LocationWaldorf, Charles County, Maryland
MarketPump Stations
PUMPING STATION, BYPASS, GENERATOR, PROCESS, ELECTRICAL, AND SITE IMPROVEMENTS.
Johnston Construction Company
- Johnston Construction Company completed the St. Mark’s Pump Station No. 6 Upgrade for Charles County, Maryland.
- The project included construction and upgrade work for the St. Mark’s pumping station, including sitework, yard piping, demolition, pumping station improvements, emergency generator work, electrical power distribution, controls, startup, and closeout.
- JCC’s scope included sequencing and coordinating construction, bypass pumping, demolition, utility coordination, sitework, process piping, pumping equipment, grinder equipment, sluice gates, generator systems, control panels, instrumentation, startup, testing, training, and final turnover.
- The work required bypass pumping to allow the existing pumping station to be taken offline while construction and installation work was completed.
- The pumping station could not be placed online until electrical system modifications, main power feed, motor control centers, emergency generator, controls, pump testing, and startup requirements were completed and verified.
Concrete Services Division
- Concrete Services Division performed the reinforced-concrete work supporting the upgrade of St. Marks Pumping Station No. 6 in Charles County, Maryland.
- CSD furnished the labor, forming systems, reinforcing accessories, placement equipment, tools, and concrete-finishing services required for the pumping-station structures.
- The company formed, placed, finished, and cured reinforced-concrete foundations, walls, slabs, pads, and other structural and equipment-support elements.
- CSD constructed concrete components associated with the pumping-station wet well, station building, process equipment, piping supports, and operational improvements.
- The work included reinforced-concrete walls with specified architectural rub-wall finishes.