Whenever the Administrator publishes a proposed effluent standard, the notice thereof published in the FEDERAL REGISTER shall include a statement of the basis and purpose of the standard or a summary thereof. This statement shall include:
Where the notice of the proposed rulemaking summarizes the full statement of basis and purpose, or incorporates documents by reference, the documents thus summarized or incorporated by reference shall thereupon be made available by the Agency for inspection and copying by any interested person.
40 C.F.R. §104.4