The U.S. Environmental Protection Agency (EPA) is inviting small businesses, governments, and not-for-profit organizations to participate as Small Entity Representatives (SERs) for a Small Business Advocacy Review (SBAR) Panel. This panel will focus on the agency’s review of its New Source Performance Standards (NSPS) for municipal solid waste landfills. EPA seeks self-nominations directly from the small entities that may be subject to the rule requirements. Small private landfills are those with revenues of $35.5 million or less and small government-owned landfills serve populations of 50,000 people or less. Other representatives, such as trade associations that exclusively or at least primarily represent potentially regulated small entities, may also serve as SERs. Self-nominations are requested by July 5, 2013.