2008 Nonroad Diesel Rule

Control of Emissions of Air Pollution From Nonroad Diesel Engines and Fuel

"This comprehensive national program regulates nonroad diesel engines and diesel fuel as a system. New engine standards will begin to take effect in the 2008 model year, phasing in over a number of years. These standards are based on the use of advanced exhaust emission control devices. We estimate particulate matter reductions of 95 percent, nitrogen oxides reductions of 90 percent, and the virtual elimination of sulfur oxides from nonroad engines meeting the new standards. Nonroad diesel fuel sulfur reductions of more than 99 percent from existing levels will provide significant health benefits as well as facilitate the introduction of high-efficiency catalytic exhaust emission control devices as these devices are damaged by sulfur. These fuel controls will be phased-in starting in mid-2007. Today's nonroad final rule is largely based on the Environmental Protection Agency's 2007 highway diesel program."

• Applicable for nonroad diesel engines - engines used mainly in construction, agricultural, industrial and mining operations.
• For engines less than 25 horse-power:
  • New 0.30 g/bhp-hr emissions standard for PM beginning Model Year 2008.
  • Previous 5.6 g/bhp-hr combined standard for NMHC+NOx remains.
• For engines of 25 to 75 horse-power:
  • 50% reduction in PM emissions from current engine standards beginning Model Year 2008.
  • New 0.02 g/bhp-hr emissions standard for PM and 3.5 g/bhp-hr for NMHC+NOx beginning Model Year 2013.
• For engines of 75 to 175 horse-power:
  • 0.01 g/bhp-hr emissions standard for PM beginning Model Year 2012.
  • 0.30 g/bhp-hr emissions standard for NOx and 0.14 g/bhp-hr for NMHC beginning Model Year 2012, with both standards phased in over a 3 - 4 year period.
• For engines of 175 to 750 horse-power:
  • 0.01 g/bhp-hr emissions standard for PM beginning Model Year 2011.
  • 0.30 g/bhp-hr emissions standard for NOx and 0.14 g/bhp-hr for NMHC beginning Model Year 2011, with both standards phased in over a 3 - 4 year period.
• For engines above 750 horse-power:
  • 0.075 g/bhp-hr emissions standard for PM and 0.30 g/bhp-hr emissions standard for NMHC starting in Model Year 2011.
  • 0.02 g/bhp-hr emission standard for PM (for generator set engines), 0.03 g/bhp-hr emissions standard for PM (for non-generator set engines), and 0.14 g/bhp-hr emissions standard for NMHC starting in Model Year 2015.
  • 0.50 g/bhp-hr emissions standard for NOx (for generator set engines above 1200 horse-power) starting in Model Year 2011. 2.6 g/bhp-hr emissions standard for NOx (for all non-generator set engines above 750 horse-power) starting in Model Year 2011. 0.50 g/bhp-hr emissions standard for NOx (for all non-generator set engines above 750 horse-power) starting in Model Year 2015.
• June, 2007 all land-based nonroad, locomotive and marine engine diesel fuel will meet 500 ppm sulfur content.
• June, 2010 all land-based nonroad diesel engine fuel will meet 15 ppm sulfur content.
• June, 2012 locomotive and marine diesel engine fuel will meet 15 ppm sulfur content.
• These rules will result in reductions of PM by 95% and NOx by 90% from current nonroad diesel engine emissions. The rules will reduce sulfur content in nonroad diesel fuel by 99% from current levels.

For More Information:

• 2008 Nonroad Diesel Engine Standards (PDF)
• EPA Website
• EPA Factsheet (TXT; PDF)

2007 Heavy-Duty Highway Diesel Rule

Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicles Standards and Highway Diesel Fuel Sulfur Control Requirements

"As part of this program, new emission standards will begin to take effect in model year 2007, and will apply to heavy-duty highway engines and vehicles. These standards are based on the use of high-efficiency catalytic exhaust emission control devices or comparably effective advanced technologies. Because these devices are damaged by sulfur, we are also reducing the level of sulfur in highway diesel fuel significantly by mid-2006." "This program will reduce particulate matter and oxides of nitrogen emissions from heavy duty engines by 90 percent and 95 percent below current standard levels, respectively. In order to meet these more stringent standards for diesel engines, the program calls for a 97 percent reduction in the sulfur content of diesel fuel. As a result, diesel vehicles will achieve gasoline-like exhaust emission levels."

• PM emissions standard: 0.01 g/bhp-hr. ALL Model Year 2007 heavy-duty engines must comply.
• NOx emissions standard: 0.20 g/bhp-hr. This standard is gradually phased in beginning with Model Year 2007. FULL compliance is required by 2010.
• Non-Methane Hydrocarbons (NMHC) emissions standard: 0.14 g/bhp-hr. This standard is gradually phased in beginning with Model Year 2007. FULL compliance is required by 2010.
• Beginning June 1, 2006 refiners can only produce diesel fuel for use in highway vehicles with a sulfur content of no more than 15 parts per million (ppm).
  • Highway diesel fuel sold at the terminal level must meet the 15 ppm requirements by July 15, 2006.
  • Highway diesel fuel sold in retail stations must meet the 15 ppm requirements by September 1, 2006.
  • Refiners that choose to produce 15 ppm sulfur content diesel fuel before June 1, 2006 can obtain credits to exempt up to 20% of the diesel fuel they sell from the new requirements.
• These rules will result in reductions of PM by 90% and NOx by 95% from current heavy duty engine emissions. The rules will reduce sulfur content in diesel fuel by 97% from current levels.

For More Information:

• 2007 Heavy Duty Engine Standards; 2006 Sulfur Diesel Rules (TXT; PDF)
• EPA Website
• EPA Factsheet (PDF)

Philadelphia Air Management Anti-Idling Regulation

Idling of Diesel Powered Motor Vehicles

..."[T]he following provisions shall apply to the operation of heavy-duty diesel powered motor vehicles: A. No person shall permit, cause, suffer or allow the engine of a heavy-duty diesel powered motor vehicle to idle prior to, during layover between, or at the conclusion of, any trip or route for any period of time beyond that which is reasonably required to attain, or to secure from, normal operating conditions. The maximum allowable period of idling shall not exceed two (2) consecutive minutes or zero (0) for layovers, except under the following conditions: 1. The engine may be idled for a period of up to five (5) consecutive minutes when the ambient temperature is less than 32°F (0°C). 2. The engine may be idled for a period of up to twenty (20) consecutive minutes when the ambient temperature is less than 20°F (-7°C). 3. The engine may be idled for a period of up to twenty (20) consecutive minutes for buses equipped with air conditioning and non-openable windows and the ambient temperature is equal to or greater than 75°F. B. No person shall permit, cause, suffer or allow the engine of a heavy-duty diesel powered motor vehicle to be accelerated while idling at any time. For the purposes of this Section, the term "heavy-duty" shall apply to any motor vehicle with a gross vehicle weight of more than 8500 pounds or with a passenger carrying capacity of more than 12 persons."

City of Philadelphia Department of Public Health Air Management Regulation IX Sect. III (January 9, 1986) (PDF)

Philadelphia Traffic Code Anti-Idling Ordinance

Excessive Idling of and Noise from Motor Vehicles

"No person shall cause or permit the engine of a bus or truck to idle for longer than five (5) minutes while parking, stopping or standing at any terminal point along an established route, except that this prohibition shall not apply to; (a) any bus or truck when the ambient temperature is forty degrees Fahrenheit (40°F) or less; (b) a bus or truck enroute to a destination but stopped by traffic congestion; or (c) a bus that pursuant to law must maintain a specific temperature for passenger comfort, provided that such a bus may idle in excess of five (5) minutes only to the minimum extent necessary to comply with such law."

Philadelphia, Pa Code and Charter §12-1127(2) (2003) (TXT)

Fine For Violations: $100 (Philadelphia Parking Authority)

REGULATIONS