E2PM was contracted to assist as a third-party consultant in providing site inspections, preparing detailed vibration and sediment monitoring plans, inspecting critical infrastructure within the impact zone of the site, and preparing Support of Excavation (SOE) designs for a remediation project at the Harrison Manufactured Gas Plant (MGP) in Harrison, New Jersey. 

The former MGP Facility is a +/-32 acre site bounded by the Port Authority Trans-Hudson Corp. (PATH), Frank E. Rodgers Boulevard and the Passaic River. The Site is presently used as the regional headquarters facilities for major utility gas distribution, appliance services, resource recovery and construction groups, as well as a natural gas metering and regulating (M&R) station.

The project at the MGP site involved site-wide remediation using In-situ Stabilization (ISS), shallow excavation, utility corridor construction, building demolitions, and a hydraulic barrier wall.  The remediation included excavations and a combination of ISS and excavation with a low permeability asphalt cap used at some areas of the Site. The Scope of Work also includes the creation of a clean safe utility corridor adjacent to the hydraulic barrier wall alignment for remaining utilities and the demolition of on-site buildings.

Protection of critical infrastructure and buildings was accomplished by the use of Support of Excavation (SOE) measures and also active monitoring.   E2PM conducted site inspections, prepared detailed vibration and sediment monitoring plans, inspected the critical infrastructure within the impact zone of the site and prepared SOE designs.  

Panoramic View of the Project Site