Re-ADVERTISEMENT of REQUEST FOR BIDS
Orange Water and Sewer Authority
Mason Farms WWTP Fermenter Mixing Improvements
CIP Project No. 278-78
Issue Date: October 22, 2021

Orange Water & Sewer Authority (OWASA) is inviting contractors to submit a bids for
improvements at the Mason Farms Waste Water Treatment Plant (WWTP). This is a lump
sum bid with qualification requirements.
The complete advertisement for bidders is located on the OWASA web site (www.owasa.org) and may be downloaded at https://www.owasa.org/bid-opportunities.
The primary objectives of the project are to provide:

• Demolition of existing pipe and mixing headers and associated structural supports inside the fermenter tank.
• Demolition of submersible pumps, piping, and drip trap in the basement of the Old Digester Control Building.
• Excavation and demolition of underground fermenter gas condensate pipe.
• Installation of new mixing nozzles, pipe, and supports in the fermenter tank.
• Installation of a chopper pump in the basement vault of the Old Digester Control Building.
• Installation of new pipe, valves and supports in the basement of the Old Digester Control
  Building.
• Installation of new gas condensate accumulator and drain and vent piping.
• Repair and coating of corroded sampling hatches in the fermenter cover.
• Electrical improvements for power and controls of new equipment.
• Installation of new level and flow instruments and integration of new controls with the
  plant-wide SCADA system

Responses to the Request for Bids must be received by 11:00 a.m. on November 1, 2021.