Update for the Week Ending November 25, 2016

Site Remediation Continues

On-going activities:

  • Continued the application of water for dust control;
  • Continued the application of foam and BioSolve for Total Volatile Organic Compounds (TVOC), Particulate Matter (PM-10) [dust], and odor 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 pumping from the decontamination pads, excavated areas, sumps and dewatering wells to the water treatment plant (WTP);
  • Continued operation of the WTP and discharge to the sewer;
  • Continued shallow excavation and backfilling in the western area of the Site;
  • Continued lining and loading trucks and shipping impacted soil to Bayshore Soil Management for treatment and disposal:
    • 107 trucks; 2,608.36 tons shipped last week; and
    • 38,616.89 tons shipped to date.
  • Continued deep excavation within the support of excavation (SOE) wall in the temporary containment building (TCB).

Upcoming activities:

  • Complete the load testing of the installed tiebacks for the SOE wall; and
  • Continued crushing and stockpiling reuse material to be used for backfill in the deep excavation on the eastern area of the Site.

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 (TVOC), Particulate Matter (PM-10) [dust], or odors during this reporting period.

There were multiple instances on Wednesday evening and Saturday morning, November 23 and 25, 2016, where benzene levels exceeded the Action Limit during nonworking hours.  Employees were called back to the Site to repair breaches and tears in the TCB fabric and to apply additional foam to the excavation in the TCB.   Once these items were addressed, benzene and TVOC 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

Installing liners in the trucks prior to loading with impacted soils.

Breaking subsurface concrete structures in the western shallow excavation area.

Loading lined trucks with impacted soils from the western shallow excavation area.

Transferring select fill for backfilling in the shallow excavation.

Excavating in the deep excavation and applying BioSolve for VOC and odor control.

Excavating and breaking subsurface structures in the deep excavation.