Letter from the Oklahoma Department of Environmental Quality dated August 10, 2020, certifying that there are no incinerators that commenced construction on or before December 9, 2004, subject to the Other Solid Waste Incineration units (OSWI) Emission Guidelines, at 40 CFR part 60, subpart FFFF, as promulgated on December 16, 2005, and amended on November 24, 2006, within its jurisdiction in the State of Oklahoma.