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Assessment Phase

ITRC QUEST > Assessment Phase > Site Characterization > Investigation Methods > Incremental Sampling Methodology (ISM)
Incremental Sampling Methodology (ISM)
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Incremental sampling methodology is a structured composite sampling and processing protocol that reduces data variability and provides a reasonably unbiased estimate of mean contaminant concentration in a volume of soil targeted for sampling.

Incremental Sampling Methodology (ISM-1)
Executive Summary
ISM is a structured composite sampling and processing protocol that reduces data variability and provides a reasonably unbiased estimate of mean contaminant concentrations in a volume of soil targeted for sampling.

Incremental Sampling Methodology (ISM-2)
Section 1 (Introduction)
Describes ISM and how it is applied to sample sites.

Soil Background and Risk (SBR-1)
Section 9.4.3 (Incremental Sampling Methodology)
ISM is a structured sampling and processing protocol that reduces data variability and is a superior methodology to provide an estimate of mean contaminant concentrations in a defined volume of soil.