WASHINGTONAn assessment by the US Environmental Protection Agency’s
National Center for Environmental Assessment concludes that long-term
inhalation of diesel engine exhaust "is likely to pose a lung cancer hazard
to humans, as well as damage the lung in other ways, depending on exposure."
The report concluded that short-term exposures to diesel engine exhaust
can cause transient irritation and inflammatory symptoms, and that evidence
for exacerbation of existing allergies and asthma symptoms is emerging.
Supporting evidence for the carcinogenic effects of long-term exposure
include occupational studies of exposed workers, animal studies, and studies
showing mutagenic and chromosomal effects of diesel exhaust and its organic
constituents. For the full report, go to http://cfpub.epa.gov/ncea.