Aug 06

Weekly Update August 9, 2021

PSE&G Former Harrison MGP Site: Weekly Project Update – Week of 8/9/21

The PSE&G site remediation group and its environmental contractor, Sevenson Environmental Services, Inc., are conducting activities to remediate soils at the Harrison former Manufactured Gas Plant (MGP) site. Work began in July 2020 and is expected to be completed in mid-2022. 

These updates are being issued weekly throughout the duration of the project to provide a review of key activities performed at the site over the past week as well as a look ahead to the next week’s anticipated activities. They are also posted to the project website: www.HarrisonMGP.com where more information about the project scope and history can be found. If you have any questions or concerns about the project, please call the PSE&G Harrison Project Information Line at (855) 356-2383 or email us at comments@harrisonMGP.com.


North Gate – The North Gate across from Guyon Drive is now the main entrance to the PSE&G Harrison site. Onsite signs will direct vehicles to the M&R Station, Appliance Service Building and construction areas.

Sidewalk Closure – The sidewalk on the PSE&G side of Frank E. Rodgers Blvd. will remain closed between Guyon Drive and Cape May Street for the foreseeable future while work is performed. 

Odors – The MGP remediation project currently is treating soils in areas of the site with strong odors. Dedicated staff are continuously treating the excavation areas and soil piles with foams and sprays to suppress odors. Long-term foams are applied to areas open for an extended period, such as overnight or over a weekend. Perimeter air monitoring confirms the project continues to meet all safe air quality criteria for the project.

While these areas are remediated during the next few weeks, onsite personnel and nearby residents may be more likely to notice odors like moth balls or fresh asphalt. The project team will continue to maintain safe operations and appreciates your patience. We recognize the nuisance of this work and will complete these areas as quickly as possible.

Anticipated Work for the Week of August 9 – August 13

Remediation Activities – (See Figure 1 below and on the website)

  • Continue to pre-clear Phase 2 area 1B, 2A, 2B, 3A and 4B for In Situ Stabilization (ISS) work. This work will generate sounds from breaking of concrete and removal of metal piping and other materials.   
  • Continue ISS work in area 1A, 2B and along Frank E. Rodgers Blvd. 
  • Continue to backfill and compact clean fill in completed areas with intermittent use of vibratory rollers.
  • Perform soft dig to locate underground utilities and cut and cap unused utilities.
  • Transport excavated soil and concrete by trucks for disposal or recycling at a licensed facility.
  • Operate temporary wastewater treatment facility to control groundwater and surface water accumulations during work activities. Treated water is discharged in accordance with a permit issued by the Passaic Valley Sewerage Commission. 
  • Maintain soil and sediment erosion controls. 
  • Maintain temporary fencing around active work areas. 

Continue Monitoring & Mitigation Measures

  • Apply dust suppression and odor controls, as needed, during remediation activities. 
  • Continue vibration monitoring between remedial work and the nearest onsite buildings.
  • Continue to perform perimeter air monitoring. 
  • Maintain site security 24 hours a day, 7 days a week.

NOTE:  Odors associated with some constituents can often be detected at levels that are well below what would be considered a health concern and often below what can be detected by an air monitoring instrument. The MGP project continues to:

  • Apply vapor mitigation sprays in the excavation area.
  • Apply odor suppressing foams in the excavation area and in the trucks while being loaded.
    • Short-term odor suppressing foam is white in color when applied. 
    • Long-term odor suppressing foam is black in color when applied and dries to a dark gray or black color with a shiny appearance. 
  • Use odor suppressing foams more frequently and in greater amounts.
  • Cover project soil piles with plastic when work is completed.
  • Perform daily odor assessment walks around the MGP remediation work areas to determine if and at what levels odors may be detected beyond the work area fence line. 

Other control measures, including water mist and sand, will be used as needed to control potential dust and odors during excavation and non-work periods, including evenings and weekends. The MGP project performs continuous air monitoring during working hours around the site. Confirmatory air samples are taken weekly and all results have been below our action levels. 


  • Demolition of the machine shop and office building located in Phase 2 area 2B could begin. Materials will be transported, as appropriate, for recycling or proper disposal at a licensed facility.

Work Completed August 2 – August 6 

Remediation Activities

  •  Backfilled and compacted clean fill in completed areas.
  • Continued ISS work in areas 2B and along Frank E. Rodgers Blvd. 
  • Continued preclearing in areas 1B, 2A, and 2B. 
  • Mobilized remediation equipment and personnel to the project site as needed.
  • Installed and maintained additional soil and sediment erosion controls. 
  • Maintained temporary fencing around active work areas.

Monitoring & Mitigation Measures

  • Applied dust suppression and odor controls during pre-trenching and clearing activities. 
  • Continued vibration monitoring between remedial work and the nearest onsite buildings.
  • Continued to perform perimeter air monitoring when soil disturbance work was in progress. 
  • Maintained site security 24 hours a day, 7 days a week.


  • Completed abatement of the office building located in Phase 2 area 2B.

Community Outreach 

  • Issued 53rd weekly update email to representatives of the Town of Harrison, Hudson County Regional Health Commission, and property managers of Vermella, Steel Works, and Cobalt Lofts apartment complexes, as well as the owners of Joia Restaurant and officials of Amtrak.

The PSE&G remediation project team is committed to: conducting work safely on the job site; minimizing impacts from the project to those outside of the project area; keeping PSE&G non-project personnel, the local community, elected officials, and all interested parties informed of our progress; and enhancing the property’s continued productive use. The team will follow the guidelines and directives issued by the New Jersey Department of Health, the CDC and the Occupational Health and Safety Administration, as applicable, for maintaining a clean, safe and healthy work environment. PSE&G personnel and contractors are required to participate in social distancing and wear appropriate gloves and face coverings during all work activities

All work is being performed in accordance with the guidance and regulations of the New Jersey Department of Environmental Protection (NJDEP), and under the oversight of the Licensed Site Remediation Professional (LSRP) of record. 

FIGURE 1 – Pre-Clearing Excavation Status of Phase 2 ISS Stages