Monitoring Data

Please scroll below to view the Gowanus Remediation Team’s environmental monitoring updates.

Public and worker safety during construction is the number one priority. The Remediation Team has established a rigorous environmental monitoring program to ensure the safety of the site workers and the surrounding Gowanus community during remedial construction activities. During construction, it is normal to expect increased levels of dust, temporary suspension of sediment in the waterway, noise and vibrations. Recorded air quality and noise data is published and available by clicking the links below.

To protect public and community health and the safety of workers on site the Remediation Team, under the supervision and at the direction of the EPA, conducts an extensive air monitoring program designed and implemented by a third party, independent of the construction contractor. Fourteen (14) automated air monitoring stations have been placed along the canal to detect the presence of volatile compounds and particulate matter (dust). Urban settings like the areas surrounding the Gowanus Canal contain background levels of volatile compounds and particulate matter in the air regardless of the occurrence of remedial construction activities, and the monitoring takes into account these background levels. Volatile compounds and particulate matter include both man-made and natural occurring sources such as smog, paint, asphalt paving, vehicular emissions (diesel exhaust), and even vegetation (plants). The air monitoring stations measure concentrations of volatile organic compounds and particulate matter. In the event that remedial activities result in levels of volatile compounds and particulate matter above pre-set levels, the construction team is alerted immediately so that we can investigate and address the elevated concentrations through a variety of established protocols. This process of investigating and addressing these issues serves to protect workers and surrounding communities. The air monitoring program is described in more detail in the Community Air Monitoring Program plan.

Significant noise during dredging activities is not anticipated. During bridge and bulkhead support work, noise monitors will be stationed along the canal to ensure that noise levels during construction comply with local noise ordinances. Noise is measured using the decibel scale. For example, normal conversation is typically around 60 decibels, and electric saw is around 100 decibels, and amplified rock music is around 120 decibels.

Monitoring Data Update: Period October 4, 2021 – October 8, 2021
Monitoring Data Update: Period September 27, 2021 – October 1, 2021
Monitoring Data Update: Period September 20, 2021 – September 24, 2021
Monitoring Data Update: Period September 13, 2021 – September 17, 2021
Monitoring Data Update: Period September 6, 2021 –  September 10, 2021
Monitoring Data Update: Period August 30, 2021 – September 3, 2021
Monitoring Data Update: Period August 23, 2021 – August 27, 2021
Monitoring Data Update: Period August 16, 2021 – August 20, 2021
Monitoring Data Update: Period August 9, 2021 – August 13, 2021
Monitoring Data Update: Period August 2, 2021 –  August 6, 2021
Monitoring Data Update: Period July 26, 2021 – July 30, 2021
Monitoring Data Update: Period July 19, 2021 – July 23, 2021
Monitoring Data Update: Period July 12, 2021 – July 16, 2021
Monitoring Data Update: Period July 5, 2021 – July 9, 2021
Monitoring Data Update: Period June 28, 2021 – July 2, 2021
Monitoring Data Update: Period June 21, 2021 – June 25, 2021
Monitoring Data Update: Period June 14, 2021 – June 18, 2021
Monitoring Data Update: Period June 7, 2021 – June 11, 2021
Monitoring Data Update: Period May 31, 2021 – June 4, 2021
Monitoring Data Update: Period May 24, 2021 – May 28, 2021
Monitoring Data Update: Period May 17, 2021 – May 21, 2021
Monitoring Data Update: Period May 3, 2021 – May 7, 2021, May 10, 2021 – May 14, 2021
Monitoring Data Update: Period April 26, 2021 – April 30, 2021
Monitoring Data Update: Period April 19, 2021 – April 23, 2021
Monitoring Data Update: Period April 12, 2021 – April 16, 2021
Monitoring Data Update: Period April 3, 2021 – April 9, 2021
Monitoring Data Update: Period March 29, 2021 – April 2, 2021
Monitoring Data Update: Period March 22, 2021 – March 26, 2021
Monitoring Data Update: Period March 15, 2021 – March 19, 2021
Monitoring Data Update: Period March 8, 2021 – March 12, 2021
Monitoring Data Update: Period March 1, 2021 – March 5, 2021
Monitoring Data Update: Period February 22, 2021 – February 26, 2021
Monitoring Data Update: Period February 15, 2021 – February 19, 2021
Monitoring Data Update: Period February 8, 2021 – February 12, 2021
Monitoring Data Update: Period February 1, 2021 – February 5, 2021
Monitoring Data Update: Period January 25, 2021 – January 29, 2021
Monitoring Data Update: Period January 18, 2021 – January 22, 2021
Monitoring Data Update: Period December 21, 2020 – January 15, 2021
Monitoring Data Update: Period November 16, 2020 – December 18, 2020