Not everyone shares the conservative view that if the EPA was eliminated that jobs would skyrocket. Colorado is a state that has a lot to protect environmentally, so it's not rocket science to understand why Hispanics there are supportive of the environment.
It is not possible to eliminate the EPA. It could be made to be more restrained and more to the point, though. Less activist.
The regulations have proven to be necessary, because companies aren't going to protect the environment on their own, the only thing that stops them is a fear of fines and shutdown.