Website Update – November 18, 2024

National Grid’s contractor, Posillico Environmental, Inc. (Posillico), began implementation of 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 work is located 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. Intrusive activities at the Site were suspended on September 20, 2024. Community air monitoring ceased on September 16, 2024 while noise, vibration and settlement monitoring are ongoing during the work stoppage.

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.
  • Measures have been established to reduce potential noise, vibration, and dust from the work.
  • Air, noise, and vibration monitoring are conducted to ensure that the work is performed in accordance with the requirements of the NYSDEC, the New York State Department of Health (NYSDOH) and New York City (NYC). 

On-going activities:

  • Collected residual fluids and sediment generated during the water treatment system (“WTS”) cleanout are being prepared for disposal.
  • Noise, vibration, and settlement monitoring continue.

Recently completed activities:

  • Selected equipment, materials, and systems have been demobilized due to work suspension.

Upcoming work activities:

  • Resume continuous community air monitoring starting in late November/early December 2024.
  • Cleanout of WTS components.
  • Disposal of residual fluids and solids generated during the WTS cleanout.  

Community Air Monitoring Plan Summary

Due to suspension of intrusive activities, community air monitoring ceased on 09/16/2024.