What is “Quad-O”?
The US Environmental Protection Agency (EPA) 40 CFR Part 60 Subpart OOOO is colloquially known as “Quad-O”. It is a regulation under the Clean Air Act meant to identify emissions sources in oil and natural gas operations contributing to pollution and reduce emissions. The emissions of methane and VOCs from oil and gas equipment used in the production and processing and the transmission and storage of natural gas are affected.