Title
Val Vista Transmission Main Rehabilitation - Construction Manager at Risk Construction Phase Services Amendment - WS85500437 (Ordinance S-44510)
Description
Request to authorize the City Manager, or his designee, to execute Amendment 2 to Contract 144854 with Achen-Gardner Construction, LLC to provide additional Construction Manager at Risk (CMAR) construction services for the Val Vista Transmission Main Rehabilitation 2016 project. The fee for services will not exceed $9,450,000. Further request authorization for the City Controller to disburse all funds related to this item.
Report
Summary
The Val Vista Transmission Main includes pipe sizes ranging from 72 inches to 108 inches in diameter. A scoping analysis was completed on the Val Vista Transmission Main in 2016, which determined approximately 4,898 linear feet of 90-inch to 96-inch transmission main needed slip-lining. Additional sections will be rehabilitated in future construction phases.
Achen-Gardner Construction, LLC will assume the risk of delivering the project through a Guaranteed Maximum Price (GMP) contract. The CMAR services will include performing the designated rehabilitation of the Val Vista Water Transmission Main slip-lining per plans and specifications, procurement of materials and equipment, coordination with City of Phoenix Water Operations and the City of Mesa, and management of all construction-related contracts while meeting City bid requirements, including implementation of the local and Small Business Enterprise participation goal. A Small Business Enterprise goal of one percent has been established for this project.
Procurement Information
Achen-Gardner Construction, LLC was chosen to provide CMAR Services for this project using a qualifications-based selection process according to section 34-603 of the Arizona Revised Statutes (A.R.S.). Scoring and selection were made in conjunction with the CMAR Design Phase Services procurement process.
Contract Term
The term of the additional construction services is for two 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 of the contract. No additional contract work scope changes may be executed after the end of the contract term.
Financial Impact
The contract will be increased by $9,450,000 for a total contract value not to exceed $18,224,973.78, including all subcontractors and reimbursable costs.
The initial contract was established at a not-to-exceed amount of $24,973.78 to provide GMP Preparation Services. Contract Amendment 1 for Construction Phase Services was executed and increased the contract capacity by $8,750,000, for a revised contract value of $8,774,973.78. Contract Amendment 2 will now add $9,450,000 in additional construction services for a new contract value of $18,224,973.78. Funding for these services is available in the Water Services Department's Capital Improvement Program budget. Contract payments may be made up to the contract limits for all rendered contract services, which may extend past the contract termination.
Concurrence/Previous Council Action
City Council approved the CMAR Design Phase Services Contract 144855 on April 19, 2017.
City Council approved the CMAR Construction Services Contract 144854 on April 19, 2017, and Amendment 1 to Contract 144854 on May 31, 2017.
Location
Rio Salado Parkway and Tempe Canal (SRP) (Mesa, Ariz.), Center Street and Inglewood Street (Mesa, Ariz.) and Mesa Drive and Jensen Street (Mesa, Ariz.).
Council District: Out of City
Department
Responsible Department
This item is submitted by Deputy City Managers Karen Peters and Mario Paniagua, the Water Services Department, and the City Engineer.