Section 62.4370 - Identification of plan-negative declaration(a) Letter from the Department for Environmental Protection submitted December 18, 1996 certifying that there are no existing municipal waste combustor units in the State of Kentucky that are subject to part 60, subpart Cb, of this chapter.(b) Letter from Louisville, Kentucky, Air Pollution Control District submitted on February 11, 2010, certifying that there are no Large Municipal Waste Combustor units subject to 40 CFR part 60, subpart Cb in its jurisdiction. 65 FR 33466 , May 24, 2000, as amended at 76 FR 22824 , Apr. 25, 2011