43 CFR § 404.18
How can I request assistance to conduct a feasibility study?
June 11, 2020
To request assistance to conduct a feasibility study under §404.11(a) or (b), consistent with Reclamation's recommendation in an appraisal report, you must submit a full proposal to conduct a feasibility study in response to the program announcement, pursuant to §404.20. You are not required to submit a statement of interest.