Abbreviations and Acronyms
This webpage lists abbreviations and acronyms commonly found in Air Quality Permitting documents, websites and related supporting documents used on the Air Online Services web pages. As this list may not necessarily contain all the abbreviations and acronyms ever used, the Department will periodically add to this list as additional abbreviations and acronyms are found not to be already listed.
| AAC | Alaska Administrative Code |
| ADEC | Alaska Department of Environmental Conservation |
| Administrator | EPA and the Department |
| AOS | Air Online Services |
| AS | Alaska Statutes |
| ASTM | American Society for Testing and Materials |
| BACT | best available control technology |
| bHp | brake horsepower |
| CBI | confidential business information |
| CDX | Central Data Exchange |
| CEDRI | Compliance and Emissions Data Reporting Interface |
| CFR | Code of Federal Regulations |
| CAA or The Act | Clean Air Act |
| CO | carbon monoxide |
| CO2e | CO2-equivalent |
| CROMERR | Cross-Media Electronic Reporting Rule |
| Department | Alaska Department of Environmental Conservation |
| dscf | dry standard cubic foot |
| EPA | US Environmental Protection Agency |
| ERT | Electronic Reporting Tool |
| EU | emissions unit |
| EU ID | emissions unit identification |
| GACT | Generally Available Control Technology |
| GAPCP | Good Air Pollution Control Practice(s) |
| GHG | Greenhouse Gas |
| gr/dscf | grain per dry standard cubic foot |
| gph | gallons per hour |
| HAPs | hazardous air pollutants [as defined in AS 46.14.990] |
| Hp | horsepower |
| kPa | kiloPascals |
| LAER | lowest achievable emission rate |
| MACT | maximum achievable control technology [as defined in 40 CFR 63] |
| MMBtu/hr | million British thermal units per hour |
| MMscf | million standard cubic feet |
| MR&R | monitoring, recordkeeping, and reporting |
| NAICS | North American Industrial Classification System |
| NESHAP | National Emission Standards for Hazardous Air Pollutants [as contained in 40 CFR 61 and 63] |
| NH3 | ammonia |
| NOX | nitrogen oxides |
| N2O | Nitrous Oxide |
| NSPS | New Source Performance Standards [as contained in 40 CFR 60] |
| O & M | operation and maintenance |
| O2 | oxygen |
| PAL | plantwide applicability limitation |
| Pb | lead |
| PM | particulate matter |
| PM10 | particulate matter less than or equal to a nominal 10 microns in diameter |
| PM2.5 | particulate matter less than or equal to a nominal 2.5 microns in diameter |
| ppm | parts per million |
| ppmv, ppmvd | parts per million by volume on a dry basis |
| psia | pounds per square inch (absolute) |
| PSD | prevention of significant deterioration |
| PTE | potential to emit |
| SIC | Standard Industrial Classification |
| SIP | State Implementation Plan |
| SPC | Standard Permit Condition |
| SO2 | sulfur dioxide |
| SOB | Statement of Basis |
| tph | tons per hour |
| TPY | tons per year |
| VOC | volatile organic compound [as defined in 40 CFR 51.100(s)] |
| VOL | volatile organic liquid [as defined in 40 CFR 60.111b, Subpart Kb] |
| vol% | volume percent |
| wt% | weight percent |
| wt%Sfuel | weight percent of sulfur in fuel |
If you have any questions or additions to the list, please contact Moses Coss at moses.coss@alaska.gov or at 907-451-2163.
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