Title
Val Vista Water Treatment Plant Rehabilitation 2018 Construction Manager at Risk - Construction Services Amendment - WS85230052 (Ordinance S-48695)
Description
Request to authorize the City Manager, or his designee, to execute an amendment to Agreement 151260 with Sundt Construction, Inc. to provide additional Construction Services for the Val Vista Water Treatment Plant Rehabilitation 2018 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 $892,301.
Report
Summary
The purpose of this project is to perform rehabilitation services at the Val Vista Water Treatment Plant (WTP). The Val Vista WTP is located on the south side of the Arizona Canal in the City of Mesa and has the capacity to treat 220 million gallons of water per day. The Water Services Department anticipates rehabilitation, replacement, or new construction of the following treatment systems which may include, but are not limited to: Chemical Feed Stations, East and West Plant Bar Screens, Solid Handling Facility Polymer Feed System, Sludge Collectors, East Plant Inlet Electrical Building-Switchgear, East Plant Sedimentation Basins 1-8 Launders, Ferric Chloride Bulk Storage Tanks, and East and West Plant Filters 1-8 Rebuild and Granular Activated Carbon Conversion.
This amendment is necessary for Sundt Construction, Inc. to provide additional services which include, but are not limited to: ferric chemical system, including pump room and containment area chemical resistant coatings, process controls changes including tank level indication, program logic controls upgrades and pressure sensor alteration; and the east inlet 5kV building feeder wire replacement, arc flash testing and Neta testing for alterations made to electrical gear. This amendment will provide additional funds to the agreement.
Contract Term
The term of the agreement amendment is 183 calendar days from 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 Construction Services was approved for an amount not to exceed $29.5 million, including all subcontractor and reimbursable costs.
- Change Order 1 was approved for an amount not to exceed $1,503,257, including all subcontractor and reimbursable costs.
- This amendment will increase the agreement by an additional $892,301, for a new total amount not to exceed $31,895,558, including all subcontractor 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 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 City Council approved:
- Preconstruction Services Agreement 147880 (Ordinance S-44756) on June 20, 2018; and
- Construction Services Agreement 151260 (Ordinance S-46190) on Nov. 20, 2019; and
- Construction Services Agreement 151260 - Amendment (Ordinance S-48217) on Jan. 5, 2022.
Location
Val Vista Water WTP
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.