40 CFR Part 60, Table 1
| Engine typeand fuel | Maximumengine power | Manufacturedate | Emission standards a |
|---|---|---|---|
| g/HP-hr | ppmvd at 15% O2 | ||
| NOX | CO | VOC d | NOX | CO | VOC d |
| Non-Emergency SI Natural Gas b and Non-Emergency SI Lean Burn LPG b | 100≤HP<500 | 7/1/2008 | 2 | 4 | 1 | 160 | 540 | 86 |
| 1/1/2011 | 1 | 2 | 0.7 | 82 | 270 | 60 | ||
| Non-Emergency SI Lean Burn Natural Gas and LPG | 500≤HP<1,350 | 1/1/2008 | 2 | 4 | 1 | 160 | 540 | 86 |
| 7/1/2010 | 1 | 2 | 0.7 | 82 | 270 | 60 | ||
| Non-Emergency SI Natural Gas and Non-Emergency SI Lean Burn LPG (except lean burn 500≤HP<1,350) | HP≥500 | 7/1/2007 | 2 | 4 | 1 | 160 | 540 | 86 |
| HP≥500 | 7/1/2010 | 1 | 2 | 0.7 | 82 | 270 | 60 | |
| Landfill/Digester Gas (except lean burn 500≤HP<1,350) | HP<500 | 7/1/2008 | 3 | 5 | 1 | 220 | 610 | 80 |
| 1/1/2011 | 2 | 5 | 1 | 150 | 610 | 80 | ||
| HP≥500 | 7/1/2007 | 3 | 5 | 1 | 220 | 610 | 80 | |
| 7/1/2010 | 2 | 5 | 1 | 150 | 610 | 80 | ||
| Landfill/Digester Gas Lean Burn | 500≤HP<1,350 | 1/1/2008 | 3 | 5 | 1 | 220 | 610 | 80 |
| 7/1/2010 | 2 | 5 | 1 | 150 | 610 | 80 | ||
| Emergency | 25<HP<130 | 1/1/2009 | c 10 | 387 | N/A | N/A | N/A | N/A |
| HP≥130 | | 2 | 4 | 1 | 160 | 540 | 86 |
a Owners and operators of stationary non-certified SI engines may choose to comply with the emission standards in units of either g/HP-hr or ppmvd at 15 percent O2.
b Owners and operators of new or reconstructed non-emergency lean burn SI stationary engines with a site rating of greater than or equal to 250 brake HP located at a major source that are meeting the requirements of 40 CFR part 63, subpart ZZZZ, Table 2a do not have to comply with the CO emission standards of Table 1 of this subpart.
c The emission standards applicable to emergency engines between 25 HP and 130 HP are in terms of NOX + HC.
d For purposes of this subpart, when calculating emissions of volatile organic compounds, emissions of formaldehyde should not be included.
[76 FR 37975, June 28, 2011]