The work consists of a new biotrickling filter, associated ductwork and appurtenances at Primary Clarifier No. 1 and Primary Clarifier No. 2; a new biotrickling filter, associated ductwork, and appurtenance at the Digester Overflow Tank; New aluminum covers for Primary Clarifier No. 1, Primary Clarifier No. 2, and the Digester Overflow Tank; Improvements to existing fan and appurtenances at the Dewatering Building; and a new access road for the biotrickling filter at the primary clarifiers.

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