Section 62.1951 - Identification of sources(a) The plan in § 62.1950(a) applies to all Delaware existing municipal solid waste landfills for which construction, reconstruction, or modification was commenced before May 30, 1991 and that accepted waste at any time since November 8, 1987, or that have additional capacity available for future waste deposition, as described in 40 CFR part 60, subpart Cc.(b) The plan in § 62.1950(b) applies to all existing municipal solid waste landfills under the jurisdiction of the Delaware Department of Natural Resources and Environmental Control for which construction, reconstruction, or modification was commenced on or before July 17, 2014. 85 FR 9675 , Feb. 20, 2020