What are the documented concerns about snowmobile noise?
Studies in 1999-2000 showed that kiosk workers and patrol rangers in Yellowstone were subjected to noise levels exceeding OSHA standards. Excessive noise levels can result in permanent hearing loss and can also raise blood pressure. Studies have shown hearing loss for persons subjected to 73 decibels of noise for 8 hours per day for 40 years, or when subjected to 85 decibels over a shorter number of years. Kiosk workers have been exposed to average noise levels of 88 decibels over an 8-hour work day, and a February 2000 study showed patrol rangers exposed to 93 decibel levels.
