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Air Quality Management in the United States
RACT
reasonably available control technology
RADM
regional acid deposition model
RECLAIM
Regional Clean Air Management Program
REHEX
regional human exposure model
RFG
reformulated gasoline
RHC
reactive hydrocarbons
ROG
reactive organic gas
RVP
Reid vapor pressure (the vapor pressure of a petroleum product at 100°F)
SCAQMD
South Coast Air Quality Management District
SCR
selective catalytic reduction
SFTP
supplemental federal test procedure (for vehicle emissions)
SHED
sealed housing evaporative determination
SIP
state implementation plan
SLAMS
state and local air monitoring stations
SO2
sulfur dioxide
SOM
soil organic matter
STAPPA-ALAPCO
State and Territorial Air Pollution Program Administrators and Association of Local Air Pollution Control Officials