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Laboratories Inc. <br />Environmental Testing Laboratory Since 1949 <br />Shaw Reported: 02/14/2013 14:28 <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 - Laboratory Control Sample <br />Control Limits <br />Spike Percent Percent Lab <br />:onstituent QC Sample ID Type Result Level Units Recovery RPD Recovery RPD Quals <br />C <br />QC Batch ID: BWB0313 <br />Total Dissolved Solids @ 180 C <br />BWB0313-BSI <br />LCS <br />560.00 <br />586.00 <br />mg/L <br />95.6 <br />90-110 <br />QC Batch ID: BWB0317 <br />Chloride <br />BWB0317-BS1 <br />LCS <br />53.107 <br />50.000 <br />mg/L <br />106 <br />90-110 <br />Nitrate as N <br />BWB0317-BS1 <br />LCS <br />5.1720 <br />5.0000 <br />mg/L <br />103 <br />90-110 <br />Sulfate <br />BWB0317-BS1 <br />LCS <br />106.82 <br />100.00 <br />mg/L <br />107 <br />90-110 <br />QC Batch ID: BWBO461 <br />Total Alkalinity as CaCO3 <br />BWB0461-BS3 <br />LCS <br />100.10 <br />100.00 <br />mg/L <br />100 <br />90-110 <br />QC Batch ID: BWB0472 <br />Total Calcium <br />BWB0472-BS1 <br />LCS <br />10.574 <br />10.000 <br />mg/L <br />106 <br />85-115 <br />Total Magnesium <br />BWB0472-BS1 <br />LCS <br />10.400 <br />10.000 <br />mg/L <br />104 <br />85-115 <br />Total Sodium <br />BWB0472-BS1 <br />LCS <br />10.269 <br />10.000 <br />mg/L <br />103 <br />85-115 <br />Total Potassium <br />BWB0472-BSI <br />LCS <br />10.207 <br />10.000 <br />mg/L <br />102 <br />85-115 <br />• <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 iisted in this report are for the exclusive use of the submitting party. BC Laboratories, Inc. assumes no responsibility for report alteration, separation, detachment cr third parry interpretation. <br />4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.bdabs.com Page 14 of 16 <br />