Sampling continued this week to fill in locations within the sampling boundaries for the Bennington/North Bennington site.
Final report on soil sampling in surrounding areas of Chemfab --
summary of soil sampling results
from a draft report produced by Saint-Gobain's contractor were shared back in April 2016. That report has been reviewed and approved by the Vermont DEC, pending the submission of original data sets. In review, here are the major findings from the soil testing survey:
- The majority of soil samples have less than 10 ug/kg (ppb) of PFOA, and all samples were below Vermont Soil Screening Values of 300 ppb.
- There is no trend in the average perfluorinated compounds (PFCs) and average PFOA concentration data within increasing depth below surface.
- There appears to be a linear declining trend between highest average of total PFCs and PFOA, and the distance from the site.
The full report is available online, as is DEC's response letter to the submitted report.
Saint Gobain's consultant, CT Male Associates, has acknowledged receipt of this letter and confirmed that they will be working on performing the recommendations made in the letter.
DEC still awaiting re-sampling plan for wells under 20 parts per trillion -- The resampling plan to be submitted by Saint-Gobain's contractor CT Male
is still yet to be submitted. The plan will outline
a strategy to re-sample wells where PFOA was non-detect or below 20 parts per trillion. The plan was expected 3 weeks ago. Saint Gabain has indicated that they are working on finalizing the plan for submittal.
The resampling plan is need to confirm that drinking water wells in the Bennington area remain below the state's Health Advisory for PFOA and the water is safe to drink.