Wet Well Cleaning Annual Maintenance

The City of Columbia is seeking a contractor to perform annual maintenance and cleaning of wet wells throughout the sanitary sewer collection system. The contractor will be responsible for removing accumulated grease, grit, debris, rags, and other materials that can impede pump performance, reduce storage capacity, create odor issues, and contribute to equipment failures. The contractor must have a minimum of five years of direct experience in wet well cleaning and must provide a copy of their South Carolina General Contractors License and MACP Certification. The contract will be for a period of 365 consecutive calendar days, with an additional 180 days for contract closeout. The contractor must ensure compliance with all Federal, State, and Local ordinances pertaining to the type of work specified. Some key tasks and requirements include: • Cleaning of Dissolved Air Flotation (DAF) and lift station wet wells • Removal and disposal of all materials, debris, grit, and grease from the wet wells, connected piping, hardware, floats, monitors, components, etc. • Transportation and hauling of materials, debris, grit, and grease for proper disposal • Provision of digital copies of inspection and documentation of pre- and post-cleaning conditions • Compliance with OSHA requirements and regulations while operating in a confined space that requires a permit • Conformance to City of Columbia Engineering Regulations, including Part 15: General Specifications