The City is seeking firms to provide routine preventive maintenance and repair services for approximately 50 Variable Frequency Drives (VFDs), ranging from 208 volts to 460 volts, located at various City facilities, including the Airport. Brand names include ABB, Danfoss, Mitsubishi, Schneider Electric, and Yaskawa. VFDs will be checked as needed for a full service of the VFD (cleaning, replacement parts, etc.), and involve inspection, testing, and reporting on each VFD’s condition. The City uses VFDs in various applications involving pumps and fans for HVAC systems to achieve energy savings.
Lakeview Road Improvements
This project spans approximately 1.5 miles and will add transportation capacity along Lakeview Road from Cushing Drive to Old Statesville Road to accommodate the additional traffic expected as a result of the construction of NCDOT’s I-77 Lakeview Road Direct Connect Interchange project. Improvements under this project will include pavement upgrades, intersection modifications, additional through/turning lanes, upgrading drainage infrastructure, and pedestrian and bicycle facilities.
Overhead Door Maintenance and Services
The City is responsible for maintaining a portfolio of approximately 180 buildings, including offices, fire stations, police division offices, and equipment shops, that house various City activities. The City also maintains cultural facilities, including museums and arenas that serve as venues for sports, entertainment, and other events. Contracts resulting from this RFP may be used by various City departments for needs across the entire City organization, including the Airport and the Charlotte Area Transit System (CATS).
The Company shall provide maintenance and repair services for approximately 250 sectional, rollup, rolling steel doors, rolling grills, and commercial fire doors located at police stations, fire stations, Charlotte Area Transit System facilities, and cultural facilities. Occasionally, the work may include replacement and installation of new doors. The Company shall respond to emergency calls for service within 4 hours. Services include all labor, materials, equipment, and supervision for the overhead door projects.
Solar Photovoltaic Systems Maintenance and Services
The Building Services Division of the General Services Department/Engineering and Project Management is responsible for maintaining a portfolio of approximately 180 buildings, including offices, fire stations, police division offices, and equipment shops, that house various City activities. The City also maintains cultural facilities, including museums and arenas that serve as venues for sports, entertainment, and other events. Contracts resulting from this RFP may be used by various City departments for needs across the entire City organization, including the Airport.
The City plans to contract with one or more companies to provide annual routine preventive maintenance and repair services, as well as services on an on-call as-needed basis (collectively referred to as Services), for solar photovoltaic (PV) systems currently in existence or under construction as listed in the table below. Systems may be added or removed from the list in accordance with the City’s needs. The City is seeking firms whose combination of experience and expertise will provide professional, timely, and cost-effective services to the City.
The Company will deliver to the City a plan for preventive maintenance and cleaning to ensure maximum efficiencies in the operation of all equipment per manufacturer specifications. The preventive maintenance and cleaning plan will include, at minimum, the following tasks, which the Company will perform at all the specified City PV system sites within 30 business days of receiving a Task Order, and every eleven (11) months thereafter if authorized by subsequent Task Orders:
- inspect generation meter and monitoring equipment;
- validate display data accuracy;
- verify that system production is accurately communicated via remote monitoring software (e.g. SolarEdge Monitoring Platform);
- visually inspect PV system condition including all modules and any auxiliary equipment;
- inspect solar PV system modules for any signs of degradation;
- clean all solar thermal collectors (with low PSI cleaning and biodegradable cleaning products);
- confirm inverter operating modes (standby; startup and on);
- inspect and maintain blower intake filters and electronics section air filters;
- verify proper fan operation on each inverter;
- check the inverters heat sinks and clean as needed;
- check inverter enclosure seals for damage;
- visually inspect the condition of all inverter cables and connections, and roof-top exposed wiring and electrical connections;
- confirm power supply and transformer output;
- check module ground connections;
- complete mechanical inspection of connections and wiring;
- measure the torque of all electrical connections and re-torque as needed;
- perform a complete array electrical performance verification including visual and mechanical inspection and string level electrical tests with Solmetric Analyzer;
- inspect flashings and sealants at roof penetrations;
- inspect racking with particular attention to major fasteners; corrosion or damage; array shifting from wind; and thermal cycling damage;
- tighten any solar module mounting hardware as needed;
- remove debris and any blockage of roof drainage around racking;
- inspect for and mitigate any vegetation and pest activity; and
- complete thermal imagery in support of diagnosing any potential and actual performance issues.
Blumenthal Performing Arts Center Phase II Roof Replacement
Roof Replacement at the Blumenthal Performing Arts Center
This work includes the provision of labor, material, equipment, supervision and administration to includes:
1. Roof Areas C1‐C3, D, E1‐E3, F1‐F3 and G:
a. Remove and dispose of base flashings, walkway pads and sheet metal.
b. Prepare two‐ply modified bitumen roof membrane to receive recovering roof system.
c. Provide a cold adhesive applied two‐ply modified bitumen roof membrane along with
flashings and accessories.
d. Replace sheet metal flashings and trim.
e. Provide a complete, watertight, 20‐year extension to existing roof system warranty.
2. Exterior Wall Restoration:
a. Replace elastomeric joint sealants at control joints and expansion joints at elevation walls
above roof level from through wall flashing up 6 feet.
b. Replace through wall flashings at masonry elevation wall above roof level.
c. Replace through wall flashings at window/door heads.
N. Tryon St- 36th St. Streetscape
The project will provide infrastructure improvements that include sidewalk, curb and gutter, milling- resurfacing, pedestrian refuge and signals, cross walks, planting strips, street trees, pedestrian and street lighting, bike lanes, and on-street parking. The project will provide 0.4 miles of streetscape along 36th street between North Tryon Street and Davidson Street. The project will tie into the Blue Line Extension project on 36th street.
Specialized Roadway Construction Services FY22D
This unspecified contract will provide horizontal construction services on an as-needed basis to the Engineering Department. The work includes traffic control, erosion control, clearing and grading, drainage, milling, asphalt paving, pavement markings, retaining wall, concrete curb, sidewalk, driveways, pedestrian refuge island and wheelchair ramps, utility relocation and installations.
Specialized Roadway Construction FY22C
This unspecified contract will provide horizontal construction services on an as-needed basis to the Engineering Department. The work includes traffic control, erosion control, clearing and grading, drainage, milling, asphalt paving, pavement markings, retaining wall, concrete curb, sidewalk, driveways, pedestrian refuge island and wheelchair ramps, utility relocation and installations.
Specialized Roadway Construction Services FY22A
This unspecified contract will provide horizontal construction services on an as-needed basis to the Engineering Department. The work includes traffic control, erosion control, clearing and grading, drainage, milling, asphalt paving, pavement markings, retaining wall, concrete curb, sidewalk, driveways, pedestrian refuge island, and wheelchair ramps.