The second edition of a bestseller, this book provides practical guidance on developing cost-effective and defensible environmental sampling programs to support site characterization, site remediation, and building decontamination and decommissioning. It features new methodologies for characterizing radioactive environments, statistical approaches for designing environmental investigations, and chemical characterization techniques. Up-to-date with the latest EPA guidelines, the text offers additional coverage of general media sampling, building material sampling, remote surveying, data verification and validation, and data quality assessment.