North Laurel Wastewater Pumping Station

Johnston Construction Company

• Johnston Construction Company was selected by Howard County, Maryland to construct the North Laurel Wastewater Pumping Station, a major wastewater infrastructure project delivered under IFB No. 2013-22, Capital Project No. S-6189, Contract No. 20-4680.
• The project included construction of a complete new wastewater pumping station, including the station structure, pumps, variable frequency drives, process piping, instrumentation, telemetry, generator, electrical systems, chemical feed equipment, landscaping, site work, and all appurtenances necessary for a fully operational facility.
• 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.