The purpose of Zone 2 Water Replacement Package project is to expand Charlotte Water’s ongoing water replacement program by expediting the replacement of older water mains that are of pipe materials known to have a high likelihood of failure. Through research of main break data, a group of neighborhoods have been identified with a high concentration of these water mains made from these pipe materials. This project will focus on the replacement of the galvanized steel pipe (GSP) and asbestos cement pipe (ACP) within the project area but will consider other mains within the scope areas as well if deemed necessary. For this project, Charlotte Water staff believes the Progressive Design-Build delivery method will be best.
This contract is for professional services in support of the Design and Construction Division. These contracts will allow Design and Construction to assist with LCR projects which typically require a longer and more complicated design process which in turn is more costly. Examples of reasons for increased cost in LCR projects versus typical street main extensions would be the need for geotechnical investigation or wetlands investigation and permitting.
This project will clean and apply a polymer coating to the interior walls of old, but still structurally sound cast iron water mains. Also included is the replacement of all valves, hydrants, and galvanized service lines associated with each project. The work completed in this contract will improve water quality and flow in the distribution system; consists of an undetermined number of individual projects consisting of water infrastructure rehabilitation; and/or replacements, which will be assigned by the Project Engineer.
Charlotte Water is seeking a Company to provide valve assessment, fabrication, and repair services for various valve sizes and types. The Company shall be experienced in assessing and repairing valves in water and wastewater applications. Size of valves to be serviced will range from 2 inches to 120 inches. Valves may be gate, butterfly, plug, cone, globe, or any other type located within the Charlotte Water Distribution System (water lines), Collection System (sewer lines), or any Treatment Facility (water and/or wastewater). Assessment and repair services are to occur on active mains that will remain active and in service during these processes. Charlotte Water will provide access to valves with excavation in accordance with Occupational Safety and Health Administration (OSHA) standards or existing vault/manhole. Valves to be repaired have yet to be determined and may be located anywhere geographically within Mecklenburg County. The Company shall operate and complete Services as directed by the Charlotte Water designated Engineer (CW Engineer).
Charlotte Water will be soliciting proposals from interested companies for siphon pipe inspection and cleaning services. Charlotte Water will be awarding a contract to perform planned siphon pipe inspections and cleaning on a re-occurring maintenance schedule with a standard frequency.
A Charlotte Water representative shall be present when the final cleaning runs are made to ensure cleanliness and will make the final decision on whether the cleaned siphon is acceptable or not. When available, construction drawings of the siphon(s) to be cleaned will be provided.