty,gravelly,SAND,moist. N S-3 10-11-16 -- 20 15— - Medium dense,olive brown and olive gray,slightly gravelly, y II S-4 7-9-16 silty SAND,moist.Scattered partly decomposed organics. — 15 20— A - "Medium dense",REFUSE:paper,plastic,trace glass.-50% ® S-5 7-8-8 - rottable. — 10 (REFUSE)- - Groundwater encountered at 22'. - r 25— A - "Dense",REFUSE:wood,trace glass,trace plastic.No soil. ® S-6 16-19-20 - -95%rottable. — 5 Thin black slurry,no sheen.Slight creosote odor. 30— 0 20 40 60 80 100 Water Content(%) Plastic Limit I----11 - 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. A BORING: GM1GEOTECHNICAL ENGINEERING REPORT BH-36 RIVERFRONT BOULEVARD HWAGEOSCIENCES INC. EVERETT, WASHINGTON PAGE: 1 of 3 PROJECT NO.: 2015-061 FIGURE: A-2 BORING-DSM 2015-061.GPJ 12/10/18