Displaying items by tag: Green Bus

Green Bus

CARB Study Points to Elevated Pollutants Inside School Buses

SACRAMENTO (November 2003) — A new $450,000 study for the California Air Resources Board (CARB) conducted by researchers at UCLA and UC Riverside, found that pollution levels and air quality inside school buses might be unhealthy. Released in mid-October, this is the latest in a string of studies that suggest high pollutant concentrations inside school buses.

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EPA Wins Suit, 2007 Standards Stand

WASHINGTON, D.C. -- A federal appeals court rejected attempts May 3 by some engine makers and fuel refiners to squelch the Environmental Protection Agency's 2007 emissions requirements for diesel trucks and buses, adding yet another chapter to the long-running debate over diesel fuel and school buses.

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Minnesota's School Buses Will Run on Soybeans

MINNEAPOLIS -- A bill requiring diesel fuel sold in the state to contain a 2 percent blend of soy or vegetable oil became law without the governor's signature March 11, making Minnesota the first state to mandate biodiesel in its fuel.

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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.

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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.

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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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