National Grid’s Remediation Contractor continued with site mobilization and preparation activities, which included the delivery of construction materials, and additional equipment and supplies. The installation of the construction support trailers, sanitary holding tanks, office equipment, and utility connections also continued. Personal decontamination pad construction and further delineation of work zones (exclusion, decontamination, and support) continued. Maintenance of the interior access roads, parking areas, clean fill stockpile covers, and equipment and materials staging area was performed Scheduling and planning for the upcoming perimeter utility cut and cap excavations continued.  The Remediation Contractor processed disposal facility approvals, authorizations and documentation in preparation for the scheduled utility perimeter cut and cap activities. Odor and dust suppression activities were conducted as necessary. In addition, the Project Team participated in meetings with local representatives regarding the operation of the community air monitoring program (CAMP) and planned on-site worker emergency response programs.  National Grid’s consulting engineer completed the calibration and start-up of the fixed-base perimeter air monitoring system, and continued to monitor the site activities with the CAMP equipment.

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 “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), Naphthalene 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 January 19, 2009 through January 25, 2009, six fixed based CAMP units and one portable CAMP unit were in-use and measured TVOC and PM10. Fifteen-minute averages for TVOC and PM10 data remained in Operational Condition. No elevated readings for TVOC or PM10 were reporting during the weekly monitoring period. Weekly Reports of the CAMP data can be found as a separate tab in the Weekly Report Archive section.

For the week of January 26, 2009 through January 30, 2009, the final installation of the support trailers and utility connections (i.e., phone, cable, water, and sanitary tanks) is scheduled for completion. Perimeter cut and cap excavation activities are scheduled to continue in the northeast corner of the Site with off-site transport and disposal of excavated material at an approved and licensed disposal facility. Demolished concrete removed from the northeast corner will be relocated and staged in the southwest corner of the Site for future crushing and reuse in accordance with the necessary NYSDEC approvals. Personnel decontamination shelter, equipment decontamination station, and stabilized construction entrance installation activities are scheduled for completion. Odor and dust suppression activities will be conducted as necessary. National Grid’s consulting engineer will continue to monitor the site activities with CAMP equipment.