30 Tex. Admin. Code § 293.144
Applications for standby fees to be used for both debt service costs and operation and maintenance costs should distinguish between that portion of the fee intended for debt service costs and that portion intended for operation and maintenance costs. Each application requirement listed under § 293.142 of this title (relating to Application Requirements for Imposition of Standby Fees To Be Used To Supplement the Debt Service Account) and § 293.143 of this title (relating to Application Requirements for Standby Fees To Be Used To Supplement the Operation and Maintenance Fund) should be addressed for that portion intended for debt service and that portion intended for operation and maintenance costs. Only one $100 filing fee is required.
30 Tex. Admin. Code § 293.144