GOODSamples outlines the scientific and systematic approach to ensure that analytical data generated as a result of a sampling process is representative of the decision unit and is defensible. GOOD Test Portions is a supplement and companion document to GOODSamples for laboratory sampling processes. 

TitleLinkFile Type
GOODSamples Brochurepdf
GOODSamples Guidance on Obtaining Defensible Samples Manualpdf
GOOD Test Portions Guidance on Obtaining Defensible Test Portionspdf
GOOD Test Portions Guidance on Obtaining Defensible Test Portions (French)pdf