Citizens former Manufactured
Gas Plant Site

Gas used for cooking, lighting, heating and commercial purposes was manufactured at the Citizens Manufactured Gas Plant from the 1860’s to the early 1960’s. The plant was built by the Citizens Gas Company, and sold to Brooklyn Union, a predecessor of National Grid, in 1895. It used coal and petroleum products to create a flammable gas which was piped to users in the surrounding neighborhoods. The production and storage facilities were decommissioned and demolished in the early 1960’s, and Brooklyn Union sold the site in 1969, after which it had no control of anything that happened on the property. The by-products of gas production and storage that resulted from site operations will be addressed through a Remedial Plan being implemented by National Grid with oversight of the New York State Department of Environmental Conservation (NYSDEC).  Most of the site is owned by the City of New York, with the balance owned by private companies. National Grid is responsible for the investigation and remediation of the site because it was operated by a predecessor company at the time the contamination occurred. 

This website provides information on the Citizens former MGP Site, the remediation projects and opportunities for public participation. National Grid is committed to the protection and enhancement of the environment, always seeking ways to minimize the environmental impacts of our past, present and future activities. We hope this website, a part of our public participation and outreach efforts, is helpful and informative. If you need additional information or have suggestions to make our website better, please contact the individuals listed under Contact.



January 7, 2022

National Grid’s contractor, Creamer Environmental, is implementing remedial actions at the Citizens former Manufactured Gas Plant (MGP) Site to address MGP Site related impacts in accordance with the NY State DEC approved design.  Mobilization began on July 10, 2019 and the remedial activities are expected to be completed in early 2022.  The cleanup activities are being performed with oversight by the New York State Department of Environmental Conservation (NYSDEC).  Community air monitoring and vibration monitoring are being conducted during this project.


  • The key elements of the remediation work include excavation of MGP Site impacted soils and installation of bulkheads using heavy construction equipment.
  • Preparation for these key remediation elements requires sheet pile installation to support excavations on site, as well as construction of bulkheads along the Gowanus Canal.
  • There are established measures to reduce potential noise, vibration, and dust from the work including pre-drilling before sheet pile driving, installation of a noise mitigation wall.
  • Air, noise, and vibration monitoring are conducted each day to ensure that the work is conducted in accordance with the requirements of NYSDEC, NYSDOH and NYC. 

On-going activities:

  • Excavation of soil and demolition of subsurface structures from the Parcel I supplemental excavation area.
  • Backfilling the Parcel I supplemental excavation as sections are completed to the design depth.
  • Removal of the Parcel I supplemental excavation support of excavation system sheet piles.
  • Installation of recovery wells and piezometers on Parcel II.
  • Transportation of materials off-site for disposal and recycling.

Recently completed activities:

  • Mobilized sheet pile rig.

Upcoming work activities:

  • Installation of the hydraulic relief system on Parcel II.

Community Air Monitoring Plan Summary

Continuous community air monitoring is on-going.  For the period 12/30/21 through 01/05/22 there were no levels above the 15-minute Action Limit for Total Volatile Organic Compounds (TVOC) or Particulate Matter (PM-10) associated with Site activities.

Removing Parcel I supplemental excavation support of excavation system sheet piles.

Installation of recovery wells on Parcel II.

Contact Information

National Grid will provide updates as the work at the site proceeds.  For more information, please leave a message on our hotline at (718) 982-7349, email us at

Website Update Information

National Grid will provide an activity update for neighbors of the former Citizens MGP site with developments related to the investigation and remediation of the Site. During the remedial construction phase, National Grid provides a bi-weekly update on activities related to the remediation of the Site. The updates describe the work being done on and near the Site, and provide a forecast for upcoming work, including information about work that may affect normal community activities. All updates will be archived under the Key Documents tab of this website.