Historic Mammoth Hotel Seismic Stabilization and Rehabilitation

The historic Mammoth Hotel is an iconic destination for visitors of Yellowstone National Park. Constructed in 1936, the building was built before modern seismic requirements. To ensure preservation of the building’s integrity and to protect guests, the National Park Service (NPS) needed to complete numerous modern safety and infrastructure upgrades…

Yellowstone National Park West Entrance Environmental Site Investigation

In the early 1990’s, Yellowstone National Park discovered that a previously deactivated 1,000-gallon heating fuel oil tank was leaking fuel into the ground near a residential area on the west side of the Park. After many years of monitoring, the Montana Department of Environmental Quality requested that the National Park…