Website Update – September 20, 2024

National Grid’s contractor, Posillico Environmental, Inc. (Posillico), is implementing interim remedial measure (IRM) activities at the K-Equity Works former Manufactured Gas Plant (MGP) Site to address MGP Site related impacts in accordance with the New York State Department of Environmental Conservation (NYSDEC) approved design. The IRM activities are being performed at 222 Maspeth Avenue, Brooklyn, NY, with a support area across the street at 287 Maspeth Avenue. Mobilization began on June 26, 2023, with full time work activities starting on July 31, 2023. Community air monitoring and vibration monitoring are being conducted during this project.

Overview:

  • The key elements of the remediation work include:
    • Underpinning of certain site structures,
    • Removal of surficial concrete;
    • Shallow excavation;
    • In-situ soil stabilization / solidification;
    • Deep excavation under a temporary tent structure; and
    • Site restoration.
  • There are established measures to reduce potential noise, vibration, and dust from the work.
  • Air, noise, and vibration monitoring are being conducted each day to ensure that the work is conducted in accordance with the requirements of the NYSDEC, the New York State Department of Health (NYSDOH) and New York City (NYC). 

On-going activities:

  • Cleanout of water treatment system (WTS) components at 222 Maspeth Avenue.
  • Air, noise, and vibration monitoring.

Recently completed activities:

  • Disassembly of WTS at 222 Maspeth Avenue.
  • Disassembly of temporary fabric structure (TFS) at 222 Maspeth Avenue.

Upcoming work activities:

  • Placement of temporary filter fabric for soil cover at 222 Maspeth Avenue.
  • Loadout of residual fluids and sediment generated during WTS cleanout for offsite disposal.
  • Interim site demobilization of select equipment and materials at 222 Maspeth Avenue.

Community Air Monitoring Plan Summary

Continuous community air monitoring is on-going.  For the period between 09/01/2024 – 09/13/2024, there were no measured readings above action levels associated with site activities for Total Volatile Organic Compounds (TVOC) or Particulate Matter (PM-10).