Revenue or general obligation bonds secured by pledge of revenues: Establishment, maintenance and revision of schedules of rates and fees

In order to insure the payment of the revenue bonds of the county or of the general obligation bonds of the county, the payment of which is secured or is additionally secured, as the case may be, by a pledge of the revenues of the recreational facilities, of any such other income-producing project and of any such excise taxes, as provided in NRS 244A.637, or other such special obligation securities so secured or other such additionally secured general obligation securities of the county, the board may establish and maintain, and from time to time revise, a schedule or schedules of fees, rates and charges for services, facilities and commodities rendered by or through the recreational facilities, and any such other income-producing project and a schedule or schedules of any such excise taxes, as the case may be, in an amount sufficient for that purpose and also sufficient to discharge any covenant in the proceedings of the county fair and recreation board or board of county commissioners authorizing the issuances of any of the bonds or other securities, including any covenant for the establishment of reasonable reserve funds.