HomeMy WebLinkAboutObservation of Excavation 05.03.2024Kumar & Associates, Inc."
'f Geotechnical and Materials Engineers 5020 County Road 154
and Environmental Scientists Glenwood Springs, CO 81601
phone. (970) 945-7988
fax: (970) 945-8454
email: kaglenwoodCakumarusa.com
An Employee Owned Company www.kamarusa.com
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
May 3, 2024
Roger Walters
87 Hogan Circle
Battlement Mesa, Colorado 81635
rogerwalters6 (&yahoo.com
Project No. 23-7-540
Subject: Observation of Excavation, Proposed Residence, Lot 6, Block 5, Battlement
Creek Village, 461 Meadow Drive, Garfield County, Colorado
Dear Mr. Walters:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on April 29, 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 November 13, 2023, Project No. 23-7-540.
The proposed residence will be a one-story, wood frame structure with an attached garage.
At the time of our visit to the site, the foundation excavation had been cut in multiple levels
from 1 to 6'/2 feet below the adjacent ground surface. The soils exposed in the bottom of the
excavation consisted of very stiff, sandy, clayey silt. Results of moisture/density testing
performed on samples taken from the site indicate the bearing soils are sandy silt with dry
densities of 90 to 98 pcf. 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 1,000 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 (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,
a professional in this special field of practice should be consulted.
Roger Walters
May 3, 2024
Page 2
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & Associates, I
Daniel E. Hardin, P. As.
DEH/kac
Kumar & Associates, Inc. 0 Project No. 23-7-540