HomeMy WebLinkAboutObservation of ExcavationKumar & 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 fmplloyee ChAmed Company
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
August 11, 2025
Ram Development
Attn: Bobby Almazon
P.O. Box 1387
Carbondale, Colorado 81623
bobbyCcDramdev.build
Project No. 24-7-675
Subject: Observation of Excavation, Proposed Residence, 12 Weeping Willow Lane, Lot 8,
Roaring Fork Preserve, East of Carbondale, Garfield County, Colorado
Dear Bobby:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on August 8, 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 January 2, 2025, Project No. 24-7-675.
The house will be one to two stories of wood frame construction over slab -on -grade or crawlspace.
Foundations were designed for an allowable soil bearing pressure of 3,000 psf for bearing on the
dense gravel soils.
At the time of our visit to the site, the foundation excavation had been cut in two main levels from
1'/2 to 2%2 feet below the adjacent ground surface. The soils exposed in the bottom of the
excavation consisted of relatively dense, slightly silty sandy gravel with cobbles. 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 3,000 psf. Loose and 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.
Ram Development
August 11, 2025
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & Associates, Inc.
per: E.
i •
Daniel E. Hardin, P. 24443
Rev. by: SLIP
DEH/kac �ss/(�vei�•FN�
Project No. 24-7-675
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