Title
Northwest Master Plan Package 4A 51st Avenue Force Main and Gravity Sewer - Construction Manager at Risk Preconstruction and Construction Services Amendment - WS90501004, WS90500307 and WS85500455 (Ordinance S-50753)
Description
Request to authorize the City Manager, or his designee, to execute an amendment to Agreement 154040 with McCarthy Building Companies, Inc. to provide additional Construction Manager at Risk Construction Services for the Northwest Master Plan Package 4A 51st Avenue Force Main and Gravity Sewer project. Further request to authorize execution of amendments to the agreement, as necessary within the City Council-approved expenditure authority as provided below, and for the City Controller to disburse all funds related to this item.
Report
Summary
The purpose of this project is for the City of Phoenix to construct a new sewer line beginning at Lift Station 77. The new sewer will consist of two 24-inch force mains that run approximately 8,400 linear feet (LF) south along the 51st Avenue alignment and will terminate into a new force main discharge structure. From the discharge structure, the sewer will transition from two 24-inch force mains to 36-inch gravity sewer. The new gravity sewer will continue approximately 15,560LF south along the 51st Avenue alignment, going under the Central Arizona Project (CAP) canal, to Pinnacle Peak Road. At Pinnacle Peak Road, the new gravity sewer will continue east approximately 2,640LF, where it will connect to the existing 36-inch gravity sewer near 47th Avenue.
This amendment is necessary as more contract time is needed as there was a delay in getting the design started due to internal ongoing discussion on the direction of the Cave Creek Wastewater Treatment Plant refurbishment. This amendment will provide additional time to fulfill the agreement.
Contract Term
The term of the agreement amendment is five years 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 value remains unchanged.
Concurrence/Previous Council Action
The City Council approved Construction Manager at Risk Preconstruction and Construction Services Agreement 154040 (Ordinance S-47422) on April 7, 2021.
Location
South along 51st Avenue, and continue to Pinnacle Peak Road, then to 47th Avenue
Council District: 1
Department
Responsible Department
This item is submitted by Deputy City Managers Ginger Spencer and Alan Stephenson, the Water Services Department and the City Engineer.