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im Laboratories Inc. <br />Environmental Testing Laboratory Since 1949 it <br />haw Reported: 02/14/2013 14:31 <br />180 Promenade Circle, Suite 320 Project: Foothill Landfill <br />Sacramento, CA 95834 Project Number. 139867 <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: BWBO313 <br />Used client sample: <br />N <br />Total Dissolved Solids @ 180 C <br />DUP 1302489-01 <br />935.00 <br />935.00 <br />mg/L <br />0 <br />10 <br />QC Batch ID: BWBO317 <br />Used client sample: <br />Y - Description: MW -2R, 02/04/2013 11.41 <br />Chloride <br />DUP 1302490-01 <br />4.9580 <br />4.7990 <br />mg/L <br />3.3 <br />10 <br />MS 1302490-01 <br />4.9580 <br />55.436 <br />50.505 <br />mg/L <br />99.9 <br />80-120 <br />MSD 1302490-01 <br />4.9580 <br />55.444 <br />50.505 <br />mg/L <br />0.0 <br />100 <br />10 <br />80-120 <br />Nitrate as N <br />DUP 1302490-01 <br />2.7430 <br />2.7220 <br />mg/L <br />0.8 <br />10 <br />MS 1302490-01 <br />2.7430 <br />7.8061 <br />5.0505 <br />mg/L <br />100 <br />80-120 <br />MSD 1302490-01 <br />2.7430 <br />7.8111 <br />5.0505 <br />mg/L <br />0.1 <br />100 <br />10 <br />80-120 <br />Sulfate <br />DUP 1302490-01 <br />1.5010 <br />1.5090 <br />mg/L <br />0.5 <br />10 <br />MS 1302490-01 <br />1.5010 <br />101.81 <br />101.01 <br />mg/L <br />99.3 <br />80-120 <br />MSD 1302490-01 <br />1.5010 <br />101.75 <br />101.01 <br />mg/L <br />0.1 <br />99.2 <br />10 <br />80-120 <br />QC Batch ID: BWB0347 <br />Used client sample: <br />Y - Description: MW -2R, 02/04/2013 11:41 <br />solved Calcium <br />DUP 1302490-01 <br />15.082 <br />15.146 <br />mg/L <br />0.4 <br />20 <br />MS 1302490-01 <br />15.082 <br />25.239 <br />10.204 <br />mg/L <br />99.5 <br />75-125 <br />MSD 1302490-01 <br />15.082 <br />25.411 <br />10.204 <br />mg/L <br />0.7 <br />101 <br />20 <br />75-125 <br />Dissolved Magnesium <br />DUP 1302490-01 <br />7.8730 <br />8.0115 <br />mg/L <br />1.7 <br />20 <br />MS 1302490-01 <br />7.8730 <br />17.683 <br />10.204 <br />mg/L <br />96.1 <br />75-125 <br />MSD 1302490-01 <br />7.8730 <br />18.219 <br />10.204 <br />mg/L <br />3.0 <br />101 <br />20 <br />75-125 <br />Dissolved Sodium <br />DUP 1302490-01 <br />12.507 <br />12.538 <br />mg/L <br />0.2 <br />20 <br />MS 1302490-01 <br />12.507 <br />22.736 <br />10.204 <br />mg/L <br />100 <br />75-125 <br />MSD 1302490-01 <br />12.507 <br />22.788 <br />10.204 <br />mg/L <br />0.2 <br />101 <br />20 <br />75-125 <br />Dissolved Potassium <br />DUP 1302490-01 <br />3.0890 <br />3.1065 <br />mg/L <br />0.6 <br />20 <br />MS 1302490-01 <br />3.0890 <br />12.859 <br />10.204 <br />mg/L <br />95.7 <br />75-125 <br />MSD 1302490-01 <br />3.0890 <br />12.870 <br />10.204 <br />mg/L <br />0.1 <br />95.9 <br />20 <br />75-125 <br />QC Batch ID: BWB0460 <br />Used client sample: <br />N <br />Bicarbonate <br />DUP 1302455-03 <br />127.06 <br />127.24 <br />mg/L <br />0.1 <br />10 <br />Carbonate <br />DUP 1302455-03 <br />ND <br />ND <br />mg/L <br />10 <br />Total Alkalinity as CaCO3 <br />DUP 1302455-03 <br />104.21 <br />104.36 <br />mg/L <br />0.1 <br />10 <br />QC Batch ID: BWB0461 <br />Used client sample: <br />Y - Description: <br />MW -3, 02/04/2013 12:58 <br />Bicarbonate <br />DUP 1302490-02 <br />135.60 <br />135.22 <br />mg/L <br />0.3 <br />10 <br />Carbonate <br />DUP 1302490-02 <br />ND <br />ND <br />mg/L <br />10 <br />Total Alkalinity as CaCO3 <br />DUP 1302490-02 <br />111.21 <br />110.90 <br />mg/L <br />0.3 <br />10 <br />11 <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 Labomtories, 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.bciabs.com Page 35 of 36 <br />