
Website Update – August 18, 2025
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 took place July 31, 2023 through September 20, 2024 and resumed November 18, 2024 through June 4, 2025. Noise, vibration and settlement monitoring were also suspended on June 4, 2025, and onsite work has ceased.
Overview:
- The key scope 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:
- No scope elements are currently on-going.
Recently completed activities:
- None.
Upcoming work activities:
- No upcoming work activities currently planned; intrusive work is suspended.
Community Air Monitoring Plan Summary
The community air monitoring plan (CAMP) activities were suspended on the morning of 06/04/2025 after removal of waste materials from the site and will be re-implemented once IRM work resumes.