The final plat shall be accompanied by an engineering report bearing the signed and dated seal of a professional engineer registered in the state. The engineering report shall discuss the availability and methodology of providing water facilities and wastewater treatment service to individual lots within the subdivision. A detailed cost estimate per lot acceptable to the city shall be provided for those unconstructed water supply and distribution facilities and for wastewater collection and treatment facilities which are necessary to serve each lot of the subdivision. The plan shall include a construction schedule for each significant element needed to provide adequate water or wastewater facilities. If financial guarantees are to be provided under § 155.43 of this chapter, the schedule shall include the start dates and completion dates.
(A) Public water systems.
(1) Where water supplies are to be provided by an existing public water system, the subdivider shall furnish an executed contractual agreement in substantially the form attached to the ordinance codified herein (in App. 1A) between the subdivider and the retail public utility to the effect that the retail public utility has or will have the ability to supply the total flow anticipated from the ultimate development and occupancy of the proposed subdivision for a minimum of 30 years and that the subdivider has provided for the payment of costs or fees for the connection of each individual lot to the public water system, including water meters, water acquisition fees or other necessary expenses required by the retail public utility. Before final plat approval, plans and specifications for the proposed water facilities shall have been approved by all entities having jurisdiction over the proposed project, which may include the TNRCC and the county’s Health Department in addition to the responsible departments of the city. If ground water is to be the source of the water supply, the final engineering report shall include a ground water availability study which shall include comments regarding the long-term (30 years) quantity and quality of the available ground water supplies relative to the ultimate needs of the subdivision.
(2) Where there is no existing retail public utility to construct and maintain the proposed water facilities, the subdivider shall establish a retail public utility and obtain a certificate of convenience and necessity (CCS) from the TNRCC and include evidence of the CCN issuance with the plat. Before final plat approval, plans and specifications for the proposed water facilities shall have been approved by all entities having jurisdiction over the proposed project. If ground water is to be the source of the water supply, the final engineering report shall include a ground water availability study which shall include an analysis of the long-term (30 years) quantity and quality of the available ground water supplies relative to the ultimate needs of the subdivision. If surface water is the source of supply, then the final engineering report shall include evidence that sufficient water rights have been obtained and dedicated, either through acquisition or wholesale water supply agreement, that will provide a sufficient supply to serve the needs of the subdivision for a term of not less than 30 years.
(B) Non-public water systems. Where individual wells are proposed for the supply of drinking water to residences, the final engineering report shall include the quantitative and qualitative results of sampling the test wells in accordance with § 155.21(B) of this chapter. The results of such analyses shall be made available to the prospective property owners. If the water quality of the test well required pursuant to § 155.21(B) of this chapter does not meet the water quality standards as set forth in that section without treatment by an identified and commercially available water treatment system, then the final report must state the type of treatment system that will treat the water produced from the well to the specified water quality standards, the location of at least one commercial establishment within the county at which the system is available for purchase, and the cost of such system, the cost of installation of the system, and the estimated monthly maintenance cost of the treatment system. The engineer shall issue a statement concerning the availability of ground water supplies to serve the fully developed subdivision over the next 30 years. Such statement may be based on information available from the State Water Development Board’s Office of Planning. The description of the required sanitary control easement shall be included.
(C) Organized sewerage facilities.
(1) Where wastewater treatment is to be provided by an existing retail public utility, the subdivider shall furnish evidence of a contractual agreement in substantially the form attached to the ordinance codified herein (in Appendix 1B) between the subdivider and must provide that the retail public utility has or will have the ability to treat the total flow anticipated from the ultimate development and that the subdivider has paid the cost of all fees associated with connection to the wastewater collection and treatment system have been paid so that service is immediately available to each lot. Before final plat approval, an appropriate permit to dispose of wastes shall have been obtained from the TNRCC and plans and specifications for the proposed wastewater collection and treatment facilities shall have been approved by all entities having jurisdiction over the proposed project.
(2) Where there is no existing retail public utility to construct and maintain the proposed sewerage facilities, the subdivider shall establish a retail public utility and obtain a CCN from the TNRCC. Before final plat approval, a wastewater treatment permit authorizing the treatment of the wastewater for the ultimate build-out population of the subdivision shall have been obtained from the TNRCC and plans and specifications for the proposed sewerage facilities shall have been approved by all entities having jurisdiction over the proposed project.
(D) On-site sewerage facilities. Where private on-site sewerage facilities are proposed, the final engineering report shall include planning materials required by 30 TAC § 285.4(c), including the site evaluation described by 30 TAC § 285.30 and all other information required by applicable OSSF regulations.
(Ord. 2001-05, passed - -2001; Ord. 2001-07, passed 12-10-2001)