EPA periodically convenes technical workgroups of experts from EPA and other agencies to review and select the methods listed in Selected Analytical Methods for Environmental Remediation and Recovery (SAM). Use the Selected Methods links to view summaries of the chemical, radiochemical, pathogen and biotoxin methods selected by the SAM technical workgroups. When available, links to the full method documentation also are provided. Summaries of each methods also are provided through the SAM methods queries to describe method applications, procedures, instrumentation and capabilities, such as detection levels. See SAM Method Queries.