HomeMy WebLinkAboutObservation of ExcavationKumar & Associates, Inc.® 5020 County Road 154
'f Geotechnical and Materials Engineers Glenwood Springs, CO 81601
and Environmental Scientists phone: (970) 945-7988
email: kaglenwood@kumarusa.com
—'—� www.kumarusa.com
An Employee C?wmed Company
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
August 20, 2025
Clayton Homes
Attn: David Mahovsky
671 23 Road
Grand Junction, Colorado 81505
david.mahovsky cDclaytonhomes.com
Project No. 25-7-246
Subject: Observation of Excavation, Proposed Residence, 5587 County Road 320, Garfield
County, Colorado
Dear David:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on August 20, 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 May 16, 2025, Project No. 25-7-246.
The proposed residence will be a single -story pre -manufactured residence. The residence has
been designed to be supported on spread footings sized for an allowable bearing pressure of
1,500 psf.
At the time of our visit to the site, the foundation excavation had been cut in one level from 2'/2 to
3 feet below the adjacent ground surface. The soils exposed in the bottom of the excavation
consisted of sandy silty clay. 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 1,500 psf. Loose disturbed soils should be 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 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.
Clayton Homes
August 20, 2025
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & Associates, Inc.
PUOLJL� .
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James H. Parsons, P.E.
Reviewed by:
Robert L. Duran, P.E
J H P/kac
Project No. 25-7-246
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Kumar & Associates, Inc