Otis White at Governing addresses the air quality problems many cities are facing again and shockingly the problem is too many cars regardless of technical fixes.
The Return of Bad Air
This has been a terrible summer for air pollution, and it?s probably just the beginning. Take Los Angeles. In 1983, there were 152 days when ground-level ozone reached unhealthy levels. By 1998, that number had dwindled to 40. But by mid-summer this year, the number was at 36 ? with the bad-air season just beginning. Same problem in Denver, which was celebrating in 2002 for having conquered its air-pollution problems. There, air pollution monitors recorded the greatest spike in ozone since 1986. Ditto in Washington, D.C., which is suffering through its worst summer of pollution in years. What?s going on? A hot summer, to be sure, but a much more troubling trend: Air quality experts say that the technical fixes that worked so well in the 1980s and 1990s (catalytic converters, on-board car computers, reformulated gasoline, etc.) have run their course. ?I?m amazed at how we are getting to the end of technology to reduce emissions,? said an air-quality official in L.A. ?It takes more work now to get the same progress.? The technology masked the basic problem of big cities: too many people driving too many cars. In L.A., 70 percent of the pollution comes from cars and trucks, and the number of vehicles has grown steadily. In Washington, some officials blame pollution that blows into the area from the Midwest (it?s called ?transport?), but others say that?s only a small part of the problem. Says one Washington city council member, ?Ozone transport is an issue, but so are our emissions. If we weren?t putting up as much gas as we do, we wouldn?t be arguing about the transport.?