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File #: 24-3053    Version: 1 Name:
Type: CONSENT AGENDA Status: Agenda Ready
File created: 9/23/2024 In control: Dallas Water Utilities Department
On agenda: 11/13/2024 Final action:
Title: Authorize Supplemental Agreement No. 6 to the professional services contract with Arcadis CE, Inc. f/k/a Malcolm Pirnie, Inc. to provide additional engineering services associated with water quality improvements at the Elm Fork Water Treatment Plant - Not to exceed $7,497,216.00, from $34,063,406.00 to $41,560,622.00 - Financing: Water Capital Improvement G Fund
Indexes: 200
Attachments: 1. Map, 2. Resolution
Date Ver.Action ByActionResultAction DetailsMeeting DetailsVideo
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STRATEGIC PRIORITY: Transportation & Infrastructure
AGENDA DATE: November 13, 2024
COUNCIL DISTRICT(S): Outside City Limits
DEPARTMENT: Dallas Water Utilities Department
EXECUTIVE: Dev Rastogi
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SUBJECT

Title
Authorize Supplemental Agreement No. 6 to the professional services contract with Arcadis CE, Inc. f/k/a Malcolm Pirnie, Inc. to provide additional engineering services associated with water quality improvements at the Elm Fork Water Treatment Plant - Not to exceed $7,497,216.00, from $34,063,406.00 to $41,560,622.00 - Financing: Water Capital Improvement G Fund

Body
BACKGROUND

In June 2006, Dallas Water Utilities (DWU) initiated a study to investigate the cause of water quality concerns in parts of the water distribution system. The study and requisite testing confirmed that the treated water chemically changes as it moves through the water system. Recommendations to stabilize the water included process changes and the implementation of improvements at all three water treatment plants. Three firms, one firm for each water treatment plant, were selected to perform engineering and design services. It was anticipated that each firm would be awarded planned supplemental agreements as work progresses to ensure a targeted approach to design. Arcadis CE, Inc. f/k/a Malcolm Pirnie, Inc. was selected as the engineer for the Elm Fork Water Treatment Plant (EFWTP).

One major recommendation from the 2006 study included the implementation of biologically active filtration at each plant. DWU has successfully implemented biologically active filtration at the East Side and Bachman Water Treatment Plants and is working to implement these improvements at the EFWTP. The next steps include the completion of a new filter complex and sedimentation basins, pre-sedimentation basins and plant influent improvements, and chemical improvements to convert treatment operations, improve finished water quality, add...

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