Back to the resource library Noise Letter (M.Palmer) September 7, 2006 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 Letter of Invitation to Navajor Leaders Written Testimony by Kendra Pinto Opposing HR 4374, the Energy Opportunities for All Act, a bill re-instituing extraction on Chaco Culcture National Historical Park Earthworks 2022 Annual Report All Costs, No Benefits: Oil & Gas Waste on PA Roadways