HomeMy WebLinkAboutObservation of Excavation1(+AKumar &Associates, Inc.® 5020 County Road 154
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 4, 2026
Smith Mountain Builders
Attn: Matt Wissink
1011 Heritage Drive, Carbondale, CO
matt(a�smithmb.com Project No. 25-7-124.A
Subject: Observation of Excavation, Proposed Residence, 284 Rimledge Road, West of
County Road 100, Garfield County, Colorado
Dear Matt:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on February 3, 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 on the property and
presented our findings in a report dated January 24, 2025, Project No. 25-7-124.
At the time of our visit to the site, the foundation excavation had been cut in multiple levels from
2 to 12 feet below the adjacent ground surface. The soils exposed in the bottom of the excavation
consisted of silty sandy clay with rock fragments increasing with depth. No free water was
encountered in the excavation and the soils were slightly moist to moist.
The soil conditions exposed in the excavation are generally 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 and disturbed soils should be
removed in the footing areas to expose the undisturbed natural soils. 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 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,
Daniel E
Rev. by: SLP
DEH/kac