LocationAberdeen Proving Ground, Harford County, Maryland
MarketWater Storage and Tanks
PAX WATER MIXER INSTALLATION, TANK CLEANING AND COATING REPAIRS, ELECTRICAL AND CONTROL SYSTEM IMPROVEMENTS, OBSTRUCTION LIGHTING, BIRD DETERRENCE, TELEMETRY, DISINFECTION, AND WATER-QUALITY TESTING.
Johnston Construction Company
- Completed comprehensive improvements to an existing 0.5-million-gallon elevated water storage tank serving the City of Aberdeen's public water system at Aberdeen Proving Ground.
- Furnished and installed a new PAX Water Technologies active tank mixing system to improve circulation and turnover of stored potable water.
- Upgraded the originally specified mixing equipment to a larger PAX 400 mixer to provide increased mixing capability.
- Installed the mixer support system and coordinated structural attachment of the mixer bracket to the existing tank overflow piping.
- Pressure washed the existing elevated water tank and completed coating touch-up and repair at areas affected by construction and welding.
Electrical Services Division
- Performed the electrical construction associated with improvements to an existing 0.5-million-gallon elevated water storage tank at Aberdeen Proving Ground.
- Completed electrical demolition of existing conduit and wiring and installed new conduit, conductors, connections, switches, receptacles, and associated electrical infrastructure.
- Installed electrical systems supporting the new PAX Water Technologies tank mixing system, including modifications required when the project was upgraded to the larger PAX mixer.
- Relocated the existing LP panelboard and vault exhaust-fan timer as part of the tank electrical improvements.
- Furnished and installed a 72-inch x 72-inch x 12-inch NEMA 12 electrical equipment enclosure complete with lighting, exhaust fan, intake fan, heater, and door switches.