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I strongly support the adoption of a regulation to limit ozone
emissions from indoor air cleaning devices. My reasons in support
of this proposed regulation mirror those already stated by
Professors Nazaroff and Corsi.

For almost twenty years I, together with my co-workers, have
investigated reactions between ozone and other chemicals commonly
found indoors. Evidence is accumulating that some of the resulting
products of ozone chemistry are even more harmful than ozone itself
(see attached paper that recently appeared in Environmental Health
Perspective titled "Ozone’s Impact on Public Health: Contributions
from Indoor Exposures to Ozone and Products of Ozone-Initiated
Chemistry"). Even 50 ppb of ozone is sufficient to have meaningful
undesirable consequences in terms of indoor chemistry.