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KIFF <br /> Report Number : 85552 <br /> Analytical LLC Date : 08/05/2013 <br /> Subject : 7 Water Samples and 4 Vapor Samples <br /> Project Name : Parcel 2A <br /> Project Number : 211602385.600.0800 <br /> Case Narrative <br /> A version of this report was previously issued on 08/01/2013. This revised version replaces that report. <br /> The results for sample GW-EFF by method EPA 624 been reported from an alternate analytical run to <br /> resolve a QC conflict between methods EPA 624 and EPA 8260B. <br /> Matrix Spike/Matrix Spike Duplicate results associated with sample GW-EFF for the analyte Lead were <br /> outside of control limits. This may indicate a bias for the sample that was spiked. Since the LCS <br /> recoveries were within control limits, no data are flagged. <br /> The analyte 2-Chloroethylvinylether for sample GW-EFF was analyzed using a preserved bottle. <br /> 2-Chloroethylvinylether degrades rapidly in the presence of the hydrochloric acid (HCI) preservative, so <br /> results may be biased low. <br /> Matrix Spike/Matrix Spike Duplicate results associated with sample GW-EFF for the analyte <br /> 2-Chloroethylvinylether were outside of control limits. This may indicate a bias for the sample that was <br /> spiked. Since the LCS recoveries were within control limits, no data are flagged. <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 Page 2 of 32 <br />