Publications Evaluating Alternative Scenarios for a Network of Variably Priced Highway Lanes in the Metropolitan Washington Region Feb 20, 2008
Publications National Capital Region: Best Practices and Policies to Reduce Greenhouse Gases Feb 26, 2008
Publications Washington DC-MD-VA 1997 Annual Fine Particle (PM2.5) NAAQS Nonattainment Area State Implementation Plan (SIP) and 2002 Base Year Inventory Mar 7, 2008 The EPA-required plan, called a State Implementation Plan (SIP), presents air quality data showing the region will continue to meet the federal standard for fine particle pollution in 2009.