For each project for which a guarantee of a loan to a nonprofit private agency or a direct loan to a public agency is sought under this part, there shall be submitted to the Secretary, through the State agency designated in accordance with section 291d of this title, an application by such private nonprofit agency or by such public agency. If two or more private nonprofit agencies, or two or more public agencies, join in the project, the application may be filed by one or more such agencies. Such application shall (1) set forth all of the descriptions, plans, specifications, assurances, and information which are required by the third sentence of section 291e(a) of this title (other than clause (6) thereof) with respect to applications submitted under that section, (2) contain such other information as the Secretary may require to carry out the purposes of this part, and (3) include a certification by the State agency of the total cost of the project and the amount of the loan for which a guarantee is sought under this part, or the amount of the direct loan sought under this part, as the case may be.