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Laboratories, Inc. <br />Environmental Testing Laboratory Since 1949 <br />Ghaw Reported: 02/10/2011 10:42 <br />180 Promenade Circle, Suite 320 Project: Foothill Landfill <br />Sacramento, CA 95834 Project Number. 139867 (Leachate) <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 />G <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 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.bdabs.com Page 15 of 16 <br />QC Batch ID: BUA1644 <br />Used client sample: Y - Description: <br />L-01, 01/25/2011 12:45 <br />Total Dissolved Solids @ 180 C <br />DUP <br />1101450-01 <br />1030.0 <br />1040.0 <br />mg/L <br />1.0 <br />10 <br />QC Batch ID: BUA1657 <br />Used client sample: <br />Y - Description: <br />MW -4, 01/26/2011 07:39 <br />Chloride <br />DUP <br />1101449-04 <br />6.1720 <br />5.8960 <br />mg/L <br />4.6 <br />10 <br />MS <br />1101449-04 <br />6.1720 <br />111.11 <br />101.01 <br />mg/L <br />104 <br />80-120 <br />MSD <br />1101449-04 <br />6.1720 <br />111.37 <br />101.01 <br />mg/L <br />0.2 <br />104 <br />10 <br />80-120 <br />Nitrate as N <br />DUP <br />1101449-04 <br />1.7800 <br />1.8370 <br />mg/L <br />3.2 <br />10 <br />MS <br />1101449-04 <br />1.7800 <br />6.7960 <br />5.0505 <br />mg/L <br />99.3 <br />80-120 <br />MSD <br />1101449-04 <br />1.7800 <br />6.9091 <br />5.0505 <br />mg/L <br />1.7 <br />102 <br />10 <br />80-120 <br />Sulfate <br />DUP <br />1101449-04 <br />7.7770 <br />7.9970 <br />mg/L <br />2.8 <br />10 <br />MS <br />1101449-04 <br />7.7770 <br />111.64 <br />101.01 <br />mg/L <br />103 <br />80-120 <br />MSD <br />1101449-04 <br />7.7770 <br />111.78 <br />101.01 <br />mg/L <br />0.1 <br />103 <br />10 <br />80-120 <br />QC Batch ID: BUA1703 <br />Used client sample: Y - Description: L-01, 01/25/2011 12:45 <br />rtonate <br />DUP <br />1101450-01 <br />814.69 <br />819.88 <br />mg/L <br />0.6 <br />10 <br />Carbonate <br />DUP <br />1101450-01 <br />ND <br />ND <br />mg/L <br />10 <br />Total Alkalinity as CaCO3 <br />DUP <br />1101450-01 <br />668.17 <br />672.43 <br />mg/L <br />0.6 <br />10 <br />QC Batch ID: BUB0148 <br />Used client sample: N <br />Total Calcium <br />DUP <br />1101292-01 <br />39.209 <br />38.215 <br />mg/L <br />2.6 <br />20 <br />MS <br />1101292-01 <br />39.209 <br />50.141 <br />10.000 <br />mg/L <br />109 <br />75-125 <br />MSD <br />1101292-01 <br />39.209 <br />48.662 <br />10.000 <br />mg/L <br />3.0 <br />94.5 <br />20 <br />75-125 <br />Total Magnesium <br />DUP <br />1101292-01 <br />2.6220 <br />2.5942 <br />mg/L <br />1.1 <br />20 <br />MS <br />1101292-01 <br />2.6220 <br />12.896 <br />10.000 <br />mg/L <br />103 <br />75-125 <br />MSD <br />1101292-01 <br />2.6220 <br />12.890 <br />10.000 <br />mg/L <br />0.0 <br />103 <br />20 <br />75-125 <br />Total Sodium <br />DUP <br />1101292-01 <br />235.31 <br />232.76 <br />mg/L <br />1.1 <br />20 <br />MS <br />1101292-01 <br />235.31 <br />255.09 <br />10.000 <br />mg/L <br />198 <br />75-125 A03 <br />MSD <br />1101292-01 <br />235.31 <br />244.64 <br />10.000 <br />mg/L <br />4.2 <br />93.3 <br />20 <br />75-125 <br />Total Potassium <br />DUP <br />1101292-01 <br />5.7289 <br />5.6873 <br />mg/L <br />0.7 <br />20 <br />MS <br />1101292-01 <br />5.7289 <br />16.681 <br />10.000 <br />mg/L <br />110 <br />75-125 <br />MSD <br />1101292-01 <br />5.7289 <br />16.307 <br />10.000 <br />mg/L <br />2.3 <br />106 <br />20 <br />75-125 <br />G <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 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.bdabs.com Page 15 of 16 <br />