But the most recent EPA document on the topic admits the agency is unable to figure out the benefits (i.e., cancer deaths prevented) of reduced gasoline air toxics (i.e., benzene, 1,3-butadiene, formaldehyde, acetylaldehyde, acrolein and naphthalene). Most likely because there aren’t any.
The news article is below.
Associated Press, May 1, 1993
WASHINGTON (AP) – Cancer-causing emissions from cars are decreasing because of smog regulations, but are likely to increase in the next century as the number of cars grows, the Environmental Protection Agency said.
An EPA study released Friday found that cars account for half the cancer deaths caused by toxic air pollution. Most of the rest of the air toxins come from factories.
In 1990, there were an estimated 720 cancer deaths nationwide caused by carcinogenic gasoline components escaping from autos, including benzene, formaldehyde and butadiene, said Dick Wilson, director of mobile sources for the EPA.
The agency projects the number will decrease by nearly half, to 370, by 2000, but then deaths are expected to begin climbing, reaching 390 by 2010.
The toxics already are decreasing as a byproduct of regulations to curtail carbon dioxide, or smog, emissions from cars. Carbon dioxide can cause respiratory illnesses but is not considered carcinogenic, Wilson said.