Activity Updates

National Grid provides activity updates for neighbors of the Clifton former MGP site as developments related to site remediation occur. The updates will describe the work that is on-going at Operable Unit 2 (OU-2), located at 25 Willow Avenue, to remediate the former main operating portion of the Site that was closed in 1957. Two off-site areas with MGP residuals are located adjacent to the OU-2 Site at 89 Willow Avenue and between Edgewater Street and Bay Street at 1 Edgewater Street.

Remedial activity for Operable Unit 1 (40 Willow Avenue) has been completed and the parcel is now in the Operations, Maintenance & Monitoring (OM&M) phase. There will be no further updates for OU 1, but monitoring and other reports will be placed in the Key Documents/Major Reports section of this website as they are completed and approved. The Report Archive section under the Key Documents tab of this website will include all of the Updates.

Update Week Ending August 24, 2012

Remedial Contractor Continues Site Remediation

Systematic Excavation and Backfill Continues Beneath the Temporary Fabric Structure

Compaction testing backfill in TFS position 3

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 breaking the concrete slab and foundation from the one-story warehouse building and load-out of the concrete for recycling.
  • Continued stockpiling clean sand from beneath the one-story building slab and foundation for reuse as backfill on Site.
  • Continued the use of an odor suppressant misting system on the perimeter fence, TFS doors, 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.

TFS position 3 backfilling with vinyl door and air filtering system in place

Recently completed activities:

  • Completed excavation beneath position #3 of the TFS and continued backfilling.
  • Initiated preparation for relocation of the TFS to position #4 northward.

scraped clean concrete barrier wall in TFS position 3

Future near-term activities:

  • Complete the placement of backfill beneath TFS position #3 and relocate the TFS to position #4.
  • Complete the breaking and removal of the concrete slab and foundation from the former one-story warehouse building.
  • Complete backfilling shallow excavation areas at the western areas of the Site.
  • Initiate 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

If you have any questions or comments about the work on the site, please use the Site Telephone Hotline at 718-982-7349.