And who authorized the EPA? None other than the infamous Richard "I am not a crook" Nixon.

Also he was the President who oversaw the Clean Water Act and several other environmentally friendly pieces of legislation.
I agree that the federal government does have a vested interest in environmental consciousness in what it does and it is necessary, in the interest of promoting the general welfare, for the federal government to provide oversight and protection of air, water, and soil that the states must share.
At the same time, just as it is foolish to think there should be no regulation of any kind regarding the environment, it is equally as foolish to think that everything the EPA does is noble and/or necessary.
As you say, strike a balance and keep our wits about us less the environmental zealots unnecessarily take away our liberties, options, choices, and opportunities at the altar of what some have made into an authoritative religion.