Back to the resource library Noise Letter (M.Palmer) September 7, 2006 | Share: Download Letter to the Colorado Oil and Gas Conservation Commission, asking that they limit the night-time noise level to 45 decibels. See All Related Resources Driving Best Practice in Mining Waste Management Earthworks 2025 Impact Report The Devil is in the Details: Environmental Health Impacts of the Hell’s Kitchen Lithium and Power Project Factsheet: In the Race to Build the Country’s First Deepwater Port, the Bluewater Texas Terminal is in Last Place