John Hargrove Environmental Complex Water Reclamation Facility Expansion

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About.  The John Hargrove Water Reclamation Facility (JHEC WRF) was constructed in 1998 and currently has a permitted treatment capacity of 4 million gallons per day (MGD). Current flow data indicates that the monthly average influent flow during recent wet weather has met or exceeded the 75% average daily flow rule and the Texas Commission on Environmental Quality (TCEQ) requires that planning for plant expansion to begin when flows reach 75% of plant rated capacity. This prompted the City to begin preliminary engineering in 2016 to expand the facility to a 6 MGD ADF. 

Scope. The JHEC plant will be designed and constructed to utilize the existing sequencing batch reactor (SBR) technology it does now.  However, the design and construction will allow the plant to be converted to utilize membrane bioreactor (MBR) technology if the future if the City so desires.  The MBR treatment process utilizes membranes in conjunction with a biologic process to create an ultrafiltrated or high-quality effluent.  Planned infrastructure will also be constructed for easy expansion to 8 MGD in the future if necessary, where appropriate and cost effective.

Improvements to be constructed for the 6 MGD facility include expansion and rehab of both on-site influent lift stations, a new headworks, rehabilitation of existing SBR’s 1 through 4 and existing aerated sludge holding tanks (ASHT’s) and construction of new SBR’s 5 and 6 and a new ASHT.  Blowers serving the ASHT’s and SBR’s will be replaced.  A new non-potable water system and two-story sludge dewatering facility will also be constructed.  Renovations to the existing lab are planned while new buildings for operations, a maintenance shop and covered storage area are also proposed. Other electrical, SCADA, yard piping, site security and building automation improvements are planned as well.

This project will be procured through the Construction Manager at Risk (CMAR) process.

 Schedule Info

   Base Line    Current
 Design Start  March 2019  April 2019
 Bid Start  November 2020  September 2019
 Construction Start  January 2021 July 2021 
 Proposed Construction Completion   December 2023 June 2024

Funding and Budget Info
2024
2023
2022
2021
2020
2019