Wilson Creek Plant Expansion

Project Overview

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 biological nutrient basin, the secondary clarifier, disc filter units and ultraviolet disinfection basin. Construction is almost complete on the two primary clarifiers and solids building.

WHERE:  Located near Allen, serves cities of Allen, Anna, Fairview, Frisco, Lucas, McKinney, Melissa, Parker, Plano, Princeton, Prosper and Richardson

WHEN:  Design began in 2016.  Construction began October 2017.  Anticipated final completion February 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

WHERE:  Located near Allen, serves cities of Allen, Anna, Fairview, Frisco, Lucas, McKinney, Melissa, Parker, Plano, Princeton, Prosper and Richardson

WHEN:  Design began in 2015.  Construction began September 2016.  Anticipated final completion November 2019.

HOW MUCH:  $44 million

 

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); Install emergency generators and parallel switchgear that will sync seamlessly with Oncor system (Phase II)

WHERE: Located near Allen off Orr Rd, serving cities of Allen, Anna, Fairview, Frisco, Lucas, McKinney, Melissa, Parker, Plano, Princeton, Proposer and Richardson

WHEN: Design began in 2014.  Construction began December 2016.  Anticipated final completion July 2018 (Phase IB); Design began in 2017.  Anticipated start of construction July 2018.  Anticipated final completion July 2020 (Phase II)

HOW MUCH: $6 million (Phase 1B) $12 million (Phase II)