Comment submitted by J. Uckotter

As a student currently studying air quality for my senior thesis, it is imperative to regulate substances that negatively contribute air quality and more specifically to the NAAQS six criteria pollutants as spelled out in the Clean Air Act. Of course mitigating these six criteria are paramount to positive public health and they are: Carbon Monoxide, Lead, Sulfur and Nitrogen Dioxide respectively, Particulate Matter, and O-zone. As a resident of the Cincinnati, Ohio area, according to statistics, particulate matter and tropospheric ozone tend to be the two criteria pollutants that most affect this region. In terms of ozone, according to the EPA, Troposheric, or ground level ozone, is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC). In turn it is important to mitigate these substances and compounds to limit smog and protect public health. While it is important to pose regulations on substances that create smog, it is also important to deregulate substances that do not create smog. According to EPA studies, it seems as if this SolsticeTM 1233zd(E) does not aid in smog formation. Thus it is "negligibly reactive. I see this as a positive to roll-back the regulation on this substance because it will allow industry to use the substance in industrial processes. This is positive since the United States need economic growth. If scientific studies show that this substance has a negligible effect on smog creation, it is a no-brainer to deregulate SolsticeTM 1233zd(E).