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 Emergency
Spill Response
The
project was initiated as a late night emergency spill response.
A release of fuel oil from a UST caused petroleum product to collect
under a nearby underground parking garage foundation. ENSAT was
able to prevent product from entering the city sanitary sewer system
by its quick response. The leaking 20,000-gallon UST and underlying
contaminated soil were removed and interim product recovery operations
were performed. ENSAT assessed the extent of contamination and determined
aquifer characteristics and remedial options. Conceptual and mechanical
remedial designs were developed applying an innovative design which
allowed a single treatment system to economically address contamination
in the area of the former UST and under the parking garage. The
remediation system incorporated a single high-vacuum positive displacement
blower to recover total fluids (i.e., vapor, water, and product)
from 10 recovery wells and vapor only from two additional wells.
ENSAT
conducted asbestos surveys in the site buildings, designed removal
specifications, and developed maintenance procedures for asbestos
that would remain in the building. This work was conducted in phases
and took several years to complete.
ENSAT
responded to a second emergency hazardous material spill incident
at the site when a fuel line strainer gasket in the penthouse mechanical
area ruptured. Fuel from the line leaked into the building interior
through expansion joints and affected seven floors of the building.
ENSAT addressed indoor air quality issues resulting from the release.
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