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:% Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Shaw Project: Foothill Landfill Reported: 02/11/2010 13:28 <br /> 1326 North Market Boulevard Project Number: 124591,Leachate <br /> Sacramento,CA 95834 Project Manager: Sheila Richgels <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Report- Laboratory Control Sample <br /> Control Limits <br /> Spike Percent Percent <br /> Constituent Batch ID QC Sample ID QC Type Result Level PQL Units Recovery RPD Recovery RPD Lab Quals <br /> Benzene BTB0280 BTB0280-BS1 LCS 26.642 25.000 0.50 ug/L 107 70-130 <br /> Bromodichloromethane BTB0280 BTB0280-BS1 LCS 25.482 25.000 0.50 ug/L 102 70-130 <br /> Chlorobenzene BTB0280 BTB0280-BS1 LCS 26.875 25.000 0.50 ug/L 108 70-130 <br /> Chloroethane BTB0280 BTB0280-BS1 LCS 27.778 25.000 0.50 ug/L 111 70-130 <br /> 1,4-Dichlorobenzene BTB0280 BTB0280-BS1 LCS 28.189 25.000 0.50 ug/L 113 70-130 <br /> 1,1-Dichloroethane BT80280 BTB0280-BS1 LCS 27.646 25.000 0.50 ug/L 111 70-130 <br /> 1,1-Dichloroethene BTB0280 BTB0280-BSI LCS 26.212 25.000 0.50 ug/L 105 70-130 <br /> Toluene BTB0280 BTB0280-BSI LCS 26.685 25.000 0.50 ug/L 107 70-130 <br /> Trichloroethene BTB0280 BTB0280-BS1 LCS 27.925 25.000 0.50 ug/L 112 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BTB0280 BTB0280-BS1 LCS 9.9178 10.000 ug/L 99.2 76-114 <br /> Toluene-d8(Surrogate) BTB0280 BTB0280-BS1 LCS 9.6370 10.000 ug/L 96.4 88-110 <br /> 4-Bromofluorobenzene(Surrogate) BTB0280 BTB0280-BS1 LCS 9.5929 10.000 ug/L 95.9 86-115 <br /> The results in this report apply to the samples analysed in accordance with the chain o(cusitn4-document This analytical report must he 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 Alas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.brAabs.com Page 9 of 15 <br /> Certifications: California-ELAP Certification N 6 <br /> 186; Nevada Administrative Code-NAC-446A 0 <br />