Drilling NSPS 'Modification' Definition Could Capture Some Existing Wells

EPA's proposed oil and gas sector new source performance standards (NSPS) that would set first-time limits on the greenhouse gas (GHG) methane includes a draft definition of an emissions source "modification" that appears broader than its current drilling air rules and could capture some existing wells even though the rule targets new sources. The proposal says its controls on "fugitive" unplanned emissions would apply when new wells are added to a site, "or an existing well on a well site...