Update - Week of May 29, 2017

Site Work

National Grid and its contractors are working at the site on the NYSDEC-approved In-Situ Treatment Interim Remedial Measure (IRM).  The work the week of May 30, 2017 will be hand clearing injection locations and completing injections.

The In-Situ Treatment IRM calls for the placement of gypsum slurry into the ground at 58 locations.  Gypsum dissolves into sulfate, which is used to enhance naturally occurring biological degradation of petroleum hydrocarbons in groundwater.

The In-Situ Treatment IRM began in April, and since beginning the majority of the hand clearing has been completed and 39 injection locations have been completed (through May 22, 2017).  The work is anticipated to continue through the week of  June 5.

National Grid's contractor is conducting the Community Air Monitoring Program (CAMP) during the work. The CAMP monitors for particulate matter and volatile organic compounds, and work is stopped if any of the identified limits are exceeded.  There have been no exceedances of the CAMP limits during the work to date.

Building construction work is being conducted by the property owner. The building construction work is beyond the limits of planned remediation at the site or will otherwise not interfere with the completion of the required IRMs at the site.