Pflugerville: City Council Issues RFQ to Expand Water Treatment Plant
Feature Photo (above): Lake Pflugerville, the reservoir from which the city draws and and treats is potable water supply.
by Art Benavidez
Pflugerville (Travis County) — Pflugerville issued a request for qualifications (RFQ) for engineering services to expand the city’s water treatment plant to 30 Million-Gallons-Daily–a project with an estimated $67 million cost.
The City of Pflugerville owns and operates the 17.7 MGD water treatment plant at 17601 Weiss Lane. This is a multi-phase project with a final goal of expanding to 75 MGD, but the current proposed expansion must get it to 30 MGD.
The expansion is to address deficits and needed improvements at the water treatment plant to conform to safety, compliance, technology improvements, and support future water demands.
The preferred engineering firm should have demonstrated expertise and competence in membrane water treatment process, for design and construction.
The project includes development of planning/preliminary design, design, bid and construction phase documents based upon the proposed treatment alternatives outlined within the city’s 2020 preliminary engineering report.
The project includes the expansion of the city’s Lake Pump Station and the High Service Pump Station to reach the 30 MGD target. The city also plans to develop an 800-foot pressure plane, which will be served by the expanded High Service Pump Station.
Pflugerville anticipates awarding the design contract by Nov. 10.
“We are anticipating kicking off the design by the end of this year and bidding the project by the end of 2021,” said Assistant City Manager Amy Giannini. “Right now in the budget there is a phase I and a phase II to the plant expansion.”
Those interested in submitting a solicitation of qualifications (SOQ) have until 4 p.m. Wednesday, September 23, 2020.
The water treatment plant at Weiss Lane (above) as it exists today. The site plan for how it would change (below), after expansion to 30 MGD. Source: City of Pflugerville.
Last Tuesday, the city council recently updated their professional services supplemental agreement with San Antonio-based environmental services firm Garver for over $1.2 million.
The agreement calls for Garver to continue to provide owner representative services associated with the surface water treatment plant expansion project. As the owner rep, Garver is an extension of the city staff and would provide ongoing support to push this “critical” project forward, according to Giannini.
Giannini said that the city initially entered into an agreement with the company in March.
Garver has proposed an increased resiliency of the water treatment plant system to handle the growth of invasive species, such as hydrilla and zebra mussels.
Garver has also suggested the elimination of the treatment system vulnerabilities that have contributed to recent Texas Commission on Environmental Quality corrective actions.
Last November, the city published, on their website, an official notice regarding treatment technique violations and said that the city water supply had been inadequately treated for much of the year.
The water treatment plant’s water membranes, which help process and clean the city’s water supply, were damaged by the presence of zebra mussels.
Zebra mussels are an invasive, freshwater species that multiply quickly and attach themselves to different underwater surfaces, posing a threat to water infrastructure, according to city officials.
Art Benavidez (Construction News Reporter, Central Texas) is a seasoned journalist with over 15-years of experience in writing breaking news and in-depth features at the local level. He honed his research and reporting skills in newspapers and magazines throughout South and West Texas along with expertise in crafting digital content as Managing Editor of New Image Marketing Research Corporation. Benevidez is a Texas native and graduate of UT-RGV.