Title
State Route 85 Landfill Methane Gas Design Services Amendment 1 (Ordinance S-44056)
Description
Request to authorize the City Manager, or his designee, to execute amendments to Contract 142747 with Tetra Tech BAS, Inc., to provide continued design services for the methane gas system at the City of Phoenix State Route 85 (SR 85) Landfill not to exceed an additional $3,540,000 in Council-authorized funding authority. Further request authorization for the City Controller to disburse all funds related to this item.
Report
Summary
Tetra Tech BAS, Inc., is a landfill specialty consulting firm that has been supporting public and private landfill operators for more than 30 years. The firm has been in the forefront of development of state-of-the-art landfill gas mitigation technologies including design of wells and probes, landfill gas blowers, landfill gas conveyance piping, flare stations, and condensate management systems.
Tetra Tech BAS, Inc.’s services include, but are not limited to: design and evaluation of vertical and horizontal gas collectors and interrelation of the systems, design of flare stations and all of their components, design services for various phases of the methane gas system to be compatible with the final cover and drainage system and landfill end uses, and general engineering services for closed landfills.
Procurement Information
Tetra Tech BAS, Inc., was chosen for this project using a qualifications-based selection process according to section 34-603 of the Arizona Revised Statutes. The City and Tetra Tech BAS, Inc., entered into Contract 142747 on Aug. 3, 2016.
Contract Term
The initial term of the contract is for one year with four one-year options to extend, for a total of five years. Contract work scope identified and incorporated into the contract prior to the end of the contract may be agreed to by the parties, and work may extend past the termination for work in progress. No additional contract work scope changes may be executed after the end of the contract term.
Financial Impact
Tetra Tech BAS, Inc.’s fee for design services under this contract will not exceed $4,540,000, including all subconsultant and reimbursable costs.
Staff will immediately execute Contract Amendment 1 in the amount of $1,540,000 to provide additional design services through Fiscal Year 2019. The total contract value will be increased from $1,000,000 to $2,540,000. Additional contract options to extend services through the total five-year duration of the contract will be exercised through future contract amendments at an amount not-to-exceed $2,000,000, which will be reviewed and approved separately by the Budget and Research Department.
Funding is available in the Public Works Department's Solid Waste Capital Improvement Program budget. Contract payments may be made up to contract limits for all rendered contract services, which may extend past the contract termination.
Concurrence/Previous Council Action
City Council approved Design Services Contract 142747 on June 1, 2016, for a not-to-exceed amount of $1,000,000, as well as the authority to execute contract options as necessary. This initial $1,000,000 approval covered the first one-year period of the contract which began on Aug. 3, 2016.
Location
The project is located west of State Route 85, east of Old US Highway 80 and south of Patterson Road in Buckeye.
Department
Responsible Department
This item is submitted by Deputy City Managers Karen Peters and Mario Paniagua, the Public Works Department, and the City Engineer.