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8.E.

Meeting Date:	12/06/2022
From:	Brian Huntzinger, Water Production Manager

TITLE:

Consideration and Approval of Contract: Contract for Services & Materials with Goble Sampson Assoc., Inc. for a MIOX Mixed Oxidant On-Site Generator in the amount of $60,127, plus taxes and fees.

STAFF RECOMMENDED ACTION:

Approve the Contract for Services & Materials with Goble Sampson Assoc., Inc. for a MIOX Mixed Oxidant On-Site Generator in the amount of $60,127, plus taxes and fees; and
Authorize the City Manager to execute the necessary documents.

Executive Summary:

Water Production adds chlorine to all water sources in order to maintain water quality throughout the potable water distribution system. At Foxglenn/Sinagua Wells chlorine is added through the use of an on-site mixed oxidant generator made by MIOX. Over the last couple years the current generator has been having multiple issues requiring extensive maintenance and staff time to keep running; lately requiring resetting nearly every other day. This purchase is an in-kind, though upgraded, replacement of the current mixed oxidant generator made by MIOX. Replacing the generator will ensure water productions ability to safely and effectively deliver and maintain water quality.

Financial Impact:

This purchase was unbudgeted in the FY2022-23 budget. Budget appropriation within the Water Fund have been identified in accounts 202-08-301-1020-0-4229 and 202-08-301-1011-0-4224 within water production section budget to fund this purchase.

Policy Impact:

None.

Connection to PBB Priorities/Objectives, Carbon Neutrality Plan & Regional Plan:

Priority Based Budget Key Community Priorities and Objectives:

Sustainable, Innovative Infrastructure:
1. Deliver outstanding services to residents through a health, well maintained infrastructure system.
2. Utilize existing long-range plan(s) that identify the community's future infrastructure needs and all associated costs.

Carbon Neutrality Plan

CR-1: Ensure all mitigation actions improve Flagstaff's ability to adapt to the future.
CR-2: Strengthen existing community systems to create resilience to both short-term shocks and long term change.

Regional Plan

Goal WR.2. Manage a coordinated system of water, wastewater, and reclaimed water utility service facilities and resources at the City level and identify funding to pay for new resources. Policy WR.2.2 Maintain and develop facilities to provide reliable, safe, and cost effective water, wastewater, and reclaimed water services.

Goal WR.4. Logically enhance and extend the City's public water, wastewater, and reclaimed water services including their treatment, distribution, and collection systems in both urbanized and newly developed areas of the City to provide an efficient delivery of services.

Has There Been Previous Council Decision on This:

Foxglenn/Sinagua Wellhouse modifications (including generator replacement) were approved by Council on June 16, 2009. However, there most likely have not been council decisions specifically on mixed oxidant generator replacements before.

Options and Alternatives:

Approve the purchase of the in-kind replacement MIOX mixed oxidant generator; or
Do not approve the purchase and require that staff to pursue other options such as using chlorine gas at EPDS004 (Foxglenn/Sinagua Wellhouse).

Background/History:

In order to maintain water quality within the potable water distribution system water production adds chlorine to all potable water sources or Entry Points to the Distribution System (EPDSs). In most locations chlorine gas is used to provide chlorine to treated source water. Due to the proximity of nearby schools and the public chlorine gas is not used at EPDS004 (Foxglenn/Sinagua Wells) though and instead sodium hypochlorite and other oxidants are generated on-site through a mixed oxidant generator for additional safety. Water Production has been using MIOX on-site mixed oxidant generators for over twenty years. In the late 1990's EPDS004 was initially designed with a MIOX generator when only Foxglenn Well was supplying it. A decade or so later, in 2009 when Sinagua Well was added to the EPDS the MIOX generator in use was replaced with a larger capacity one. The current generator, now 13 years old, has been having multiple issues over the last couple years requiring extensive maintenance and staff time to keep running including: faulting daily on cell overtemp, issues with the metering pump, water float, solenoid and softeners. Replacing the current generator with an in-kind, upgraded, replacement generator will ensure water productions ability to safely and effectively deliver and maintain water quality to the public.

The Procurement Department has worked with Water Services to deemed this purchase proprietary and this product is the only one that can work with our current infrastructure.

Expanded Financial Considerations:

Using an on-site mixed oxidant generator, which requires only electricity, water and salt to operate, alleviates the necessity to purchase chlorine gas, which has increased in cost at least 4 times in the last year from vendors due to supply chain shortages, possible railroad strikes etc.

Attachments
Contract
Exhibit A - Quote