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Engineers recommend building a new Bob Darrington wastewater plant after condition assessment finds widespread deterioration
Summary
A multi‑disciplinary condition assessment of Odessa’s Bob Darrington Water Reclamation Plant found structural decay, corroded oxidation ditches, obsolete electrical systems and reduced effective treatment capacity; engineers recommended constructing a new facility (phase 1 sized to the city's 12.7 MGD permit) with a preliminary construction estimate of $325M–$350M and a staff RFQ to follow.
Corolla Engineers presented the results of a condition assessment, process evaluation and facility master‑planning first phase for the Bob Darrington Water Reclamation Plant at the City of Odessa’s Dec. 9 work session, and concluded that the plant requires major capital investment and likely replacement.
Project manager Hajma Salim, process lead Toshio Shimada and design manager Steven Mendoza said the plant is largely composed of assets from the 1970s and early 1990s. Field inspections and document review showed structural deterioration (concrete spalling, settlement cracking), severely corroded oxidation ditches, unsafe walkways, obsolete motor control centers (some older than 30 years), PLCs that do not report to SCADA, and single points of failure in chlorine contact basins.
A capacity/process…
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