HomeMy WebLinkAboutOpen Hole Observation 09.08.2022
P.O. Box 724, Eagle, CO 81631 www.LKPEngineering.com
September 8, 2022
Pete Waaraniemi
COO and Vice President
Janckila Construction, Inc.
40 Sunset Dr. Ste. 3
Basalt, CO 81621
pete@janckilaconstruction.com
RE: Open Hole Observation
Greechan and Niiranen Residence
Lot 38, Cerise Ranch Subdivision, Phase 2
480 Larkspur Drive, Carbondale
Garfield County, CO
Project No. 22-3644
Dear Pete,
At your request on August 25 and 31 and on September 1, 2022, we visited the
construction site for the proposed Greechan and Niiranen residence on Lot 38, Cerise Ranch
Subdivision, Phase 2, 27 Larkspur Drive, Carbondale, Garfield County, Colorado.
The purpose of our site visits was to observe the soils exposed in the foundation
excavations for proposed residence and compare them with the findings and recommendations of
the Soils and Foundation Investigation, under the same project number, dated December 9, 2020.
The foundation excavation consisted of benches and perimeter trenches. The cuts ranged
from about two feet near the southwest corner of the excavation to about 8 feet on the north
(back) side of the excavation. Due to heavy root pockets encountered in the excavation
additional trenches were excavated to get below the unsuitable soil. The soil exposed in the
bottom of the foundation excavation consisted tan, gypsiferous-calcareous, silty-gravelly sand.
Loose soil in the trenches and pads must be removed prior to concrete placement. Soft spots
were not reported.
The soil exposed in the foundation excavation is suitable for the designed maximum
allowable soil bearing pressure of 1500 psf.
We recommend compliance with the recommendations of the above-named soils report
during the remainder of the construction, specifically with the sections on drainage, grading and
irrigation.
This report has been prepared according to locally accepted Professional Geotechnical
Engineering standards for similar methods of testing and soil conditions at this time. The
findings and recommendation stated above are based on the soil conditions observed and tested
in the foundation excavation only. There is no other warranty either expressed or implied.
If you have any questions, please do not hesitate to call.
Sincerely,
LKP Engineering, Inc.
Luiza Petrovska, PE
J:\_WP X4-LKP\_2022\22-3644OPEN.DOCX
9/08/2022