HomeMy WebLinkAboutExcavation Observation 03.22.2021lrll ,ilrfr l't¡it
ffi CTL I THOM PSONre
March 22,2021
David Rippy Construction, lnc.
3950 Midland Avenue, Unit F2
Glenwood Springs, CO 81601
Attention: David Rippy
Subject:Excavation Observation
Carnahan Residence
3923 County Road 311
Garfield County, Colorado
Project No. GS06406.000F-305
We visited the site of the Carnahan Residence being constructed at 3923
County Road 31 1 on March 22,2021. The purpose of our site visit was to observe
the soils exposed in the foundation excavation for the building. Photographs from our
site visit are attached.
CTL I Thompson, lnc. performed a geotechnicalengineering investigation for
the Carnahan Residence at 3923 County Road 311 (Project No. GS06406.000-120;
report dated December 27,2019). Our report recommended that the soils below the
building be subexcavated to a depth of 3 feet below bottom of footing elevation and
replaced as densely-compacted, structural fill.
At the time of our site visit, the soils were excavated to a depth of 3 feet be-
low planned bottom of footing elevation. The soils at the bottom of the excavation
consisted predominantly of clay, silty to sandy. We judge soils in the subexcavated
area are suitable for placement of structural fill.
We are available to discuss the contents of this letter, lf you have questions
or need additional information, please call.
THO N, INC
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D. Kellogg, P.E
Division Manager
JDK:abr
234 Cerrter Drive I Glenwood Springs, Colorado 81601
Ielephone: 970-945-2809 Fax. 970-945-74'11