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Caporale, C., G. Dodo, K. Feddersen, B. Pepich, et al.
EPA 910-R-18-001, 47 pp, 2018

This document contains guidance to aid the data reviewer in determining the usability of analytical data generated for perfluoroalkyl substances. It is primarily based on EPA Method 537 and the general validation approach developed under EPA's Contract Laboratory Program. This guide is intended to be applicable to data gathered using EPA Method 537 for investigative purposes. Data users evaluating drinking water sample results or assessing potential human exposure relative to published drinking water health advisory levels should not qualify or use analytical result data that fail Method 537 quality control criteria. To make appropriate judgments, the reviewer needs a complete understanding of the intended use of the data and is strongly encouraged to establish a dialogue with the data user prior to and following the data review, to discuss usability issues and resolve questions regarding the review. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100VW12.txt

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