Green Bus

New Propane Yard Unveiled for LAUSD Buses

NORTH HOLLYWOOD, Calif. — Some students in the San Fernando Valley will soon be boarding school buses powered by propane, and School Transportation of America maintenance staff and drivers located at the company’s North Hollywood yard were scheduled to begin receiving training on how to use a new fueling station installed at the company’s new facilities located just off the Hollywood Freeway.

California Fleets Get a Hand from CARB

SACRAMENTO — Fleet owners in California and beyond now have some help when attempting to comply with more stringent California Air Resources Board (CARB) emissions standards recently approved by the U.S. Environmental Protection Agency.

Southern California School Districts Receive Largest Replacement Grant

DIAMOND BAR, Calif. — Los Angeles Unified School District will replace 260 of its oldest diesel buses with new CNG and propane vehicles following a $43 million vehicle replacement grant from the South Coast Air Quality Management District awarded to a total of 13 districts, signaling the return of the state’s Lower-Emission School Bus Program amid a new 1-percent sales tax increase affecting state vehicle purchases.

Emission Standards

Governmental vehicle emission standards began in 1959 in California. The federal government became involved eight years later as Congress passed the Air Quality Act of 1967, which designated air quality regions throughout the country and gave states the responsibility for adopting and enforcing pollution control standards in those regions. In 1970, President Richard Nixon brought those responsibilities under one umbrella with the establishment of the Environmental Protection Agency. Since then, the EPA has regulated diesel fuel emissions on an almost annual basis.

Currently, engine manufacturers are operating under a 1998 consent decree that, among other things, mandated meeting the 2004 emission standards by October 2002. This "tier 1" regulation targeted the use of low sulphur diesel fuel.

Engine manufacturers began meeting stringent 2007 EPA diesel emission standards for diesel's most common pollutants -- Nitrogen Oxides (NOx), Particulate Matter (PM) and Hydrocarbons (HC) -- and reduced the levels to 0.20, 0.01 and .14 grams/brake-horsepower-hour, respectively, through the use of diesel oxidation catalysts and the introduction of ultra low sulphur diesel.

Even stricter engine "tier 3" standards went  into place in 2010 that required diesel particular filters and Selective Catalyst Reduction.

See DieselNet and the EPA for more in-depth information regarding diesel emission standards. The U.S. Department of Energy's Alternative Fuels & Advanced Vehicles Data Center has a comprehensive list of federal and state laws.





News Developments

Toyota Clean Buses for Kids

EPA Announces $7.5 million Available for Clean School Bus Projects

EPA Administrator Leavitt Awards Clean School Bus Grants to Two Michigan School Districts.

Administrator Leavitt Joins Caterpillar, Inc. in Clean School Bus Partnership and Grant Announcement.

Bush Administration Proposes Major New Funding to Reduce School Bus Emissions

Acting Administrator Horinko Announces 17 Clean School Bus demonstration project grants.

Whitman Announces New Partnership to Reduce Children's Exposure to Emissions from Diesel School Buses

Adopt-A-School Bus Program Brings Cleaner Air to Dallas/Fort Worth Children

EPA and U.S. Attorney Announce $3.375 Million Enforcement Settlement that will Improve Air Quality and the Environment in Boston

Green Diesel Engine Technology Meets EPA Rule for Cleaner Diesel Trucks and Buses

Dedicated Propane School Bus Unveiled at NAPT 2003 (Propane Education Research Council, November 2003)

Levels Inside School Buses (November 2003)

EPA Wins Suit, 2007 Standards Stand, STN, May 2002

Minnesota's School Buses will Run on Soybeans, STN, May 2002

CARB Study: Low Sulfur Diesel Produced Lower Emissions than CNG, STN, May 2002

New Day Dawns for Diesel: Seize the Opportunity, Speech by International President John R. Horne, February 2002

California Board May Dump Diesel for Good, STN, March 2002

Green Diesel Engine Technology Meets EPA Rule for Cleaner Diesel Trucks and Buses, EPA, July 2001

Montebello USD to Use New Diesel Emission Reduction Service, STN, May 2001

Los Angeles Community Leaders Oppose CNG for School Buses, STN, April 2001

Many in Education Community Oppose Rule 1195, STN, April 2001

SCAQMD Adopts CNG-Only Rule 1195, Rejects Clean Diesel, STN, April 2001

Diesel Technology Forum Urges SCAQMD to Keep Clean Diesel Option, STN, April 2001

California's SCAQMD Continues to Move for CNG-only School Buses, STN, March 2001

South Coast AQMD Thumbs its Nose at CARB's Approval of Green Diesel, STN, January 2001

California Air Resources Board Reverses, Approves Green Diesel, STN, January 2001

EPA Proposes New 2007 Diesel Engine and Fuel Standards, STN, December 2000

SCAQMD Releases Environmental Assessment of Engine Conversion, STN, March 2000

Caterpillar Launches Diesel Awareness Campaign, STN, March 2000

Engine Manufacturers Question Study of Diesel Emissions, STN, February 2000

CNG vs. Diesel: Issues in the Fuel Debate, STN, September 2000

SCAQMD Proposes Replacement of Diesel Fuel Buses, Trucks, STN, January 2000

Comparison of Modern Diesel with CNG Yields Little Difference, Says Herman, STN, May 1999

Court Denies EPA Appeal to Tighten Emission Standards, STN, June 1999

Mixed Reactions Greet CARB's Resolution to Cleanse California of Diesel Buses, Trucks, STN, December 1998

New Emission Standards for Heavy-Duty Diesel Engines Used In Trucks and Buses (Oct. 1997)

Supreme Court to Rule on SCAQMD Ruling on Clean Diesel

CARB Study Points to Elevated Pollutants Inside School Buses


EPA Announces 2003 Clean School Bus Grants

WASHINGTON DC - The U.S. Environmental Protection Agency announced that 17 grants have been awarded in the Clean School Bus USA 2003 Grant Competition. An agency official said that 120 applications were received requesting almost $60 million. "We only have $5 million to distribute," she said. The applicants came in from 36 states plus Puerto Rico, and included school districts, state and local agencies, and non profit organizations.
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