Ocean City 2nd Street Wastewater Pumping Station Improvements

Key Accomplishments

• The project addressed the station’s history of flooding by raising critical operating areas and equipment above the established flood elevation.
• JCC demolished the existing pumping-station superstructure and modified the remaining foundation and wet-well structure to support the upgraded facility.
• The company extended the existing foundation walls and constructed a new elevated floor slab with a finished-floor elevation of approximately 8.21 feet.
• JCC constructed elevated foundations and pads for the standby generator and the new electrical-control building.
• The company graded the pumping-station site to coordinate with the elevation of the adjacent water-tank property and improve flood resilience.
• JCC maintained wastewater service throughout construction using a temporary bypass-pumping system designed for the station’s operating conditions.
• The company coordinated pumping, temporary suction and discharge piping, standby equipment, electrical service, noise control, anchoring, roadway crossings, and emergency backup requirements.
• JCC installed new submersible chopper pumps and associated discharge piping, valves, supports, lifting equipment, controls, and appurtenances.
• The project included construction of a new precast-concrete influent vault on the west side of the station to connect the existing influent sewer lines to the upgraded wet well.
• JCC installed a new precast-concrete valve vault on the south side of the pumping station.
• The company installed a new eight-inch-diameter force main from the valve vault toward the existing wastewater piping in Dayton Lane.
• JCC furnished and installed mechanical piping, plug valves, fittings, supports, access equipment, and related pumping-station components.
• Johnston Construction Company completed the 2nd Street Wastewater Pumping Station Improvements project for the Town of Ocean City, Maryland.
• The project included wastewater pumping station improvements, mechanical and electrical equipment, support systems, appurtenances, site work, structural improvements, and related miscellaneous work.
• JCC’s scope included demolition, earthwork, excavation, trenching, backfilling, pavement restoration, outside piping, manholes, fencing, grading, seeding, structural concrete, precast concrete, metals, FRP doors, coatings, pumping equipment, odor control, hoists and cranes, mechanical systems, electrical systems, instrumentation, controls, bypass operations, startup, testing, and closeout.
• Major equipment and systems included submersible chopper pumps, sump pumps, stainless steel slide gate, carbon adsorber system, hoists and cranes, pumping station bypass operations, heating and ventilation equipment, ductwork, packaged engine generator, automatic transfer switch, electrical distribution, lighting, instrumentation, and control system hardware.
• The work required careful sequencing at an existing wastewater pumping station to maintain operations, protect existing utilities, coordinate bypass pumping, complete electrical and control integration, and return the station to service.
• Johnston Construction Company completed the 2nd Street Wastewater Pumping Station Improvements project for the Town of Ocean City, Maryland. The project was designed by Whitman, Requardt & Associates, LLP and performed under Contract No. WR/OC-202.
• The project consisted of improvements to an existing wastewater pumping station, including mechanical, electrical, structural, process, site, and miscellaneous upgrades. The work included furnishing and installing all materials, labor, equipment, excavation, backfill, demolition, structural work, architectural work, testing, and incidentals required to complete the pumping station improvements.
• JCC’s civil and site work included demolition and removal of existing work, earthwork, excavation, trenching, backfilling, pavement restoration, outside piping and appurtenances, manholes, chain link fences and gates, fine grading, seeding, sodding, cleanup, temporary facilities, and construction sequencing.
• Structural and architectural work included formwork, reinforcing steel, concrete accessories, cast-in-place concrete, precast concrete water and wastewater structures, structural steel framing, metal fabrications, post-installed anchors, pipe and tube railings, FRP doors and frames, door hardware, and high performance coatings.
• Mechanical and process improvements included stainless steel slide gate, submersible chopper pumps, sump pumps, carbon adsorber system, hoists and cranes, general mechanical requirements, pipes, valves and fittings, plug valves, plumbing equipment, pumping station bypass operations, heating and ventilation equipment, ductwork, and testing, adjusting, and balancing.
• The project required bypass pumping and careful operational coordination to maintain wastewater service while work was performed. JCC coordinated temporary systems, utility protection, pumping station bypass operations, equipment installation, electrical and controls integration, startup, testing, training, warranties, closeout documentation, and final restoration.
• The Project Was Completed On 1st May, 2018