Weekly Activities

November 9, 2015: Posillico, National Grid’s Remediation Contractor, has completed drilling approximately half the length of the barrier wall along the alignment to further clear any potential obstructions that may impede barrier wall installation. Installation of the 70-ft sheet piles has begun on the east side of the alignment. Grading along the western edge of the property had also been initiated.

CAMP data is reviewed and compared to specific NYSDEC/NYSDOH approved criteria, known as “Action Limits.” As a result of this evaluation process, site conditions are categorized into two categories, “Operational Condition” and “Action Condition.” The “Operational Condition” is applicable when the data is below the “Alert, Response and Action Limits”, and means that normal operations can continue. The “Action Condition” occurs when one or more of the fifteen minute average measurements for Dust (PM10), Total Volatile Organic Compounds (TVOC) or Odor Intensity are greater than the background or upwind measurement by the specified “Action Limits.” Reaching an Action Level requires corrective action or stopping work until the condition is addressed or abates. During the period from Monday, November 9, 2015 through Friday, November 13, 2015, four portable CAMP stations were in-use and measured TVOC and PM10. Fifteen-minute averages for TVOC and PM10 data remained below the Action Limit.

For the week of November 16, 2015, grading will continue along the western and eastern edges of the property. Compaction tests will also be performed on the soil along bulkhead where the esplanade walkway will be installed and dispose of concrete debris currently staged on-site.