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Laboratories Inc. I <br /> Environmental Testing Laboratory Since 1949 <br /> aw Reported: 06/05/2012 12:06 <br /> 80 Promenade Circle,Suite 320 Project: Corral Hollow LF,SJ County <br /> Sacramento,CA 95834 Project Number: 139881 <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: BVE1677 Used client sample: Y-Description: MW-4, 05/21/2012 10:36 <br /> Total Dissolved Solids @ 180 C DUP 120928401 1240.0 1225.0 mg/L 1.2 10 <br /> QC Batch ID: BVE1691 Used client sample: Y-Description: MW-4, 05/21/2012 10:36 <br /> Chloride DUP 120928401 114.14 117.10 mg/L 2.6 10 <br /> MS 1209284-01 114.14 225.15 101.01 mg/L 110 80-120 <br /> MSD 1209284-01 114.14 225.27 101.01 mg/L 0.1 110 10 80-120 <br /> Nitrate as N DUP 1209284-01 10.322 10.640 mg/L 3.0 10 <br /> MS 1209284-01 10.322 20.952 10.101 mg/L 105 80-120 <br /> MSD 1209284-01 10.322 20.978 10.101 mg/L 0.1 105 10 80-120 <br /> Sulfate DUP 1209284-01 402.32 414.33 mg/L 2.9 10 <br /> MS 120928401 402.32 620.49 202.02 mg/L 108 80-120 <br /> MSD 1209284-01 402.32 621.32 202.02 mg/L 0.1 108 10 80-120 <br /> QC Batch ID: BVE1710 Used client sample: N <br /> rbonate DUP 120927402 232.24 231.68 mg/L 0.2 10 <br /> Carbonate DUP 120927402 ND ND mg/L 10 <br /> Total Alkalinity as CaCO3 DUP 120927402 193.51 193.66 mg/L 0.1 10 <br /> QC Batch ID: BVE1711 Used client sample: N <br /> Bicarbonate DUP 1209289-04 602.85 606.56 mg/L 0.6 10 <br /> Carbonate DUP 1209289-04 ND ND mg/L 10 <br /> Total Alkalinity as CaCO3 DUP 1209289-04 494.43 497.47 mg/L 0.6 10 <br /> I* <br /> 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. <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 <br /> nterpretation4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 44 of 45 <br />