HomeMy WebLinkAboutObservation of Excavation 01.31.2023awlev & Asaoelete, amI
IVAGeoteCinical and Materials Engineers 5020 County Road 154
end EnvimnmenlEl Scientists Glenwood Springs, CO 81601
phone: (970) 945-7988
f :(970)945-9454
email: kaglenwood@knom sacom
An VenPloyN Owned Company wwwAmarusaxom
Olficelucaaorvs: Drava (HQ), Parker, Coorado Springs, Fort Collins, Glrnwoad Springs, and Summit Cowty, Colorado
January 31, 2023
Jose Roberto Munoz
50591 Highway 6, Space 17
Glenwood Springs, Colorado 81601
Josemunozeastel=640mnail.com
Project No. 21-7-447
Subject: Observation of Excavation, Proposed Container, Tract 27, Antlers Orchard,
TBD County Road 237, Garfield County, Colorado
Dear Jose:
As requested, a representative of Kumar &Associates, Inc. observed the excavation at the
subject site on January 30, 2023 to evaluate the bearing materials 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 17, 2021, Project No. 21.7-447.
We understand the proposed container has been designed to be founded on spread footings
bearing on the natural sandstone bedrock and sized for an allowable bearing pressure of
3,000 psf
At the time of our visit to the site, the foundation excavation had been cut in one level from 2 to
4 feet below the adjacent gruund surface. The bearing materials exposed in the bottom of the
excavation consisted of hard sandstone bedrock. No free water was encountered in the
excavation and the soils were slightly moist to moist.
The bearing conditions exposed in the excavation are consistent with those previously
encountered on the site and suitable for support of spread footings desigoed for the
recommended allowable bearing pressure of 3,000 psf. Loose and disturbed soils should be
removed in the footing areas to expose the undisturbed natural bedrock. The bearing materials
should be protected from frost and concrete should not be placed on frozen soils or bedrock.
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. Our services do not include
detemrining 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.
Jose Roberto Munoz
January 21, 2023
Page 2
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & Associa
Robert L. Duran, P
Rev. by: JHP
RLD/kac