"Great for the environment"... until the kilotons of poisonous chemicals pumped into the earth bubble back up to the surface...at which point the frackers are l

"Great for the environment"... until the kilotons of poisonous chemicals pumped into the earth bubble back up to the surface...at which point the frackers are long gone. Also... isn't there a thing with California and earthuakes, which fracking anecdotally effects? What could possibly go wrong?