I was in the aftermarket automotive field, vs the EPA. I was asked not to share the details, but it's all public knowledge. 

This was what happened to a company adjacent to us. They were far less justified and therefor were hit with criminal charges. We were lucky enough to only have a civil case brought against us. At any time that could have changed though. 

https://www.justice.gov/usao-ak/pr/co-owners-arm-rippin-toys-plead-guilty-clean-air-act-violation