In fact, it would be even worse than you say, because it would not be applied in a principled and consistent way. In actual practice, it would be default-allow if convenient, and default-forbid if not.
> No that would be correct. Congress delegated the power of they don't want to do that anymore they should take it away
No, they didn't. Congress delegating to the EPA (for instance) the power to regulate CFCs to save the ozone layer, does not also delegate the power to the EPA to regulate CO2 to solve global warming.
> The Administrator shall periodically review the list established by this subsection and publish the results thereof and, where appropriate, revise such list by rule, adding pollutants which present, or may present, through inhalation or other routes of exposure, a threat of adverse human health effects (including, but not limited to, substances which are known to be, or may reasonably be anticipated to be, carcinogenic, mutagenic, teratogenic, neurotoxic, which cause reproductive dysfunction, or which are acutely or chronically toxic) or adverse environmental effects whether through ambient concentrations, bioaccumulation, deposition, or otherwise, but not including releases subject to regulation under subsection (r) of this section as a result of emissions to the air.
But that would be backwards and wrong (like a default-allow firewall rule).