Lewiston Civicplus #2026-049

Lewiston CSO Outfall Flow Metering Services Solicitation

The City of Lewiston Department of Public Works is seeking a contractor to provide comprehensive flow metering services for eight combined sewer overflow (CSO) outfall pipes. - Government Buyer: - City of Lewiston, Department of Public Works, Engineering Division - Scope of Work: - Installation, maintenance, and monthly data download for eight area/velocity flow meters in CSO overflow pipes - Installation and maintenance of second level sensors in CSO manholes for overflow confirmation - Provision of wireless communication modules for real-time, web-based data access and high-level alarms (email and text) - Installation and maintenance of four rain gauges with wireless communication - All equipment to be owned, installed, and maintained by the contractor - Data & Performance Requirements: - Real-time data collection at five-minute intervals - Minimum 95% continuous metering uptime - Redundant sensors for overflow confirmation - Wireless communication for data and alarms - Web-based data access for the City - Additional Requirements: - In-situ calibration and on-site visits for installation and service - Ability to provide temporary metering services with two weeks' notice - All necessary traffic control, repairs, and maintenance included - Detailed product data and spec sheets for proposed equipment required in proposals - Quantities: - 96 meter-months each for flow meters, second level sensors, and wireless communication - 48 meter-months for rain gauges - No specific OEMs are mandated; vendors must propose suitable equipment and provide technical documentation.

Description

The City of Lewiston is soliciting proposals from vendors/contractors to assist with collecting accurate full-time flow data for each of the City’s eight combined sewer overflow outfall pipes. The contract duration is three years through September 30, 2029, with an option to extend annually for three additional one-year contracts. The project involves installation, maintenance, and data provision of flow meters and rain gauges with wireless communication and real-time alarming capabilities. Proposals are due by September 9, 2026, at 2:00 PM, and the contract includes service and data management requirements.

View original listing