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By Ted Mitchell (registered) | Posted April 25, 2007 at 12:18:19
I forgot to reference this report on school buses and air quality. THe full report is nearly 5MB, 71 pages. It's quite technical. http://www.opha.on.ca/advocacy/letters/M...
What is relevent is a requirement to reduce PM emissions by a factor of about 10 between 2006 and 2007 buses. The advanced filters necessary for that currently run close to $10K, so not surprisingly a large bunch of old-tech school buses were grabbed up last year by value-minded school boards.
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