; and (B) to the maximum extent practicable, the expected funding schedule for each project. (d) Fund management (1) In general Each State loan fund shall be established, maintained, and credited with repayments and interest, and the fund corpus shall be available in perpetuity in accordance with this section. (2) Investment authorized To the extent amounts in the State loan fund of a State are not required for current obligation or expenditure, the amounts shall be invested in interest bearing obligations. (e) State contributions Each capitalization agreement entered into under subsection (a)(1) shall require that the State deposit in the State loan fund from State funds an amount equal to not less than 20 percent of the total amount of the block grant to be made to the State on or before the date on which the block grant payment is made to the State. (f) Administration of State loan fund (1) In general Each State annually may use not greater than 4 percent of the funds allotted to the State under this section to cover the reasonable costs of administration of the programs under this section, including the recovery of reasonable costs expended to establish a State loan fund that are incurred after the date of enactment of this Act. (2) Guidance and regulations The EPA Administrator shall issue guidance and promulgate regulations as are necessary to carry out this section, including guidance and regulations— (A) to ensure that each State commits and expends funds allotted to the State under this section as efficiently as practicable in accordance with this section and applicable State law; (B) to prevent waste, fraud, and abuse