EXPANSION TO 64 MGD (PLANT II IMPROVEMENTS)
WHY: To provide additional average daily flow capacity to Plant II
WHAT: Adding an eight million gallons per day treatment train (two primary clarifiers, one biological nutrient removal basin, one secondary clarifier, four disc-filter units, and one ultraviolet disinfection channel) to Plant II, and replacement of one-half of the existing solids handling building
STATUS: Construction is complete on the project.
WHERE: Located near Allen, serves cities of Allen, Anna, Fairview, Frisco, Lucas, McKinney, Melissa, Parker, Plano, Princeton, Prosper and Richardson
WHEN: Final completion was June 2020.
HOW MUCH: $54 million
ADVANCED TREATMENT AND HEADWORKS IMPROVEMENTS (PLANT I IMPROVEMENTS)
WHY: To provide additional peak flow treatment capacity to Plant I
WHAT: Adding a BioActflo process for advanced treatment and increased peak flow capacity, expansion of the existing headworks and outfall structure
STATUS: Construction is complete on the replacement of the existing headworks equipment. The biological contact basin and high rate clarifier was started up and placed into service in July 2021.
WHERE: Located near Allen, serves the cities of Allen, Anna, Fairview, Frisco, Lucas, McKinney, Melissa, Parker, Plano, Princeton, Prosper and Richardson
WHEN: Completion on the $45 million project is expected in September 2021.
ELECTRICAL IMPROVEMENTS (PHASE IB & PHASE II)
WHY: To improve operational and maintenance capability by replacing and upgrading the electrical systems of Plant I and II
WHAT: Replace inner (Phase IB) and outer (Phase II) loop electrical distribution systems; Upgrade electrical components (Phase 1B and Phase II); Replace the main plant switchgear and install emergency generators with paralleling switchgear that will sync seamlessly with Oncor system (Phase II)
WHERE: Located near Allen off Orr Rd, serving the cities of Allen, Anna, Fairview, Frisco, Lucas, McKinney, Melissa, Parker, Plano, Princeton, Proposer and Richardson
WHEN: Final completion in December 2020 (Phase 1B); Anticipated final completion in August 2021 (Phase II)
HOW MUCH: $6 million (Phase 1B) $15 million (Phase II)