Ohio Rev. Code Ann. § 133.34
(A) Upon the determination of the taxing authority that such funding or refunding will be in the subdivision's best interest, the subdivision may:
(1) Issue general obligation securities to fund or refund any outstanding revenue or mortgage revenue, sales tax supported, or other special obligation securities previously issued by it for permanent improvements pursuant to authorization by law or the Ohio Constitution. Any general obligation bonds issued pursuant to this division (A)(1) shall be payable as to principal at such times and in such installments as determined by the taxing authority consistent with section 133.21 of the Revised Code. The last maturity of the refunding securities shall not be later than the later of:
(D) Moneys derived from the proceeds of securities issued pursuant to this section to fund or refund general obligation bonds, or moneys from other sources, and required for the purpose shall, under an escrow agreement or otherwise, to the extent required by the legislation be placed in an escrow fund, which may be in the bond retirement fund in the case of the funded or refunded bonds being payable within ninety days of issuance of the refunding securities, and other moneys applied pursuant to this section to fund general obligation bonds shall, under an escrow agreement or otherwise, to the extent required by the legislation, be placed in an escrow fund that may be in the sinking fund or bond retirement fund, and in either case are pledged for the purpose of funding or refunding the refunded general obligation bonds and shall be used, together with any other available funds as provided in this section, for that purpose. Pending that use, the moneys in escrow shall be held in cash or, if and to the extent authorized by the taxing authority, invested in whole or in part in direct obligations of or obligations guaranteed as to payment by the United States that mature or are subject to redemption by and at the option of the holder not later than the date or dates when the moneys invested, together with interest or other investment income accrued on those moneys, and any moneys held in cash and not invested will be required for that use. Any moneys in the escrow fund derived from the issuance of revenue or mortgage revenue, sales tax supported, or other special obligation securities that will not be needed to pay debt charges on the funded or refunded general obligation bonds may be used for and pledged to the payment of debt charges on the refunding securities and on any securities issued on a parity with the refunding securities. Any moneys in the escrow fund derived from the proceeds of refunding general obligation securities and that will not be needed to pay debt charges on the refunded general obligation bonds shall be transferred to the bond retirement fund. When the subdivision has placed in escrow moneys, derived from proceeds of refunding obligations or otherwise, or those direct or guaranteed obligations of the United States, or a combination of both, determined by an independent public accounting firm to be sufficient, with the interest or other investment income accruing on those direct or guaranteed obligations, for the payment of debt charges on the funded or refunded general obligation bonds, the funded or refunded general obligation bonds shall no longer be considered to be outstanding, shall not be considered for purposes of determining any limitation, direct or indirect, on the indebtedness or net indebtedness of the subdivision, and the levy of taxes or other charges for the payment of debt charges on the funded or refunded general obligation bonds under this chapter, Chapter 5705., or other provisions of the Revised Code, shall not be required. For purposes of this division, "direct obligations of or obligations guaranteed as to payment by the United States" includes rights to receive payment or portions of payments of the principal of or interest or other investment income on: