Can EPA give some clarity on the 6-year timeframe and additional potential years of funding as it relates to project timeline(s)? For example, is the timeframe intended to expect multiple years of RFAs released by the prime under the initial application to the EPA, or one RFA with extended time for project completion and reporting?

The design and overall program approach toward the Project RFA should be decided by the applicant. However, all subawards under the Project RFA must be completed and closed out within the 6-year window.