Pursuant to 40 C.F.R. 60.23, the Department of Environmental Protection (DEP) announces the opportunity to offer comments and participate in a public hearing, if requested, on a proposed revision to DEP’s pending Commercial Industrial Solid Waste Incinerator (CISWI) State Plan submission that was transmitted to EPA on May 27, 2020. Specifically, DEP is proposing to revise its pending CISWI State Plan submission to include EPA’s April 26, 2019 revisions to the model rules contained in 40 C.F.R. 60, Subpart DDDD and, pursuant to DEP’s authority under 40 C.F.R. 60.2515(b), to provide for an equivalent production-based particulate matter emission limit for units in the waste-burning kiln subcategory. Once the State Plan is approved by EPA, DEP will be the agency tasked with ensuring that CISWI facilities are in compliance with applicable emissions limitations.