EPA fact-checks CNN’s ozone transport story

摘要

The White House’s dim view of CNN’s news reporting has spilled over to the EPA, which last week issued a news release that purported to fact-check a CNN article on an August 31, 2018, EPA memo regarding cross-state air pollution. The memo indicated that a state’s 1-part-per-billion (ppb) contribution threshold to ozone pollution in downwind states may be appropriate in state implementation plans (SIPs) that states must develop to meet Clean Air Act (CAA) Section 110 (good neighbor) provisions. According to the memo, the 1-ppb threshold can be an acceptable alternative to a more stringent 1 percent threshold (that is, 0.70 ppb, which is 1 percent of the 70-ppb National Ambient Air Quality Standard (NAAQS) for Ozone the Obama administration established in 2015).