OUR PROJECTS

Location: Houston, Texas (John F. Kennedy Blvd)

Core Sustainability performed a comprehensive Variable Air Volume (VAV) system replacement at the Houston Air Route Traffic Control Center (ZHU). All VAV boxes associated with the affected air handling units were replaced during evening and off-hours to avoid disruption to active FAA operations.

The project also included full removal of existing above-ceiling insulation and replacement with SonoGuard 2x2 insulation. In addition, the building automation system was upgraded from legacy Schneider controls to a modern IP-based platform. This required new control wiring and Cat6 cabling run to every VAV, followed by full point-to-point checkout and commissioning.

Key Challenges: Occupied facility, after-hours execution, mechanical and controls integration, mission-critical environment.

Location: FAA Facility

This project involved replacement of electric unit heaters serving a battery service building critical to the facility’s emergency backup systems. While a battery system upgrade was occurring concurrently under a separate contract, Core Sustainability’s scope ensured temperature control necessary to protect battery infrastructure that supports the entire building.

Due to the mission-critical nature of the space, this was a high-visibility project requiring strict coordination and zero tolerance for failure.

Location: Albuquerque ARTCC (ZAB), Albuquerque, New Mexico

Core Sustainability executed a full exterior security door upgrade at the Albuquerque Air Route Traffic Control Center. All exterior doors were replaced, including storefront systems, hollow metal doors, emergency egress doors, and air traffic control room exits.

All associated hardware—closers, access controls, and monitoring devices—was replaced and tested. Doors were replaced sequentially, one at a time, with each unit individually commissioned to verify proper operation and security system integration.

Key Challenges: Security-sensitive facility, continuous operations, precise sequencing.

Location: FAA Facility

Under Valcorp Enterprises as prime contractor, Core Sustainability performed hydrovac excavation to locate an existing telecom duct bank and connect AT&T’s 4-inch conduit to the facility infrastructure to enable new fiber service.

During excavation, a previously unknown duct bank failure was discovered near the building, with conduits filled with mud and debris. Core Sustainability located the failure beneath an existing sidewalk, repaired the duct bank, jetted the conduit clean, and restored full service to the building.

Key Challenges: Differing site conditions, live utilities, underground repairs.

Location: Fort Worth ARTCC (ZFW), Fort Worth, Texas Prime Contractor: Valcorp Enterprises

This large, multi-scope project bundled several critical infrastructure upgrades into a single coordinated effort. Core Sustainability’s work included:

Replacement of irrigation and domestic water backflow preventers and pressure regulating valves

Installation of new rooftop DX units on the Power Service Building

Replacement of legacy air handlers above the kitchen area

Kitchen roof replacement with associated PCB and asbestos abatement

Replacement of electric unit heaters in the Power Service Building

Replacement of mission-critical computer room air handlers serving air traffic control systems, executed one unit at a time with minimal downtime

Replacement of AHU-211

Hot and chilled water piping systems CAD-modeled, prefabricated, and installed for rapid changeouts

Key Challenges: Zero-downtime sequencing, hazardous materials abatement, complex phasing in an active air traffic control environment.

Location: Naval Air Station Joint Reserve Base, Fort Worth, Texas

Core Sustainability replaced all flooring on the third floor (Commander’s Floor) of the Navy Command Building at NAS JRB. The scope encompassed approximately 15,000 square feet of offices, cubicles, and command spaces supporting Navy operations.

Due to operational requirements, the command staff required the space to be vacated for no more than two weeks. The project required extensive pre-planning, logistics coordination, and sequencing involving furniture, workstations, computers, and sensitive equipment. The work was completed ahead of schedule and returned to service without operational impact.

Key Challenges: High-visibility command space, aggressive schedule, sensitive operational environment.

Location: NAS Joint Reserve Base, Fort Worth, Texas

Core Sustainability performed a full LED lighting modernization of two occupied barracks buildings. More than 2,000 light fixtures were replaced in under six weeks while maintaining continuous occupancy.

The project required careful phasing, coordination with base operations, and strict adherence to safety and access requirements.

Location: NAS Joint Reserve Base, Fort Worth, Texas

This project consisted of a complete roof replacement on a building located directly on the flight line adjacent to F-35 parking and active runways. The existing saturated gypsum deck was removed and replaced with a new steel deck.

The new roofing system included a fully adhered 60-mil TPO membrane, re-sloped insulation system, lightning protection, new gutters, and perimeter metalwork. The building housed a secure communications room, requiring strict controls and flawless execution.

Foreign Object Debris (FOD) prevention was critical due to aircraft proximity.

Key Challenges: Flight-line work, FOD control, secure communications space, complex re-roofing.

Location: FAA Facility Prime Contractor: Wells Global

Core Sustainability upgraded exterior doors at the battery service building, including full replacement and commissioning. The project required compliance with negative and positive pressure testing requirements to ensure building envelope integrity.

Location: Albuquerque, New Mexico

Core Sustainability executed its first large federal subcontract with Schneider Electric Federal, performing a comprehensive hot water system controls refurbishment.

Scope included new low-voltage wiring for flow sensors, temperature sensors, current switches, boiler pumps, boilers, and control valves. New control panels were installed, with full point-to-point terminations, checkout, and commissioning for facility-wide hot water control.

Location: Fort Worth ARTCC (ZFW), Fort Worth, Texas

Core Sustainability repaired a leaking duct bank entering the building. The project included excavation, troubleshooting, and flood testing to identify and verify repairs.

Additional issues were discovered with stormwater management. The team redesigned and installed a new underground stormwater system, including a new 6-inch storm line run more than 250 feet to a manhole. Work required hydro excavation, utility locates, protection of critical underground infrastructure, backfilling, regrading, and restoration with new sod.

Key Challenges: Live utilities, stormwater engineering, underground infrastructure coordination.