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Laboratories Inc. I . <br /> Environmental Testing Laboratory Since 1949 <br /> VV Reported: 01/25/2012 15:04 <br /> Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> Sacramento,CA 95834 Project Number. 139874 <br /> Project Manager: Sheila Richgels <br /> Water Analysis (General Chemistry) <br /> Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals <br /> QC Batch ID: BVA0560 Used client sample: N <br /> Chloride DUP 1200575-02 57.746 57.715 mg/L 0.1 10 <br /> MS 1200575-02 57.746 110.79 50.505 mg/L 105 80-120 <br /> MSD 1200575-02 57.746 110.96 50.505 mg/L 0.2 105 10 80-120 <br /> Nitrate as N DUP 1200575-02 7.1270 7.1400 mg/L 0.2 10 <br /> MS 1200575-02 7.1270 12.317 5.0505 mg/L 103 80-120 <br /> MSD 1200575-02 7.1270 12.325 5.0505 mg/L 0.1 103 10 80-120 <br /> Sulfate DUP 1200575-02 2.2690 2.2750 mg/L 0.3 10 <br /> MS 1200575-02 2.2690 103.44 101.01 mg/L 100 80-120 <br /> MSD 1200575-02 2.2690 103.58 101.01 mg/L 0.1 100 10 80-120 <br /> QC Batch ID: BVA0622 Used client sample: N <br /> Bicarbonate DUP 1200553-06 378.77 380.63 mg/L 0.5 10 <br /> Total Alkalinity as CaCO3 DUP 1200553-06 310.65 312.18 mg/L 0.5 10 <br /> C Batch ID: BVAO705 Used client sample: Y-Description: G-1,01/09/2012 12:16 <br /> Total Dissolved Solids @ 180 C DUP 1200583-01 463.33 453.33 mg/L 2.2 10 <br /> QC Batch ID: BVA0760 Used client sample: N <br /> Dissolved Calcium DUP 1200536-01 18.190 18.131 mg/L 0.3 20 <br /> MS 1200536-01 18.190 28.937 10.204 mg/L 105 75-125 <br /> MSD 1200536-01 18.190 29.088 10.204 mg/L 0.5 107 20 75-125 <br /> Dissolved Magnesium DUP 1200536-01 6.2495 6.2427 mg/L 0.1 20 <br /> MS 1200536-01 6.2495 16.762 10.204 mg/L 103 75-125 <br /> MSD 1200536-01 6.2495 16.878 10.204 mg/L 0.7 104 20 75-125 <br /> Dissolved Sodium DUP 1200536-01 803.31 799.77 mg/L 0.4 20 <br /> MS 1200536-01 803.31 816.20 10.204 mg/L 126 75-125 A03 <br /> MSD 1200536-01 803.31 805.84 10.204 mg/L 1.3 24.8 20 75-125 A03 <br /> Dissolved Potassium DUP 1200536-01 190.54 191.52 mg/L 0.5 20 <br /> MS 1200536-01 190.54 203.03 10.204 mg/L 122 75-125 <br /> MSD 1200536-01 190.54 201.37 10.204 mg/L 0.8 106 20 75-125 <br /> QC Batch ID: BVA0907 Used client sample: N <br /> Chemical Oxygen Demand DUP 1200674-02 211.51 215.76 mg O/L 2.0 20 <br /> MS 1200674-02 211.51 916.60 750.00 mg O/L 94.0 80-120 <br /> MSD 1200674-02 211.51 942.09 750.00 mg O/L 2.7 97.4 20 80-120 <br /> QC Batch ID: BVA1496 Used client sample: Y-Description: MW-4,01/23/2012 11:19 <br /> Dissolved Calcium DUP 1201253-01 149.48 148.80 mg/L 0.5 20 <br /> MS 1201253-01 149.48 157.47 10.204 mg/L 78.3 75-125 <br /> MSD 1201253-01 149.48 157.38 10.204 mg/L 0.1 77.5 20 75-125 <br /> 0 <br /> The results in this report apply to the samples analyzed in accordance with the chain ojcustody 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.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 38 of 40 <br />