Are there requirements or factors that limit how frequently the re-grant program distributes money?

Full question: Are there requirements or factors that limit how frequently the re-grant program distributes money and/or how much money the re-grant program can distribute annually toward implementation of projects, assuming Congressional appropriations happen as anticipated?  

Answer:
There are no eligibility requirements or limits to the frequency or amounts the sub-grant program distributes. Applicants may choose to distribute funds to projects in any annual increment as long as all projects are completed and closed out within the 6-year window. Applicants should commit to being able to issue its first Project RFA within one year of being selected as a Principal Recipient (page 9 of the RFA). 
EPA’s funding of selected recipients will be structured as incrementally funded cooperative agreements. Please see the discussion of incremental funding in sections II.A and II.B on pages 18-19 of the RFA document. As such, your application should include an annualized budget and budget detail narrative for the program corresponding to the workplan project narrative covering each year of the program as described on page 33 of the RFA.