HomeMy WebLinkAboutObservation of Excavation
October 6, 2025 Geo Quest Project No. 25-150
Rebecca Lucero
1000 CR 252
Rifle, Colorado
81650
Subject: Open Hole InspecƟon
Ms. Lucero,
Geo Quest (GQ) visited the project at 1000 CR 252 on October 2, 2025 to observe the
foundaƟon excavaƟon for the Lucero Shop referenced in the plan set produced by DB Structural
Design dated July 25, 2025. At the Ɵme of the site visit the structure footprint was excavated to
the naƟve subgrade fooƟng elevaƟon. GQ was not present for the excavaƟon or compacƟon
process. The subsurface consisted of abundant gravel, cobbles and boulders in a matrix of
clayey sand.
The plan set uses an allowable bearing capacity value of 1,500 pounds per square foot (psf). GQ
esƟmates that this value is suitable for the subsurface condi Ɵons observed. The aƩached
photos show the excavaƟon and subgrade surface on the day of the site visit.
Proper drainage should be maintained throughout the construcƟon process to direct water
away from the excavaƟon and subgrade soil. GQ should be contacted for review if soil
condiƟons change before foundaƟon elements are placed.
Respecƞully submiƩed,
Geo Quest, LLC
Kevin E. Dye, P.E.
AƩachments: Site Visit Photos
10/6/25
Photo 1 - View of excavaƟon looking southwest
Photo 2 – View looking west