Title
Sub-Regional Operating Group Salt River Outfall Interceptor Rehabilitation, Project E - Engineering Services Amendment 1 - WS90160095 (Ordinance S-45717)
Description
Request to authorize the City Manager, or his designee, to execute an amendment to Agreement 146648 with Brown and Caldwell, Inc., to provide additional Engineering Services for the Sub-Regional Operating Group Salt River Outfall Interceptor (SRO) Rehabilitation - Project E 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 $170,686.
Report
Summary
The purpose of this project is to rehabilitate the Salt River Outfall Interceptor - Project E. The SRO extends from the confluence of the Indian Bend Wash and Tempe Town Lake and traverses across the southern portion of Phoenix to the 91st Avenue Wastewater Treatment Plant. The SRO is approximately 23 miles in length and has pipe that ranges from 54 inches to 84 inches in diameter. In addition, the SRO has approximately 191 manholes and structures. A condition assessment of the SRO was completed in 2014. The 2014 report divided the recommended rehabilitation into five projects: A, B, C, D and E. Engineering services are being sought for only Project E, which involves rehabilitation of 105 Grade 3 manholes along the length of the entire SRO.
This amendment is necessary to add additional funding for construction administration and inspection (CA&I) services. The original amount requested for CA&I services was an estimate. Now that the design is complete, and the engineer has prepared a complete scope and fee, additional funding is necessary to complete the project. This amendment will provide additional funds and time to the agreement.
Brown and Caldwell's additional services include, but are not limited to: administering the construction schedule, reviewing shop drawings and test results, issuing interpretations and clarifications, certifying contractor progress payments, conducting inspections, and providing post-construction services.
The SRO is owned by the Sub-Regional Operating Group and operated by the City of Phoenix.
Contract Term
The term of the agreement amendment is one year 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 executed for a fee not-to-exceed $460,000, including all subconsultant and reimbursable costs.
- Amendment 1 will increase the agreement value by an additional $170,686, for a new total not-to-exceed agreement value of $630,686, including all subconsultant and reimbursable costs.
Funding for this amendment is available in the Water Services Department's Capital Improvement Program budget. 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 Sub-Regional Operating Group Advisors approved the project on April 18, 2019.
The City Council approved Engineering Services Agreement 146648 (Ordinance S-44165) on Jan. 10, 2018.
Location
The manholes are located all along the alignment of the SRO, which starts at the convergence of Indian Bend Wash and Tempe Town Lake and ends at the 91st Avenue Wastewater Treatment Plant.
Council Districts: 6, 7 and 8
Department
Responsible Department
This item is submitted by Deputy City Managers Karen Peters and Mario Paniagua, the Water Services Department, and the City Engineer.