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Kyle council approves design amendment to speed wastewater plant expansion; council presses on odor controls
Summary
Council approved a $15.49 million amendment to the STV design contract to deliver an early-works package that will add 2.5 million gallons per day (MGD) of treatment capacity sooner and a later final works package to reach 9 MGD; council members stressed odor control funding and timeline.
The Kyle City Council on Feb. 18 approved Amendment No. 2 with STV (CPNY d/b/a/ DB Infrastructure referenced in staff backup) for final design, mid-phase and construction-phase services for the Wastewater Treatment Plant Phase 2 expansion. The amendment adds approximately $15,486,908.03 to the project for a total contract amount of $17,783,101.71.
What the amendment does: The approved scope splits the expansion into an early works package (EWP) and a final works package (FWP). The EWP will add about 2.5 MGD and include disc filtration, basin refinishing and landscaping and is scheduled to come online in July 2026; the FWP adds an additional 2.0 MGD and includes odor control, grit removal, aeration basin clarifiers, digesters and phosphorus removal chemistry, with an expected completion in May 2028.
Why it matters: City staff said the phased approach will deliver the first additional capacity about 22 months sooner than waiting for a single full expansion. Council members repeatedly pressed staff and the engineering team about odor control measures and timeline for installations.
“The 3.6 million dollars is all-encompassing” for odor control, said Director Mike Murphy, answering council questions about whether funds were set aside specifically for odor abatement. Lindsey Webb, the STV engineer, told council the full works package will include biological scrubbers/disinfection systems at the headworks and other front-end locations “to hone in on the capacity that we need.”
Council discussion: Councilmember Azuga (speaker in the transcript) asked for confirmation that the $3.66 million earmarked for odor control targeted the front-end headworks where nuisance odors originate; staff and STV confirmed the design includes multiple scrubber systems and other features. Councilmember Hauser noted temporary measures already in place and asked when new media and scrubbers would be installed; staff said the temporary systems are performing and additional material deliveries were expected soon.
Financials and schedule: Staff said funding is available in the adopted budget and recommended approval. The early works package construction award is anticipated in late 2025 with construction and pre-procurement steps for the final works package following in 2026.
Outcome and vote: Council approved the amendment on a 7–0 vote.
Ending: Staff said the phased plan balances near-term capacity needs and regulatory deadlines with long-term system upgrades. Council asked staff to continue to report on odor-mitigation progress as work proceeds.
