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File #: 22-0368    Version: 1
Type: New Business Status: Passed
File created: 6/29/2022 In control: City Council
On agenda: 7/5/2022 Final action: 7/5/2022
Title: Approval of Change Order with Wolverine Supply Inc., for Valdez Elementary & High School Water Piping Replacement in the amount of $111,710.13.
Attachments: 1. CO #3 GMS waterpiping, 2. Final Report - Gilson Middle School CPVC Piping Failure Analysis 030221, 3. RFP #4 - MS Re-Piping, 4. GMS Piping Repairs Drawings - 100%
ITEM TITLE:
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Approval of Change Order with Wolverine Supply Inc., for Valdez Elementary & High School Water Piping Replacement in the amount of $111,710.13.
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SUBMITTED BY: Scott Benda, Senior Project Manager

FISCAL NOTES:
Expenditure Required: $111,710.13
Unencumbered Balance: $60,500 & $111,075
Funding Source: 350-0310-55000.1809 & 350-0310-55000.1810

RECOMMENDATION:
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Approve the Change Order with Wolverine Supply Inc., for Valdez Elementary & High School Water Piping Replacement in the amount of $111,710.13.
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SUMMARY STATEMENT:
Change Order Description: The Gilson Middle School has experienced numerous water leaks since original construction in '14. The school was plumbed with commercial grade, modern plastic piping, specifically, chlorinated poly vinyl chloride (CPVC) pipe. The first leak occurred in the boiler room a couple weeks after the school opened and was attributed to a fitting that was incorrectly glued together. Over the years other leaks occurred at other fittings resulting in localized water damage. In the spring of '21 a mechanical engineer was contracted to investigate the cause of the leaks. His report is attached. His findings concluded that thermal expansion and contraction in conjunction with incorrectly braced and supported piping was the cause. Contributing to that was an operational policy to turn off the hot water recirculating system during times the building was not occupied. This created a situation where the pipes would expand and contract with the temperature swings.
This change order will correct the bracing and pipe support issues throughout the school. Modifications and repairs have been designed (see attached drawings). Wolverine Supply with their mechanical subcontractor Valley Mechanical are the contractors who recently hold the contract for the water piping replacement work in both HHES and VHS. They have previously worked inside GMS and are familiar with the facility. They actually performed some of...

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