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Cl) F a 0 u H W a - m r i H 3 ri 3 i v o > Lo > 00 of Ll W U
Mayor Robert E. Simison
ILIA City Council Members:
EN� Luke Cavener
Liz Strader
Brian Whitlock
Doug Taylor
John Overton
Anne Little Roberts
TO: Mayor Robert E. Simison
Members of the City Council
FROM: Laurelei McVey, Public Works Director
DATE: 03/09/2026
SUBJECT: FY26 NET ZERO BUDGET AMENDMENT FOR THE TERTIARY
FILTER EQUALIZATOIN TANK RECOAT PROJECT
REQUESTED COUNCIL DATE: 03/17/2026
I. RECOMMENDED ACTION
A. Move to:
1. Approve the net zero budget amendment for the Tertiary Filter Equalization
Tank Recoat Project.
2. Authorize the Mayor to sign the agreement
II. DEPARTMENT CONTACT PERSONS
Laurelei McVey, Director of Public Works 208-489-0365
III. DESCRIPTION
A. Background
The Public Works Department is completing a planned FY26 project to
rehabilitate, repair, and recoat the old Reclaimed Water bolted steel tanks to be
used as equalization tanks for the new Tertiary Filtration project. The Tertiary
Filtration Project is a permit required project necessary to meet the 2027 IPDES
discharge permit limits and is currently under construction. Using the old
Reclaimed Water tanks as flow equalization is an important cost saving measure
to allow the City to install fewer tertiary filtration membrane skids to meet peak
flows.
Page I of 2
The Department analyzed the interior of the tanks to estimate the necessary
rehabilitation work needed; however,there was additional corrosion on the ceiling
bolts and support brackets that was not visible until side panels on the tanks were
removed to allow for the rehabilitation work.
The cost of repairing these additional tank components is $133,500.
Failure to rehabilitate the ceiling bolts and brackets could result in an eventual
collapse of the tank roofs.
B. Reason for Amendment
The contractor is currently working on the tanks which are drained, out of service,
and have the side panels removed. It is advantageous to compete this unanticipated
additional work now rather than waiting for FY27.
IV. IMPACT
There is currently over $1.9M of uncommitted remaining contingency funding in
the Tertiary Filtration Project. That project is nearing completion (est Oct 2026)
and is not expected to utilize all of the remaining contingency funds.
This budget amendment proposes to move $133,500 from the Tertiary Filtration
Project to the WRRF Plant Maintenance account (where the tank recoat project is
funded) to complete this work. These tanks will be a critical component to the
Tertiary Filtration process once operational.
Tank Recoating Project
Original Project Budget(FY26 Budget Request) $366,700
Additional Funding Needed to Complete Work $133,500
Total Project Budget 1 $500,200
Tertiary Filtration Project Funding
FRemaining Uncommitted ContingencyFundin -$1.9M
V. ALTERNATIVES
Delaying the additional rehabilitation work is possible; however, it has several
disadvantages that should be considered. It will likely be more expensive to have a
contractor remobilize to the site and perform the work at a later date. Taking the tanks
down at a later date will be more complicated since the Tertiary Filtration Project will
be completed at that time and the tanks will be in use requiring a process flow shut
down which could impact permit compliance.
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