Sewer Collection Maintenance Support System

The Vendor is required to provide by on-call sewer collection system maintenance support contract is intended to supplement city staff in performing routine and emergency sewer system maintenance, addressing system deficiencies, and supporting proactive asset management efforts.
- Sewer collection system work, this contract may also include cleaning and maintaining the piping network at the city's plant, assisting with equalization basin cleaning, and performing other cleaning tasks as needed.
- Services include:
• Assistance with sanitary sewer overflow (SSO) response in the event of a failure beyond the city’s response capability or other sewer-related emergencies.
• Assistance with collection system main line bypass or other wastewater projects.
• Assistance with sewer line maintenance cleaning and CCTV inspection activities due to resource constraints and/or projects; CCTV reports and documentation must be provided in granite net software.
• Assistance with sewer lateral inspections and lateral launch.
• Cleaning/maintenance of piping network at the city's plant, assistance with cleaning of equalization basins, and cleaning of anaerobic digesters as needed. - Equalization basin cleaning
• The city has two equalization basins with high-density polyethylene (HDPE) liners.
• The contractor must not damage the liner during cleaning operations.
• If damage occurs, the contractor shall be fully responsible for repairing the damaged area at their own expense.
• The two basins have capacities of 1.6 million gallons and 1.4 million gallons; the city will be responsible for draining the liquid prior to cleaning.
- Anaerobic digester cleaning
• The facility includes three anaerobic digesters and one secondary digester (holding tank) that require periodic cleaning.
• Digester dimensions:
1. Digester 1, digester 2, and secondary digester: 45 ft. diameter, 22 ft. side water depth (SWD).
2. Digester 3: 60 ft. diameter, 22 ft. SWD.
• Hourly rate for equipment to include all associated costs, including fuel, mileage, related equipment, and supplies.
• Linear foot rate for services to include all associated costs, including staff, equipment, fuel, mileage, related equipment, and supplies.
• Provide proper supervision and appropriate traffic control at the job site during all phases of work.
• Ensure all work is performed safely, using appropriate personal protective equipment (PPE) and in compliance with city safety practices, agency regulations, and job-specific contractor requirements.
• If required, prepare an overflow emergency response plan specific to the task and in accordance with the city's overflow emergency response plan.
- Contract Period/Term: 1 year
- Questions/Inquires Deadline: March 19, 2025