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Engineers recommend 12 MGD Hilltop water plant as planning costs near $120 million; council presses for tighter estimates
Summary
HDR engineers recommended an optimized conventional 12 million‑gallon‑per‑day Hilltop Water Treatment Plant, presenting a Class 5 planning estimate of roughly $116 million (about $120 million with CMAR fees) and describing the project as modular and expandable; council members pressed for more precise costing and clarified next steps with TWDB/SRF reviews.
Engineers from HDR told the City of Mineral Wells council that an optimized conventional design (their “Alternative 3b”) best balances cost, reliability and operations for the Hilltop Water Treatment Plant, and they recommended sizing the plant at 12 million gallons per day rather than the earlier 16 MGD concept.
Corey Shockley of HDR introduced the feasibility work and said the firm and city staff had re‑evaluated demand and wholesale contract uncertainty, which supported the move to a 12 MGD planning basis. Ashley Eastman of HDR said the team compared 10 alternatives across nonmonetary criteria such as reliability, constructability and O&M burden and ranked each option. “Alternative 3b is an optimized conventional treatment,” Eastman said, adding that the approach is similar to the existing process, is familiar to current operators and can be expanded modularly if growth accelerates.
Why it matters: HDR…
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