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LABORATORIES, INC. <br /> Lawrence&Associates Project: Fox River Paper <br /> 2001 Market Street,Room 523 Project Number: Fox River Paper 005194.00 Task 7 <br /> Redding CA,96001 Project Manager: David Kirk Reported: 11/01/06 14:33 <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 RecoytnL RPD Recovery Lab Quals <br /> Electrical Conductivity @ 25 C BPJ1038 Duplicate 0610861-08 1290.0 1280.0 umhos/cm 0.778 10 <br /> Electrical Conductivity @ 25 C BPJ1039 Duplicate 0610861-18 1190.0 1180.0 umhos/cm 0.844 10 <br /> pH _ BPJ1041 Duplicate 0610861-01 7.4230 7.4570 pH Units 0.457 20 <br /> pH BPJ1042 Duplicate 0610861-11 6.4310 6.4930 <br /> pH Units 0.959 20 <br /> pH BPJ1043 Duplicate 0610861-21 7.1030 7.1470 pH Units 0.618 20 <br /> Calcium BPJ1056 Duplicate 0610861-21 58.244 60.304 mg/L 3.47 20 <br /> Matrix Spike 0610861-21 58.244 70.723 10.204 mg/L 122 85-115 A03 <br /> Matrix Spike Duplicate 0610861-21 58.244 70.383 10.204 mg/L 2.76 119 20 85-115 A03 <br /> Magnesium BPJ1056 Duplicate 0610861-21 20.502 20.671 mg/L 0.821 20 <br /> Matrix Spike 0610861-21 20.502 30.905 10.204 mg/L 102 85- 115 <br /> Matrix Spike Duplicate 0610861-21 20.502 31.074 10.204 mg/L 1.61 104 20 85-115 <br /> Sodium BPJ1056 Duplicate 0610861-21 186.57 192.80 mg/L 3.28 20 <br /> Matrix Spike 0610861-21 186.57 200.71 10.204 mg/L 138 85-115 A03 <br /> Matrix Spike Duplicate 0610861-21 186.57 197.97 10.204 mg/L 21.5 112 20 85-115 A03,002 <br /> Potassium BPJ1056 Duplicate 0610861-21 0.75680 0.78766 mg/L 4.00 20 J <br /> Matrix Spike 0610861-21 0.75680 10.923 10.204 mg/L 99.6 85- 115 <br /> Matrix Spike Duplicate 0610861-21 0.75680 10.986 10.204 mg/L 0.621 100 20 85-115 <br /> Calcium BPJ1057 Duplicate 0610861-01 136.61 139.35 mg/L 1.98 20 <br /> Matrix Spike 0610861-01 136.61 144.53 10.204 mg/L 77.6 85-115 A03 <br /> Matrix Spike Duplicate 0610861-01 136.61 148.14 10.204 mg/L 37.1 113 20 85-115 A03,Q02 <br /> Magnesium BPJ1057 Duplicate 0610861-01 47.838 48.077 mg/L 0.497 20 <br /> Matrix Spike 0610861-01 47.838 56.135 10.204 mg/L 81.3 85-115 A03 <br /> Matrix Spike Duplicate 0610861-01 47.838 58.127 10.204 mg/L 21.4 101 20 85-115 A03,Q02 <br /> Sodium BPJ1057 Duplicate 0610861-01 195.97 199.00 mg/L 1.54 20 <br /> Matrix Spike 0610861-01 195.97 202.97 10.204 mg/L 68.6 85-115 A03 <br /> Matrix Spike Duplicate 0610861-01 195.97 208.01 10.204 mg/L 52.9 118 20 85-115 A03,Q02 <br /> BC Laboratories The results in this report apply to thesampllelyzed in accordance with the chain of custody document. This analytical report must be r oduced in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting party.BC labor nc.assumes no responsibility for report aberration,separation„detachment or third party interpretation <br /> 4100 Atlas Court•Bakersfield,CA 93308•(661)327-4911 •FAX(661)327-1918•www.belabs.com Page 30 0(37 <br />