HomeMy WebLinkAbout7945.04 E 2023 0622Earth Solutions NWLLC
15365 NE 90th Street, Suite 100
Redmond, WA 98052
Main (425) 449-4704 | Fax (425) 449-4711
www.esnw.com
FIELD REPORT
Project No. 7945.04 Page 1 of 3 Report ID 7945.04 E 2023 0622
Date Thu 6/22/2023 Weather 70°F Cloudy
Arrival/Departure Time(s) 8:30AM; 9AM Travel Time (hr) 0.75
Project Name Canopy Property
Location 4130 Lincoln Ave NE, Renton
ESNW Rep. & Phone Willem Scherwin | 206 793 8569
Client Info/Contact Century Communities | Stacia Bloom
General Contractor Info/Contact
Contractor #2 Info/Contact
Reviewed By LAC
Initials/Date
RAC
Initials/Date Field Supervisor Project Manager
Limitations: The presence of our field representative at the site is to provide our client with a source of professional advice, opinions, and recommendations based upon the field representative’s observations and testing of the contractor’s work. Our services do not include supervision or direction of the contractor, their employees, or agents. Geotechnical recommendations for
obtaining project objectives may be made by our representatives; however, direction of the actual work should come from the owner or contractor, as appropriate. The contractor is responsible
for complying with the contract documents at all times, regardless of the presence of our field representative. Jobsite safety, including compliance with all applicable state or federal regulations,
is the sole responsibility of the contractor. The observations, recommendations, and conclusions provided in this field report are preliminary until reviewed by the ESNW project manager.
ESNW rep was onsite to observe Redi-Rock wall foundation keyway and backfill and lagging of shoring
wall.
Redi Rock Wall Observations
While onsite, ESNW rep observed the contractor cutting a wall keyway approximately 6 feet in width into
native brown silty sand with gravel. ESNW rep used a ½” steel T-probe to probe the keyway and
observed it to be very dense, firm, unyielding, and suitable for the construction of the proposed wall.
ESNW rep observed the contractor placing Redi-Rock wall blocks along the keyway that has been
capped with 5/8th inch minus. Rep observed the contractor had placed a 4” corugated drainage pipe
behind the wall and backfilled it with pea gravel. 10XT Miramax Geogrid was placed approximately every
two blocks. 5/8th inch clean was placed approximately 2’ behind the wall blocks. Imported gravel barrow
was placed in 12” lifts behind the wall and compacted with a diesel sled compactor. ESNW rep took
compaction tests and observed adequate compaction of at least 95% of the modified proctor at the
tested locations. Please see attached site plan illustrating wall construction area, as well as table below.
Lagging Observation
ESNW rep observed the contractor install timber lagging. The contractor excavated an approximate 4-5’
lift that was observed to be stable at the time of observation. The contractor placed 4”x12” tempered
timber in the soldier pile bays. The lagging was secured to the soldier piles via welded nails to the pile.
Test
Number Test Location Elevation Reference
Proctor
Maximum
Dry Density
(pcf)
Test
Moisture
(%)
Test
Dry Density
(pcf)
% of MDD
147 Redi-Rock Wall Backfill SG 8 137.8 7.9 130.7 95
Report ID 7945.04 E 2023 0622 Page 2 of 3
Earth Solutions NW, LLC
Wall Construction
Keyway/Backfill
147
Lagging
Report ID 7945.04 E 2023 0622 Page 3 of 3
Earth Solutions NW, LLC