Update Week Ending October 05, 2012

Remedial Contractor Continues Site Remediation

Systematic Excavation and Backfill Continues Beneath the Temporary Fabric Structure

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 backfilling excavated areas of the Site with clean backfill.
• Continued the excavation and backfill of shallow excavation areas of the Site along the northern perimeter and adjacent to Willow Avenue and Bay Street.
• Continued the use of the clean sand from beneath the one-story building slab and foundation for reuse as backfill beneath TFS position #7.
• 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.
• Continued treating ground water (removed to support excavation) and treated and discharged from the treatment plant.

Recently completed activities:

• Relocated the TFS to position #7 eastward and initiated excavation, loadout, and transportation of impacted material for proper disposal.
• Completed excavation and backfilling of shallow excavation areas at the western area of the Site in the vicinity of the storm water piping buffer zone.

Future near-term activities:

• Relocate the TFS to position #8 and begin excavation, loadout, and transportation of impacted material for proper disposal.
• Complete backfilling beneath TFS position #7.
• Complete the excavation and backfilling of shallow excavation areas at the northern areas of the Site.
• Complete the excavation and backfilling of shallow excavation areas along Willow Avenue and Bay Street.
• Initiate perimeter Site restoration including the replacement of the sidewalk along Bay Street.

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 fifteen-minute exceedances of odor action levels associated with ground intrusive site activities during this reporting period. There were periods of Particulate Matter (PM-10) [dust] above the action level at an upwind station attributed to offsite activities and periods of Total Volatile Organic Compounds (TVOC) above the action level attributed to surveyors spray painting mark-outs adjacent to the air monitoring station. The construction manager was notified and levels immediately dropped below the action and alert levels.

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