Res 2025-125 approving a contract with Burns & McDonnell Engineering Company, Inc. to provide Phase 1, Progressive Design-Build Services for the design of the FM 1978 Water Reclamation Facility project

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Docusign Envelope ID: DA4FA5BF-D9AF-4543-AD49-B8F98E2726F6 Appendix A—Basis of Design The DB will not consider secondary treatment processes that utilize membranes.Proposed design alternatives will seek to balance energy efficiency with the ease of operation in both the selection of treatment processes and aeration equipment. The City has a preference for a"plug flow"process design,however alternative treatment processes that provide the best value to the City maybe considered. 3.4.2 Treatment Processes The DB will consider and propose design alternatives that include the following non-exhaustive list of potential components: • Conventional Activated Sludge: Barden Field • SBR: Sanitaire ICEAS advanced SBR I Xylem US • Carousel: Carrousel®System- Ovivo Water • Other: Aerobic Granular Sludge-Aqua-Aerobic Systems I Biological Treatment 3.4.3 Aeration Blowers The DB will consider and propose design alternatives including but not limited to air diffusers, mechanical aeration,multistage centrifugal blowers.The City does not currently have a preference for aeration equipment manufacturer(s). 3.5 Tertiary Treatment Tertiary treatment may be necessary to meet TPDES permit requirements and potentially water reuse standards.The City's operator has a preference for cloth media filters;however,the DB will consider and propose design alternatives that include the following non-exhaustive list of potential components for tertiary treatment: • Cloth media such as Aqua MegaDisk®-Aqua-Aerobic Systems I Cloth Media Filtration • Synthetic media such as HydrotechT"Discfilter I Veolia Water Technologies • Sand media. 3.6 Disinfection The DB will consider disinfection methods that will meet all TPDES permit requirements and be consistent with the City's preferences.The City will consider design alternatives recommended by the DB that can provide the best overall value. For the purposes of discharging treated effluent,the City has a preference for UV disinfection methods. For the purposes of reusing treated effluent,the City has a preference for sodium hypochlorite. 3.7 Plant Water System Potable water service is to be provided to the plant site through Crystal Clear Special Utility District (CCSUD).The City has initiated coordination with CCSUD The estimated potable water service need for normal plant operations and fire suppression service is listed in Table 3-1. �V 4-3 ARDURRA