STRATEGIC PRIORITY: Transportation & Infrastructure
AGENDA DATE: September 25, 2024
COUNCIL DISTRICT(S): Outside City Limits
DEPARTMENT: Water Utilities Department
EXECUTIVE: Dev Rastogi
______________________________________________________________________
SUBJECT
Title
Authorize Supplemental Agreement No. 7 to the professional services contract with Black & Veatch Corporation for additional engineering services associated with water quality improvements at the East Side Water Treatment Plant - Not to exceed $1,949,796.00, from $23,920,885.00 to $25,870,681.00 - Financing: Water Capital Improvement G Fund
Body
BACKGROUND
Dallas Water Utilities (DWU) provides water to approximately 2.6 million residents in the City of Dallas and neighboring communities. DWU operates three (3) potable water treatment plants: Bachman, Elm Fork, and East Side. The combined treatment capacity of these facilities is nearly 900 million gallons per day (MGD). East Side Water Treatment Plant is the largest water treatment plant in the system.
In June 2006, DWU 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 for the implementation of recommended water quality improvements.
The initial professional services contract was approved by City Council on June 23, 2010 and was anticipated to be supplemented as work progresses to ensure a targeted approach. Projects that have been completed include the Flocculation and Sedimentation Basin Improvements (2014), Biological Filtration Optimization Improvements (2016), and Residuals Handling Improvements Program Phase 1 (2021). Six previous Supplemental Agreements have been executed on this contract with the most recent on June 23, 2021.
This action will authorize Supplemental Agreement No. 7 for engineering services associated with Phase 2 of the Residual Improvements Program at the East Side Water Treatment Plant.
The scope of work includes design and bid services for the Phase 2 construction package, development of a long-term residuals plan, prioritization for future residual handling improvements, and regulatory investigation to determine the permitting feasibility of repurposing the existing lagoons as monofils.
Future efforts will be required to complete the remaining residual handling improvements including construction phase services for the Phase 2 construction package, modification and improvements to the existing lagoons, pumping station improvements, and additional residual dewatering facilities. The ultimate improvements will allow for flexibility in the handling of residual solids and divides the higher quality waste streams for diversion of decant back to the treatment system, reducing raw water use.
ESTIMATED SCHEDULE OF PROJECT
Begin Services October 2024
Complete Services December 2025
PRIOR ACTION/REVIEW (COUNCIL, BOARDS, COMMISSIONS)
On June 23, 2010, the City Council authorized a professional services contract with Black & Veatch Corporation to provide engineering services for the East Side Water Treatment Plant water quality improvements by Resolution No. 10-1639.
On June 22, 2011, the City Council authorized Supplemental Agreement No. 1 to the professional services contract with Black & Veatch Corporation for additional engineering design services for the East Side Water Treatment Plant water quality improvements by Resolution No. 11-1737.
On October 24, 2012, the City Council authorized Supplemental Agreement No. 2 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 by Resolution No. 12-2673.
On September 10, 2014, the City Council authorized Supplemental Agreement No. 3 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 by Resolution No. 14-1486.
On May 25, 2016, the City Council authorized Supplemental Agreement No. 4 to the professional services contract with Black & Veatch Corporation to provide additional construction phase services for water quality improvements at the East Side Water Treatment Plant by Resolution No. 16-0829.
On September 25, 2019, the City Council authorized 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 by Resolution No. 19-1531.
On June 23, 2021, the City Council authorized Supplemental Agreement No. 6 to the professional services contract with Black & Veatch Corporation for additional engineering and construction phase services for water quality improvements at the East Side Water Treatment Plant by Resolution No. 21-1144.
FISCAL INFORMATION
|
Fund |
FY 2024 |
FY 2025 |
Future Years |
|
Water Capital Improvement G Fund |
$1,949,796.00 |
$0.00 |
$0.00 |
Original Contract $ 2,047,315.00
Supplemental Agreement No. 1 $ 3,995,000.00
Supplemental Agreement No. 2 $ 4,175,570.00
Supplemental Agreement No. 3 $ 6,284,000.00
Supplemental Agreement No. 4 $ 2,910,000.00
Supplemental Agreement No. 5 $ 3,223,000.00
Supplemental Agreement No. 6 $ 1,286,000.00
Supplemental Agreement No. 7 (this action) $ 1,949,796.00
Total Project Cost $25,870,681.00
M/WBE INFORMATION
In accordance with the City’s Business Inclusion and Development Policy adopted on September 23, 2020, by Resolution No. 20-1430, as amended, the M/WBE participation on this contract is as follows:
|
Contract Amount |
Procurement Category |
M/WBE Goal |
|
$1,949,796.00 |
Architecture & Engineering |
25.00%* |
|
M/WBE Subcontracting % |
M/WBE Overall % |
M/WBE Overall Participation $ |
|
34.15% |
34.15% |
$665,943.00 |
|
• This contract exceeds the M/WBE goal. |
|
• Supplemental Agreement No. 7 - 30.56% Overall MWBE participation |
|
• Black & Veach Corporation - Local; Workforce - 23.00% Local |
OWNER/EXECUTIVE
Black & Veatch Corporation
Ignacio Cadena, Associate Vice President
MAP
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