HomeMy WebLinkAboutObservation of Excavation1(+A Kumar &Associates, Inc.® 5020 County Road 154
Geotechnical and Materials Engineers Glenwood Springs, CO 81601
01
and Environmental Scientists phone: (970) 945 7988
email: kaglenwood@kumarusa.com
Z� www.kumarusa.com
An Employee Qwmd Company
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
June 18, 2025
Danae Morris
6601 214 Road
New Castle, Colorado 81647
danaemorris6a _gmail.com Project No. 25-7-169
Subject: Observation of Excavation, Proposed Residence, 0083 County Road 105,
Garfield County, Colorado
Dear Danae:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on June 18, 2025 to evaluate the soils exposed for foundation support. The findings
of our observations and recommendations for the foundation design are presented in this report.
We previously conducted a subsoil study for design of foundations at the site and presented our
findings in a report dated March 14, 2025, Project No. 25-7-169.
The proposed residence will be a single -story prefabricated structure. The residence has
been designed to be supported on spread footings sized for an allowable bearing pressure
of 2,000 psf.
At the time of our visit to the site, the foundation excavation had been cut in one level from 1'/2
to 8 feet below the adjacent ground surface. The soils exposed in the bottom of the excavation
consisted of medium dense to dense, silty sandy gravel and cobbles. No free water was
encountered in the excavation and the soils were slightly moist.
The soil conditions exposed in the excavation are consistent with those previously encountered
on the site and suitable for support of spread footings designed for the recommended allowable
bearing pressure of 2,000 psf. Loose disturbed soils should be compacted or removed in the
footing areas to expose the undisturbed natural soils. Other recommendations presented in our
previous report which are applicable should also be observed.
The recommendations submitted in this letter are based on our observation of the soils exposed
within the foundation excavation and the previous (limited) subsurface exploration at the site.
Variations in the subsurface conditions below the excavation could increase the risk of
foundation movement. We should be advised of any variations encountered in the excavation
conditions for possible changes to recommendations contained in this letter. Our services
do not include determining the presence, prevention or possibility of mold or other biological
contaminants (MOBC) developing in the future. If the client is concerned about MOBC, then
a professional in this special field of practice should be consulted.
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & AssociateC:115
James H. Parsons, PRev. by: DEHJHP/kac