HomeMy WebLinkAboutObservation of Excavation1f+AKumar ni Associates, loc.®
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
An Ernpioy" Owned Company www.kumarusa.com
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
October 28, 2024
Evan Wagstrom
P.O. Box 543
Glenwood Springs, Colorado 81602
ewags67(a�Q nail.com
Project No. 23-7-689
Subject: Observation of Excavation, Proposed Residence, TBD Ram Lane, Lot 2, Piffer
Subdivision Exemption, Garfield County, Colorado
Dear Mr. Wagstrom:
As requested, Kumar & Associates, Inc. observed the existing subsoil conditions at the new
residence subgrade at the subject site on October 28, 2024.. We previously observed three pit
excavations at the site as described in a letter dated December 18, 2023.
The excavation for the residence had been dug about 2%2 to 7 feet below the surrounding grade.
No free water was observed in the excavation. The subgrade appeared firm and suitable for
new foundations designed for an allowable soil bearing pressure of 2,000 psf. A sample of the
subgrade soils showed a per cent finer than sand size of 34%, Atterberg limits testing indicated a
liquid limit of 28 and a plasticity index of 16. Footings should be a minimum width of 18 inches
for walls and 2 feet for columns.
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & Associates,
t ;o
Daniel E. Hardin, P. �,�_
DEH/kac