National Grid’s Remediation Contractor continued with site remediation activities, which included the delivery of construction materials, imported backfill material (stone and common fill), and construction equipment and supplies. Placement of imported clean backfill material and compaction was completed within the Tent Position #8 Shallow Excavation Area. The tent was relocated from Tent Position #8 northeast to a temporary staging area adjacent to the next Tent Position. Tent relocation activities included the temporary disassembly and staging of tent anchors and the vapor management system (VMS), temporary removal of the central panel, end panels and access doors, followed by the relocation of the two tent sections.

Maintenance of the decontamination areas, work zones, on-site gravel access roads, parking areas and material staging areas, the imported backfill material (i.e., clean fill) stockpile covers, the perimeter privacy screen, and soil erosion and sediment control (SESC) measures continued. Odor and dust suppression activities were conducted, as necessary. National Grid’s consulting engineers continued to monitor the site activities with the fixed base community air monitoring program (CAMP) equipment.

During the period from January 11, 2010 through January 17, 2010, six fixed base CAMP units and one portable CAMP unit were in-use and measured total volatile organic compounds (TVOC) and particulates (PM10). Fifteen-minute averages for both TVOC and PM10 data remained in the Operational Condition. Elevated PM10 measurements were reported on January 13, 2010. These PM10 measurements were not associated with ground intrusive activities.  Weekly Reports that summarize the CAMP data and the elevated measurements can be found as a separate tab in the Weekly Report Archive section.

For the week of January 18, 2010 through January 22, 2010, Tent Position #8 relocation northeast to the next Tent Position is scheduled for completion. Tent relocation activities will include the movement of the two temporarily staged tent sections and replacement of the central panel, access doors, and end panels.  The temporary fabric enclosure supports, tent anchors, and VMS will also be reset during this phase of the tent position relocation. Odor and dust suppression activities will be conducted as necessary. Work zone delineation, site maintenance activities, and CAMP operation monitoring activities will continue.

On January 12, 2010 the National Grid Project Team participated in a public meeting with Community Board # 14. The purpose of the meeting was to provide an update on the progress of the on-going remediation project and provide a schedule for the remainder of the 2010 remedial activities.