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MCCamubell Analytical, Inc. 1534 Willow Pass Road,Pituburg,CA 94565-1701 <br /> Wcb:www.mccampbell.com E-mail:mainytimccampbell.com <br /> "When Duality Counts" Telephone:977-252-9262 Fax:925-252-9269 <br /> QC SUMMARY REPORT FOR WET CHEMISTRY TESTS <br /> Test Method: pH Matrix: L workOrder: 0809678 <br /> Method Name. SW9045D Units t,pH units @-C BatchlD38580 <br /> Lab ID Sample DF Dup/Ser.oil. DF Precision Acceptance Criteria <br /> 0809678-OOIA 5.54 @23.5°C 1 5.55 @23.5°C 1 0.01 0.05 <br /> BATCH 38580 SUMMARY <br /> Lab ID Date Sampled Date Extracted Date Analyzed Lab ID Date Sampled Date Extracted Date Analyzed <br /> 0809678-001A )9/19/08 10:30 AM 09/29/08 09/29/08 8:30 PM <br /> Dup=Duplicate;Ser.Dil.=Serial Dilution;MS=Matrix Spike;RD=Relative Difference;RPD=Relative Percent Deviation. <br /> Precision=Absolute Value(Sample-Duplicate) <br /> RPD=100-(Sample-Duplicate)/[(Sample+Duplicate)/21 <br /> %RPD Is calculated using results of up to 10 significant figures,however the reported results are rounded to 2 or 3 significant figures.Therefore there may be a slight <br /> discrepancy between the%RPD displayed above and%RPD calculated using the reported results.MAI considers%RPD based upon more significant figures to be more <br /> accurate. <br /> DHS ELAP Certification 1644 JJ2— QA/QC Officer <br />