HomeMy WebLinkAboutObservation of Excavation,,
October 28, 2014
Urueneteldt Construction
Aun: Dan Gruenefcldt
P.O. Box 1910
Basah, Colorado 81621
( )
Job No. 114 JOOA
Subject: Observation of Excavation, Proposed Residence, Lot A-1. Aspen Glen
Subdivision, 284 River's Bend, Garfield County, Colorado
Dear Dan:
As requested, the undersigned representative of Hepworth-Pawlak Geotechnical, Inc.
observed the excavation at the subject site on October 21, 2014 to evaluate the soils
exposed for foundation support. The findings of our observations and rel:ommendations
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
April 30, 2001, Job No. 101 293.
At the time of our visit to the site. the foundation excavation was complete and had been
cut in multiple levels from I to 6 feet below the adjacent ground surface. The soils
exposc<.I in the bottom of the excavation consisted of relatively dense, silty sanely gravel
with cobbles and small boulders. No free water was encountered in the excavation und
the soils were slightly moist. The exposed suhgn.1c.Ie ha<l been compacted.
The soil conditions exposed in the excavation are consistent with those previously
encountered on the site and suitable for support of spread fi.1otings designed for the
recommended allowoble bearing pressure of 3,000 ps[ Any loose and disturbed soils
should b e removed in the footing areas to expose the undi-;turbed naturul soils. Other
recommendation s presenled in our previous report which are applicable should also be
obse rved.
The recommendations submi tt ed in thi s letter are bnse <l on our observation of the soils
expo sed within the foundau on e'<cavatmn and th e prc viou c; c;uhsurfocc cxplor~ition at the
Grucncfoldt Construction
October 28 , 2014
Page 2
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 detcnnining 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 he
consulted .
If you have any questions or need further assistance, please call our office.
Sincerely,
HEPWORTH-PAWLAK GEOTECHNICAL, INC.
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