PSE&G Former Front Street MGP Site Remediation Newark, NJ
2015 to 2016
Thermal Disorbtion and Recycling of Petroleum Contaminated Soils
Steel Sheeting and Bulk Heading
Transportation and Disposal of Contaminated Soils
Remediation of approximately 15,000 tons of contaminated material from a former manufactured gas plant over multiple properties with various owners. Installation of a new bulkhead along the Passaic River with a new rip rap shoreline stabilization. Installation of topsoil, seeding, and plantings on a NJDOT property with plans for a future park as part of the Newark beautification plan. Restoration of a pre-existing parking lot for the adjacent restaurant.
WHAT MADE THIS JOB COMPLEX
Contract drawings called for excavation with depths up to approximately 40′ below ground surface but only 15′ wide along the Passaic River. The project called for unique support of excavation methods as well as unique equipment to dig and load-out material due to the limits of contamination. The high amount of water influence during construction activities made dewatering critical. In addition, staging areas needed to be shared with the property owner as they maintained the restaurant’s operations.
HOW POSILLICO SOLVED IT
Posillico selected various specialty equipment to perform the unique project such as tele-dipper excavator attachments to excavate at great depths in constrained areas, long reach excavators to load-out material at a greater production, and installed hydraulic struts in lieu of traditional steel to support the excavation at various depths and to increase excavation production. Dewatering activities were performed 24/7 in order to keep the excavation dry and workable. The work areas were directly adjacent to the Passaic River, sometimes drawing the water table 20′ or greater below the mean high water elevation.