(a) The Puerto Rico Environmental Quality Board submitted to the Environmental Protection Agency a “State Plan for implementation and enforcement of 40 CFR part 60, subpart Cc, Emission Guidelines and Compliance Times for Municipal Solid Waste Landfills on February 20, 2001.”

(b) Identification of sources: The plan applies to all applicable existing municipal solid waste landfills for which construction, reconstruction, or modification commenced before May 30, 1991; and for which waste has been accepted at any time since November 8, 1987 or that have added capacity for future waste deposition.