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Agenda Item: 8(e) |
Prepared By: Jeffrey E. Poteet, General Manager, Water & Sewer |
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Business: Consent Agenda Item |
Department: Water & Sewer |
Subject:
Title
Authorize the City Manager to Issue a Purchase Order to Apex Companies, LLC. for the Rehabilitation of Groundwater Well RO-04 in the amount of $132,100.00 - Jeffrey E. Poteet, General Manager, Water & Sewer Department.
Body
BACKGROUND:
The City of Marco Island’s South Water Treatment Plant (SWTP) utilizes a reverse osmosis (RO) membrane treatment process to treat brackish groundwater for the City’s groundwater supply system. Groundwater Well RO-04, located at the South Water Treatment Plant, is a critical component of the City’s water production infrastructure.
In late 2025, staff observed a significant increase in the salinity levels within the well, indicating a potential integrity issue within the well casing. As a result, a purchase order was issued to Apex Companies, LLC, through its subsidiary, Water Science Associates, Inc, to conduct geophysical logging and video survey investigations of Well RO-04. The investigation was carried out in April 2026. The technical report identified saline intrusion entering the well through an open hole located approximately 526 feet below the top of casing. To address the issue and restore the well’s integrity and operational reliability, Apex submitted a proposal dated August 4, 2026, to provide hydrogeological and well development services. The proposed work includes conducting 16-hour of suction airlifting, followed by 24-hour surge direct airlifting, to remove the accumulated sand and restore the well’s production capacity. The detailed scope of work is included in the attached Apex’s proposal.
The total proposed cost for the project is $132,100, consisting of $96,100 for well development and testing services and $36,000 for field oversight by a professional hydrogeologist and preparation of the development plan. The work will be performed under the City’s existing professional services agreement with Apex Company LLC. / Water Science Associates, Inc. for Water and Wastewater Engineering Services.
FUNDING SOURCE / FISCAL IMPACT:
Funding for the proposed rehabilitation and liner installation is available within the approved FY2026 Water and Sewer Capital Improvement Program under GL Account No. 430-5300-5336-606400-20012, Well Maintenance Program.
RECOMMENDATION:
Staff recommends that City Council approve the purchase order to Apex Companies, LLC in the amount of $132,100 for the Rehabilitation of Groundwater Well RO-04 and authorize the City Manager to execute all necessary documents associated with the project. The proposed remediation will restore the integrity and reliability of Well RO-04, protect the City’s potable water supply infrastructure, and minimize the potential for continued saline intrusion into the well
POTENTIAL MOTION:
“I move to approve the purchase order to Apex Companies, LLC in the amount of $132,100 for the Rehabilitation of Groundwater Well RO-04 and authorize the City Manager to execute all necessary documents related to the project.”