On Friday the Washington Post reported:
The District and its surroundings are among the dirtier regions of the country, but 70 percent of the pollution on the worst summer days arrives from coal-fired power plants and heavy industry farther west. The new rule is expected to produce gradual improvement, but meeting the new standards will be difficult without further measures, including reducing pollution from vehicles, officials have said.Now I realize that in the first paragraph quoted above there's a qualification about auto emissions, but the estimated benefits of the new EPA rule are pretty impressive by themselves.Nitrogen oxides react with sunlight in warm air to make ground-level ozone, also known as smog, which causes respiratory problems and damages crops. Sulfur dioxide makes acid rain, which has been wreaking environmental havoc in the East for many years. Both pollutants are key contributors to fine particulate soot, which causes a variety of respiratory ailments and contributes to the haze that has increasingly marred views in some of the nation's most pristine areas.
Under the rule, sulfur dioxide pollution is expected to decline by 73 percent over the next decade, compared with 2003 levels, EPA officials said. Oxides of nitrogen are expected to drop by 61 percent.
All told, the EPA calculated, the rule will prevent 17,000 premature deaths; 1.7 million lost workdays; 500,000 lost school days; 22,000 non-fatal heart attacks; and 12,300 hospital admissions annually by 2015.
In all the back and forth, it is possible to lose sight of the fact that Maryland's air quality is poor and unhealthful and that vehicle exhaust is one of the principal culprits. That's why the General Assembly should enact the Clean Cars Act.