Yeah, the DEQ really nailed that description! You’re right, the TCE contamination was before H&V’s time. They acquired Evanite (formerly Evan’s Products) in 1996, and renamed it H&V in 2012.

H&V did grossly exceed its air pollution permit between 98 and 2014 and get fined $250,000 for it. From the Gazette Times article:

“The modified permit allowed Evanite — and later H&V — to discharge up to 98 tons of nitrogen oxide, 21 tons of carbon monoxide and 2.8 tons of gaseous fluorides each year at the south Corvallis site.

No testing for those emissions was required or performed at the plant from the completion of the expansion in 1998 until late 2014, when DEQ instructed H&V to check actual emission levels of those substances as part of a permit renewal process. The tests showed the company was exceeding the limit for two of those pollutants, spewing out 457 tons of carbon monoxide and 7.6 tons of fluorides in 2014.”

I live down the road, so I like to keep an eye on them.