Upon request of an organization which has made or intends to make a proposal under this subchapter, the head of any Federal department or agency may make available to the organization any existing engineering, economic, or hydrologic information and printed material that it may have and that will be useful in connection with the planning, design, construction, or operation and maintenance of the project concerned. The reasonable cost of any plans, specifications, and other unpublished material furnished by the Secretary pursuant to this section and the cost of making and administering any loan under this subchapter shall, to the extent that they would not be nonreimbursable in the case of a project constructed under the Federal reclamation laws, be treated as a loan and covered in the provisions of the contract entered into under section 422e of this title unless they are otherwise paid for by the organization.