Title
Sub-Regional Operating Group - 91st Avenue Wastewater Treatment Plant 1A Rehabilitation - Construction Manager at Risk Construction Services - Amendment - WS90100114 (Ordinance S-53163) - District 7
Description
Request to authorize the City Manager, or the City Manager's designee, to execute an amendment to Agreement 163272 with McCarthy Building Companies, Inc. to provide additional Construction Manager at Risk Construction Services for the Sub-Regional Operating Group 91st Avenue Wastewater Treatment Plant 1A Rehabilitation 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 $50 million.
Report
Summary
The purpose of this Project is to rehabilitate and replace assets throughout Plant 1A at the 91st Avenue Wastewater Treatment Plant and incorporate technologies and equipment. Rehabilitation and replacement of assets throughout the Plant 1A treatment train may include, but are not limited to: primary sedimentation, aeration, secondary sedimentation, reuse water system, disinfection, ancillary equipment and systems, and process air supply and distribution systems and electrical and control systems.
This amendment is necessary for the construction to rehabilitate and replace assets throughout Plant 1A at the 91st Avenue Wastewater Treatment Plant. This amendment will provide additional funds to the agreement.
The 91st Avenue Wastewater Treatment Plant Facility is owned by the Sub-Regional Operating Group (SROG) and operated by the City of Phoenix.
Contract Term
The term of the agreement remains unchanged at five years. 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 Preconstruction Services was approved for an amount not to exceed $750,000, including all subcontractor and reimbursable costs. This amendment will increase the agreement by an additional $50 million for a new total amount not to exceed $50,750,000, including all subcontractor and reimbursable costs.
Funding for this amendment is available in the Water Services Department's Capital Improvement Program budget.
Concurrence/Previous Council Action
The Sub-Regional Operating Group Advisors:
- Authorized the project on August 13, 2025.
The City Council approved:
- Engineering Services Agreement 162922 on May 7, 2025 (Ordinance S-51876).
- Construction Manager at Risk Preconstruction Services Agreement 163272 on May 21, 2025 (Ordinance S-51906).
Location
91st Avenue and W. Roeser Road
Council District: 7
Department
Responsible Department
This item is submitted by Assistant City Manager Ginger Spencer, Deputy City Manager Frank McCune, the Water Services Department and the City Engineer.