Ray Harvey & Son Excavation, 241 Shiloh Rd, Bridgeton, NJ 08302, US

Operational for more than 25 years, Portadam specializes in manufacturing, distributing and installing temporary cofferdam systems for water diversion and retention operations. The company offers welded tubular steel framework support and flexible waterproof membranes for construction, rehabilitation, and flood protection and inspection projects. Its cofferdam systems have steel support units and impervious fabric membranes. Portadam provides temporary overflow weir structures for rivers, streams, lakes and reservoirs. The company offers portable dams and water retention systems for application in historical stone wall repair, erosion damage restoration and landfill slope stabilization projects. In addition, it provides temporary containment basin systems for dewatering and dredging operations.