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Laboratories Inc. , <br /> Environmental Testing Laboratory Since 1949 <br /> Lawrence&Associates Project: Neenah Paper Co. Reported: 04/20/2010 8:29 <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 /> Chloride BTD0472 Duplicate 1004645-20 51.452 51.245 mg/L 0.4 10 <br /> Matrix Spike 1004645-20 51.452 162.36 101.01 mg/L 110 80-120 <br /> Matrix Spike Duplicate 1004645-20 51.452 163.11 101.01 mg/L 0.7 111 10 80-120 <br /> Nitrate as N BTD0472 Duplicate 1004645-20 0.33500 0.31600 mg/L 5.8 10 <br /> Matrix Spike 1004645-20 0.33500 5.4596 5.0505 mg/L 101 80-120 <br /> Matrix Spike Duplicate 1004645-20 0.33500 5.4030 5.0505 mg/L 1.1 100 10 80-120 <br /> Sulfate BTD0472 Duplicate 1004645-20 27.833 27.613 mg/L 0.8 10 <br /> Matrix Spike 1004645-20 27.833 134.04 101.01 mg/L 105 80-120 <br /> Matrix Spike Duplicate 1004645-20 27.833 134.76 101.01 mg/L 0.7 106 10 80-120 <br /> Chloride BTD0473 Duplicate 1004645-28RE1 138.85 139.26 mg/L 0.3 10 <br /> Matrix Spike 1004645-28RE1 138.85 708.84 505.05 mg/L 113 80-120 <br /> Matrix Spike Duplicate 1004645-28RE1 138.85 707.45 505.05 mg/L 0.2 113 10 80-120 <br /> Nitrate as N BTD0473 Duplicate 1004645-28RE1 49.305 49.725 mg/L 0.8 10 <br /> Matrix Spike 1004645-28RE1 49.305 76.010 25.253 mg/L 106 80-120 <br /> Matrix Spike Duplicate 1004645-28RE1 49.305 75.561 25.253 mg/L 1.7 104 10 80-120 <br /> Sulfate BTD0473 Duplicate 1004645-28RE1 74.660 74.310 mg/L 0.5 10 <br /> Matrix Spike 1004645-28RE1 74.660 609.26 505.05 mg/L 106 80-120 <br /> Matrix Spike Duplicate 1004645-28RE1 74.660 610.10 505.05 mg/L 0.2 106 10 80-120 <br /> Total Dissolved Solids @ 180 C BTDO561 Duplicate 1004645-01 965.00 960.00 mg/L 0.5 10 <br /> Total Dissolved Solids @ 180 C BTDO562 Duplicate 1004645-11 925.00 940.00 mg/L 1.6 10 <br /> Total Dissolved Solids @ 180 C BTD0603 Duplicate 1004645-21 830.00 825.00 mg/L 0.6 10 <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 41 of 44 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />