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LABORATORIES, 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 QCSampleType Sam le ID Result Result Added Units RPD Recovery RPD Recovery Lab Quals <br /> Sodium BRA1812 Duplicate 0801228-08 29.528 30.006 mg/L 1.6 20 <br /> Matrix Spike 0801228-08 29.528 40.686 10.204 mg/L 109 85-115 <br /> Matrix Spike Duplicate 0801228-08 29.528 41.169 10.204 mg/L 4.5 114 20 85-115 <br /> Sodium BRA1814 Duplicate 0801289-01 25.091 24.618 mg/L 1.9 20 <br /> Matrix Spike 0801289-01 25.091 34.787 10.204 mg/L 95.0 85-115 <br /> Matrix Spike Duplicate 0801289-01 25.091 35.307 10.204 mg/L 5.1 100 20 85-115 <br /> Sodium BRA1815 Duplicate 0801292-05 177.12 179.72 mg/L 1.5 20 <br /> Matrix Spike 0801292-05 177.12 184.96 10.204 mg/L 76.8 85-115 A03 <br /> Matrix Spike Duplicate0801292-05 177.12 184.72 10.204 mg/L 3.0 74.5 20 85-115 A03 <br /> Sodium BRA1817 Duplicate 0801292-15 171.81 174.64 mg/L 1.6 20 <br /> Matrix Spike 0801292-15 171.81 183.08 10.204 mg/L 110 85-115 <br /> Matrix Spike Duplicate 0801292-15 171.81 184.97 10.204 mg/L 15.9 129 20 85-115 A03 <br /> pH BRA1818 Duplicate 0801294-01 8-1500 8.1640 pH Units 0.2 20 <br /> PH BRA1819 Duplicate 0801292-08 6.9250 6.9480 pH Units 0.3 20 <br /> pH BRA1820 Duplicate 0801292-18 7.7830 7.8290 pH Units 0.6 20 <br /> Electrical Conductivity @ 25 C BRA1821 Duplicate 0801294-01 3570.0 3560.0 umhos/cm 0.3 10 <br /> Electrical Conductivity @ 25 C BRA1824 Duplicate 0801292-07 1390.0 1380.0 umhos/cm 0.7 10 <br /> Electrical Conductivity @ 25 C BRA1828 Duplicate 0801292-17 187.00 185.00 umhos/cm 1.1 10 <br /> Total Dissolved Solids @ 180 C BRB0050 Duplicate 0801292-01 1050.0 1060.0 mg/L 0.9 10 <br /> Total Dissolved Solids @ 180 C BRB0051 Duplicate 0801292-11 1060.0 1050.0 mg/L 0.9 10 <br /> Total Dissolved Solids @ 180 C BRB0057 Duplicate 0801292-21 845.00 850.00 mg/L 0.6 10 <br /> BC Laboratories The results in this report apply to the samples analyzed in accordance with 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.HC Laboratories,Inc.assumes no responsibility far reportalteration,sepnralioo, detschment or third party interprcmtion. page 31 of 34 <br /> 4100 Atlas Court•Bakersfield,CA 93308•10327-4911 •FAX(661)327-1918•www.bclabs.com <br />