You can sure tell that article comes from a pro-ethanol point of view. There's a lot of misinformation in the article.
The benzene content for one. The EPA mandated lower benzene standards over ten years ago. Also, refineries don't use toluene or xylene in a blend unless they have to because one of their other units is down. Most refineries don't make toluene or xylene anyway because it requires a special unit. As for octane, a blend of 87 when finished is actually 85.5 octane, then when ethanol is added at the loading rack it adds up to 87. Refineries don't like to "give away" octane, it costs money. That's how things were done where I used to work.What would you claim is mis-information?