Plan Room

Plan Room

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  • Hornsby Bend Biosolids Management Plant Headworks Improvements

    Owner: City of Austin

    Engineer: STV, Inc.

    Estimate:$24,099,300.00

    Bid Date: July 30, 2026

    Project Description: This construction project generally consists of the following work: demolishing the existing Headworks and constructing a replacement Headworks. The new Headworks will increase screening capacity, provide odor control, & replace critical screening and electrical infrastructure that are severely corroded & unsafe. 

    Document(s): 

    Proposals at due no later than Tuesday, July 28th at 4:00pm.

  • Hornsby Bend Ammonia Removal Facility And Drainage Improvements

    Owner: City of Austin

    Engineer: Stantec

    Estimate:$31,975,308.00

    Bid Date: August 6, 2026

    Project Description: The anaerobic digestion process to treat wastewater sludge produces a side stream with high ammonia and nitrogen concentrations. This side stream flow is from the Dewatering Facility which currently discharges directly to the on-site pond system. To treat this high strength ammonia and to meet environmental regulatory requirements a new on-site Ammonia Removal Facility is required. It is projected that this facility will significantly reduce the high ammonia load by 80 to 90%. Improve existing drainage and storm water management systems at Hornsby Bend Biosolids Management Plant. These drainage improvements are required to provide positive drainage for the proposed (future) Ammonia Removal Facility (3164.125). CIP 3164.125 and 3164.094 are being permitted and bid together as one project. 

    Document(s): 

    Proposals at due no later than Tuesday, August 4th at 4:00pm.