A Vail, Colo.-based contractor faces nearly $450,000 in federal penalties for a November 2021 trench collapse that fatally injured one worker and nearly cost the lives of two others.
A U.S. Occupational Safety and Health Administration investigation determined that A4S LLC, operating as A4S Construction, knowingly failed to install a trench protection system for the sewer line project, located in a Breckenridge, Colo., neighborhood, when the trench wall gave way on Nov. 16. One worker, identified as 20-year-old Marlon Diaz, died as a result of blunt force trauma injuries suffered during the collapse, while two others were rescued.