Release 98-46
July 30, 1998
CONTACT:  Joe Irvin
Jerry Martin
(916) 322-2990

ARB Begins Consideration of Diesel Exhaust As Air Toxic

        SACRAMENTO - After a full day of testimony on whether diesel exhaust should be listed as a toxic air contaminant, the Air Resources Board (ARB) today voted to leave its record open until after legislative committees review the issue next week. More than half of the Legislature wrote ARB requesting this action.

        ARB Chairman John D. Dunlap said, "In deference to the large number of lawmakers who have expressed concerns about the impact of this decision, the ARB has decided to keep the record open until after the Legislature has an opportunity to address this matter."

        The ARB heard more than five hours of testimony both supporting and opposing the identification of diesel exhaust as a toxic air contaminant. Those presenting testimony included state scientists, representatives of the trucking and fuel industry, manufacturers, agricultural businesses and environmentalists.

        Both houses of the Legislature are planning independent hearings on the issue -- the Assembly Transportation Committee on Aug. 3, and the Senate Transportation Committee on Aug. 4.

        The next ARB hearing is scheduled for August 27 in Sacramento.

        The complete report on this issue may be found on ARB's website (

        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.

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