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GEL LABORATORIES LLC <br /> 2040 Savage Road Charleston, SC 29407-(843)556-8171 -www.gel.com <br /> QC Summary <br /> Workorder: 344616 Page 8 of 8 <br /> Parmname NOM Sample Qual QC Units RPD/D% REC% Range Anlst Date Time <br /> E Metals--%difference of sample and SD is>10%. Sample concentration must meet flagging criteria <br /> F Estimated Value <br /> FB Mercury was found present at quantifiable concentrations in field blanks received with these samples. Data associated with the blank are deemed <br /> invalid for reporting to regulatory agencies <br /> H Analytical holding time was exceeded <br /> M Matrix Related Failure <br /> N Metals--The Matrix spike sample recovery is not within specified control limits <br /> N/A RPD or%Recovery limits do not apply. <br /> N1 See case narrative <br /> ND Analyte concentration is not detected above the detection limit <br /> NJ Consult Case Narrative,Data Summary package,or Project Manager concerning this qualifier <br /> Q One or more quality control criteria have not been met.Refer to the applicable narrative or DER. <br /> R Sample results are rejected <br /> U Analyte was analyzed for,but not detected above the CRDL. <br /> U Metals--Analyte was analyzed for,but not detected above the greater of either the MDL or the CRDL. <br /> X Consult Case Narrative,Data Summary package,or Project Manager concerning this qualifier <br /> Y QC Samples were not spiked with this compound <br /> RPD of sample and duplicate evaluated using+/-RL. Concentrations are<5X the RL. Qualifier Not Applicable for Radiochemistry. <br /> It Preparation or preservation holding time was exceeded <br /> N/A indicates that spike recovery limits do not apply when sample concentration exceeds spike cone.by a factor of 4 or more. <br /> The Relative Percent Difference(RPD)obtained from the sample duplicate (DUP)is evaluated against the acceptance criteria when the sample is greater than <br /> five times(5X)the contract required detection limit(RL).In cases where either the sample or duplicate value is less than 5X the RL,a control limit of+/-the <br /> RL is used to evaluate the DUP result. <br /> *Indicates that a Quality Control parameter was not within specifications. <br /> For PS,PSD,and SDILT results,the values listed are the measured amounts,not final concentrations. <br /> Where the analytical method has been performed under NELAP certification,the analysis has met all of the <br /> requirements of the NELAC standard unless qualified on the QC Summary. <br /> Page 38 of 94 <br />