North Laurel Wastewater Pumping Station

Key Accomplishments

• Johnston Construction Company coordinated construction while maintaining existing wastewater system operations, minimizing interference with existing facilities, coordinating shutdowns, and completing new equipment and facility testing before final tie-ins to the existing system.
• Major construction activities included construction of the pump station building, generator building, pigging / bypass vault, transformer platform, new transformers, electrical duct banks, site force main piping, sanitary sewer manholes, site sewer piping, stormwater management features, and final site restoration.
• Johnston Construction Company coordinated startup, process demonstration and testing, manufacturer certifications, owner training, O&M manuals, record drawings, and closeout documentation required to turn the new pumping station over to Howard County.
• Johnston Construction Company served as the contractor for Howard County, Maryland on the North Laurel Wastewater Pumping Station project. The work consisted of furnishing all materials and constructing the complete pumping station, including the structure, pumps, VFDs, piping, instrumentation, telemetry, generator, landscaping, site work, appurtenances, and incidental items required by the contract documents.
• Major construction activities included construction of the pump station building, generator building, pigging / bypass vault, transformer platform, installation of new transformers and electrical duct banks, site force main piping, manholes, tapping sleeve and valve work, site sewer piping, insertion valve installation, flow diversion to the new pump station, pump testing and demonstration, stormwater management features, site work, and landscaping.
• The mechanical and process scope included dry-pit submersible non-clog centrifugal pumps, mechanical grinders, chemical feed equipment, monorail hoists, davit cranes, piping, valves, fittings, mechanical insulation, sewage surge relief valves, combination air valves, fuel oil piping and valves, plumbing fixtures, plumbing equipment, sump pump, acoustical silencers, HVAC equipment, ductwork, fans, air inlets and outlets, testing, adjusting, and balancing.
• The project also required startup and process demonstration procedures to show that the completed work operated as a complete and functional system. Johnston Construction Company coordinated equipment startup, clean-water startup activities, process demonstration and testing, manufacturer certificates, owner training, O&M manuals, record drawings, project videos and photographs, warranties, spare parts, and final closeout.
• The Project Was Completed On 31st December,2017