Update for the Week Ending March 25, 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 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 operation of the water treatment plant (WTP) and discharge to the sewer;
  • Continued the full scale In-Situ Stabilization (ISS) Bucket Soil Mixing (BSM) in the Holder No. 2 tank;
  • Continued pre-drilling for deep obstruction identification and removal along the alignment of the SOE wall;
  • Continued crushing clean, reusable concrete and soil for use as backfill in the deep excavation; and
  • Continued the lining, loading, and shipment of trucks of impacted soils to Bayshore Soil Management for treatment and disposal:
    • 6 trucks; 157.17 tons shipped last week; and
    • 1,422.32 tons shipped to date.

Recently completed activities:

  • Completed the ISS BSM stabilization of four cells in the Holder No. 2 tank. Fifteen of twenty cells have been stabilized to date.

Upcoming activities:

  • Conduct a demonstration test for sheet pile installation for the support of excavation (SOE) wall for the deep excavation;
  • Continue the lining, loading, and shipment of trucks of impacted soil to Bayshore Soil Management for treatment and disposal;
  • Ship removed asphalt for recycling; and
  • Install dewatering wells and initiate deep ground water extraction.

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 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 March 23, 2016, due to dust from the rock crusher.  Additional water was applied during crushing, and the dust levels decreased below the Action 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

Stockpiling crushed rock and other material to use as backfill for the deep excavation area.

Applying water for dust control during rock crushing activities.

Loading lined trucks for the shipment of impacted material to Bayshore Soil Management for treatment and disposal.

Predrilling for deep obstruction identification along the SOE wall alignment.

Conducting ISS BSM in the Holder No. 2 tank beneath the temporary containment building (TCB).

Applying odor suppression foam during the ISS BSM to control odors and TVOCs.

Installing a second truck entrance door on the TCB to control odors.