HomeMy WebLinkAboutObservation of Excavation 04.26.24849-az-2/-95?b
t (+n $ffih:'ffi:'fffifliiiy i *' "5020 County Road 1,54
Glenwood Springs. CO 81601
phone: (970) 945-7988
fax: (970) 945-8454
enrail : kaglenu,ood@)kumamsa.com
wtt w.kumarusa.comAn Employec Ownad Compcny
Offrce Locahons: Denver (HQ), Parker, Cblorado Springs, Fort Clollins, Clennood Springs, and Sunmrit County, Colorado
April26,2O24
Jack Kennedy
2074County Road 109
Carbondale, Colorado 81 623
jk@rof.net
Project No.23-7-674
Subject: Observation of Excavation, Proposed Garage Addition, 2074 County Road 109,
Lot 10, Teller Springs, Garfield County, Colorado
Dear Mr. Kennedy
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on Aprirl26,2024 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 at the site and presented our
findings in a report dated December 28,2023, Project No. 23-7-674. The garage addition is
located on the north side of the existing Earage.
At the time of our visit to the site, the foundation excavation had been cut in one level, about
3 feet below the adjacent ground surface. The soils exposed in the bottom of the excavation
consisted of medium stiff, sandy silty clay. No free water was encountered in the excavation
and the soils were 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. 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. 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, I
Daniel E. Hardin, P
DEH/kac
24449
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