REVIEWED RESUB 2-BLD2024-0257+Geotechnical_Report+9.6.2024_6.27.26_PM+4486165NELSON GEOTECHNICAL
ASSOCIATES. INC.
MEMORANDUM
DATE: July 2, 2024
TO: Daniel Bockretsion
VIA Email: danielbockretsion@gmail.com
FROM: Khaled M. Shawish, PE
Daniel J. O'Dell
RE: Geotechnical Engineering Comment Response
Bockretsion Residential Redevelopment
1520 — 101h Place North
Edmonds, Washington
NGA File No. 1497924
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17311-1351h Ave. N.E. Suite A-500
Woodinville, WA 98072
(425) 486-1669
www.nelsongeotech.com
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This memo presents our response to a review comment raised by the City of Edmonds regarding the
proposed residential redevelopment project located at 1520-101h Place North in Edmonds, Washington.
We previously prepared a geotechnical report for the proposed residential redevelopment dated March
1, 2024. We understand that a concern has been raised regarding the groundwater table depth. The
comment was provided to us in a letter from the City of Edmonds, dated May 10, 2024.
Below, we address the concern in the letter, followed by our response.
CITY OF EDMONDS COMMENT AND OUR RESPONSE
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"As the drywell bottoms are proposed at 4' below grade, please provide a geotechnical memo
that the groundwater table is at a depth of at least 7'."
Geotechnical Engineering Comment Response
Bockretsion Residential Redevelopment
Edmonds, Washington
NGA File No. 1497924
July 2, 2024
Page 2
Our log of exploration in our geotechnical report investigated soils from a depth of 3.5 to 10.0 feet below
the existing ground surface February 15, 2024. All explorations did not encounter groundwater seepage.
In Test Pit One, our deepest exploration of 10.0 feet, we encountered 8 feet of gray, fine to coarse sand
with various amounts of gravel and roots which we interpreted as unweathered native recessional
outwash. Due to the absence of iron -oxide staining and/or weathering causing a discoloration of soils for
8-feet in our deepest exploration test pit, generally no saturation of soils, and explorations completed
between the months of October and April, which is dictated as the wet season, we would anticipate the
groundwater level to be deeper than 10.0 feet.
...
NELSON GEOTECHNICAL ASSOCIATES, INC.