Title
(CONTINUED FROM JUNE 26, 2024) - 91st Avenue Wastewater Treatment Plant Solids Rehabilitation Phase I - Engineering Services Amendment - WS90100111 (Ordinance S-51069)
Description
Request to authorize the City Manager, or his designee, to execute an amendment to Agreement 152491 with Arcadis U.S., Inc. to provide additional Engineering Services for the 91st Avenue Wastewater Treatment Plant Solids Rehabilitation Phase I 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 $500,000.
Report
Summary
The purpose of this project is to rehabilitate the facilities and equipment used to treat and process solids at the 91st Avenue Wastewater Treatment Plant (WWTP), including replacement of equipment throughout the solids treatment process.
This amendment is necessary to provide additional design and construction administration and inspection services to replace the dome on Digester 16. This amendment will provide additional funds to the agreement.
The 91st Avenue WWTP 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. 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 $5,430,000, including all subconsultant and reimbursable costs.
- An amendment was approved for an additional $5,000,000, including all subconsultant and reimbursable costs, for a new total amount not to exceed $10,430,000.
- This amendment will increase the agreement by an additional $500,000 for a new total amount not to exceed $10,930,000, including all subconsultant and reimbursable costs.
Funding for this amendment is available in the Water Services Department's Capital Improvement Program budget utilizing SROG funds. 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 SROG Advisors authorized the project on June 10, 2020.
The City Council approved:
- Engineering Services Agreement 152491 (Ordinance S-46821) on July 1, 2020; and
- Engineering Services Agreement 152491 Amendment (Ordinance S-49634) on May 3, 2023.
Location
91st Avenue Wastewater Treatment Plant
Council Districts: 7
Department
Responsible Department
This item is submitted by Deputy City Managers Ginger Spencer and Inger Erickson, the Water Services Department and the City Engineer.