Sustainable, Livable And Green (S.L.A.G.) Highway Construction Act of 2012 - Directs the Secretary of Transportation (DOT) to establish in the Office of Pavement Technology of the Federal Highway Administration the position of Recovered Mineral Component Ombudsman to: (1) act as a liaison between the states and the DOT on federally funded highway projects; (2) encourage states to use recovered mineral component (RMC) to drive down costs and be more environmentally sensitive; and (3) provide information on projects that use RMC, its safety, and training and educational seminars on RMC environmental benefits.
Urges the Secretary to amend comprehensive procurement guidelines for federally-funded asphalt and concrete highway projects to include specifications that encourage the use of such RMCs as ground granulated blast furnace slag, blast furnace slag aggregate, and steel furnace slag aggregate.
Requires the Director of the Environmental Protection Agency (EPA) to establish standards to ensure that the use of RMCs does not violate the Federal Water Pollution Control Act or any other environmental law.