Data qualifiers and descriptions Result Qualifier Result Qualifier Description B Detection in field and/or trip blank D Reporting limit (RL) increased due to sample matrix interference (sample dilution) H EPA Holding Time Exceeded J Estimated: The analyte was positively identified and the associated numerical value is the approximate concentration of the analyte in the sample. R Rejected: The sample results are unusable due to the quality of the data generated because certain criteria were not met. The analyte may or may not be present in the sample. U Not Detected: The analyte was analyzed for, but was not detected at a level greater than or equal to the level of the adjusted Contract Required Quantitation Limit (CRQL) for sample and method. UJ Not Detected/Estimated: The analyte was not detected at a level greater than or equal to the adjusted CRQL or the reported adjusted CRQL is approximate and may be inaccurate or imprecise. Example QAQC matrix Below is an example of a matrix for use in addressing whether all data quality criteria are met for each analyte for each batch of samples. This table can be created using the thresholds from tables 7 and 8 in this SAP. QC numbers from the lab and calculated from the field are filled in, and compared to thresholds to perform QC checks.
Data qualifiers and descriptions Result Qualifier Result Qualifier Description B Detection in field and/or trip blank D Reporting limit (RL) increased due to sample matrix interference (sample dilution) H EPA Holding Time Exceeded J Estimated: The analyte was positively identified and the associated numerical value is the approximate concentration of the analyte in the sample. R Rejected: The sample results are unusable due to the quality of the data generated because certain criteria were not met. The analyte may or may not be present in the sample. U Not Detected: The analyte was analyzed for, but was not detected at a level greater than or equal to the level of the adjusted Contract Required Quantitation Limit (CRQL) for sample and method. UJ Not Detected/Estimated: The analyte was not detected at a level greater than or equal to the adjusted CRQL or the reported adjusted CRQL is approximate and may be inaccurate or imprecise. Example QAQC matrix Below is an example of a matrix for use in addressing whether all data quality criteria are met for each analyte for each batch of samples. This table can be created using the thresholds from tables 7 and 8 in this SAP. QC numbers from the lab and calculated from the field are filled in, and compared to thresholds to perform QC checks.
2015_4_27_MST%20SAP.docx