High Altitude Diving – Intake Valve Removal and Tunnel Dimensioning
Customer: Denver Water
At 6,842ft (2085m) elevation and 221ft (67m) in height, it was the world’s tallest dam when completed in in 1905. Cheesman Dam supports a key reservoir for Denver Water the provider of potable water to Denver, CO and the surrounding communities.
Upgrades to the site required Ballard Marine Construction to mobilized mixed gas diving gear, multiple hyperbaric chambers, barges, multiple cranes and other equipment to the high altitude, remotely located Dillon Reservoir.
Highlighted Activities included:
Issue: The existing concrete was much harder than anticipated and the traditional method of removal was not satisfactory.
Resolution: Ballard Marine Construction mobilized a 40000 psi hp water /abrasive injection system for use by the diver to demo rock and concrete.
This is a perfect example of utilizing traditional