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Laboratories Inc. , <br /> Environmental Testing Laboratory Since 1949 <br /> Lawrence&Associates Project: Neenah Paper Co. Reported: 04/22/2010 10:28 <br /> 3590 Iron Court Project Number: 005194.04 T3 <br /> Shasta Lake City,CA 96019 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 Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Lab Quals <br /> pH BTDO526 Duplicate 1004653-01 7.5500 7.5500 pH Units 0 20 <br /> Electrical Conductivity @ 25 C BTDO526 Duplicate 1004653-01 2013.0 2035.0 umhos/cm 1.1 10 <br /> pH BTDO527 Duplicate 1004752-04 8.0200 8.0200 pH Units 0 20 <br /> Electrical Conductivity @ 25 C BTDO527 Duplicate 1004752-04 205.10 205.00 umhos/cm 0.0 10 <br /> Chloride BTD0541 Duplicate 1004751-01 176.84 178.27 mg/L 0.8 10 <br /> Matrix Spike 1004751-01 176.84 285.26 101.01 mg/L 107 80-120 <br /> Matrix Spike Duplicate 1004751-01 176.84 281.39 101.01 mg/L 3.6 104 10 80-120 <br /> Nitrate as N BTD0541 Duplicate 1004751-01 8.7670 8.7600 mg/L 0.1 10 <br /> Matrix Spike 1004751-01 8.7670 13.996 5.0505 mg/L 104 80-120 <br /> Matrix Spike Duplicate 1004751-01 8.7670 13.975 5.0505 mg/L 0.4 103 10 80-120 <br /> Sulfate BTD0541 Duplicate 1004751-01 227.73 225.46 mg/L 1.0 10 <br /> Matrix Spike 1004751-01 227.73 326.80 101.01 mg/L 98.1 80-120 <br /> Matrix Spike Duplicate 1004751-01 227.73 331.49 101.01 mg/L 4.6 103 10 80-120 <br /> Chloride BTDO542 Duplicate 1004752-01RE1 423.41 423.68 mg/L 0.1 10 <br /> Matrix Spike 1004752-01 RE1 423.41 634.55 202.02 mg/L 105 80-120 <br /> Matrix Spike Duplicate 1004752-01 RE1 423.41 636.16 202.02 mg/L 0.8 105 10 80-120 <br /> Nitrate as N BTD0542 Duplicate 1004752-01RE1 0.60400 0.57000 mg/L 5.8 10 <br /> Matrix Spike 1004752-01RE1 0.60400 11.345 10.101 mg/L 106 80-120 <br /> Matrix Spike Duplicate 1004752-01RE1 0.60400 11.372 10.101 mg/L 0.2 107 10 80-120 <br /> Sulfate BTD0542 Duplicate 1004752-01RE1 10.740 10.870 mg/L 1.2 10 <br /> Matrix Spike 1004752-01 RE1 10.740 223.64 202.02 mg/L 105 80-120 <br /> Matrix Spike Duplicate 1004752-01 RE1 10.740 222.64 202.02 mg/L 0.5 105 10 80-120 <br /> Sodium BTD0631 Duplicate 1004752-01 214.35 213.80 mg/L 0.3 20 <br /> Matrix Spike 1004752-01 214.35 227.98 10.204 mg/L 134 85-115 A03 <br /> Matrix Spike Duplicate 1004752-01 214.35 234.06 10.204 mg/L 36.5 193 20 85-115 A03,Q02 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be 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 alteration,separation,detachment or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 18 of 22 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />