Schools fighting effects of fumes

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Frances Canterbury fans herself as she sits in the driver's seat of her school bus outside Spirit Creek Middle School, waiting for the kids to pile in. The muggy weather is just one of the things the veteran bus driver has to deal with.

"I get a lot of fumes," she said, and she suffers from chronic bronchitis. "It seems to get worse in the fall and winter."

Medical College of Georgia researchers are trying to quantify just how much impact on air quality those buses are having at certain Richmond County schools.

Exhaust from school buses is the target of a national campaign to eliminate idling at schools while they wait to pick up students. The National Clean Diesel Campaign of the U.S. Environmental Protection Agency makes grants to districts to retrofit school buses with emission controls or to burn cleaner fuel.

There are roughly 390,000 diesel buses in use nationwide, and a third of them were built before 1990, Jim Blubaugh, the director of the clean diesel program, said. A 2007 survey found nearly 2,000 that were circa 1977 or older, he said.

"We've made great progress in getting a lot of those off the road," he said. "But it kind of just illustrates the extent of the age of this particular fleet and quite frankly the extent of the problem we're tackling."

The Georgia Environmental Protection Division also has made grants to 13 school districts, most in the metro Atlanta area or around Macon and Columbus, to clean up bus exhaust, said environmental compliance specialist Stacy Allman. All of those school districts were required to have no-idling policies, she said.

The division is working on a memorandum of understanding with Richmond County schools to provide $154,000 to retrofit 28 buses with emission controls so that they can meet current standards.

Richmond County drivers are already operating under a "no-idling directive" this year, and the Board of Education will consider making it a formal policy in the coming months, school spokesman Louis Svehla said.

Most school districts already have them, Mrs. Allman said.

The EPA's Clean School Bus USA, part of the Clean Diesel program, is working with 300 school districts to reduce or eliminate idling, Mr. Blumbaugh said. If all of those buses cut out 30 minutes of idling a day, he said, it would save $12 million a year in fuel costs.

Finding out what is coming out of those buses drew MCG Respiratory Therapy researchers Randy Baker and Kitty Hernlen to stand outside Spirit Creek Middle with a laser particle counter. It measures the amount of tiny particles in the air. Researchers had already made baseline readings during the summer and now late in the school day are awaiting the buses.

Dr. Baker, the chairman of the department, checks the display on the machine and it tells them it has counted 6,453 particles measuring 0.5 micron in the last minute.

It is these small fine particles that environmental officials worry about, said Alan Powell, an environmental engineer with the Environmental Protection Agency's Region 4 office in Atlanta.

"They're smaller, and they can get down into the lungs," he said.

Children's lungs are still developing, and they tend to breathe faster and are outside more, Mr. Blubaugh said.

The diesel filters can eliminate up to 90 percent of the emissions, said Rebecca Watts Hull, program manager with Mothers & Others clean air advocacy group. She held a particle counter in the exhaust stream of a bus in DeKalb County that had been retrofitted.

"The exhaust stream was actually cleaner than the ambient air," Ms. Watts Hull said. "I don't know if that is saying something really scary about Tucker, Ga.'s, ambient air quality or what the filter is doing but it is remarkable the difference that those filters make."

So far at Spirit Creek, with no buses in sight yet, the readings are good.

"It's much lower now than it has been on other days that we've been here," Dr. Baker said. Then a bus rolls past and sits idling several feet away.

"I can smell that right there, those diesel fumes, just from that turn-around," he said.

The count jumps from mid-6,000 to 10,500.

A minute later, kids file out the door into lines and begin boarding buses. After 12 buses have come and gone, most sitting no more than a couple of minutes with the engines running, the count is up to nearly 12,000. By his count, Dr. Baker said, only four idled.

"It really wasn't bad at all," he said.

At 4:30 p.m., just before the last bus leaves, the count is up to over 21,000. Other days at other schools, it has topped 30,000, Dr. Baker said. Researchers hope to take readings inside the buses in the future, he said.

"Oftentimes these buses, especially when the windows are closed, are like little environmental exposure chambers," he said. "And the particles and the volatile compounds really pick up as the kids are in the bus."

The real target of the research, however, is the parents sitting in their idling cars at the front of the school.

"I think the ultimate goal is (to) raise awareness and show some facts to the families and get the families and schools involved," Dr. Baker said. "I think the board of education has been very supportive of this so far."

Reach Tom Corwin at (706) 823-3213 or tom.corwin@augustachronicle.com.

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Little Lamb
43831
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Little Lamb 09/01/08 - 09:28 am
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After the formation of the

After the formation of the EPA, air quality in the United States has gotten progressively cleaner. Old timers can remember the hazes that would persist sometimes for weeks from smokestacks, vehicles, and open burning. These hazes are now largely gone. Our air here in the southeast is hundreds of times cleaner than it was 75 years ago. Concurrent with this cleanup, we have witnessed a corresponding increase in childhood and adult asthma incidence. I believe that the reduction in particles is causing the asthma. It's time to stop the air cleanup so our children can become healthier.

FallingLeaves
27
Points
FallingLeaves 09/01/08 - 10:16 am
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I believe mold in homes

I believe mold in homes and/or the use of household cleaning products without sufficient ventilation contributes to children's asthma. My ex used to use bleach and other cleaning products without opening windows or turning on vent fans, despite my protests. I would have to make some excuse to get us all out of the house when he would attempt to clean anything. We moved from his house with mold problems after two of my children were diagnosed with asthma, (teens), and after a few weeks and the two years since, there have been no more asthma or bronchitis problems in our new home. The only problem I have with outside air is during pollen and ragweed season, but that is manageable now that we can stay indoors without worrying about indoor pollution. I notice we don't smell the industrial plants sulfur (rotten eggs smell) like we did in the 60's and 70's, which is a relief to me, especially, since I'm allergic to sulfur products. I appreciate the cleaner air, and there is always room for improvement.

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