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mrLABORATORIES, INC. <br /> Lawrence&Associates Project: Neenah Paper Co. Reported: 02/12/2008 15:28 <br /> 2001 Market Street, Room 523 Project Number: 005194.02 Task 1 <br /> Redding, CA 96001 Project Manager: David Kirk <br /> Water Analysis (General Chemistry) <br /> Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent <br /> Constituent Batch ID QC Sample T e Sample ID Result Result Added Units RPD Recove RPD Recove Lab Quals <br /> Chloride BRA1716 Duplicate 0801292-15 149.32 149.43 mg/L 0.1 10 <br /> Matrix Spike 0801292-15 149.32 252.39 101.01 mg/L - 102 80-120 <br /> Matrix Spike Duplicate 0801292-15 149.32 252.94 101.01 mg/L 1.0 103 10 80-120 <br /> Nitrate as NO3 BRA1716 Duplicate 0801292-15 ND ND mg/L 10 <br /> Matrix Spike 0801292-15 ND 23.028 22.358 mg/L 103 80-120 <br /> Matrix Spike Duplicate 0801292-15 ND 22.966 22.358 mg/L 0 103 10 80-120 <br /> Sulfate BRA1716 Duplicate 0801292-15 102.52 102.42 mg/L 01 10 <br /> Matrix Spike 0801292-15 102.52 205.41 101.01 mg/L 102 80-120 <br /> Matrix Spike Duplicate 0801292-15 102.52 205.96 101.01 mg/L 0 102 10 80-120 <br /> Chloride BRA1717 Duplicate 0801292-20 88.115 87.941 mg/L 0.2 10 <br /> Matrix Spike 0801292-20 88.115 194.81 101.01 mg/L 106 80-120 <br /> Matrix Spike Duplicate 0801292-20 88.115 194.72 101.01 mg/L 0 106 10 80-120 <br /> Nitrate as NO3 - -- - - --- - <br /> BRA1717 Duplicate 0801292-20 6.0337 6.1134 mg/L 1.3 10 <br /> Matrix Spike 0801292-20 6.0337 28.671 22.358 mg/L 101 80-120 <br /> Matrix Spike Duplicate 0801292-20 6.0337 28.005 22.358 mg/L 2.7 98.3 10 80-120 <br /> Sulfate 8RA1717 Duplicate 0801292-20 63.398 63.484 mg/L 0.1 10 <br /> Matrix Spike 0801292-20 63.398 166.78 101.01 mg/L 102 80-120 <br /> Matrix Spike Duplicate 0801292-20 63.398 166.64 101.01 mg/L 0 102 10 80-120 <br /> Chloride BRA1718 Duplicate 0801292-24 14.743 14.745 mg/L 0.0 10 <br /> Matrix Spike 0801292-24 14.743 121.06 101.01 mg/L 105 80-120 <br /> Matrix Spike Duplicate 0801292-24 14.743 120.96 101.01 mg/L 0 105 10 80- 120 <br /> Nitrate as NO3 BRA1718 Duplicate 0801292-24 58.673 58.726 mg/L 0.1 10 <br /> Matrix Spike 0801292-24 58.673 79.785 22.358 mg/L 94.4 80-120 <br /> Matrix Spike Duplicate 0801292-24 58.673 79.866 22.358 mg/L 0.4 94.8 10 80-120 <br /> Sulfate BRA1718 Duplicate 0801292-24 38.527 38.263 mg/L 0.7 10 <br /> Matrix Spike 0801292-24 38.527 140.86 101.01 mg/L 101 80-120 <br /> Matrix Spike Duplicate 0801292-24 _ 38.527 140.96 101.01 mg/L 0 101 10 80-120 <br /> BC Laboratories The results in this report apply to the samples analyzed in accordance ivith the chain of custody document. This,analytical report must he reproduced in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting party.BC laboratories,Inc.assumes no responsibility for report alienation,separation, detachment or third party interpretation. page 30 of 34 <br /> 4100 Atlas Court•Bakersfield,CA 93308•(661)327-4911 •FAX(661)327-1918•www.bclabs.com <br />