Update for the Week Ending March 3, 2017

Site Remediation Continues

Deep Excavation Nears Completion:

  • Continued the application of water for dust control;
  • Continued the application of 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 pad to the water treatment plant (WTP);
  • Continued operation and maintenance of the WTP;
  • Continued the disassembly of the temporary fabric structure (TCB);
  • Continued backfilling in the eastern shallow excavation area with select fill;
  • Continued compaction of the backfill lifts;
  • Continued compaction testing of the backfill lifts; and
  • Continued decontaminating and demobilizing equipment from the Site.

Upcoming activities:

  • Cut all SOE wall sheet piles to five feet below final Site grade;
  • Complete backfilling in the deep excavation; and
  • Complete excavation and backfilling in the western shallow excavation area.

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 15-minute Action Limit exceedances for Total Volatile Organic Compounds (TVOC) or odors.

The Action Limit 150 ug/m3 for Particulate Matter (PM-10) [dust] was exceeded at AMS-3 on February 28, 2017, from 8:09 a.m. to 8:26 a.m. During this time, an excavator’s exhaust was observed blowing onto the station.  When the equipment was relocated, dust levels returned to normal operational conditions.

The Action Limit of 150 ug/m3 for dust was exceeded at AMS-3 on March 2, 2017 from 1:41 p.m. to 2:04 p.m.  During this time, the vapor management system carbon beds were being moved during high winds.  The Contractor applied water to the area, and dust concentrations returned to normal operational conditions.

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

Removing fabric from the TCB.

Disassembling the TCB fabric and supports.

Disassembling the TCB superstructure.

Disassembling the TCB superstructure.

Preparing the TCB components for demobilization from the Site.

Decontaminating equipment prior to demobilization from the Site.