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Study
4.
Determine the most cost-effective strategy for
remediating soils containing DDT.
Objective.
Determine the most cost-effective strategy for remediating soils containing DDT.
Site Information
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Approximately 70-acre site used for
storage and blending of pesticides
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Client wanted
to acquire property for redevelopment as a commercial/industrial site but faced
prohibitive costs (approx. $400,000) of remediating a foot of soil across almost
the entire property.
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Click on the graphic for a larger view. |
Sampling Strategy
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Performed a
risk-based evaluation of existing soil sampling data
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Mapped the
concentrations of potentially carcinogenic pesticides, including DDT, using
GIS software
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Developed
statistical model for predicting areas that might contain DDT above risk-based
regulatory thresholds |
Results
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Performed a
titration of costs of sampling and removal of contaminated soil versus value
of clean (post-remediation) property.
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Spatial
mapping of DDT concentrations in soil in conjunction with statistical modeling
reveled that excavation of only a few selected "hot spots" and capping of
portions of the site would yield the most cost effective remediation
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Client was
able to accomplish this at minimal expense (less than $50,000) and acquire the
property |
For more
information about Risk-Based Decisions, Inc. call (916) 923-0570,
send
email or complete
our
online information request form.
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