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File #: 19-1847    Version: 1 Name:
Type: CONSENT AGENDA Status: Agenda Ready
File created: 11/7/2019 In control: Water Utilities Department
On agenda: 1/22/2020 Final action:
Title: Authorize Supplemental Agreement No. 1 to the professional services contract with Garver, LLC to provide design and additional engineering services required for major maintenance and rehabilitation improvements at Dallas Water Utilities' raw water system facilities - Not to exceed $4,949,190.00, from $1,637,463.00 to $6,586,653.00 - Financing: Water Capital Improvement E Fund
Indexes: 200, 9
Attachments: 1. Maps, 2. Resolution
Date Ver.Action ByActionResultAction DetailsMeeting DetailsVideo
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STRATEGIC PRIORITY: Mobility Solutions, Infrastructure, and Sustainability
AGENDA DATE: January 22, 2020
COUNCIL DISTRICT(S): 9, Outside City Limits
DEPARTMENT: Water Utilities Department
EXECUTIVE: Majed Al-Ghafry
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SUBJECT

Title
Authorize Supplemental Agreement No. 1 to the professional services contract with Garver, LLC to provide design and additional engineering services required for major maintenance and rehabilitation improvements at Dallas Water Utilities' raw water system facilities - Not to exceed $4,949,190.00, from $1,637,463.00 to $6,586,653.00 - Financing: Water Capital Improvement E Fund

Body
BACKGROUND

The initial phase of this project identified 10 raw water facilities for evaluation based on their age and condition, impact to system, reliability, cost to operate, and frequency of repairs. The facilities included intake structures, screening equipment, pump stations, valves, and pipelines located at the Tawakoni Balancing Reservoir and at intakes along the Elm Fork of the Trinity River and three Dallas Water Utilities (DWU) water supply reservoirs: Lake Ray Hubbard, Lake Tawakoni, and Lake Fork. Services included condition assessments, prioritization of needs, cost analyses of replacement or repair, and development of a business risk exposure value for each element of the water supply system evaluated. An asset management inventory with a risk-based scoring system was developed to determine the near term and future prioritization and phasing of improvements to the raw water facilities.

Supplemental Agreement No. 1 is for the second phase of the project to provide specialized investigations and evaluations identified during the initial phase and detailed engineering designs of critical raw water facility improvements. In addition, detailed field investigations, modeling and operational assessments for the Forney Dam at Lake Ray Hubbard are included in the scope of services ...

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