HomeMy WebLinkAboutObservation of Excavation 10.03.2024K+AKumar ni Associates, Inc
Geotechnical and Materials Engineers 5020 County Road 154
and Environmental Scientists Glenwood Springs, CO 81601
phone: (970) 945-7988
fax: (970) 945-8454
email: kaglenwood@kumarusa.com
An EnVIOY66 Owned Company www.kumarusa.com
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
October 3, 2024
Phil and Lisa Ensign
683 Overlook Drive
Glenwood Springs, Colorado 81601
luU �lensignn(&gmail.com
Project No. 17-7-561
Subject: Observation of Excavation, Proposed Barn, Lot 23, High Aspen Ranch,
683 Overlook Drive, Garfield County, Colorado
Dear Mr. and Mrs. Ensign:
As requested, the undersigned representative of Kumar & Associates observed the excavation
at the subject site on October 1, 2024 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 for the residence
at this site and presented our findings in a report dated August 7, 2017, Project No. 17-7-561.
At the time of our visit to the site, the foundation excavation for the barn had been cut in two
levels from'/z to 5 feet below the adjacent ground surface. The soils exposed in the bottom of
the excavation consisted silty sand and gravel with scattered basalt rocks. No free water was
encountered in the excavation and the soils were slightly moist.
The natural 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 and disturbed soils should be
moistened and compacted prior to forming footings. The bearing soils should be protected
from frost and concrete should not be placed on frozen soils.
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 & Associates, Inc.
E.
Daniel E Hardin, P.Elk 16 h/yL(
DEH/kac N1b
S/p.... �
Cc: Brian Westerliniean.com