Green Bus

California Board May Dump Diesel for Good

SACRAMENTO, Calif. -- The Caifornia Air Resources Board will vote in March whether to repeal the current diesel-bus option and require state transit agencies to buy only natural gas and other alternate-fuel buses, venturing yet again into the sticky issue of diesel vs. natural gas.

Montebello USD to Use New Diesel Emission Reduction Service

LOS ANGELES -- The Montebello Unified School District will now utilize a newly developed technology from Krupp-Bilstein of America which reduces the toxicity of diesel engine exhaust. The Bilstein Industrial Engine Flush System circulates environmentally safe detergents within the fuel injection system, oil passages, oil galleys, and crank case area of a diesel engine, and through a series of "wash, soak, and rinse" cycles and ultra-fine filtration, evacuates sludge, particular matter, contaimants, and soot. These foregn elements can burn off during combustion, fume out the exhaust, and circulate into the air.

Fairfax County Study Finds No Environmental Risks in School Buses

SPRINGFIELD, Va. - An extensive, scientific study of a representative sample of 12 school buses in the fleet of Fairfax County Public Schools (FCPS) concluded the concentration of diesel exhaust inside the buses is below the limits of detection. The study concluded, "Breathing the air on Fairfax County Public Schools buses poses no health risks to our students and staff."

California Air Resources Board Reverses, Approves Green Diesel

SACRAMENTO, Calif. -- California Gov. Gray Davis approved a $50 million allocation plan to help solve the possible hazard that school bus emissions pose to children's health. Diesel buses have been targeted as part of the problem, but the efforts of at least one engine manufacturer have turned a problem into a solution.

EPA Proposes New 2007 Diesel Engine and Fuel Standards

WASHINGTON, D.C. -- With less than a month left in the Clinton Administration, the Environmental Protection Agency today announced a plan to combine cleaner diesel fuel and more stringent diesel engine emission requirements for trucks and buses. The plan will take effect in 2007.

Caterpillar Launches Diesel Awareness Campaign

MOSSVILLE, Ill. - Tired of, and even threatened by, the critics of diesel-fueled engines, Caterpillar has launched the Diesel Engine Campaign Association to represent the industry and educate the public on the merits of today's low-emission diesel-powered products.

Engine Manufacturers Question Study of Diesel Emissions

CHICAGO -- The South Coast Air Quality Management District, a strong advocate of removing diesel-powered buses and trucks from California roads, is scheduled to release a critical report on toxic emissions but before that occurs, major revisions are needed according to the Engine Manufacturers Association. The association states "major revisions are needed to improve the accuracy and usefulness" of the AQMD's Multiple Air Toxics Exposure Study (MATES II).

"Our main concern is that the public will be misled," said EMA executive director Glenn Keller. "The methods used in the draft MATES II report incorrectly estimate cancer risks and describe them as 'average risks' to the public. That's simply not true."

The EMA, which represents worldwide manufacturers of internal combustion engines, including Caterpillar, Cummins, GMC and International, claims scientific researchers have identified significant uncertainties and errors in the way AQMD staff determined the health risks of toxic air contaminants in the report. In particular, EMA cited inaccurate estimates of diesel particulates, noting the calculation is based on "outdated and incomplete data from the early 80s." The association also states the risk levels are not real-life exposure levels.


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