Update for the Week Ending May 20, 2016

Site Remediation Continues

On-going activities:

  • Continued the application of water and calcium chloride for dust control;
  • Continued the application of odor-suppressant foam and BioSolve for odor and dust control;
  • Maintained erosion and sediment (E&S) controls (Installed waddles - wood chip and straw filled fabric tubes - around the Site perimeter to prevent silt and sediment from leaving the Site and covered all stockpiles);
  • Continued operation of the water treatment plant (WTP) and discharge to the sewer;
  • Continued lining and loading trucks and shipping impacted soil to Bayshore Soil Management for treatment and disposal:
    • 32 trucks; 894.60 tons shipped last week; and
    • 3,159.60 tons shipped to date.
  • Continued excavation and installation of the cement/bentonite (CB) slurry trench for installation of the SOE wall sheet piles:
  • 93 linear feet installed last week; and
  • 156 of 629 linear feet installed to date
  • Initiated the installation of the sheet piles in the CB slurry trench:
    • 41 linear feet installed last week; and
    • 41 of 629 linear feet installed to date.

Recently completed activities:

  • Completed investigatory predrilling for obstruction identification along the alignment of the SOE wall.

Upcoming activities:

  • Relocate and expand the temporary containment building (TCB) over the SOE wall area in preparation for conducting the deep excavation;
  • Install deep wells for dewatering in preparation for conducting the deep excavation; and
  • Initiate the deep excavation within the SOE wall.

Community Air Monitoring Plan Summary

Community air monitoring, initiated on Tuesday, December 1, 2015, continues as intrusive (ground disturbance) activities are conducted.

There were no fifteen-minute Action Limit exceedances for Total Volatile Organic Compounds (TVOCs) or odors during this reporting period.

There was one instance of the fifteen-minute average concentration of Particulate Matter (PM-10) [dust] exceeding the applicable Action Limit on May 18, 2016, associated with welding being conducted adjacent to the air monitoring station.  The welding operation was relocated, and dust levels returned to below the Response Limit.

There was one instance of the fifteen-minute average concentration of Particulate Matter (PM-10) [dust] exceeding the applicable Action Limit on May 20, 2016, associated with the transfer and loading of bentonite at the grout plant.  Work was stopped, and the bentonite bags were removed by laborers instead of the fork lift, and dust levels returned to below the Response Limit.

If you have any questions or comments about the work on the Site, please use the Williamsburg MGP Telephone Hotline at (718) 403-3053.

Photos of Activity


Conducting investigatory pre-drilling for deep obstruction identification along the western alignment of the SOE wall.


Installing the CB slurry trench along the eastern SOE wall alignment.


Installing the CB slurry trench along the eastern SOE wall alignment.


Loading soil removed from the CB slurry trench for transfer to the lined containment area in the TCB.


Staging sheet piles in preparation for installation in the CB slurry trench.


Installing sheet piles in the CB slurry trench along the eastern alignment of the SOE wall.


Installing sheet piles in the CB slurry trench along the eastern alignment of the SOE wall.


Offloading cement at the grout plant for mixing grout for the CB slurry trench.