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The abbreviations on this page were originally defined on the United States Environmental Protection Agency website.
VALLEY: Meteorological Model to Calculate Concentrations on Elevated Terrain
VCM: Vinyl Chloride Monomer
VCP: Voluntary Cleanup Program
VE: Visual Emissions
VEO: Visible Emission Observation
VHS: Vertical and Horizontal Spread Model
VHT: Vehicle-Hours of Travel
VISTTA: Visibility Impairment from Sulfur Transformation and Transport in the Atmosphere
VKT: Vehicle Kilometers Traveled
VMT: Vehicle Miles Traveled
VOC: Volatile Organic Compounds
VOS: Vehicle Operating Survey
VOST: Volatile Organic Sampling Train
VP: Vapor Pressure
VSD: Virtually Safe Dose
VSI: Visual Site Inspection
VSS: Volatile Suspended Solids