Update Week Ending April 6, 2012

Remedial Contractor Continues Mobilization
and Site Preparation for Remediation

Conducting pre-clearance trenching

Water Treatment Plant

Tent being relocated

On-going activities:

• Continue pre-clearance trenching (shallow excavation) along Willow Avenue on the western end of the Site (see photograph). Odor suppression foam is applied during trenching activities to suppress odors that may emanate from the site (see photograph).
• Site preparation activities at the support area at 40 Willow Avenue include testing the Water Treatment Plant in preparation for start-up (see photograph).
• Site preparation activities at areas to be remediated at the 25 and 89 Willow Avenue properties include: positioning barriers with fencing and wood panels for the sound attenuation barrier, installing soil and sediment erosion controls, and preparing the interior of the building for the demolition of the warehouse building.
• General housekeeping activities at the Site.
  

Recently completed activities:

• Relocated the Temporary Fabric Structure (TFS) northward on the Site to continue pre-clearance trenching along Willow Avenue (see photograph).
  

Future near-term activities:

• Complete the Level A Subsurface Utilities Investigation (SUI) test pit installation along Bay Street sidewalk adjacent to the gas lines.
• Install the WTP effluent (treated water) discharge line into the Willow Avenue storm water pipe.
• Complete the baseline surveys for noise, vibration and settlement in preparation for remedial construction activities for OU-2.
• Complete assembly and installation of the sound attenuated barrier and fencing around the OU-2 Site (25 and 89 Willow Avenue properties).
• Complete interior preparation activities and initiate demolition of the warehouse building.
  

Community Air Monitoring Plan Summary

Community air monitoring was initiated in February 2012 to support the Level A SUI activities involving small test pit excavations at 25 Willow Avenue to identify subsurface utilities. CAMP monitoring continues for the OU-2 activities, and there were no exceedances of action levels during this period. Weekly reports can be found on this website in the Key Documents/Major Reports/Weekly Reports Archive/CAMP folder.