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MCC�I>rlpbell Analytical, yncs 1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />U l 1 1 Web: www.mccampbcll.com E-mail: main@mccampbell.com <br />IWWW "WhenOualitvCounts" I Tete hone:877-252-9262 Fax: 925-252-9269 <br />Test Method: pH <br />Matrix: W <br />WorkOrder: 0812109 <br />Method Name: <br />SM4500H+B <br />Units t, pH units @ °C <br />BatchlD: 40006 <br />Lab ID <br />Sample <br />DF Dup / Ser. Dil. <br />DF <br />Precision <br />Acceptance Criteria <br />0812109-OOIF <br />7.73 @ 20.6°C <br />1 7.72 @ 20.6°C 1 <br />0.01 0.02 <br />Lab ID <br />Date Sampled Date Extracted <br />BATCH 40006 SUMMARY <br />Date Analyzed Lab ID <br />Date Sampled Date Extracted Date Analyzed <br />0812109-001 F <br />12/02/08 3:15 PM 12/03/08 <br />12/03/08 8:21 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 />DHS ELAP Certification 1644 QA/QC Officer <br />