As a result of its findings from a November 14, 2007 hearing at which MPP Director Bender testified, the US House Domestic Policy Subcommittee of the Committee on Oversight and Government Reform is conducting an investigation into the work of the Environmental Protection Agency (EPA) to determine if EPA has underestimated mercury emissions related to dental use of mercury. The Subcommittee’s hearing revealed significant disparities between the agency’s data for mercury emissions related to dental use of mercury and other estimates. EPA has even expressed a lack of confidence in some of its estimates. Furthermore, there are a number of other emissions pathways for which EPA has failed to develop any estimates, as the attached letter from the Subcommittee to EPA Administrator Steve Johnson outlines. It its letter, Chairman Dennis Kucinich requests that EPA provide specific information to the Committee no later than Feb.29, 2008.