HomeMy WebLinkAboutObservation of Excavation 09.09.2022t(+rtffif;#ftrffir!þå**
An Fmployso Ourmd Compony
5û20 County Road 154
Glenwood Springs, CO 81601
phone: (970) 945 7988
fax; {970) 945-8454
ernail : kaglenwood@kumarusa,corr
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Office LocatiLus: Delver {HQl. Parke¡, Colorado Splings, Fort Coliins. Gienwood Sprilgs, aud Sumr¡it County, Colorado
September 9,2021
Amanda Poindexter
P.O. Box 3653
Aspen, Colorado 81612
amandaûÐfulI circieconstruction.olg
Project No. 20-7-658
Subject:Observation of Excavation, Proposed Residence, Lot 62,Filing 5, Elk Springs,
154 Crescent Lane, Garfield County, Colorado
Dear Amanda:
As requested, the undersigned representative of Kumar & Associates, Inc. obseryed the
excavation at the subject site on September 2,2021to 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 15,2020, Project No. 20-7-658.
At the time of our visit to the site, the foundation excavation had been cut in two levels ftom2%
to 9 feet below the adjacent ground surface. The soils exposed in the bottom ofthe excavation
consisted of basalt rocks in a calcareous sand and silt matrix. No free water was encountered in
the excavation and the soils were slightly moist. The footings were formed at the time of our site
visit.
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
beanng pressure of 2,500 psf. 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
Amanda Poindexter
September 9,2021
Page 2
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, fuc.
Daniel E. Hardin, P.E.
Reviewed by: SLP
DEH/ljf
Kumar & Associates, lnc, o Prolect No. 2I.7-658