On June 16, 2017, the United States Environmental Protection Agency (EPA)
published a proposed
rule that would stay for two years parts of EPA’s June 3, 2016 final rule entitled
“Oil and Natural Gas Sector: Emission Standards for New, Reconstructed, and
Modified Sources,” which amended and established updated new source performance
standards (NSPS) for the oil and natural gas sector. This final rule was
codified in EPA’s NSPS regulations as Subpart OOOOa to 40 CFR Part 60 or “Quad
Oa.” Detailed information about Quad Oa can be found here.