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1 <br /> ' SOP TO-14A/15 <br /> Rev 4 <br /> December 2007 <br /> 15. unique laboratory project ID number <br /> 16. identification of flagged data(including data outside quantitation levels) <br /> 17. chain of custody(including sample dates and time) <br /> ' 18. cover letter(including signature and title page) <br /> 19. a brief description of the test method <br /> 20. narrative(if needed) <br /> 21. a description of any unusual or notable events or conclusions, including samples that did not <br /> 22. meet NELAC sample acceptance requirements(if applicable) <br /> ' Any analytical testing provided by a subcontractor will be reported by the subcontractor on their letterhead, <br /> separate from the H&P report. <br /> ' After the final laboratory report is issued,the report will remain unchanged. Any amendments to the report <br /> will be made as separate reports and will include a statement of amendment or supplement to the original <br /> report. H&P will notify the client promptly in writing of any defective measuring or validity problems with <br /> data. <br /> H&P takes the necessary steps to ensure the confidentiality of its report, by providing data only to the client <br /> ' by phone, fax, e-mail or mail. <br /> H&P shall certify that the test results meet all the requirements of the applicable regulatory laws (e.g., <br /> ' ELAP,NELAC, etc.) or shall provide a reasonable explanation as to why they do not. <br /> 16.0 Quality Assurance and Quality Control <br /> ' Quality Assurance (QA)and Quality Control (QC)are a set of procedures and conditions designed to <br /> maximize the precision and accuracy of the analytical process. The procedures are also designed to <br /> t maximize the precision and accuracy of the analytical process. QA/QC is a continuous process requiring <br /> verification by inspection and, if necessary, appropriate corrective action. Listed below are key items used to <br /> ensure proper QA/QC. A brief description of each term is included, along with H&P and regulatory <br /> ' requirements. <br /> ' Initial Calibration <br /> Continuing Calibration <br /> Detection Limits <br /> ' Minimum detection limit(MDL) <br /> Estimated Quantitation Limit(EQL) <br /> Reporting Limit <br /> ' Blanks <br /> Percent Recovery Calculation <br /> Percent Relative Difference <br /> ' Laboratory Control Limits <br /> Sample Run Logs <br /> Chain-of-custody <br /> ' Page 19 of 24 <br />