30 August 2007 20:38 [Source: ICIS news]
Testifying at an Environmental Protection Agency (EPA) hearing in
The agency wants to strengthen the maximum levels for ground-level ozone allowed under the National Ambient Air Quality Standards (NAAQS) by lowering the current standard of 0.08 parts per million (ppm) for ozone in outdoor air to as little as 0.06 ppm.
The National Petrochemical & Refiners Association (NPRA) noted in its testimony that many
In addition, said NPRA environment director David Friedman, there have been steady and significant declines in
“There are many questions regarding the state of the science and, in particular, whether there have been any significant developments over the past ten years that would warrant further revisions of the standard,” Friedman said.
Friedman noted that the agency’s own impact analysis of the proposed 0.06 ppm standard indicates that level could not be reached even with application of all known ozone reduction technologies.
“EPA admits existing technologies are insufficient to meet the proposed standard and simply assumes that new technologies will become available that can double emission reductions,” Friedman said.
US refiners, chemical producers and other manufacturers opposing the new standard are worried that it would accelerate the shift from coal to natural gas for electric power generation, raising operating costs sharply and driving still more US manufacturing offshore.
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