USEPA Attempts To End “Once In Always In” Policy
Apr 18th, 2018 | By Marc Karell
In late January 2018 the U.S. Environmental Protection Agency (USEPA) issued an internal memorandum and in early February USEPA Administrator Scott Pruitt testified to Congress about his desire to rescind the “Once In Always In” (OIAI) policy for major sources under the federal National Emission Standards for Hazardous Air Pollutants (NESHAP) program. Under OIAI, a
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