HomeMy WebLinkAboutObservation of Excavation 06.06.2023y. nnn a A8906bbm, i1na.0
I(+A G-ectechnical and Materials Engineers 5020 County Road 154
and Environnental Scientists Glenwood Springs, CO 81601
phone: (970) 945-7988
--� fax: (970) 945-8454
email: kaglenwood@kumarusa.com
An Employee Owned Company www.kumarusa.com
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
June 6, 2023
E & L Real Estate Development, LLC
Attn: Leo Carmichael
0766 River Bend Way
Glenwood Springs, Colorado 81601
!coca._- nichael8258@Mail.com
Project No. 22-7-477.A
Subject: Observation of Excavation, Proposed Residence, Lot 50, Ironbridge, 1817 River
Bend Way, Garfield County, Colorado
Mr. Carmichael:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on May 30, 2023 for foundation bearing conditions. 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 September 16, 2022, Project No. 22-7-477.
The building foundation is designed to be placed on 3 feet of compacted structural fill with an
allowable bearing pressure of 1,500 psf (modified for structural fill support to limit settlement
potential).
At the time of our visit to the site, the excavation was in progress and had been cut in one level
about 4% to 5'h feet deep (including 3 feet of sub -excavation for structural fill). Placement of
Class 6 road base was in progress in the southern part of the trench excavations. The natural
soils exposed in the excavation consisted of sandy silt and clay. No free water was encountered
and the soils were slightly moist.
The soils exposed in the excavation are consistent with those previously encountered on the site
and can be used for support of the building foundation placed on structural fill and designed for
the recommended allowable bearing pressure of 1,500 ps£ 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 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.
E & L Real Estate Development, LLC
June 6, 2023
Page 2
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & Associates,
Steven L. Pawlak, P
SLP/kac
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Kumar & Associates; Inc. `' Project No. 22.7-477.A