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Most Common Acronyms Used in Part 231

The following acronyms are commonly used in Part 231:

1) BACT - Best Available Control Technology
2) CO - Carbon Monoxide
3) ERC - Emission Reduction Credits
4) LAER - Lowest Achievable Emission Rate
5) NNSR - Non-attainment New Source Review
6) NOx - Oxides of Nitrogen
7) NSR - New Source Review
8) OTR - Ozone Transport Region
9) PAE - Projected Actual Emissions
10) PAL - Plantwide Applicability Limit
11) PEP - Project Emission Potential
12) PM - Particulate Matter
13) PM 10 - Particulate Matter less than 10 microns
14) PM 2.5 - Particulate Matter less than 2.5 microns
15) PSD - Prevention of Significant Deterioration
16) PTE - Potential to Emit
17) RMRR - Routine Maintenance, Repair, or Replacement
18) SIL - Significant Impact Level
19) SIP - State Implementation Plan
20) SO2 - Sulfur Dioxide
21) VOC - Volatile Organic Compounds


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    Division of Air Resources
    Part 231 Implementation Guidance
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