Walnut Creek Wastewater Treatment Plant – Tertiary Filter Rehabilitation Project – Austin, Texas
Project Description:
This project addressed revisions to the existing filter basins to improve their performance.
It also included the addition of two new, separate clearwell structures to provide more available backwash water and assist with hydraulic operations.
The structural scope of work included:
Demolition and rebuilding of flume walls in the existing filter basins to accommodate new washwater troughs and higher water levels, the addition of two new 30-foot below-grade clearwell structures linked to the existing primary clearwell by three large-diameter connection pipes, the installation of a new permanent bulkhead wall separating the existing filter clearwell from the existing effluent conduit, A new blower building that resides at grade level above one of the clearwells, and a new covered sodium bisulfate storage facility.One of the challenges of this project involved working around existing large-diameter filter pipes that must
remain in service during construction. These size and location of these pipes restricted and helped to
define the shape of the new clearwells.
Services Provided:
Guerra Engineering provided complete structural engineering design and construction administration services.
Owner:City of Austin
Contact Person:Black and Veatch | Chris Dormier, P.E. & Carlos Chavez, P.E.
Date Completed:November 2020
Construction Cost:$14.5M
