Emission Abbreviations and Acronyms
- OBSOn Boardlsystem
- OFPOzone Formation Potential
- OGVOcean-Going Vessel
- OGVOcean Going Vessel
- OGVSOcean-Going Vessels
- OGVSOcean Going Vessels
- ORSOptical Remote Sensing
- ORVROnboard Refueling Vapor Recovery
- OSACOrifice Spark Advance Costrol
- OTAQOffice of Transportation and Air Quality
- PALPlant-Wide Applicability Limit
- PALPlantwide Applicability Limits
- PDHIDPulse Discharge Helium Ionization Detector
- PGGRCPastoral Greenhouse Gas Research Consortium
- PMPParticle Measurement Programme
- PMPParticulate Measurement Programme
- PNParticle Number
- PNParticulate Number
- PPTVParts Per Trillion By Volume
- QSTIQualqfied Source Testing Individual
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