Consideration and Approval of Contract:  Rio De Flag Water Reclamation Plant Ultraviolet Disinfection System Replacement Project

Award of the contract will authorize the replacement of a necessary ultraviolet disinfection system at the Rio de Flag Water Reclamation Plant.  This is a necessary maintenance project in order to maintain proper operation of the Water Reclamation Plant and meet regulatory permit requirements. The original equipment has been in service for 23 years and replacement parts are no longer supplied for this system.   The new system is more energy efficient, providing increased disinfection while utilizing less power resources.  This disinfection system is a critical component of a greater treatment system that provides our community with a high quality reclaimed water product which has found many beneficial uses throughout our community and contributes to the conservation of Flagstaff's natural resources.

The Water Reclamation Plant has a capacity of 4MGD and this new system is capable of meeting the peak demand for disinfection requirements. This new disinfection system utilizes energy efficient design and takes advantage of innovative materials to reduce electrical consumption while providing a greater level of disinfection per kilowatt hour.
 

This project is budgeted in Account # 203-08-375-3319-0-4421 (FY2015) in the amount of $1,400,000 dollars, and budgeted funds have been carried forward into the FY2017. To date $169,611 have been spent on engineering fees and the access door, leaving $1,230,389 remaining in project fund balance.
 

COUNCIL GOALS:
1) Provide sustainable and equitable public facilities, services, and infrastructure systems in an efficient and effective manner to serve all population areas and demographics

REGIONAL PLAN:
WR.4.1. -  Logically enhance reclaimed water resources, treatment infrastructure sizing to accommodate planned growth and resource management.  This system is sized to accommodate increased demand at the Water Reclamation Plant.
E.I.4. -  Promote cost-effective, energy efficient technologies and design in industrial projects.  This system takes advantage of new and improved technologies and materials to increase efficiency and power delivery.
E.I.10. - Include energy efficient technologies in construction projects.  This project is eligible for APS Energy Savings Credits. 

None

• Approve the award as recommended
• Reject bids and re-advertise the project

The City of Flagstaff has two treatment plants for the wastewater generated within the utility service area, Wildcat Hill Waste Water Treatment Plant (Wildcat Hill WWTP) and Rio De Flag Water Reclamation Plant (Rio De Flag WRP). Rio De Flag WRP has a current design treatment capacity of 4.0 MGD and produces Class A+ effluent. Effluent from the plant is discharged to Rio De Flag wash and to the City's reclaimed water distribution system.  

The filtered effluent flows by gravity to two channel basins where the Ultra Violet (UV) system equipment is used for disinfection in order to meet Arizona Department of Environmental Quality (ADEQ) regulatory permit level requirements.

This equipment is critical to the Rio De Flag WRP operations. The equipment being purchased will replace an existing 23 year old piece of equipment used in daily operations. The City replacement criterion for this type of equipment at the City is a maximum of 20 years and the equipment being replaced meets that criterion. The equipment being presented to City Council for replacement purchase has been reviewed, evaluated and approved by the HDR Engineering, Utilities Management and maintenance staff

The award of the UV equipment system replacement project includes the following:

• Installation of new UV Disinfection equipment and all associated electrical upgrades. 
• Base bid Alternative; under this option the plant will remain online and will remain functional and operating at 1 MGD (partial capacity operations).

On October 3, 2016, Purchasing posted an Invitation for Bids (IFB) solicitation for construction services. The solicitation was also advertised in the local newspaper, Arizona Daily Sun, on October 8 and October 15, 2016. On October 25, 2016 four bids were received and opened in the Purchasing office. After a detailed review of all bids received, Felix Construction's bid was deemed to be the lowest responsive and responsible bid. Bids received are as follows:

Bidder                                     Base Bid               ADD Alternative      Total
Felix Construction                    $   987,618.00       $  58,022.00             $1,045,640.00
Schofield Civil Construction     $1,035,000.00       $  13,000.00             $1,048,000.00
Hunter Construction                 $1,292,000.00       $  78,000.00             $1,370,000.00
Currier Construction                 $1,319,800.00       $113,000.00             $1,432,800.00

This project is required in order to maintain our regulatory compliance with the Arizona Department of Environmental Quality(state) and meet existing permit requirements.

The existing Rio De Flag UV System Equipment has been in operation since 1993 and is at the end of it's useful life. Replacement parts and light bulbs are no longer available. A well functioning UV System is vital to the successful operation of a plant.

The Rio De Flag WRP UV System replacement project was approved and funded by Council in the FY 2017 budget.

Maintaining reclaimed water quality standards is a prime benefit to the community and existing reclaimed water customers.

Inform.