STRATEGIC PRIORITY: Mobility Solutions, Infrastructure, and Sustainability
AGENDA DATE: August 12, 2020
COUNCIL DISTRICT(S):|910|DEPARTMENT: Water Utilities Department
EXECUTIVE: Majed Al-Ghafry
______________________________________________________________________
SUBJECT
Title
Authorize Supplemental Agreement No. 4 to the professional services contract with Carollo Engineers, Inc. to provide additional engineering services for water quality improvements at the Bachman Water Treatment Plant - Not to exceed $987,350.00, from $9,740,075.00 to $10,727,425.00 - Financing: Water Capital Improvement D Funds
Body
BACKGROUND
In June 2006, the Water Utilities Department initiated a two-part study to investigate the cause of water quality concerns, including rust colored water and inconsistent water quality, in parts of the water system. The study and requisite testing confirmed that the treated water chemically changes as it moves through the water distribution system. Recommendations included process changes, design, construction, and implementation of improvements at all three water treatment plants to improve water quality and deliver stable treated water into the distribution system.
In June 2010, Carollo Engineers was approved to perform engineering services at Bachman Water Treatment Plant (WTP) for water quality improvements. The Bachman WTP was constructed in the late 1920s and underwent expansions in 1936, 1948, and 2006. The plant can treat 150 million gallons of water per day and is Dallas' only water treatment plant located within the city limits. It provides treated water to areas north, south, and east of the plant. The recently completed water quality efforts have provided significant water quality improvements, leading to more stable water in the distribution system for areas served by the plant.
This action will authorize Supplemental Agreement No. 4 to the professional services contract with Carollo Engineers, Inc. for engineering assistance to...
Click here for full text