Is environmental justice a cover for unauthorized federal coercion?

Power Line‘s John Hinderaker discusses so-called environmental justice and a disturbing trend at the Environmental Protection Agency:

The Environmental Protection Agency under Lisa Jackson has made the movement a priority, even though the agency has no statutory authority to enforce standards of environmental justice, assuming that such standards could even be defined. The danger, of course, is that the EPA will exercise powers it doesn’t legally possess by threatening companies that are subject to its regulations with reprisals if they don’t go along with the agency’s extra-legal agenda.