That section authorizes EPA to establish emission guidelines for existing sources to reflect the «best system of emission reduction» (BSER) at each of those single sources themselves. (heartland.org)
The CPP for the first time would have seen EPA regulating not specific sources, or «inside the fence,» but establishing emissions guidelines for entire states. (instituteforenergyresearch.org)
The EPA also announced that it is considering an update of emissions guidelines for existing landfills nationwide as a way to reduce methane emissions. (climatecentral.org)