About Air Emissions
Air pollutants are emitted into the atmosphere whenever you drive to work, ride a train, mow the lawn or grill outdoors. Similar types of air pollutants are emitted during natural gas and petroleum liquids production and completion activities such as drilling and hydraulic fracturing and gas treatment, gathering, compression and processing. Importantly, all sources of air emissions in the natural gas and petroleum liquids industry are subject to strict regulations written by the Environmental Protection Agency (EPA) under the authority of the federal Clean Air Act (CAA). States effectively implement these federal regulations and, in many cases, place additional restrictions on air emission activities.