Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
All TitlesTitle 40Chapter IPart 98Subpart OAppendix - Table O-1 to Subpart O of Part 98—Emission Factors for Equipment Leaks
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Appendix - Table O-1 to Subpart O of Part 98—Emission Factors for Equipment Leaks
Equipment type Service Emission factor
(kg/hr/source)
≥10,000 ppmv <10,000 ppmv
ValvesGas0.07820.000131
ValvesLight liquid0.08920.000165
Pump sealsLight liquid0.2430.00187
Compressor sealsGas1.6080.0894
Pressure relief valvesGas1.6910.0447
ConnectorsAll0.1130.0000810
Open-ended linesAll0.011950.00150
authority: 42 U.S.C. 7401-7671q.
source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.
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