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2020-10-27 (ISM-1-Clarifications) An updated ITRC guidance (ISM-2) was developed and posted in the fall of 2020. The ISM-2 Update Team clarified inappropriate or inconsistent information in ISM-1 is as seen in the attached statement. Please review this document before downloading the ISM-1 PDF. ...

2020-10-27 (ISM-2) This updated Incremental Sampling Methodology (ISM-2) web-based document builds upon the 2012 version (ISM-1) and reflects advancements in technology in the ensuing eight years. ISM-type investigation methods have evolved, and regulators have gained more experience in the application ...

2020-01-22 (ISM-1-2012-with-Clarifications) ISM is increasingly being used in the environmental field for sampling contaminants in soil. Proponents have found that the sampling density afforded by collecting many increments, together with the disciplined processing and subsampling of the combined increments, ...