Title
Zone 3D and 4A Improvements Program Water Treatment Plant Booster Pump Stations - Engineering Services Amendment - WS85100047, WS85110008, WS85100050, WS85100052, and WS85110006 (Ordinance S-52684) - District 1
Description
Request to authorize the City Manager, or the City Manager's designee, to execute an amendment to Agreement 148954 with Wilson Engineers, LLC to provide additional Construction Administration and Inspection Services for the Zone 3D and 4A Improvements Program Water Treatment Plant Booster Pump Stations Project. Further request to authorize execution of amendments to the agreement as necessary within the Council-approved expenditure authority as provided below, and for the City Controller to disburse all funds related to this item. The additional fee for services included in this amendment will not exceed $1,749,982.91.
Report
Summary
The purpose of this project is to replace the existing Finished Water Pump Station (FWPS) at the Deer Valley Water Treatment Plant (DVWTP) to provide resiliency for the water system and increase the plant's pumping capacity to supplement water in the northern portions of Phoenix's water service area. The City of Phoenix Water Services Department completed a study that identified infrastructure improvements to move water in the distribution system, as needed, in the event there are restrictions placed on Colorado River water delivered through the Central Arizona Project (CAP). The City of Phoenix treats CAP water at the Union Hills and Lake Pleasant Water Treatment Plants, which supply water to north Phoenix. Following completion of the Project, the new pump station at the DVWTP will be able to augment the water supply in areas that have typically received water from the City's CAP plants. In order to replace the FWPS, it will be necessary to move the existing chemical storage and feed facilities at the FWPS. The first phase of the Project will include relocation and demolition of the chemical facilities, and the second phase will include construction of the new FWPS.
This amendment is necessary because of the need to reprogram the timing of the construction of the Project due to a 22-month pause in the project, cost increases, and a change of the company that provided the Construction Manager at Risk services. This amendment will provide additional funds and time to the agreement.
Contract Term
The term of the agreement amendment is 975 calendar days from the issuance of the Notice to Proceed. Work scope identified and incorporated into the agreement prior to the end of the term may be agreed to by the parties, and work may extend past the termination of the agreement. No additional changes may be executed after the end of the term.
Financial Impact
The initial agreement for Engineering Services was approved for an amount not to exceed $11,590,000, including all subconsultant and reimbursable costs. This amendment will increase the agreement cost by an additional $1,749,982.91, for a new total amount not to exceed $13,339,982.91, including all subconsultant and reimbursable costs.
Funding for this amendment is available in the Water Services Department's Capital Improvement Program. The Budget and Research Department will separately review and approve funding availability prior to the execution of any amendments. Payments may be made up to agreement limits for all rendered agreement services, which may extend past the agreement termination.
Concurrence/Previous Council Action
The City Council approved:
- Engineering Services Agreement 148954 (Ordinance S-45172) on December 5, 2018;
- Construction Manager at Risk Preconstruction and Construction Services 155323 and 155324 (Ordinance S-47974) on October 6, 2021; and
- Engineering Services Amendment to Agreement 148954 (Ordinance S-49500) on March 22, 2023.
Location
31st Avenue and Dunlap Avenue
Council District: 1
Department
Responsible Department
This item is submitted by Assistant City Manager Ginger Spencer, Deputy City Manager Amber Williamson, the Water Services Department and the City Engineer.