|
 Background
This site, spanning an area of 9 acres, was host to a manufactured
gas plant for some 70 years. The plant’s aboveground structures were
dismantled and removed in the mid-70s. However, underground
structures, such as tanks, gas and oil pipes and concrete
foundations of former buildings, together with the PAH-contaminated
soil remained an issue of concern. As the site was located in a
residential area, specific measures had to be devised to minimize
the impact of the remediation work on residents.
Solution
With the supplemental investigation and treatability study results
on hand, Biogenie proposed a comprehensive remedial solution that
relied, to a great extent, on the on-site biological treatment of
the contaminated soil. Specific prevention and monitoring measures
to ensure the well being of the nearby residents were instrumental
in gaining public acceptance. The measures that were put into place
included: soil pretreatment prior to excavation; excavation under a
mobile shelter; monitoring of dust fallout, suspended particles and
PAHs with four air sampling stations.
Services
-
Supplemental site investigation and treatability study;
-
Design of the remedial solution;
-
Overall project management;
- Site
ventilation prior to excavation with an in situ venting process
for volatile compound extraction and treatment;
-
Excavation of 150,000 tons of soil under a mobile shelter to
minimize dust fallout, noise and odor emissions;
-
Ex
situ Biopile treatment of 100,000 tons of PAH-contaminated soil;
-
Management of 10,000 tons of debris (concrete, brick, iron) as
well as waste (wood shavings, tar);
-
Confinement and treatment of 25,500 m3 of groundwater;
-
Project and post-project environmental monitoring (air quality and
groundwater);
-
Tactical landscaping of the remediated site in view of future
development;
-
Production of reports.
« Back |
