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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: 197827 <br />Page 2 of 2 <br />Parmname NOM Sample Qual QC Units RPD% REC% Range AnIst Date Time <br />N/A indicates that spike recovery limits do not apply when sample concentration exceeds spike conc. 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 resulL <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 36 of 36 <br />