Update Week Ending September 21, 2012

Remedial Contractor Continues Site Remediation

Systematic Excavation and Backfill Continues Beneath the Temporary Fabric Structure

TFS position 6

On-going activities:

• Continued systematic excavation beneath the temporary fabric structure (TFS), load out and transportation of the material in lined, covered trucks for proper disposal.
• Continued systematic excavation beneath the temporary fabric structure (TFS), load out and transportation of the material in lined, covered trucks for proper disposal.
• Continued backfilling excavated areas of the Site with clean backfill.
• Initiated the excavation of impacted material beneath TFS position #6.
• Initiated backfilling beneath TFS position #6.
• Continued the excavation and backfill of shallow excavation areas of the Site.
• Initiated the use of the clean sand from beneath the one-story building slab and foundation for reuse as backfill beneath TFS position #6.
• Continued the use of an odor suppressant misting system on the perimeter fence and TFS doors and applied odor suppressant liquid, foam, and plastic sheeting to prevent odors from leaving the Site.
• Continued the application of water throughout the Site to prevent the formation of dust.
• Continued maintenance of erosion and sediment controls throughout the Site.
• Continued general housekeeping activities at the Site.
• Continued monitoring for noise, vibration, and settlement on Site and on neighboring properties.

Compacting backfill

Recently completed activities:

• Relocated the TFS eastward to position #6 and initiated excavation, loadout and transportation of impacted material for proper disposal.

Removing Underground Structures

Future near-term activities:

• Relocate the TFS eastward to position #7 and begin excavation, loadout and transportation of impacted material for proper disposal.
  
• Complete the excavation and backfilling of shallow excavation areas at the western areas of the Site.
  
• Complete the excavation and backfilling of shallow excavation areas at the northern areas of the Site.
  

Community Air Monitoring Plan Summary

Community air monitoring, initiated in February 2012, continues as intrusive activities are conducted by the remediation contractor at OU-2. There were no exceedances of action levels during this period.

Staten Island Community Board #1 One Edgewater Plaza Room 217 Staten Island, NY 10305 Phone #: (718) 981-6900

Borough President’s Office Borough Hall Staten Island, New York 10301 Phone #: (718) 816-2057