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Study
2.
Delineate the need for
remediation of TCE in groundwater.
Objective.
To delineate the need for remediation of TCE in groundwater.
Site Information:
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TCE reported at concentrations as
high as 890 ppb in groundwater beneath commercial business park.
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No
known source of contamination on site.
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Two
years of quarterly groundwater monitoring data.
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Groundwater at about 55 ft bgs. |
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Click on the graphic for a larger view. |
Sampling Strategy
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Designed
multi-depth soil gas sampling strategy.
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Performed
modeling to predict TCE contaminations in indoor air above "hot spot" |
Results
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Modeling results
predicted indoor air contaminations of TCE would be below risk-based
regulatory thresholds. |
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Multi-depth
soil gas sampling corroborated model predictions.
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Quantification of residual mass in soils and groundwater reveled no
significant onsite source.
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Groundwater
monitoring data over showed stable plume.
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Obtained
No Further Action
Letter
from regulatory agency.
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Facilitated
sale of property for considerably more than it’s previously assessed value. |
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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