Combustion and venting are the two primary sources of nitrogen dioxide (NOx), sulfur dioxide (SOx), volatile organic compounds (VOCs) and particulate matter (PM). We design infrastructure and operate in a way that minimizes emissions.
In 2019, VOC emissions increased approximately 1% primarily due to increased drilling and completions in Lower 48. NOx emissions decreased approximately 3% driven by our UK disposition. SOx emissions decreased approximately 2% due to reductions from a gas plant outage in Lower 48.