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McCamubell Analytical., Inc. :5 .nxxaunpbsll.cmn PE-mair8,CA 94565-1701 <br /> Web:www.mccampbell cora E-mail:rsain@nccatnpbell.com <br /> "When Ouality Counts" Tcle hone:877-252-9262 Fax:925-252-9269 <br /> QC SUMMARY REPORT FOR WET CHENUSTRY TESTS <br /> Test Method: pH Matrix: L WorkOrder: 0809678 <br /> Method Name: SW9045D Units t,pH units @°C BalchlD: 38580 <br /> PLab ID Sample DF Cup/Ser.Cil. 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 Dale Extracted Date Analyzed <br /> 0809678-OOIA )9/19/08 10:30 AM 09/29/08 09/29/08 8:30 PM <br /> Cup=Duplicate;Ser.Dil.=Serial Dilution;MS=Matrix Spike;RD=Relative Difference;RPD=Relative Percent Deviation. <br /> Precision=Absolute Value(Sample-Duplicate) <br /> RPD=t0o`(Sample-Duplicate)/[(Sample-Duplicate)/2] <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 ��v Y A2— QA/QC Officer <br />