PILLAR: Sustainable
AGENDA DATE: April 8, 2026
COUNCIL DISTRICT(S): Citywide, Outside
DEPARTMENT: Dallas Water Utilities Department
PRIORITY: Infrastructure
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SUBJECT
Title
Authorize Supplemental Agreement No. 1 to the Construction Manager at Risk (CMAR) Agreement with Archer Western Construction LLC, to provide City's acceptance of Guaranteed Maximum Price Proposal 1 for construction services associated with the Improvement Component No. 1 portion of the Elm Fork Water Treatment Plant Water Quality Improvements Program, in an amount not to exceed $90,000,000.00 (which includes a CMAR contingency of $1,202,500.00 and an Owner's contingency of $1,790,500.00) - Not to exceed $90,000,000.00, from $4,087,120.00 to $94,087,120.00 - Financing: Water Capital Improvement F Fund ($56,000,000.00) and Water Capital Improvement G Fund ($34,000,000.00)
*In alignment with Water and Wastewater Capital Improvement Program.
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BACKGROUND
The Elm Fork Water Treatment Plant (EFWTP) located in Carrollton, Texas was originally constructed in the 1950s and is the second largest of three water treatment plants serving Dallas Water Utilities (DWU) customers. In 2006, DWU commissioned a water quality study that included the evaluation of finished water quality at each of its three water treatment plants. The recommendations included the implementation of biologically active filtration at each plant. DWU has successfully executed the implementation of these improvements at the East Side and Bachman Water Treatment Plants and is working to implement improvements at the EFWTP. The next steps include construction of a new filter complex and sedimentation basins, yard piping and two elevated storage tanks, presedimentation basins and plant influent improvements, electrical improvements, chemical improvements, and decommissioning of phased out facilities to convert treatment operations, improve finished water quality...
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