STRATEGIC PRIORITY: Mobility Solutions, Infrastructure, and Sustainability
AGENDA DATE: September 25, 2019
COUNCIL DISTRICT(S): Outside City Limits
DEPARTMENT: Water Utilities Department
EXECUTIVE: Majed Al-Ghafry
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SUBJECT
Title
Authorize Supplemental Agreement No. 5 to the professional services contract with Black & Veatch Corporation for additional engineering design, bid phase, and construction phase services for water quality improvements at the East Side Water Treatment Plant - Not to exceed $3,223,000.00, from $19,411,885.00 to $22,634,885.00 - Financing: Water Construction Fund
Body
BACKGROUND
In June 2006, Dallas Water Utilities initiated a two-part study to investigate water quality concerns and provide recommendations to improve water quality and stability. The study and requisite testing confirmed that the treated water chemically changes as it moves through the distribution system. The resulting Water Quality Report recommended the implementation of enhanced organic removal at all three water treatment plants including enhanced coagulation and biological filtration.
Black & Veatch Corporation was selected based on qualifications to perform engineering and design services at the East Side Water Treatment Plant in the implementation of recommended water quality improvements. The initial professional services contract was authorized by City Council on June 23, 2010 and was anticipated to be supplemented as work progresses to ensure a targeted approach. Four previous supplemental agreements have been executed on this contract with the most recent on May 25, 2016. This action includes design and bid services for the first phase of residuals handling improvements at the East Side Water Treatment Plant. Included in these residuals handling improvements is the design of additional residuals lagoons, infrastructure to accommodate removal of residuals in the existing lagoons that a...
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