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ITEM 25

City Council Memorandum Public Works & Utilities Memo No. CP24-107

Date:

February 22, 2024

To:

Mayor and Council

Thru:

Joshua H. Wright, City Manager
Andy Bass, Deputy City Manager
John Knudson, Public Works and Utilities Director
Daniel Haskins, CIP Engineering Senior Manager

From:

Sandra Story, Engineering Project Manager

Subject:

Professional Services Agreement No. WW2401.201, with Wilson Engineers, LLC, for the Water Reclamation Facility Improvements Phase 3 Design Services

Proposed Motion:

Move City Council award Professional Services Agreement No. WW2401.201, to Wilson Engineers, LLC, for the Water Reclamation Facility Improvements Phase 3 Design Services, in an amount not to exceed $2,574,080.

Background/Discussion:

The Airport Water Reclamation Facility (AWRF), located at 905 E. Queen Creek Road, was originally built in 1998 and the Ocotillo Water Reclamation Facility (OWRF), located at 3333 S. Old Price Road, was originally built in 1985. Both facilities have aging infrastructure that require replacement and rehabilitation of existing equipment and/or structures. This third and final planned phase of improvements addresses all major prior recommendations identified in previous studies.

Phase 1 consisted of improvements at AWRF that include retrofitting of existing mono-media filters with disc filters, process air system upgrades and a new maintenance building. Phase 2 consisted of improvements at OWRF that included the optimization of plant hydraulics and the secondary treatment process, replacement of existing traveling bridge filters with disc filters, the addition of a 105 MG capacity reservoir and site wide electrical upgrades. Design for both phases commenced in August 2019, with construction coming to completion this March 2024.

Improvements at AWRF include the addition of a sixth disc filter, replacement of the aeration basin diffusers, and rehabilitation of clarifiers. Improvements at OWRF include significant rehabilitation of electrical gear, additional pumps, clarifier rehabilitation, and other ancillary improvements. The project scope of work consists of multiple phases including preliminary design, detailed design, permitting improvements, agency coordination, and construction delivery method assistance. The agreement completion time is 545 calendar days following Notice to Proceed.

Evaluation:

On October 10, 2023, city staff issued Request for Qualifications No. WW2401.201, for the Water Reclamation Facility Improvements Phase 3 project. Notification was sent to all registered vendors. One statement of qualifications was received from the following offerors:

Wilson Engineers, LLC

Although one company submitted for consideration on this project, an evaluation subcommittee of staff reviewed and scored the proposal individually. The proposal received an outstanding score and, pursuant to the CIP manual, it is recommended that the city start negotiations with Wilson Engineering. The evaluation committee evaluated the statements of qualifications and recommends awarding to Wilson Engineers, LLC, as the most qualified consultant in accordance with the evaluation criteria.

Fiscal Impact

Account No.

Fund Name

Program Name

Dollar Amount

CIP Funded Y/N

615.3910.6814.6WW621

Wastewater Operating

Water Reclamation Facility Improv.

$2,574,080

Attachments

Location Map

Agreement - Wilson Engineers, LLC