2021 Progress Updates

Progress Update, Week of November 1, 2021

During the week of November 1, the Gowanus Remediation Team (GRT) completed sediment removal at the Union Street Bridge. Sediment was removed using a vacuum truck staged on the roadway.

The demonstration testing for In-Situ Stabilization (ISS) was completed and the associated equipment was demobilized. ISS is scheduled to resume within RTA1 in December.

The GRT began mobilizing equipment in preparation for sheet pile bulkhead installation work near the head of the canal.

Photos of construction activities are provided below.

Mobilizing a work barge with a crane to support upcoming bulkhead installation

Staging sheet piles for upcoming bulkhead installation.

Progress Update, Week of November 8, 2021

During the week of November 8, the Gowanus Remediation Team (GRT) continued mobilizing equipment and materials in preparation for sheet pile bulkhead installation work near the head of the canal.

Pipe pile cutting continued at the Carroll Street Bridge. Pipe piles that were installed within the navigational channel are being cut to an appropriate height.

Analysis of the In-Situ Stabilization (ISS) demonstration test results is ongoing.

Photos of construction activities are provided below.

Lowering a cutting tool into a pipe pile at the Carroll Street Bridge.

Mobilizing equipment and materials for bulkhead installation.

Progress Update, Week of November 15, 2021

During the week of November 15, the Gowanus Remediation Team began installing sheet pile bulkheads near the head of the canal.

Pipe pile cutting continued at the Carroll Street Bridge. Pipe piles that were installed within the navigational channel are being cut to an appropriate height.

Analysis of the In-Situ Stabilization (ISS) demonstration test results is ongoing. Mobilization for full scale ISS will begin over the coming weeks.

Photos of construction activities are provided below.

Photograph #2 – Mini hopper with Giken/auger landed at the 50’ x 160’ platform.

Continued pipe pile cutting at the Carroll Street bridge.

Moving a sheet pile on location near the head of the canal.

Progress Update, Week of November 22, 2021

During the week of November 22, the Gowanus Remediation Team continued sheet pile bulkhead installation work near the head of the canal. Sheet piles were prepared for installation.

Pipe pile cutting at the Carroll Street Bridge was completed. Pipe piles that were installed within the navigational channel were cut to an appropriate height.

Analysis of the In-Situ Stabilization (ISS) demonstration test results remains ongoing. Mobilization for full scale ISS will begin over the coming weeks.

Photos of construction activities are provided below.

Cutting pipe piles at the southwest corner of the Carroll Street bridge.

Starter sheet piles installed at the headwall.

Progress Update, Week of November 29, 2021

During the week of November 29, the Gowanus Remediation Team continued sheet pile bulkhead installation work near the head of the canal. Sheet piles were installed at the head of the canal near Butler street. Workers cut installed sheet piles as needed to expose combined sewer overflow outfalls.

Analysis of the In-Situ Stabilization (ISS) demonstration test results were concluded this week. Crews began mobilizing for commencing full ISS production. Next week ISS will begin for RTA-1.

Photos of construction activities are provided below.

Lifting a sheet pile from a mini hopper barge using the a crane.

Additional installed sheet piles at the headwall.

Sheet pile installation in progress at the head of the canal.

Cutting sheet piles in front of combined sewer overflow outfalls.

Progress Update, Week of December 6, 2021

During the week of December 6, the Gowanus Remediation Team continued sheet pile bulkhead installation at the head of the canal near Butler Street. Sheet piles were installed along the west side of the canal.

Full production In-Situ Stabilization (ISS) began this week. ISS was conducted within RTA-1, including at the Carroll Street Bridge. Mobilization for a second ISS production barge group is ongoing.

Photos of construction activities are provided below.

Sheet pile installation near Butler Street, along the west side of the canal.

Continued sheet pile installation near Butler Street, along the west side of the canal.

ISS in progress near the Carroll Street Bridge.

ISS in progress north of Carroll Street.

Progress Update, Week of December 13, 2021

During the week of December 13, the Gowanus Remediation Team continued In-Situ Stabilization (ISS) within RTA-1. Mobilization for a second ISS production barge group is ongoing.

Work continued on the sheet pile bulkhead installation at the head of the canal. Recently installed sheet piles were cut to an appropriate height and sealed.

Photos of construction activities are provided below.

ISS barges off the Bond Street promenade.

ISS barges working on the west side of the canal.

Cutting sheet piles at the canal head to final elevation.

Progress Update, Week of December 20, 2021

During the week of December 20, the Gowanus Remediation Team continued In-Situ Stabilization (ISS) within RTA-1. Mobilization for a second ISS production barge group is ongoing.

Work continued on the sheet pile bulkhead installation at the head of the canal. Recently installed sheet piles were cut to an appropriate height and sealed.

Photos of construction activities are provided below.

ISS in progress at the east side of the canal.

Continued ISS at the east side of the canal.

Removing a cut section of a sheet pile at the canal headwall.

A diver preparing to dive to cut sheet piles at the headwall.

A submerged diver cutting a sheet pile at the headwall.

Progress Update, Week of December 27, 2021

During the week of December 27, the Gowanus Remediation Team continued In-Situ Stabilization (ISS) along the Bond Street Promenade.

Work continued on the sheet pile bulkhead installation at the head of the canal. Recently installed sheet piles were cut to an appropriate height and sealed.

Next week, site clearing will begin at the former Turning Basin 1 (TB1). The filled-in turning basin will be excavated as a part of the cleanup.

Photos of construction activities are provided below.