(1) The Secretary may plan, study or conduct, or permit a brownfields developer or other persons to plan, study or conduct, appropriate actions at a certified brownfield to perform a remedy of a release, imminent threat of release, or where there may be a reasonably held perception of a release or imminent threat of a release.

(2) The Secretary shall, after notice and public hearing, promulgate and revise regulations as deemed necessary for the implementation and administration of this subchapter.