138 lines
6.5 KiB
Plaintext
138 lines
6.5 KiB
Plaintext
From fork-admin@xent.com Wed Sep 4 16:52:06 2002
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From: "Adam L. Beberg" <beberg@mithral.com>
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To: <fork@spamassassin.taint.org>
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Subject: EPA Stunned: Diesel Exhaust Can Cause Cancer
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Date: Wed, 4 Sep 2002 08:48:11 -0700 (PDT)
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Glad they finally figured this one out... Note the very careful wording, so
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exhaust may be beneficial to ones health as long as you have a glass a day
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with some cheese.
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Interesting timing, since 16,000 truckers just lost their jobs and dont have
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to worry about death from this anymore.
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- Adam L. "Duncan" Beberg
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http://www.mithral.com/~beberg/
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beberg@mithral.com
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--------
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EPA: Diesel Exhaust Can Cause Cancer
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Wed Sep 4, 3:29 AM ET
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By H. JOSEF HEBERT, Associated Press Writer
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WASHINGTON (AP) - Inhaling diesel exhausts from large trucks and other
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sources over time can cause cancer in humans, an Environmental Protection
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Agency ( news - web sites) report concludes after a decade of study.
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The EPA finding, released Tuesday, is expected to buttress the government's
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push to reduce truck tailpipe emissions by requiring cleaner-burning engines
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and diesel fuel with ultra-low sulfur content.
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While acknowledging uncertainties about the long-term health effects of
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exposure to diesel exhausts, the EPA report said studies involving both
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animal tests and occupational exposure suggest strong evidence of a cancer
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risk to humans.
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"It is reasonable to presume that the hazard extends to environmental
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exposure levels" as well, the report said. "The potential human health
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effects of diesel exhausts is persuasive, even though assumptions and
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uncertainties are involved."
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The report mirrors conclusions made previously in documents from various
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world health agencies and studies in California and is particularly
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significant because the EPA is the federal agency that regulates diesel
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emissions under the Clean Air Act.
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Some environmentalists have raised concerns recently that the Bush
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administration might try to back away from a Clinton-era regulation that
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would establish tougher requirements on emissions from large trucks and a
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separate rule that virtually would eliminate sulfur from diesel fuel.
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EPA Administrator Christie Whitman repeatedly has promised to go ahead with
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the tougher truck and diesel rules. Last month, with White House approval,
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the EPA rebuffed attempts by some diesel engine manufacturers to postpone
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the requirements, approving new penalties against manufacturers who fail to
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meet an October deadline for making cleaner-burning truck engines.
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The engine rule does not affect emissions from trucks already on the road,
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although the separate regulation cutting the amount of sulfur in diesel fuel
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is expected to produce pollution reductions.
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The EPA's 651-page diesel health assessment did not attempt to estimate the
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probability of an individual getting cancer, given certain exposure to
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diesel exhaust. Such a risk assessment is commonly made by the EPA when
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gauging pollution health concerns.
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But in this case, the report said, "the exposure-response data are
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considered too uncertain" to produce a confident quantitative estimate of
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cancer risk to an individual.
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Nevertheless, said the report, the "totality of evidence from human, animal
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and other supporting studies" suggests that diesel exhaust "is likely to be
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carcinogenic to humans by inhalation, and that this hazard applies to
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environmental exposure."
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The report reiterated that environmental exposure to diesel exhausts poses
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short-term health problems and in the long term has been shown to be a
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"chronic respiratory hazard to humans" contributing to increased asthma and
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other respiratory problems. In some urban areas diesel exhausts account for
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as much as a quarter of the airborne microscopic soot, the report said.
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Environmentalists welcomed the study as clear evidence that pollution needs
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to be curtailed not only from large trucks but also from off-road
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diesel-powered vehicles. EPA spokeswoman Steffanie Bell said the agency
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expects to publish a rule early next year dealing with those diesel exhaust
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sources, which include farm tractors and construction equipment.
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Emily Figdor of the U.S. Public Interest Research Group, a private
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environmental organization, said: "To reduce the public's exposure to
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harmful diesel emissions, the Bush administration should ... fully implement
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clean air standards for diesel trucks and buses and should pass equivalent
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standards for diesel construction and farm equipment."
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Allen Schaeffer, executive director of the industry group Diesel Technology
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Forum, said the EPA's report "focused on the past," whereas "the future is
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clean diesel. Diesel trucks and buses built today are more than eight times
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cleaner than just a dozen years ago."
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The report acknowledged that its findings were based on emissions levels in
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the mid-1990s, but said the results continued to be valid because the slow
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turnover of truck engines has kept many of these vehicles on the road.
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