Skip to content

Monitoring Data

ENVIRONMENTAL MONITORING

Public and worker safety during construction is our number one priority. The Gowanus 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. Safety during construction is the number one priority.

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

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 30, 2023 – November 3, 2023
Monitoring Data Update: Period October 23, 2023 – October 27, 2023
Monitoring Data Update: Period October 16, 2023 – October 20, 2023
Monitoring Data Update: Period October 9, 2023 – October 13, 2023
Monitoring Data Update: Period October 2, 2023 – October 6, 2023
Monitoring Data Update: Period September 25, 2023 – September 29, 2023
Monitoring Data Update: Period September 18, 2023 – September 22, 2023
Monitoring Data Update: Period September 11, 2023 – September 15, 2023
Monitoring Data Update: Period September 4, 2023 – September 8, 2023
Monitoring Data Update: Period August 28, 2023 – September 1, 2023
Monitoring Data Update: Period August 21, 2023 – August 25, 2023
Monitoring Data Update: Period August 14, 2023 – August 18, 2023
Monitoring Data Update: Period August 7, 2023 – August 11, 2023
Monitoring Data Update: Period July 31, 2023 – August 4, 2023
Monitoring Data Update: Period July 24, 2023 – July 28, 2023
Monitoring Data Update: Period July 17, 2023 – July 21, 2023
Monitoring Data Update: Period July 10, 2023 – July 14, 2023
Monitoring Data Update: Period July 3, 2023 – July 7, 2023
Monitoring Data Update: Period June 26, 2023 – June 30, 2023
Monitoring Data Update: Period June 19, 2023 – June 23, 2023
Monitoring Data Update: Period June 12, 2023 – June 16, 2023
Monitoring Data Update: Period June 5, 2023 – June 9, 2023
Monitoring Data Update: Period May 29, 2023 – June 2, 2023
Monitoring Data Update: Period May 22, 2023 – May 26, 2023
Monitoring Data Update: Period May 15, 2023 – May 19, 2023
Monitoring Data Update: Period May 8, 2023 – May 12, 2023
Monitoring Data Update: Period May 1, 2023 – May 5, 2023
Monitoring Data Update: Period April 24, 2023 – April 28, 2023
Monitoring Data Update: Period April 17, 2023 – April 21, 2023
Monitoring Data Update: Period April 10, 2023 – April 14, 2023
Monitoring Data Update: Period April 3, 2023 – April 7, 2023
Monitoring Data Update: Period March 27, 2023 – March 31, 2023
Monitoring Data Update: Period March 20, 2023 – March 24, 2023
Monitoring Data Update: Period March 13, 2023 – March 17, 2023
Monitoring Data Update: Period March 6, 2023 – March 10, 2023
Monitoring Data Update: Period February 27, 2023 – March 3, 2023
Monitoring Data Update: Period February 20, 2023 – February 24, 2023
Monitoring Data Update: Period February 13, 2023 – February 17, 2023
Monitoring Data Update: Period February 06, 2023 – February 10, 2023
Monitoring Data Update: Period January 30, 2023 – February 03, 2023
Monitoring Data Update: Period January 23, 2023 – January 27, 2023
Monitoring Data Update: Period January 16, 2023 – January 20, 2023
Monitoring Data Update: Period January 09, 2023 – January 13, 2023
Monitoring Data Update: Period January 02, 2023 – January 06, 2023
Monitoring Data Update: Period December 26, 2022 – December 30, 2022
Monitoring Data Update: Period December 19, 2022 – December 23, 2022
Monitoring Data Update: Period December 12, 2022 – December 16, 2022
Monitoring Data Update: Period December 05, 2022 – December 09, 2022
Monitoring Data Update: Period November 28, 2022 – December 02, 2022
Monitoring Data Update: Period November 21, 2022 – November 25, 2022
Monitoring Data Update: Period November 14, 2022 – November 18, 2022
Monitoring Data Update: Period November 07, 2022 – November 11, 2022
Monitoring Data Update: Period October 31, 2022 – November 04, 2022
Monitoring Data Update: Period October 24, 2022 – October 28, 2022
Monitoring Data Update: Period October 17, 2022 – October 21, 2022
Monitoring Data Update: Period October 10, 2022 – October 14, 2022
Monitoring Data Update: Period October 03, 2022 – October 07, 2022
Monitoring Data Update: Period September 26, 2022 – September 30, 2022
Monitoring Data Update: Period September 19, 2022 – September 23, 2022
Monitoring Data Update: Period September 12, 2022 – September 16, 2022
Monitoring Data Update: Period September 5, 2022 – September 9, 2022
Monitoring Data Update: Period August 29, 2022 – September 2, 2022
Monitoring Data Update: Period August 22, 2022 – August 26, 2022
Monitoring Data Update: Period August 15, 2022 – August 19, 2022
Monitoring Data Update: Period August 8, 2022 – August 12, 2022
Monitoring Data Update: Period August 1, 2022 – August 5, 2022
Monitoring Data Update: Period July 25, 2022 – July 29, 2022
Monitoring Data Update: Period July 18, 2022 – July 22, 2022
Monitoring Data Update: Period Ju;y 11, 2022 – July 15, 2022
Monitoring Data Update: Period July 4, 2022 – July 8, 2022
Monitoring Data Update: Period June 27, 2022 – July 1, 2022
Monitoring Data Update: Period June 20, 2022 – June 24, 2022
Monitoring Data Update: Period June 13, 2022 – June 17, 2022
Monitoring Data Update: Period June 6, 2022 – June 10, 2022
Monitoring Data Update: Period May 30, 2022 – June 3, 2022
Monitoring Data Update: Period May 23, 2022 – May 27, 2022
Monitoring Data Update: Period May 16, 2022 – May 20, 2022
Monitoring Data Update: Period May 9, 2022 – May 13, 2022
Monitoring Data Update: Period May 2, 2022 – May 6, 2022
Monitoring Data Update: Period April 25, 2022 – April 29, 2022
Monitoring Data Update: Period April 18, 2022 – April 22, 2022
Monitoring Data Update: Period April 11, 2022 – April 15, 2022
Monitoring Data Update: Period April 4, 2022 – April 8, 2022
Monitoring Data Update: Period March 28, 2022 – April 1, 2022
Monitoring Data Update: Period March 21, 2022 – March 25, 2022
Monitoring Data Update: Period March 14, 2022 – March 18, 2022
Monitoring Data Update: Period March 7, 2022 – March 11, 2022
Monitoring Data Update: Period February 28, 2022 – March 4, 2022
Monitoring Data Update: Period February 21, 2022 – February 25, 2022
Monitoring Data Update: Period February 14, 2022 – February 18, 2022
Monitoring Data Update: Period February 7, 2022 – February 11, 2022
Monitoring Data Update: Period January 31, 2022 – February 3, 2022
Monitoring Data Update: Period January 24, 2022 – January 28, 2022
Monitoring Data Update: Period January 17, 2022 – January 21, 2022
Monitoring Data Update: Period January 10, 2022 – January 14, 2022
Monitoring Data Update: Period January 3, 2022 – January 7, 2022
Monitoring Data Update: Period December 27, 2021 – December 31, 2021
Monitoring Data Update: Period December 20, 2021 – December 24, 2021
Monitoring Data Update: Period December 13, 2021 – December 17, 2021
Monitoring Data Update: Period December 6, 2021 – December 10, 2021
Monitoring Data Update: Period November 29, 2021 – December 3, 2021
Monitoring Data Update: Period November 22, 2021 – November 26, 2021
Monitoring Data Update: Period November 15, 2021 – November 19, 2021
Monitoring Data Update: Period November 8, 2021 – November 12, 2021
Monitoring Data Update: Period November 1, 2021 – November 5, 2021
Monitoring Data Update: Period October 25, 2021 – October 29, 2021
Monitoring Data Update: Period October 18, 2021 – October 22, 2021
Monitoring Data Update: Period October 11, 2021 – October 15, 2021
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

The Gowanus Remediation Team (GRT) utilizes water quality monitoring buoys positioned in the Gowanus Canal to detect the turbidity levels and dissolved oxygen levels of the waterway during construction activities. The GRT monitors water quality to ensure that construction activities do not result in readings above predetermined levels (exceedances).

The turbidity (or cloudiness) of the water is monitored to detect resuspension of sediment related to construction activities. Turbidity is a measure of how well light penetrates the water. If small solid particles are present, the water can appear murky or turbid. Turbidity can occur naturally through algae blooms and by human activities, such as rain storm runoff.

Dissolved oxygen (DO) is the amount of oxygen that is present in water of the canal. The GRT monitors DO levels using the monitoring buoys and handheld monitors. Various environmental conditions such as ambient air temperature, rain storm runoff, and aquatic life can influence DO levels.

Water Quality Monitoring Period: November 13 – November 17, 2023
Water Quality Monitoring Period: November 6 – November 10, 2023
Water Quality Monitoring Period: October 30 – November 3, 2023
Water Quality Monitoring Period: October 23 – October 27, 2023
Water Quality Monitoring Period: October 16 – October 20, 2023
Water Quality Monitoring Period: October 9 – October 13, 2023
Water Quality Monitoring Period: October 2 – October 6, 2023
Water Quality Monitoring Period: September 25 – September 29, 2023
Water Quality Monitoring Period: September 18 – September 22, 2023
Water Quality Monitoring Period: September 11 – September 15, 2023
Water Quality Monitoring Period: September 4 – September 8, 2023
Water Quality Monitoring Period: August 28 – September 1, 2023
Water Quality Monitoring Period: August 21 – August 25, 2023
Water Quality Monitoring Period: August 14 – August 18, 2023
Water Quality Monitoring Period: June 26 – June 30, 2023
Water Quality Monitoring Period: June 19 – June 23, 2023
Water Quality Monitoring Period: June 12 – June 16, 2023
Water Quality Monitoring Period: June 5 – June 9, 2023
Water Quality Monitoring Period: May 5 – June 2, 2023
Water Quality Monitoring Period: May 22 – May 26, 2023
Water Quality Monitoring Period: May 15 – May 19, 2023
Water Quality Monitoring Period: May 8 – May 12, 2023
Water Quality Monitoring Period: May 1 – May 5, 2023
Water Quality Monitoring Period: April 24 – April 28, 2023
Water Quality Monitoring Period: April 17 – April 21, 2023
Water Quality Monitoring Period: April 10 – April 14, 2023
Water Quality Monitoring Period: April 3 – April 7, 2023
Water Quality Monitoring Period: March 27 – March 31, 2023
Water Quality Monitoring Period: March 20 – March 24, 2023
Water Quality Monitoring Period: March 13 – March 17, 2023
Water Quality Monitoring Period: February 27 – March 3, 2023
Water Quality Monitoring Period: February 21 – February 24, 2023
Water Quality Monitoring Period: February 13 – February 17, 2023
Water Quality Monitoring Period: February 6 – February 10, 2023
Water Quality Monitoring Period: January 30 – February 3, 2023
Water Quality Monitoring Period: January 23 – January 27, 2023
Water Quality Monitoring Period: January 16 – January 20, 2023
Water Quality Monitoring Period: January 9 – January 13, 2023
Water Quality Monitoring Period: January 3 – January 6, 2023
Water Quality Monitoring Period: October 2 – October 7, 2022
Water Quality Monitoring Period: September 26 – September 30, 2022
Water Quality Monitoring Period: September 19 – September 23, 2022
Water Quality Monitoring Period: September 12 – September  16, 2022
Water Quality Monitoring Period: September 6 – September 9, 2022
Water Quality Monitoring Period: August 22 – August 26, 2022
Water Quality Monitoring Period: August 15 – August 19, 2022
Water Quality Monitoring Period: August 8 – August 12, 2022
Water Quality Monitoring Period: August 1 – August 5, 2022
Water Quality Monitoring Period: July 25 – July 29, 2022
Water Quality Monitoring Period: July 18 – July 22, 2022
Water Quality Monitoring Period: July 11 – July 15, 2022
Water Quality Monitoring Period: July 5 – July 8, 2022
Water Quality Monitoring Period: June 27 – July 1, 2022
Water Quality Monitoring Period: June 20 – June 24, 2022
Water Quality Monitoring Period: June 13 – June 17, 2022
Water Quality Monitoring Period: June 6 – June 10, 2022
Water Quality Monitoring Period: May 31 – June 3, 2022
Water Quality Monitoring Period: May 23 – May 27, 2022
Water Quality Monitoring Period: May 16 – May 20, 2022
Water Quality Monitoring Period: May 9 – May 13, 2022
Water Quality Monitoring Period: May 2 – May 6, 2022
Water Quality Monitoring Period: February 21 – February 25, 2022
Water Quality Monitoring Period: February 14 – February 18, 2022
Water Quality Monitoring Period: February 7 – February 11, 2022
Water Quality Monitoring Period: January 31 – February 4, 2022
Water Quality Monitoring Period: January 24 – January 28, 2022
Water Quality Monitoring Period: January 17 – January 21, 2022
Water Quality Monitoring Period: January 10 – January 14, 2022
Water Quality Monitoring Period: January 3 – January 7, 2022
Water Quality Monitoring Period: December 27 – December 31, 2021
Water Quality Monitoring Period: December 20 – December 24, 2021
Water Quality Monitoring Period: December 13 – December 17, 2021
Water Quality Monitoring Period: December 6 – December 10, 2021
Water Quality Monitoring Period: November 29 – December 3, 2021
Water Quality Monitoring Period: November 22 – November 24, 2021
Water Quality Monitoring Period: November 15 – November 19, 2021
Water Quality Monitoring Period: November 8 – November 12, 2021
Water Quality Monitoring Period: November 1 – November 5, 2021
Water Quality Monitoring Period: October 25 – October 29, 2021
Water Quality Monitoring Period: October 18 – October 22, 2021

Water Quality Monitoring Period: October 4 – October 8, 2021
Water Quality Monitoring Period: September 27 – October 1, 2021
Water Quality Monitoring Period: September 20 – September 24, 2021
Water Quality Monitoring Period: September 13 – September 17, 2021
Water Quality Monitoring Period: September 6 – September 10, 2021
Water Quality Monitoring Period: August 30 – September 3, 2021
Water Quality Monitoring Period: August 16 – August 20, 2021
Water Quality Monitoring Period: August 9 – August 13, 2021
Water Quality Monitoring Period: August 2 – August 6, 2021
Water Quality Monitoring Period: July 26 – July 30, 2021
Water Quality Monitoring Period: July 19 – July 23, 2021
Water Quality Monitoring Period: July 12 – July 16, 2021
Water Quality Monitoring Period: July 6 – July 9, 2021
Water Quality Monitoring Period: June 28 – July 2, 2021
Water Quality Monitoring Period: June 21 – June 25, 2021
Water Quality Monitoring Period: June 14 – June 18, 2021
Water Quality Monitoring Period: June 7 – June 11, 2021
Water Quality Monitoring Period: June 1 – June 4, 2021
Water Quality Monitoring Period: May 24 – May 28, 2021
Water Quality Monitoring Period: May 17 – May 21, 2021
Water Quality Monitoring Period: May 10 – May 14, 2021
Water Quality Monitoring Period: May 03 – May 07, 2021
Water Quality Monitoring Period: April 26 – April 30, 2021
Water Quality Monitoring Period: April 19 – April 23, 2021
Water Quality Monitoring Period: April 12 – April 16, 2021
Water Quality Monitoring Period: April 5 – April 9, 2021
Water Quality Monitoring Period: March 29 – April 2, 2021
Water Quality Monitoring Period: March 22 – March 26, 2021
Water Quality Monitoring Period: March 29 – March 2, 2021
Water Quality Monitoring Period: March 15 – March 19, 2021
Water Quality Monitoring Period: March 8 – March 12, 2021
Water Quality Monitoring Period: March 1 – March 5, 2021
Water Quality Monitoring Period: February 22 – February 26, 2021
Water Quality Monitoring Period: February 15 – February 19, 2021
Water Quality Monitoring Period: February 8 – February 12, 2021
Water Quality Monitoring Period: February 1 – February 5, 2021
Water Quality Monitoring Period: January 25 – January 29, 2021
Water Quality Monitoring Period: January 18 – January 22, 2021
Water Quality Monitoring Period: January 11 – January 15, 2021
Water Quality Monitoring Period: January 4 – January 8, 2020
Water Quality Monitoring Period: December 28 – December 31, 2020
Water Quality Monitoring Period: December 21 – December 24, 2020
Water Quality Monitoring Period: December 14 – December 18, 2020
Water Quality Monitoring Period: December 7 – December 11, 2020
Water Quality Monitoring Period: November 30 – December 04, 2020
Water Quality Monitoring Period: November 23 – November 25, 2020
Water Quality Monitoring Period: November 16 – November 20, 2020