HomeMy WebLinkAboutObservation of ExcavationI(3A}.:ffi[#n$nnii:'i*"'
An Employ;s OrYnGd GomPonY
5020 CountY Road 154
Glenwood Springs, CO 81601
phone: (970) 945-7988
fax: (970) 945-8454
ernail : kaglenwood@kumarusa.com
r.vww.kumarusa.com
Offrce J-ocations: Denver (HQ), Parker, Colorado Sprhgs, Forl Colli:rs, Glenwood Springs, and Summit Counfi Colorado
October 4,2024
Tim Finholm
P.O. Box 503
New Castle, Colorado 81647
t{ilhsl_m @ uniquegqB. cq$1
Project No. 23-7-568
Subject:Observation of Excavation, Proposed Residence,24O Rippy Lane, New Castle,
Colorado
Dear Tim:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on October 3,2024 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 Novembet 20,2023, Project No. 23-7-568'
The proposed residence will be a single-story wood-frame structure with attached garage.
The residence has been designed to be supported on spread footings sized for an allowable soil
bearing pressure of 3,000 Psf.
At the time of our visit to the site, the foundation excavation had been cut in two levels ftom2Yz
to 4vzfeet below the adjacent ground surface. The soils exposed in the bottom ofthe excavation
consisted of dense, silty sandy gravel and cobbles. No free water was encountered in the
excavation and the soils were slightly 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 3,000 psf. Loose 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 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, then a professional
in this special field of practice should be consulted.
Tim Finholm
October 4,2024
Page2
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & Associates, lnc.
James H. Parsons, P.
Rev. by: RLD
JHP/kac
cc: Jim Gornick - James Gornick Building Specialists - rjgon:rickl98B@gmail'com)
Kumar & Associates, Inc. @ Project No.23-7-568