Sulfur dioxide mitigation--Law and legislation

found: Work cat.: U.S. Cong. Senate. Comm. on Energy and Natural Resources. Alternative sulfur dioxide removal measurement for coal gasification ... 2007:p. 1 (bill S. 645 to amend the Energy Policy Act of 2005 to provide an alternate sulfur dioxide removal measurement ... requires the Secretary of Energy to establish goals and milestones for emissions from such projects so that by year 2020 they will be able to remove, among other criteria pollutant reductions, at least 99% of sulfur dioxide)