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® Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> ave Reported: 01/25/2012 13:24 <br /> 0 Promenade Circle,Suite 320 Project: Foothill Landfill <br /> Sacramento,CA 95834 Project Number. 139867 GW <br /> Project Manager. Sheila Richgels <br /> Volatile Organic Analysis (EPA Method 8260) <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: BVA1098 Used client sample: N <br /> Benzene MS 1119798-99 ND 23.320 25.000 ug/L 93.3 70-130 <br /> MSD 1119798-99 ND 24.600 25.000 ug/L 5.3 98.4 20 70-130 <br /> Bromodichloromethane MS 1119798-99 ND 21.840 25.000 ug/L 87.4 70-130 <br /> MSD 1119798-99 ND 23.360 25.000 ug/L 6.7 93.4 20 70-130 <br /> Chlorobenzene MS 1119798-99 ND 20.870 25.000 ug/L 83.5 70-130 <br /> MSD 1119798-99 ND 22.240 25.000 ug/L 6.4 89.0 20 70-130 <br /> Chloroethane MS 1119798-99 ND 23.090 25.000 ug/L 92.4 70-130 <br /> MSD 1119798-99 ND 25.170 25.000 ug/L 8.6 101 20 70-130 <br /> 1,4-Dichlorobenzene MS 1119798-99 ND 18.620 25.000 ug/L 74.5 70-130 <br /> MSD 1119798-99 ND 19.860 25.000 ug/L 6.4 79.4 20 70-130 <br /> 1,1-Dichloroethane MS 1119798-99 ND 22.920 25.000 ug/L 91.7 70-130 <br /> MSD 1119798-99 ND 24.190 25.000 ug/L 5.4 96.8 20 70-130 <br /> 0 Dichloroethene MS 1119798-99 ND 21.700 25.000 ug/L 86.8 70-130 <br /> MSD 1119798-99 ND 23.740 25.000 ug/L 9.0 95.0 20 70-130 <br /> Toluene MS 1119798-99 ND 22.210 25.000 ug/L 88.8 70-130 <br /> MSD 1119798-99 ND 23.750 25.000 ug/L 6.7 95.0 20 70-130 <br /> Trichloroethene MS 1119798-99 ND 19.750 25.000 ug/L 79.0 70-130 <br /> MSD 1119798-99 ND 21.310 25.000 ug/L 7.6 85.2 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1119798-99 ND 10.430 10.000 ug/L 104 76-114 <br /> MSD 1119798-99 ND 10.180 10.000 ug/L 2.4 102 76-114 <br /> Toluene-d8(Surrogate) MS 1119798-99 ND 10.280 10.000 ug/L 103 88-110 <br /> MSD 1119798-99 ND 10.260 10.000 ug/L 0.2 103 88-110 <br /> 4-Bromofluorobenzene(Surrogate) MS 1119798-99 ND 10.000 10.000 ug/L 100 86-115 <br /> MSD 1119798-99 ND 10.000 10.000 ug/L 0 100 86-115 <br /> Is <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)32714911 FAX(661)327-1918 www.bdabs.com Page 15 of 19 <br />