On July 15th the U.S. Environmental Protection Agency issued final New Source Performance Standards (NSPS) for new, modified, and reconstructed Municipal Solid Waste landfills, as well as new Emission Guidelines (EG) for MSW landfills built on or before July 17, 2014.
The rules are available here, but have not yet been published in the Federal Register.
Review of the rules and their impacts on the landfill industry are ongoing, but the following are highlights from the EPA’s Fact Sheet:
- The emissions threshold for installing and operating gas collection control systems has been reduced in both rules to 34 Mg/yr from the previous 50 Mg/yr standard.
- Well-designed and well-operated landfill gas collection-and-control systems remain the best system of emission reduction (BSER).
- Quarterly surface emission monitoring of methane is required.
- Landfill owners/operators must monitor temperature and pressure at wellheads monthly and take corrective action for elevated temperature or positive pressure.
- Nitrogen/oxygen levels must still be monitored, but corrective action requirements have been removed.
- Criteria for capping or removing LFG collection-and-control systems when LFG diminishes have been created.
- Existing landfills that close within 13 months of the publication of the new Emission Guidelines will remain subject to the current 50 Mg/yr emission threshold.
- The design capacity requirements for both rules remain at 2.5 million metric tons and 2.5 million cubic meters of waste or more.
The coming days and weeks will offer a chance for more in-depth review of both rules and additional updates can be expected.
You are also encouraged to attend The Final Outcome: Summary of the NSPS and EG Rules for Landfills on Tuesday, August 23 at WASTECON® 2016.
The Rules and Regulation/Advocacy Committees of the LFG/Biogas Division will summarize the final elements of the updated rules and assess the anticipated impacts the rules will have on landfills and the LFG industry.