Press Release
CaliFornia Air Resources Board Announces Agreement on Heavy Equipment Emissions
09/23/96
Air Resources Board Announces National Heavy Equipment Accord SACRAMENTO, Calif., Sept. 19 -- The California Air Resources Board (ARB) today announced that it has agreed to a Statement of Principles (SOP) with the USEPA and a dozen major manufacturers of diesel-powered farm and construction engines and equipment to adopt national emission standards for smog-forming nitrogen oxides and hydrocarbons. Air Resources Board Chairman John Dunlap said, "For the second time in two years California has been instrumental in bringing industry together with the federal government to forge an agreement that not only benefits our state but the rest of the nation, as well. This nationwide program will benefit manufacturers and purchasers of farm and construction equipment by keeping California's lower-polluting industries on a level playing field." To allow for the most cost-effective implementation, the standards vary in the amount of emission reduction according to engine sizes. Some of the new standards for equipment such as tractors, bulldozers and cranes, and marine engines with less than 50hp, could be adopted as early as 1999. The new standards will be adopted in two phases for many engine types, with each phasedown resulting in smog-forming emissions being reduced by about one-third. Upon full implementation, the new standards are expected to cut smog-forming emissions by up to 66 percent from many engines, compared to today's emission levels. In addition, the new emission limits will help control particulate matter, and are expected to result in equipment powered by these engines being nearly smoke-free. While some of these engines are already controlled, ARB analysis shows that without further emission limits they will contribute about one quarter of Southern California's total smog-forming emissions from motor vehicles in 2010. California's 1994 State Implementation Plan (SIP), the state's blueprint for attaining and maintaining healthy air quality, includes provisions for cuts from off-road diesels that the, SOP now covers. "The ARB has long sought to reduce emissions from off-road heavy-duty equipment in California. Off-road heavy-duty equipment is a serious source of air pollution that becomes an ever larger concern in our state as we reduce pollution from other sources," said Dunlap. Many of the Most common types of heavy-duty farm and construction equipment use engines with horsepower levels that range between 50hp and 175hp. The SOP includes emission controls for that equipment which is preempted from state control and can only be regulated by USEPA. In 1995 the ARB, in conjunction with USEPA and engine manufacturers, signed an SOP for heavy-duty on-road vehicles, such as long-haul trucks and interstate buses. This standard cut on-road emissions from those vehicles by more than half. With both the on-road and off-road SOP's signed, emissions will be cut significantly from both in-state emission sources and out-of-state vehicles and equipment that make their way to California. The Air Resources Board is a department of the California Environmental Protection Agency. ARB's mission is to promote and protect public health, welfare, and ecological resources through effective reduction of air pollutants while recognizing and considering effects on the economy. The ARB oversees all air pollution control efforts in California to attain and maintain health based air quality standards.