3800 RIVERFRONT BLVD Geotech Report 2023-05-04

DRILLING COMPANY: Holocene Drilling DATE STARTED: 11/7/2018 \ DRILLING METHOD: CME 830 Tracked Rig,HSA Mud Rotary DATE COMPLETED: 11/7/2018 SAMPLING METHOD: SPT with Autohammer LOGGED BY: B.Thurber LOCATION: See Figure 2 w Cl) w v a Standard Penetration Test m Z LU I U a L N Q (140 lb.weight,30"drop) Z J O W w e o Blows per foot 0 Q! I-.. COa CO s y w 8 >w Wy >- Cl) cc � y o cn Q Q W 2 H DESCRIPTION co Cl) a 2 0 0 10 20 30 40 50 w 715 6 inches of wood from 2018 fill and grading. - �.'.C (FILL) _ :Q Medium dense,olive brown to 3.5 inches,then dark yellow X S-1 3-7-19 . .• brown,gravelly,silty,fine to medium SAND,moist. Dense,olive brown,slightly gravelly,silty,fine to medium Ix S-2 5-17-24 - p.':�. SAND,moist. Refuse in cuttings below 7.5 feet. 10 "Medium dense",olive brown,slightly gravelly,silty SAND, ® S-3 10-7-5 A - moist.Wood in tip,about 2 inches. I - (REFUSE) I 15 Drove wood,poor recovery.Wood at 3 inches and below. ® S-4 7-7-4 Cuttings are plastic,brownish black organics. • II 20 REFUSE:Poor recovery.Drove wood.Cuttings are plastic, ® S-5 3-4-4 A - brown-black organics.Water encountered at 22 feet. / _ 25 REFUSE:"Medium dense",brownish black,wood with trace ® S-6 10-11-14 A plastic,fine gravels in olive brown silty sand.-80%rottable. Slight sheen and creosote-like odor. 30— 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. I BORING: I MT GEOTECHNICAL ENGINEERING REPORT B BORING: RIVERFRONT BOULEVARD HWAGEOSCIENcES INC EVERETT, WASHINGTON PAGE: 1 of 3 I PROJECT NO.: 2015-061 FIGURE: A-1 1 BORING-DSM 2015-061.GPJ 12/10/18