Update for the Week Ending January 20, 2017

Site Remediation Continues
Deep Excavation Nears Completion

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 deep excavation within the support of excavation (SOE) wall in the temporary containment building (TCB);
  • Continued backfilling in the deep excavation with stone, reuse soil, and select fill;
  • Continued compaction of the backfill;
  • Continued compaction testing of the backfill lifts; and
  • Continued lining and loading trucks and shipping impacted soil to Bayshore Soil Management for treatment and disposal:
    • 59 trucks; 1,464.10 tons shipped this week; and
    • 62,921.85 tons shipped to date.

Upcoming activities:

  • Complete the deep excavation in the TCB;
  • Cut all SOE wall sheet piles to five feet below final Site grade;
  • Complete backfilling in the deep excavation;
  • Disassemble and demobilize the TCB; 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), Particulate Matter (PM-10) [dust], or odors.

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

Excavating, stockpiling, and loading lined trucks with impacted soils in the southern portion of the deep excavation (30 feet deep excavation limit).

Spreading select fill backfill over the reuse material in the deep excavation area.

Transferring select fill from the stockpile to the TCB.

Offloading select fill directly into the TCB.

Spreading select fill on the northern end of the deep excavation and stockpiling impacted material on the southern end of the deep excavation while applying foam for VOC and odor control.

Placing, grading, and compacting select fill backfill lifts.

Conducting compaction testing of the select fill backfill lifts.