HomeMy WebLinkAboutObservation of Excavation 08.20.2024Kumar & Associates, Inc.
'( Geotechnical and Materials Engineers 5020 County Road 154
and Environmental Scientists Glenwood Springs, CO 81601
phone. (970) 945-7988
fax: (970) 945-8454
email: kaglenwood@kumarusa.com
M &nploY" Owed Company www.kumarusa.com
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
August 20, 2024
Bruce Upton
320 Roaring Fork Court
Basalt, Colorado 81621
bruce.bearcreekA) glnail . com
Project No. 22-7-434.A
Subject: Observation of Excavation, Proposed Additions to Existing Residence, 131 Buck
Point Road, Lot 7, Panorama Ranches, Garfield County, Colorado
Dear Bruce:
As requested, a representative of Kumar & Associates, Inc. observed the excavations at the
subject site on August 19, 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 August 8, 2022, Project No. 22-7-434. The current
observation was performed in accordance with our agreement for professional services with
you dated August 19, 2024.
The proposed additions will be on the east and south sides of the house and will be one story
wood frame structures over crawlspace or, possible slab -on -grade.
At the time of our visit to the site, the foundation excavations had been cut in one level from 2
to 5 feet below the adjacent ground surface. The soils exposed in the bottom of the excavations
consisted of stiff, silty sandy clay. No free water was encountered in the excavations 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 1,500 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 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.
Bruce Upton
August 20, 2024
Page 2
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & Associates, Inc Pip REG�ST
4
Daniel E. Hardin, P.XJ�y+(
Rev. by: SLP �SS�ONA�
DEH/kac
Kumar & Associates, Inc. 0 Project No. 22-7-434.A