HomeMy WebLinkAbout7945.04 E 2023 0825Earth 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 0825
Date Fri 8/25/2023 Weather 70°F Clear
Arrival/Departure Time(s) 10:30AM; 11AM Travel Time (hr) 0.75
Project Name Canopy Property
Location 413 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 the Redi Rock wall keyway and drainage, as well as vault backfill
Redi Rock Wall Observations
ESNW rep was onsite to observe wall keyway. ESNW rep observed the contractor had excavated a
keyway approximately 5 feet in width into native grey silt 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 proposed Redi
Rock wall. ESNW rep also observed drainpipe along the back of the wall along the base. An 18” column
of drain rock was placed directly behind the wall blocks to the top of wall.
Vault Backfill
ESNW rep was onsite to observe and test the backfill of the stormwater vault onsite. ESNW rep
observed the contractor spreading the soil out on and around the vault using a dozer. The native soil was
then compacted with good effort using a medium sized hoe pack. ESNW rep took compaction tests and
observed adequate compaction of at least 95% of the modified proctor at the tested locations. Please
see map and table below.
Test
Number Test Location Elevation Reference
Proctor
Maximum
Dry Density (pcf)
Test
Moisture (%)
Test
Dry Density (pcf) % of MDD
181 Vault Backfill -4 9 128.5 12.8 123.1 96
182 Vault Backfill -2 9 128.5 13.0 122.5 95
183 Vault Backfill SG 9 128.5 13.1 122.5 95
Report ID 7945.04 E 2023 0825 Page 2 of 3
Earth Solutions NW, LLC
Report ID 7945.04 E 2023 0825 Page 3 of 3
Earth Solutions NW, LLC
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