Approval and Promulgation of State Plans for Designated Facilities and Pollutants; South Dakota Control of Landfill Gas Emissions From Existing Municipal Solid Waste Landfills

EPA approves the South Dakota plan and regulations for controlling landfill gas emissions from existing municipal solid waste (MSW) landfills. South Dakota's regulations require existing MSW landfills to install a landfill gas collection and control system, if the MSW landfill's design capacity and non-methane organic compound (NMOC) emissions are above certain thresholds. South Dakota submitted its original plan to EPA on May 2, 1997 and then submitted revisions to the plan on May 6, 1999. South Dakota submitted this plan to meet section 111(d) of the Clean Air Act (Act) and EPA's Emission Guidelines for existing MSW landfills at 40 CFR part 60, subpart Cc. We approve South Dakota's plan because the State has met these requirements.