Any grant under this section for the demonstration of a resource recovery system may be made only if it (A) is consistent with any plans which meet the requirements of subchapter IV of this chapter; (B) is consistent with the guidelines recommended pursuant to section 6907 of this title; (C) is designed to provide area-wide resource recovery systems consistent with the purposes of this chapter, as determined by the Administrator, pursuant to regulations promulgated under subsection (d) of this section; and (D) provides an equitable system for distributing the costs associated with construction, operation, and maintenance of any resource recovery system among the users of such system.