||Addendum to the Method 1668A Interlaboratory Validation Study Report, March 2010.
||Environmental Protection Agency, Washington, DC. Office of Water.
Chlorinated aromatic hydrocarbons ;
Water pollution sampling ;
Soil sampling ;
Test methods ;
Chemical analysis ;
Quality control ;
Statistical data ;
EPA method 1668A
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||This addendum to the Method 1668A Interlaboratory Validation Study Report (dated November 2008) revises Table 4-1, Congener Detection Rates and Concentrations in Study Samples (by Matrix and Level of Chlorination), and revises the section on quality control (QC) acceptance criteria in the report, including revision of the QC acceptance criteria in Table 5-1 of the report. The criteria were reassessed in response to laboratory feedback that some of the criteria in the report were unrealistically restrictive, and were revised based on an assessment of recently submitted data. The revised QC acceptance criteria in this addendum were developed based on the combination of a statistical analysis and a holistic view of the data.
||See also PB2010-115363, Full Report.
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||68C; 68D; 99A
||PC A01/MF A01