System Operating Successfully
The Air Sparging/Soil Vapor Extraction (AS/SVE) System at
the site has been in operation for approximately five months.
The consultant for the site, ECSMarin of Richmond, Vermont
has submitted a report outlining the performance of the remedial
system for the first three months of operation.
The ECSMarin report estimates that approximately 310 pounds,
or 52 gallons of gasoline have been removed by the AS/SVE
system from the former gaoline underground storage
tank area since August. ECSMarin is currently
planning enhancements to the system to increase the recovery
rate. ECSMarin personnel will be visiting
the site regularly to perform maintenance activities and to
collect data and samples in Area I that will allow the effectiveness
of the AS/SVE system to be evaluated.
Excavation Work Completed
ECSMarin also completed excavation
of contaminated soils at the site in October.
The final excavation work was the removal of underground
pipelines that were connected to the drywell that was discovered
in Area 2 earlier this year.
All together, approximately 220 cubic yards of contaminated
soils have been removed from Area 2 and disposed of off-site.
The area has been backfilled
with clean fill. At
the request of the Gerrish Corporation, the VTDEC is reviewing
the corrective action plan (CAP) requirement for interim paving
over certain areas of the site. With the removal of contaminated soil and the placing of clean
fill, the risk of exposure to contaminated soils may have
been mitigated. Any
proposed changes to the CAP would be announced in a future
issue of this newsletter, with an opportunity for the public
to comment on the changes.
Water Supply Well
The decommissioning of the on-site water was completed on
September 12, 2002. A video survey of this well
performed earlier in 2002 revealed that this well was slowly
filling itself with native materials.
The well was filled from the bottom to the top with
a cement grout. This
will prevent any future use, and also eliminate the chance
for contaminants to enter the well from the surface, or to
migrate between fractures within the well itself.
In late December 2002, the parties came to an agreement regarding
several of the administrative issues involving this site.
The state agreed to release its lien on the Woodstock
granted to it as security as part of the 1999 Settlement agreement.
Release of this lien allowed the Gerrish Corporation
to mortgage the property, with the proceeds of the loan paid
to the Town of Woodstock to settle the outstanding property
tax bill on the property.
The Gerrish Corporation also arranged for purchase
of environmental insurance for the site that provides up to
$1 million worth of coverage (with a $100,000 deductible)
for contamination that might be discovered during the redevelopment
of the property. The
term of the policy is 10 years.
Discussions are continuing regarding institutional
Questions about the Gerrish Motors / Woodstock
East cleanup? Contact the VTDEC Project Manager