; (4) as a source of revenue or as security for the payment of principal and interest on revenue or general obligation bonds issued by the participating entity if the proceeds of the sale of the bonds will be deposited into the mitigation loan fund; or (5) to earn interest on those amounts. (i) Administration of fund (1) In general A participating entity may combine the financial administration of a mitigation loan fund with the financial administration of any other revolving fund established by the entity if— (A) combining the administration of the funds would— (i) be convenient and avoid administrative costs; and (ii) not violate the law of the participating entity; and (B) the Administrator determines that— (i) amounts obtained from a grant made under this section, amounts obtained from the repayment of a loan made from a mitigation loan fund, and interest earned on amounts in a mitigation loan fund will be— (I) accounted for separately from amounts from other revolving funds; and (II) used only for purposes authorized under this section; and (ii) after consulting with the appropriate agencies of the participating entity, the authority to establish assistance priorities and carry out oversight and related activities, other than financial administration, with respect to mitigation assistance remains with the agency of the participating entity with primary responsibility for emergency management. (2) Administrative and technical costs (A) In general For each fiscal year, a participating entity may use the amount described in subparagraph (B) to— (i) pay the reasonable costs of administration of the programs under this section, including the recovery of reasonable costs incurred in establishing a mitigation loan fund; (ii) provide appropriate oversight of projects authorized under this section