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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Shaw Reported: 08/24/2011 16:19 . <br /> 180 Promenade Circle,Suite 320 Project: Foothill Landfill <br /> Sacramento,CA 95834 Project Number. 139867 <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 Quats <br /> QC Batch ID: BUH1118 Used client sample: N <br /> 1,1-Dichloroethene MS 1112892-01 ND 27.420 25.000 ug/L 110 70-130 <br /> MSD 1112892-01 ND 28.840 25.000 ug/L 5.0 115 20 70-130 <br /> Toluene MS 1112892-01 ND 26.190 25.000 ug/L 105 70-130 <br /> MSD 1112892-01 ND 26.100 25.000 ug/L 0.3 104 20 70-130 <br /> Trichloroethene MS 1112892-01 4.5500 30.670 25.000 ug/L 104 70-130 <br /> MSD 1112892-01 4.5500 30.390 25.000 ug/L 0.9 103 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1112892-01 ND 10.370 10.000 ug/L 104 76-114 <br /> MSD 1112892-01 ND 10.600 10.000 ug/L 2.2 106 76-114 <br /> Toluene-d8(Surrogate) MS 1112892-01 ND 10.070 10.000 ug/L 101 88-110 <br /> MSD 1112892-01 ND 10.020 10.000 ug/L 0.5 100 88-110 <br /> 4-Bromofluorobenzene(Surrogate) MS 1112892-01 ND 10.220 10.000 ug/L 102 86-115 <br /> MSD 1112892-01 ND 10.210 10.000 ug/L 0.1 102 86-115 <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 is 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.bclabs.com Page 32 of 36 <br />