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RACM – means Reasonably Available Control Measure. A
broadly defined term referring to technological and other measures
for pollution control.
RACT – means Reasonably Available Control Technology. Control
technology that is reasonably available, and both technologically
and economically feasible. Usually applied to existing sources
in nonattainment areas; in most cases is less stringent than
New Source Performance Standards (NSPS).
Regional Greenhouse Gas Initiative (RGGI) – A cooperative
effort by Northeastern and Mid-Atlantic states to reduce carbon
dioxide emissions. The RGGI states will develop a regional
strategy by April 2005 for controlling emissions. This strategy
will more effectively control interstate transport and international
transport of greenhouse gases, and will require electric power
generators in participating states to reduce carbon dioxide
Reformulated gasoline (RFG) – specially refined gasoline
with low levels of smog-forming volatile organic compounds
(VOCs) and the low levels of hazardous air pollutants. The
1990 Clean Air Act requires sale of reformulated gasoline in
the nine smoggiest areas. Reformulated gasolines were
sold in several smoggy areas even before the 1990 Clean Air
Act was passed.
RFP – means Reasonable Further Progress. Annual incremental
reductions in air pollutant emissions as reflected in a State
Implementation Plan that the USEPA deems sufficient to provide for
the attainment of the applicable national ambient air quality
standards by the statutory deadline.
RTP – means Regional Transportation Plan. The federally
mandated long-range transportation plan for the region. It
sets out a vision for development of the transportation system
over the next twenty years and serves as an investment guide
for the region. Updated every three years.
RH – means Regional Haze. The haze produced by
a multitude of sources and activities, which emit fine particles
and their precursors across a broad geographic area. The U.S.
regulations require states to develop plans to reduce the regional
haze that impairs visibility in Class I areas.
ROP – means Rate of Progress.
RRF – means Relative Reduction Factor.