Engine Compliance Schedule For Agricultural Diesel Engines
The ATCM allows in-use diesel engines that do not comply with any of the Tier 1-4 emissions standards - also referred to as "uncertified" or "Tier 0" Engines - to be operated up until a designated compliance date as long as the engines were registered with the local air pollution control agency. Tier 1 and Tier 2 engines need to be in compliance by the 2015-2016 timeframe, or 12 years after initial installation, whichever is later.
| Table 6: Emission Standards Non-certified (Tier 0) Greater than 50 BHP In-Use Stationary Diesel-Fueled Engines Used in Agricultural Operations See Title 17, CCR, Sections 93115.8(b)(2) and (4) |
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| Horsepower Range (hp) |
Application | Compliance On or After December 31 |
Diesel PM Not to Exceed (g/bhp-hr) |
HC, NOx, NMHC+NOx, and CO Not to Exceed (g/bhp-hr) |
| Greater Than 50 But Less Than 75 |
Generator Sets | 2015 | 0.02 | Off-Road CI Engine Certification Standards for an off-road engine of the model year and maximum rated power of the engine installed to meet the applicable PM standard.1 |
| All Applications | 2011 | 0.30 | ||
| Greater Than or Equal to 75 But Less Than 100 |
Generator Sets | 2015 | 0.01 | |
| All Applications | 2011 | 0.30 | ||
| Greater Than or Equal to 100 But Less Than 175 |
Generator Sets | 2015 | 0.01 | |
| All Applications | 2010 | 0.22 | ||
| Greater Than or Equal to 175 But Less Than or Equal to 750 |
All Applications | 2010 | 0.15 | |
| Greater Than 750 | All Applications | 2014 | 0.075 | |
1. If no limits have been established for an off-road engine of the same model year and maximum rated power, then the in-use stationary diesel-fueled engine used in an agricultural operation shall not exceed Tier 1 standards in Title 13, CCR, Section 2423 for an off-road engine of the same maximum rated power irrespective of model year. |
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| Table 7: Emission Standards Tier 1- and Tier 2-Certified Greater than 50 BHP In-Use Stationary Diesel-Fueled Engines Used in Agricultural Operations See Title 17, CCR, Sections 93115.8(b)(3) and (4) |
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| Horsepower Range (hp) |
Compliance On or After December 31 |
Diesel PM Not to Exceed (g/bhp-hr) |
HC, NOx, NMHC+NOx, and CO Not to Exceed (g/bhp-hr) |
| Greater Than 50 But Less Than 75 |
2015 or 12 years after the date of initial installation, whichever is later | 0.02 | Off-Road CI Engine Certification Standards for an off-road engine of the model year and maximum rated power of the engine installed to meet the applicable PM standard.1 |
| Greater Than or Equal to 75 But Less Than 175 |
2015 or 12 years after the date of initial installation, whichever is later | 0.01 | |
| Greater Than or Equal to 175 But Less Than or Equal to 750 |
2014 or 12 years after the date of initial installation, whichever is later | 0.01 | |
| Greater Than or Equal to 750 | 2014 or 12 years after the date of initial installation, whichever is later | 0.075 | |
1. If no limits have been established for an off-road engine of the same model year and maximum rated power, then the in-use stationary diesel-fueled engine used in an agricultural operation shall not exceed Tier 1 standards in Title 13, CCR, Section 2423 for an off-road engine of the same maximum rated power irrespective of model year. |
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Return to the Registration Program for Agricultural Diesel Engines.
