"Arson in the second degree 
164.315 
 A person commits the crime of arson in the second degree if:

By knowingly engaging in the manufacture of methamphetamine, the person causes fire or causes an explosion that damages ...Any property of another and the damages to the property exceed $750"

I think we need to add 'hash oil manufacturing' to this Oregon statute.   Too many stoned idiots are out there playing  chemist.