STRATEGIC PRIORITY: Mobility Solutions, Infrastructure, and Sustainability
AGENDA DATE: September 23, 2020
COUNCIL DISTRICT(S): 6, Outside City Limits
DEPARTMENT: Water Utilities Department
EXECUTIVE: Majed Al-Ghafry
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SUBJECT
Title
Authorize a construction contract for improvements to the ozone generation facilities at the Bachman, East Side, and Elm Fork Water Treatment Plants - Archer Western Construction, LLC, lowest responsible bidder of two - Not to exceed $36,420,755.00 - Financing: Water Capital Improvement D Fund
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BACKGROUND
Dallas Water Utilities (DWU) operates three potable water treatment plants (Bachman, East Side, and Elm Fork) and provides water to approximately 2.5 million residents in the City of Dallas and neighboring communities. The combined treatment capacity of these facilities is approximately 900 million gallons per day. Ozone is the primary water treatment disinfectant at all three plants and allows DWU to comply with federal regulations governing disinfection by-products and improves the finished water quality by destroying taste and odor causing compounds. The first ozone system was installed at the Elm Fork Water Treatment Plant in the early 1990's and ozone facilities were added to the East Side and Bachman Water Treatment Plants in 2002 and 2006 respectively.
An evaluation of critical performance limiting factors was completed at each plant, which identified the need to replace the ozone generating equipment. In response, DWU completed engineering designs to make specific improvements to the ozone facilities at each treatment plant. This action authorizes the replacement of the ozone generating equipment and appurtenances at the Bachman, East Side, and Elm Fork Water Treatment Plants. Included in the project are three new generators and associated equipment at Bachman, four new generators and associated equipment at East Side, and four new generators ...
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