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Laboratories Inc. <br />Environmental Testing Laboratory Since 1949 <br />Shaw Reported: 01/31/2012 16:25 <br />180 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: BVA1496 <br />Used client sample: Y - Description: MW -4, 01/23/2012 11:19 <br />Dissolved Calcium <br />DUP 1201253-01 <br />149.48 <br />148.80 <br />mg/L <br />0.5 <br />20 <br />MS 1201253-01 <br />149.48 <br />157.47 <br />10.204 mg/L <br />78.3 <br />75-125 <br />MSD 1201253-01 <br />149.48 <br />157.38 <br />10.204 mg/L <br />0.1 <br />77.5 <br />20 <br />75-125 <br />Dissolved Magnesium <br />DUP 1201253-01 <br />57.135 <br />56.856 <br />mg/L <br />0.5 <br />20 <br />MS 1201253-01 <br />57.135 <br />67.118 <br />10.204 mg/L <br />97.8 <br />75-125 <br />MSD 1201253-01 <br />57.135 <br />67.244 <br />10.204 mg/L <br />0.2 <br />99.1 <br />20 <br />75-125 <br />Dissolved Sodium <br />DUP 1201253-01 <br />164.20 <br />164.23 <br />mg/L <br />0.0 <br />20 <br />MS 1201253-01 <br />164.20 <br />171.72 <br />10.204 mg/L <br />73.7 <br />75-125 A03 <br />MSD 1201253-01 <br />164.20 <br />168.19 <br />10.204 mg/L <br />2.1 <br />39.1 <br />20 <br />75-125 A03 <br />Dissolved Potassium <br />DUP 1201253-01 <br />5.5452 <br />5.5000 <br />mg/L <br />0.8 <br />20 <br />MS 1201253-01 <br />5.5452 <br />15.741 <br />10.204 mg/L <br />99.9 <br />75-125 <br />MSD 1201253-01 <br />5.5452 <br />15.655 <br />10.204 mg/L <br />0.6 <br />99.1 <br />20 <br />75-125 <br />QC Batch ID: BVA1525 <br />Used client sample: <br />N <br />Bicarbonate <br />DUP 1201249-02 <br />348.35 <br />350.21 <br />mg/L <br />0.5 <br />10 <br />Carbonate <br />DUP 1201249-02 <br />ND <br />ND <br />mg/L <br />10 <br />Total Alkalinity as CaCO3 <br />DUP 1201249-02 <br />285.70 <br />287.23 <br />mg/L <br />0.5 <br />10 <br />QC Batch ID: BVA1542 <br />Used client sample: Y - Description: MW -4, 01/23/2012 11:19 <br />Chloride <br />DUP 1201253-01 <br />116.36 <br />115.80 <br />mg/L <br />0.5 <br />10 <br />MS 1201253-01 <br />116.36 <br />224.78 <br />101.01 mg/L <br />107 <br />80-120 <br />MSD 1201253-01 <br />116.36 <br />225.83 <br />101.01 mg/L <br />0.5 <br />108 <br />10 <br />80-120 <br />Nitrate as N <br />DUP 1201253-01 <br />MS 1201253-01 <br />10.916 <br />10.916 <br />10.938 <br />21.420 <br />mg/L <br />10.101 mg/L <br />0.2 <br />104 <br />10 <br />80-120 <br />MSD 1201253-01 <br />10.916 <br />21.517 <br />10.101 mg/L <br />0.5 <br />105 <br />10 <br />80-120 <br />Sulfate <br />DUP 1201253-01 <br />424.61 <br />423.57 <br />mg/L <br />0.2 <br />10 <br />MS 1201253-01 <br />424.61 <br />630.90 <br />202.02 mg/L <br />102 <br />80-120 <br />MSD 1201253-01 <br />424.61 <br />634.04 <br />202.02 mg/L <br />0.5 <br />104 <br />10 <br />80-120 <br />QC Batch ID: BVA1626 <br />Used client sample: <br />Y - Description: MW -4, 01/23/2012 11:19 <br />Total Dissolved Solids @ 180 C <br />DUP 1201253-01 <br />1265.0 <br />1270.0 <br />mg/L <br />0.4 <br />10 <br />QC Batch ID: BVA1645 <br />Used client sample: N <br />Bicarbonate <br />DUP 1201356-01 <br />911.88 <br />920.79 <br />mg/L <br />1.0 <br />10 <br />Carbonate <br />DUP 1201356-01 <br />ND <br />ND <br />mg/L <br />10 <br />Total Alkalinity as CaCO3 <br />DUP 1201356-01 <br />747.88 <br />755.19 <br />mg/L <br />1.0 <br />10 <br />The results in this report apply to the samples analyzed <br />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 parry. BC Laboratories, Inc. assumes no responsibility for report alteration, separation, detachment or third party interpretation. <br />4100 Atlas Court Bakersfield, CA 93308 <br />(661) 327-4911 FAX (661) 327-1918 www.bciabs.com <br />Page 44 of 45 <br />