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 Background
Biogenie was selected to design and implement a remedial solution
for this former manufactured gas plant and gas storage site. Due to
the nature of the new redevelopment project, a great portion of the
project had to be performed in a very short time frame (12 weeks).
In order to respect the deadline, a dig and haul solution was
selected.
Solution
Utilizing the investigation data to perform a 3D visualization of
the contaminated site, Biogenie gained a comprehensive understanding
of the site and as a result, proposed a turnkey and totally
guaranteed (fixed-price) remedial solution. This solution provided
our client with substantial cost savings as the estimated volume of
source material was significantly reduced.
Key elements of the remediation strategy were: (1) Dewatering of the
site to expedite excavation activities; (2) On-site segregation of
the clean soil and debris from the source material; and (3) Backfill
management, including reuse of the crushed concrete that provided
additional cost-savings for the reconstruction project. Overall,
236,000 tons of material were managed, 69,000 tons of contaminated
soil and tar residue were landfilled and 6,100 m3 of concrete
foundations were demolished.
Services
- 3D
visualization of the contaminated site;
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Supplemental site investigation;
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Design of a Remedial Action Plan, including a Health and Safety
Program;
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Construction and operation of a dewatering system to lower the
water table as required to expedite excavation activities;
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Management of 53 M liters of water prior to its discharge into the
public sewer system;
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Excavation and landfill of 69,000 tons of source material consisting of soil contaminated with fuel oil and tar residue;
some of the excavation was carried out beneath an interstate
highway bridge, as well as an active natural gas medium pressure
pipeline;
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Segregation and disposal of debris;
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Backfill management as a function of the intended site
redevelopment project;
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Preparation of the Remedial Action Completion Report.
This
project clearly illustrates the strengths of Biogenie’s 3D
visualization tool, while demonstrating outstanding contracting and
project management capabilities that provided multi-million dollar
cost savings to our client.
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