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Contamination of soils is becoming an increasing concern for developers as awareness of the dangers of contamination becomes more known. In establishing levels of contamination the nature of the “speciation” of the contaminant in the soil is becoming increasingly recognised as of major importance.
"Speciation of trace elements is the only rational approach to unravel mechanisms underlying the beneficial and harmful effects of trace elements in man".
For many years, John Grimes Partnership has recognised the importance of this approach to metalliferous mining contamination in the South West of England. Since the publication of the Contaminated Land Environmental Assessment (CLEA) guidelines, such an approach is the only viable means of demonstrating whether a site can be considered safe or not, potentially saving the client huge costs in unnecessary remediation.
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Validation of test results is often key to providing a robust, defensible risk assessment, and John Grimes Partnership has developed and validated a method of arsenic speciation. We also offer a range of sequential extraction methods for the operationally determined partitioning of contaminants in soils which can justify the safety of higher levels of contamination than would otherwise be possible.
We also have extensive experience in successfully justifying the use of PBET testing for a range of inorganic contaminants including Arsenic, Cadmium, Chromium and Nickel; contaminants which commonly occur on metalliferous sites. In simple terms, PBET testing enables us to identify how much of the contaminant could harm humans. |
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