The deadline to ask questions is 3/12/2024 3:00 PM CDT In summary, Expansion Phase IIIA includes the "Long-Lead Facilities" listed below: Filter Complex No. 1: Adds four (4) dual-media filters to increase filtration capacity to 85 MGD.
Settled Water Channel Isolation and Bypass: Adds a bypass to route water from the settled water basins and effluent weir channel to the ozone contactors to allow for maintenance and isolation of the settled water channel.
The First set of Early Procured Equipment which comprises this 1st Proposal Package is for the Long Lead Filter Equipment; including Underdrains, GAC Media, and Valves, Gates, and Actuators for the filter and backwash structure only. Additional Early Procured Equipment, which will be advertised in a later package includes: a backup generator with ATS and paralleling switch gear, ozone generators, onsite sodium hypochlorite generation equipment, plate settlers, flocculators, Backwash Recovery pumps, Sludge Collectors, chemical feed pumps, chemical storage tanks, VFDs, specialty valves, and any other long-lead equipment. Interim improvements to maintain plant capacity during construction activities. TOM TAYLOR WTP EXPANSION - PHASE IIIB In summary, the Phase IIIB Expansion includes construction of the following: Raw Water Meter Vaults: New magnetic flow meters with vaults and modified raw water piping.
Rapid mix modifications and additional flow meters and modulation modifications.
Flocculation and Sedimentation Basin Improvements: Uprate Basins 1 and 2 by 7.5 MGD each (for a total of 15 MGD) by modifying the flocculation zones and adding plate settlers and hoseless sludge collectors to the sedimentation zones. Replace the sludge collectors in Basins 3 to 6 with hoseless sludge collectors. Repair the Basin 3 construction joint.
Backwash Recovery Basin and Recycle Pump Station: Adds a backwash recovery basin and recycle pump station to separate backwash waste from the lagoon.
Ozone System Improvements: Replaces the existing ozone diffusers with a side stream ozone injection system and modifies the ozone contactors to increase the hydraulic throughput to 85 MGD. Expands the liquid oxygen (LOX) system by replacing the existing ozone generators, destruct units, supplemental nitrogen system, and monitoring equipment. Adds a chilled water system.
Onsite Sodium Hypochlorite Generation (OSHG) Equipment Expansion: Adds a new generator and any necessary ancillary equipment to provide a firm OSHG capacity of 85 MGD. Includes the addition of air conditioning to the OSHG room to allow for OSHG operation during hot summer days.
Chemical Feed and Storage Additions: Adds sodium hydroxide storage and containment (85 MGD capacity) and replaces the ammonium hydroxide system with LAS (85 MGD capacity).
Electrical, Instrumentation, and Controls: Add a backup generator with ATS and paralleling switch gear. All other miscellaneous electrical improvements and process control additions and/or changes to support the plant uprating to 85 MGD.
Sitework and Grading: All necessary sitework and grading to construct the above listed.
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