This guidance provides practitioners with recommendations for planning, collecting, processing, and interpreting incremental samples to obtain more representative and reproducible data.

Clarification of information in Incremental Sampling Methodology (ISM-1, 2012) that is outdated, inconsistent, or potentially misleading. Please review this statement before reading the ISM-1 document.

Evaluates the performance of incremental sampling methodology, explains sampling design and laboratory considerations, and discusses its applicability to different contaminants and site conditions.