HomeMy WebLinkAboutObservation of Excavation 08.24.21l(+rtffi,ffiff;ä.""-5112ü CounTir Roa¡i I i4
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(-)*ì;;* T¡¡;ations: Ileirvei {i[Q), !]arker. ll¿rl*ra¡lo S¡rri*g-s, Fbrl Collins, Gie*nooel Spri*gs, and Sururnìt {--ounTy, Colorrdo
August 24,2021
Crawford Design Build
Attn: Simon Bentley
P.O. Box 1236
Carbondale, Colorado 8 1 623
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Project No.20-7-770
Subject: Observation of Excavation, Proposed Residence, 39 Royal Coachman, Lot27,
Roaring Fork Mesa at Aspen Glen, Garfield County, Colorado
Dear Simon:
As requested, the undersigned representative of Kumar & Associates, Inc. observed the
excavation at the subject site on August 24,2021to 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 January 21,2021, Project No. 20-7-770.
At the time of our visit to the site, the foundation excavation had been cut in one level from 3 to
6 feet below the adjacent ground surface. The soils exposed in the bottom of the excavation
consisted of relatively dense silty sandy gravel in the northwestem portion of the excavation and
medium dense, very silty gravelly sand in the southeast parts of the excavation. No free water
was encountered in the excavation and the exposed soils were slightly moist to moist. The
subgrade had been compacted.
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 2,000 psf. Loose and 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 exbavation 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
t'
Cruwûxtl Design Build
August 24,2021
Page 2
(MOBÇ) developing in the fr¡ture. ltttreliilent is concemcd obout MeBCo then a professional i'
this special ñeld ofpractice should be consulfed.
If you have any questions or need firther assis'tancq please call our office.
Sincerely,
Kumar & .{.ssociates, Inc.
Daniel E. Hardin,
Rev. by: SLP
DEHlkac
Kumar t Associder, lns. *Proiec{ ilo.20.7-770