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Laboratories Inc. <br />Environmental Testing Laboratory Since 1949 <br />Shaw Reported: 06/08/2010 11:34 <br />1326 North Market Boulevard Project: Foothill Landfill <br />Sacramento, CA 95834 Project Number: 124591 <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 />:onstituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals <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 parry. BC Laboratones, Inc. assumes no responsibility for report alteration, separation, detachment or third party interpretation. <br />4100 Atlas Court Bakersfield, CA 93308 (661) 3274911 FAX (661) 327-1918 www.bclabs.com Page 18 of 19 <br />QC Batch ID: BTE1706 <br />Used client sample: <br />N <br />Dissolved Calcium <br />DUP 1007217-03 <br />118.82 <br />116.09 <br />mg/L <br />2.3 <br />20 <br />MS 1007217-03 <br />118.82 <br />129.77 <br />10.204 <br />mg/L <br />107 <br />75-125 <br />MSD 1007217-03 <br />118.82 <br />132.10 <br />10.204 <br />mg/L <br />19.3 <br />130 <br />20 <br />75-125 A03 <br />Dissolved Magnesium <br />DUP 1007217-03 <br />40.047 <br />39.638 <br />mg/L <br />1.0 <br />20 <br />MS 1007217-03 <br />40.047 <br />50.686 <br />10.204 <br />mg/L <br />104 <br />75-125 <br />MSD 1007217-03 <br />40.047 <br />51.538 <br />10.204 <br />mg/L <br />7.7 <br />113 <br />20 <br />75-125 <br />Dissolved Sodium <br />DUP 1007217-03 <br />43.089 <br />43.129 <br />mg/L <br />0.1 <br />20 <br />MS 1007217-03 <br />43.089 <br />53.133 <br />10.204 <br />mg/L <br />98.4 <br />75-125 <br />MSD 1007217-03 <br />43.089 <br />54.249 <br />10.204 <br />mg/L <br />10.5 <br />109 <br />20 <br />75-125 <br />Dissolved Potassium <br />DUP 1007217-03 <br />6,3200 <br />6.2440 <br />mg/L <br />1.2 <br />20 <br />MS 1007217-03 <br />6.3200 <br />16.886 <br />10.204 <br />mg/L <br />104 <br />75-125 <br />MSD 1007217-03 <br />6.3200 <br />16.942 <br />10.204 <br />mg/L <br />0.5 <br />104 <br />20 <br />75-125 <br />QC Batch ID: BTE1716 <br />Used client sample: <br />N <br />Chloride <br />DUP 1007234-01 <br />27.425 <br />27.305 <br />mg/L <br />0.4 <br />10 <br />MS 1007234-01 <br />27.425 <br />138.34 <br />101.01 <br />mg/L <br />110 <br />80-120 <br />MSD 1007234-01 <br />27.425 <br />137.43 <br />101.01 <br />mg/L <br />0.8 <br />109 <br />10 <br />80-120 <br />Nitrate as N <br />DUP 1007234-01 <br />2.9450 <br />2.9420 <br />mg/L <br />0.1 <br />10 <br />MS 1007234-01 <br />2.9450 <br />8.1626 <br />5.0505 <br />mg/L <br />103 <br />80-120 <br />MSD 1007234-01 <br />2.9450 <br />8.1798 <br />5.0505 <br />mg/L <br />0.3 <br />104 <br />10 <br />80-120 <br />Sulfate <br />DUP 1007234-01 <br />19.794 <br />19.507 <br />mg/L <br />1.5 <br />10 <br />MS 1007234-01 <br />19.794 <br />125.63 <br />101.01 <br />mg/L <br />105 <br />80-120 <br />MSD 1007234-01 <br />19.794 <br />125.16 <br />101.01 <br />mg/L <br />0.4 <br />104 <br />10 <br />80-120 <br />QC Batch ID: BTE1729 <br />Used client sample: <br />Y - Description: MW -4, 05/26/2010 08:33 <br />Bicarbonate <br />DUP 1007257-01 <br />130.02 <br />130.02 <br />mg/L <br />0 <br />10 <br />Carbonate <br />DUP 1007257-01 <br />ND <br />ND <br />mg/L <br />10 <br />Total Alkalinity as CaCO3 <br />DUP 1007257-01 <br />106.64 <br />106.64 <br />m /L <br />0 <br />10 <br />QC Batch ID: BTF0333 <br />Used client sample: <br />N <br />Total Dissolved Solids @ 180 C <br />DUP 1007246-11 <br />686.66 <br />693.33 <br />mg/L <br />1.0 <br />10 <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 parry. BC Laboratones, Inc. assumes no responsibility for report alteration, separation, detachment or third party interpretation. <br />4100 Atlas Court Bakersfield, CA 93308 (661) 3274911 FAX (661) 327-1918 www.bclabs.com Page 18 of 19 <br />