Phase 1: South Ramp East (Construction)

This project involves significant airfield civil construction, including approximately 147,400 CY of unclassified excavation, 294,000 CY of embankment placement, and 239,000 SY of pavement removal. Key scopes include erosion and sediment control, installation of storm drainage systems (15″–66″ RCP), over 186,000 SY of PCC airfield paving, 75,500 TN of asphalt, 27,500 LF of electrical conduit, as well as airfield lighting, signage, and pavement markings.

Surface Water Quality Projects Support

The City has collected water quality data throughout the City limits and ETJ and developed 22 sub-watershed data matrices. Watershed modeling is nearly complete for one watershed, and watershed planning efforts are currently underway for two watersheds. The contracted firm will aid and support current and future watershed modeling and planning efforts.

The awarded firm will provide services for several pond and dam rehabilitation/stormwater control measures (SCM) projects. This will include initial feasibility studies, planning and design for projects that are not specified at this time. Additional tasks will include the evaluation and repair design of existing municipal SCM projects. These projects are anticipated to start scoping upon contract award. The selected firms will use HEC-HMS, HEC-RAS, SWMM, and/or a hydraulic grade line closed system computer model, or an approved alternative method. All methods will be in accordance with the Charlotte-Mecklenburg Storm Water Design Manual. The City’s then current AutoCAD standards will be used for production of all plans and profiles.

 

Centrifuge Repair and Maintenance Service

Company to provide the City Centrifuge Preventive Maintenance, Predictive Maintenance, and Repair Services for 2 (two) Dewatering Centrifuges and 2 (two) Thickening Centrifuges at the Mallard Creek Water Reclamation Facility, Westfalia and Humbolt Dewatering and Humboldt Thickening Centrifuges

Professional Engineering Services for the Sugar Creek East Equalization Basin, Pump Station, and Forcemain

The East Flow EQ Basin and Grit Facility, constructed in 1997, is located south of the treatment facility along Little Sugar Creek. During high flow events, wastewater flows south by gravity to the Excess Flow Control Chamber via a 54” line. In the Excess Flow Control Chamber, there is a gate that can direct flow to either the McAlpine Creek WWMF or to the Flow EQ Fill Pump Station. With the gate to McAlpine Creek WWMF line closed, wastewater enters the Flow EQ Fill Pump Station and is pumped to the East Fow EQ Basin for storage. Once the storm surge is complete and staff want to empty the East Flow EQ Basin, wastewater can then drain via gravity or Return Flow pumps to the Excess Flow Control Chamber, where it then flows by gravity to McAlpine Creek WWMF.

Owner’s Advisor for Lee S. Dukes WTP Expansion and Associated Infrastructure

Charlotte Water is soliciting Statements of Qualifications (SOQ) from qualified engineering companies to serve as an Owner’s Advisor for upcoming design and subsequent construction projects related to the Lee S. Dukes Water Treatment Plant (WTP) Expansion and Associated Infrastructure. Associated infrastructure includes new water transmission mains to improve overall system hydraulics from the expanded Lee S. Dukes WTP to the distribution system. Design and construction of the Lee S. Dukes WTP Expansion and the water transmission main(s) are planned to occur concurrently. The delivery method(s) to be utilized for the water transmission main projects have not been decided at the issuance of this RFQ. The purpose of this document is to solicit qualifications of engineering firms interested in providing Owner’s Advisor professional services during procurement and through construction/warranty phases of all infrastructures associated with the Lee S. Dukes WTP Expansion.

Elevated Storage Tank Rehabilitation Services

Charlotte Water (CLTWater) is soliciting Statements of Qualifications (SOQ) from qualified engineering companies (Company or Proposer) to provide professional engineering services for the Elevated Water Storage Tank Rehabilitation Program.  The purpose of this document is to solicit qualifications of engineering firms (Firm) interested in providing program management professional services from design through construction/warranty phases of multiple tank rehabilitation projects within the overall program.

 

This program involves the planning, design, and construction administration for the rehabilitation of multiple elevated water storage tank projects. Each tank will undergo interior and exterior recoating to extend its service life and improve corrosion resistance. The scope also includes the replacement of outdated structural components to enhance safety and compliance. Miscellaneous piping repairs will be completed as needed to restore functionality and improve overall system performance. The project is managed to ensure coordination, quality control, and adherence to regulatory standards throughout design and construction.