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Laboratories Inc. . Environmental Testing Laboratory Since 1949 haw Reported: 02/18/2013 14:19 180 Promenade Circle,Suite 320 Project: Harney Lane,S.J.County Sacramento,CA 95834 Project Number. 139866-Annual Project Manager: Sheila Richgels Water Analysis (General Chemistry) Quality Control Report - Precision & Accuracy Control Limits Source Source Spike Percent Percent Lab Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals QC Batch ID: BWB0119 Used client sample: N Total Dissolved Solids @ 180 C DUP 1302211-01 366.66 363.33 mg/L 0.9 10 QC Batch ID: BWB0135 Used client sample: Y-Description: MW-1, 02/01/2013 12:16 Chloride DUP 1302261-01 8.4090 8.2160 mg/L 2.3 10 MS 1302261-01 8.4090 62.911 50.505 mg/L 108 80-120 MSD 1302261-01 8.4090 62.909 50.505 mg/L 0.0 108 10 80-120 Nitrate as N DUP 1302261-01 2.5070 2.4840 mg/L 0.9 10 MS 1302261-01 2.5070 8.0000 5.0505 mg/L 109 80-120 MSD 1302261-01 2.5070 8.0051 5.0505 mg/L 0.1 109 10 80-120 Sulfate DUP 1302261-01 7.3560 7.3180 mg/L 0.5 10 MS 1302261-01 7.3560 114.85 101.01 mg/L 106 80-120 MSD 1302261-01 7.3560 114.99 101.01 mg/L 0.1 107 10 80-120 QC Batch ID: BWBO166 Used client sample: Y-Description: MW-1, 02/01/2013 12:16 solved Calcium DUP 1302261-01 18.767 18.855 mg/L 0.5 20 MS 1302261-01 18.767 29.054 10.204 mg/L 101 75-125 MSD 1302261-01 18.767 28.822 10.204 mg/L 0.8 98.5 20 75-125 Dissolved Magnesium DUP 1302261-01 10.051 10.117 mg/L 0.7 20 MS 1302261-01 10.051 19.772 10.204 mg/L 95.3 75-125 MSD 1302261-01 10.051 20.056 10.204 mg/L 1.4 98.0 20 75-125 Dissolved Sodium DUP 1302261-01 27.014 27.172 mg/L 0.6 20 MS 1302261-01 27.014 36.890 10.204 mg/L 96.8 75-125 MSD 1302261-01 27.014 36.782 10.204 mg/L 0.3 95.7 20 75-125 Dissolved Potassium DUP 1302261-01 2.1201 2.1386 mg/L 0.9 20 MS 1302261-01 2.1201 12.056 10.204 mg/L 97.4 75-125 MSD 1302261-01 2.1201 12.064 10.204 mg/L 0.1 97.5 20 75-125 QC Batch ID: BWBO170 Used client sample: N Bicarbonate DUP 130225401 132.62 132.82 mg/L 0.1 10 Total Alkalinity as CaCO3 DUP 130225401 108.77 108.93 mg/L 0.1 10 QC Batch ID: BWBO472 Used client sample: Y-Description: L-01, 02/04/2013 08:58 Total Calcium DUP 1302491-01 208.19 208.73 mg/L 0.3 20 MS 1302491-01 208.19 216.24 10.000 mg/L 80.5 75-125 MSD 1302491-01 208.19 214.09 10.000 mg/L 1.0 59.0 20 75-125 A03 Total Magnesium DUP 1302491-01 96.754 97.118 mg/L 0.4 20 MS 1302491-01 96.754 106.04 10.000 mg/L 92.9 75-125 MSD 1302491-01 96.754 105.40 10.000 mg/L 0.6 86.4 20 75-125 QC Batch ID: BWB0647 Used client sample: N 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. 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 tbird party interpretation. 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bciabs.com Page 47 of 49