Laserfiche WebLink
this PQL check fails the blank and associated sample results must be reported as <br />`estimated' per Chapter 62-160, F A.C. unless the affected results are at least 10 <br />times the absolute value of the observed bias of the PQL check. <br />(v) If a continuing calibration verification fails, samples not chronologically bracketed <br />by acceptable calibration verifications must be reanalyzed or appropriately qualified. <br />d. Sample results below the Contract -specified PQL and above the highest calibration <br />standard shall be appropriately qualified. <br />8. Quality Control Blanks <br />a. If a Contracted analyte is detected in any analytical QC blank, the sample results that <br />are associated with the blank must be reported with the appropnate qualifier from <br />Chapter 62-160, F.A C., unless the affected sample concentrations are at least 10 times <br />higher than the calculated QC blank concentration. <br />b. Sample results must be chronologically bracketed with acceptable beginning and ending <br />analytical QC blanks. <br />c. If a Contracted analyte is detected in the field blank, equipment blank or trip blank, the <br />result must be confirmed by reanalyzing a new aliquot of the blank unless the sample <br />concentration results associated with the blank are at least 10 times the calculated blank <br />concentration. The laboratory must investigate the blank contamination to determine <br />that positive blank results are not due to a laboratory error and report the affected <br />samples and field -generated blank results with appropriate qualifiers and/or comments. <br />9. If any quality control measure or calibration verification fails (including those specified <br />above) samples that are associated with the failure must be reanalyzed, if possible. <br />Sample data that are associated with a failed quality control measure or calibration must be <br />appropriately qualified as specified in Chapter 62-160, F.A.C. An explanatory comment <br />must be attached to the final report for each result that has a qualifier code other than U, I, <br />or A. Any additional qualifier codes used but not explicitly listed in Chapter 62-160, F.A.C. <br />must be identified and defined in the report. <br />10. The reported MDL and PQL for each sample must be adjusted for dilution factors and any <br />relevant preparation weights and volumes. <br />11. Field QC duplicates or replicates - The CONTRACTOR shall ensure that field duplicates (not <br />to be confused with laboratory duplicates) are analyzed. All field duplicate results greater <br />than the contracted PQL should agree within 20% RPD for each measured analyte. In the <br />event that field duplicate agreement is not observed, the laboratory must investigate <br />sufficiently to determine that poor precision is not due to a laboratory error and report the <br />results with appropriate qualifiers and/or comments. <br />12. For all organic analyses using either gas chromatography or HPLC, analytes with <br />concentrations above the method detection limit shall be confirmed by at least one of the <br />qualitative identification measures listed below. Confirmation must occur the first time an <br />analyte is detected at a sampling point. <br />► Second column/same detector <br />► Second column/alternate detector <br />► Same column/alternate detector <br />► Mass spectrometry <br />► Alternate wavelength <br />DEP Agreement No. LP###, Attachment 1-1, Page 11 of 12 <br />