COUNCIL COMMUNICATION
TO: Honorable Mayor and Council
FROM: Philip Porter, Project Manager
SUBJECT:Title
Action: Change Order No. 3 to Construction Contract for the Mulberry Treatment Plant Roof Replacement Project with T.R. Orr, Inc. (Phil Porter)
Body
FUNDING SOURCE:
Capital Improvement Plan - Wastewater Utility Fund
PURPOSE:
To consider approving Change Order No. 3 to add “1 additional Roof Anchor Fall Protection Device,” to the Mulberry Treatment Plant (MTP) Roof Replacement Project (Contract 500675) in accordance with City Code §§ 3.10.010.2 (A.R.S. Title 34) and 3.10.020.6.
BACKGROUND:
The built-up asphalt roof at the Mulberry Treatment Plant Headworks Building has deteriorated beyond its useful service life and requires full replacement. The existing roof drains and rain leaders have presented ongoing issues. Replacement of these drainage components, including associated piping, is also necessary to ensure proper water management and prevent further structural degradation.
On July 8, 2025, City Council awarded the MTP Roof Replacement Project to T.R. Orr, Inc., in the amount of $152,000. On October 28, 2025, City Council approved a change order to upgrade the standard paint to an epoxy coating to enhance durability and extend the service life of the facility. This Change Order 3 adds an additional fall protection device to the roof anchor system, providing an anchor point for working at elevated heights.
COMMUNITY IMPACT:
Restoring the roof of the MTP Headworks Building will eliminate a source of ongoing maintenance and environmental exposure, reducing the risk of water infiltration and structural damage. Replacement of the deteriorated roof and associated drainage systems will enhance overall site safety, reduce liability, and contribute to the long-term preservation of public infrastructure. This investment supports responsible stewardship of community assets and helps maintain the integrity and appearance of the surrounding area.
FISCAL IMPACT:
Funding in the amount of $1,889 is allocated and available for this project in the Fiscal Year 2025-26 Capital Improvement Plan utilizing Wastewater Utility Funds.
ATTACHMENTS:
Change Order No. 3
SUGGESTED MOTION:Recommended ACtion
I move to approve Change Order No. 3 to the Construction Contract for the MTP Roof Replacement Project with T.R. Orr, Inc., in the amount of $1,889.