National Grid’s Remediation Contractor continued with site mobilization and preparation activities, which included the delivery of construction materials, and additional equipment and supplies. Also, the installation of the construction support trailers, sanitary holding tanks, office equipment, and utility connections continued. Demolition of surface concrete commenced in the area of the former electrical substation and utility poles were removed. A second decontamination pad was constructed and maintenance activities continued on the site access roads, parking areas, clean fill stockpile covers, and equipment and materials staging area. In addition, 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. National Grid’s consulting engineer continued to monitor the site activities with community air monitoring program (CAMP) equipment. The noise and vibration monitoring program was conducted during the concrete breaking activities.

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 5, 2009 through January 9, 2009, six portable CAMP locations 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 12, 2009 through January 16, 2009, the final installation of support trailers and utility connections (i.e., electric, phone, cable, and water) is scheduled. The Remediation Contractor is also scheduled to commence the perimeter utility cut and cap excavations and two foot Site Wide Cap excavations in the northeast corner of the site. Impacted soils from these excavations will be placed in lined and tarp-covered trucks for off-site disposal at an approved facility. Personnel decontamination shelter and equipment decontamination station construction is scheduled for completion. National Grid’s consulting engineers will install the fixed base CAMP units. Odor and dust suppression activities will be conducted as necessary. National Grid’s consulting engineer will continue to monitor the site activities with portable CAMP equipment and then the fixed based CAMP equipment.