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 owned Company
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
February 11, 2026
BEA, Inc
Attn: Brian Stowell
809 Lakeside Drive
Carbondale, Colorado 81623
Stowman62(a)-gmail.com
Project No. 21-7-756.A
Subject: Observation of Excavation, Proposed Residence, Lot 12, Coryell Ranch, 541
Coryell Ranch Road, Garfield County, Colorado
Brian:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on February 11, 2026 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 October 10, 2021, Project No. 21-7-756. The current
observation was performed in accordance with our agreement for professional services with BEA,
Inc. dated February 9, 2026.
The proposed residence will be a single -story wood framed structure with structural floor over
crawlspace and an attached slab -on -grade garage. A separate ADU will be a one-story wood
framed structure over a crawlspace.
At the time of our visit to the site, the foundation excavation had been cut in two levels from about
ground -level to about 7 feet below the adjacent ground surface. The excavation for the ADU was
cut to one level about 5'/2 feet below the adjacent ground surface. The soils exposed in the bottom
of the excavations consisted of slightly clayey, silty sandy gravel with cobbles and small boulders.
No free water was encountered in the excavation and the soils were slightly moist to 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 2,500 psf. Loose and disturbed soils in the excavation should be moistened
and compacted. The bearing soils should be protected from frost and concrete should not be
placed on frozen 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
BEA, Inc.
February 11, 2026
Project No. 21-7-756.A
Page 2
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.
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David A. Noteboom, Staff Engineer
Reviewed by:
4
Steven L. Pawlz
DAN/kac
Kumar & Associates, Inc