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® Laboratories disc. I �, ® Environmental Testing Laboratory Since 1949 CB&I Reported: 02/12/2014 10:57 180 Promenade Circle,Suite 320 Project: North County LF,SJ County Sacramento,CA 95834 Project Number: Annual 149270 Project Manager: Sheila Richgels Water Analysis (General Chemistry) Quality Control Report - Precision & Accuracy Control Limits Source Source Spike Percent Percent Lab Cqnstituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals QC Batch ID: BXA1925 Used client sample: N Total Dissolved Solids @ 180 C DUP 1401941-01 3380.0 3400.0 mg/L 0.6 10 QC Batch ID: BXA1943 Used client sample: Y-Description: G-1,01/28/2014 09:42 Chloride DUP 1402120-01 8.2360 8.2720 mg/L 0.4 10 MS 1402120-01 8.2360 64.846 50.505 mg/L 112 80-120 MSD 1402120-01 8.2360 64.822 50.505 mg/L 0.0 112 10 80-120 Nitrate as N DUP 1402120-01 1.3930 1.3800 mg/L 0.9 10 MS 1402120-01 1.3930 6.9333 5.0505 mg/L 110 80-120 MSD 1402120-01 1.3930 6.9040 5.0505 mg/L 0.4 109 10 80-120 Sulfate DUP 1402120-01 3.9890 4.0170 mg/L 0.7 10 MS 1402120-01 3.9890 115.26 101.01 mg/L 110 80-120 MSD 1402120-01 3.9890 115.19 101.01 mg/L 0.1 110 10 80-120 QC Batch ID: BXA1969 Used client sample: Y-Description: G-1, 01/28/2014 09:42 Bicarbonate DUP 1402120-01 133.00 134.11 mg/L 0.8 10 Total Alkalinity as CaCO3 DUP 1402120-01 109.08 109.99 mg/L 0.8 10 QC Batch ID: BXA2027 Used client sample: N Total Calcium DUP 1402042-01 8.5989 8.4811 mg/L 1.4 20 MS 1402042-01 8.5989 17.414 10.000 mg/L 88.1 75-125 MSD 1402042-01 8.5989 17.839 10.000 mg/L 2.4 92.4 20 75-125 Total Magnesium DUP 1402042-01 6.1070 5.9829 mg/L 2.1 20 MS 1402042-01 6.1070 14.855 10.000 mg/L 87.5 75-125 MSD 1402042-01 6.1070 15.570 10.000 mg/L 4.7 94.6 20 75-125 QC Batch ID: BXA2092 Used client sample: N Chemical Oxygen Demand DUP 1402175-01 262.42 260.22 mg 02/L 0.8 20 MS 1402175-01 262.42 933.71 750.00 mg 02/L 89.5 80-120 MSD 1402175-01 262.42 933.71 750.00 mg 02/L 0 89.5 20 80-120 QC Batch ID: BXB0008 Used client sample: Y-Description: G-1, 01/28/2014 09:42 Dissolved Calcium DUP 1402120-01 18.976 19.141 mg/L 0.9 20 MS 1402120-01 18.976 29.012 10.204 mg/L 98.4 75-125 MSD 1402120-01 18.976 29.034 10.204 mg/L 0.1 98.6 20 75-125 Dissolved Magnesium DUP 1402120-01 10.217 9.9558 mg/L 2.6 20 MS 1402120-01 10.217 20.626 10.204 mg/L 102 75-125 MSD 1402120-01 10.217 20.246 10.204 mg/L 1.9 98.3 20 75-125 Dissolved Sodium DUP 1402120-01 17.372 17.554 mg/L 1.0 20 MS 1402120-01 17.372 27.258 10.204 mg/L 96.9 75-125 MSD 1402120-01 17.372 27.318 10.204 mg/L 0.2 97.5 20 75-125 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 third party interpretation. 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 41 of 43