National Acid Deposition Control Act of 1984

National Acid Deposition Control Act of 1984 - Title I: Acid Deposition Control and Assistance Program - Amends the Clean Air Act to establish new requirements for acid deposition control.

Directs the Administrator of the Environmental Protection Agency (EPA), within four months after the enactment of this Act, to compute a State share, for each of the 48 contiguous States, of a 10,000,000 ton reduction in annual emissions of sulfur dioxide by 1993 below that of 1980. Sets forth a formula for computation of State shares. Permits the Governors of two or more States to reallot State shares among agreeing States, if there is an equal or greater total reduction in annual emissions of sulfur dioxide through such reallotment.

Sets deadlines and procedures for submission and approval of State plans for such State shares. Directs the Administrator to promulgate a State plan on January 1, 1988, if no State plan has been: (1) submitted by June 1, 1985; or (2) approved by January 1, 1988.

Requires State plans for State shares to provide for emission limitations applicable to any existing stationary sources in the State for which the actual annual sulfur dioxide emission rates have been calculated by the Administrator for the calendar year 1980. Requires that the emission limitations for each stationary source subject to the State plan establish an allowable average annual sulfur dioxide rate at a level such that the total reduction would equal the State share.

Permits State plans for State shares to provide for compliance with emission limitations through use of fuel having a lower sulfur content than the fuel used in 1980, precombustion removal of sulfur (such as "coal washing"), technological systems of continuous emission reduction, or any other means which the State deems appropriate.

Makes conforming amendments relating to Federal enforcement, criminal and civil violations, and judicial review of administrative acts. Authorizes the Administrator to commence a civil action for permanent or temporary injunction or to assess and recover a civil penalty of up to $25,000 per day of violation, or both, whenever any person violates any requirement in effect under this Act.

Eliminates a percentage reduction requirement with respect to sulfur dioxide emissions from any fossil fuel fired stationary source which: (1) commences construction after the date of enactment of this Act; and (2) complies with a standard of performance which prohibits sulfur dioxide emissions in excess of 1.2 pounds per million Btu. Provides that, in the case of any such source, the terms "technological process" and "technological system" shall not be construed to require compliance with a percentage reduction requirement, or any other emission limitation, for sulfur dioxide which is more stringent than 1.2 pounds per million Btu. Provides that specified EPA regulations shall cease to apply to the extent they are inconsistent with these amendments. Directs the Administrator to amend such regulations to reflect these amendments.

Title II: Control of Nitrogen Oxide Emissions - Directs the Administrator to revise standards of performance for new stationary sources for emissions of nitrogen oxides from electric utility steam generating units which burn bituminous or subbituminous coal and which commence construction after the enactment of this Act. Prohibits the emission of nitrogen oxides from such units at a rate which exceeds: (1) 0.30 pounds per million Btu, in the case of subbituminous coal; and (2) 0.40 pounds per million Btu, in the case of bituminous coal.

Adds to provisions relating to emissions from mobile sources to set the following nitrogen oxide emission standards for model year 1986 and after truck and truck engines: (1) gross vehicle weight of 6,000 pounds or less - 1.2 grams per vehicle mile; (2) 6,000 to 8,500 pounds - 1.7 grams per vehicle mile; and (3) more than 8,500 pounds - 4.0 grams per brake horsepower-hour.