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I MLaboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Shaw Project: Foothill Landfill Reported: 02/22/2010 12:27 <br /> 1326 North Market Boulevard Project Number: 124591 Groundwater <br /> Sacramento,CA 95834 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 <br /> Constituent Batch ID QC Sample Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Lab Quals <br /> Bromodichloromethane BTBO371 Matrix Spike 0917254-80 ND 24.128 25.000 ug/L 96.5 70-130 <br /> Matrix Spike Duplicate 0917254-80 ND 24.313 25.000 ug/L 0.8 97.3 20 70-130 <br /> Chlorobenzene BTB0371 Matrix Spike 0917254-80 ND 25.835 25.000 ug/L 103 70-130 <br /> Matrix Spike Duplicate 0917254-80 ND 25.683 25.000 ug/L 0.6 103 20 70-130 <br /> Chloroethane STB0371 Matrix Spike 0917254-80 ND 25.262 25.000 ug/L 101 70-130 <br /> Matrix Spike Duplicate 0917254-80 ND 24.602 25.000 ug/L 2.7 98.4 20 70-130 <br /> 1,4-Dichlorobenzene STB0371 Matrix Spike 0917254-80 ND 27.012 25.000 ug/L 108 70-130 <br /> Matrix Spike Duplicate 0917254-80 ND 26.758 25.000 ug/L 0.9 107 20 70-130 <br /> 1,1-Dichloroethane BTB0371 Matrix Spike 0917254-80 ND 25.468 25.000 ug/L 102 70-130 <br /> Matrix Spike Duplicate 0917254-80 ND 24.592 25.000 ug/L 3.5 98.4 20 70-130 <br /> 1,1-Dichloroethene BTB0371 Matrix Spike 0917254-80 ND 24.052 25.000 ug/L 96.2 70-130 <br /> Matrix Spike Duplicate 0917254-80 ND 23.899 25.000 ug/L 0.6 95.6 20 70-130 <br /> Toluene BTB0371 Matrix Spike 0917254-80 ND 25.918 25.000 ug/L 104 70-130 <br /> Matrix Spike Duplicate 0917254-80 ND 25.442 25.000 ug/L 1.9 102 20 70-130 <br /> Trichloroethene BTB0371 Matrix Spike 0917254-80 ND 26.730 25.000 ug/L 107 70-130 <br /> Matrix Spike Duplicate 0917254-80 ND 24.989 25.000 ug/L 6.7 100 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BTB0371 Matrix Spike 0917254-80 ND 9.1777 10.000 ug/L 91.8 76-114 <br /> Matrix Spike Duplicate 0917254-80 ND 9.0570 10.000 ug/L 90.6 76-114 <br /> Toluene-d8(Surrogate) BTB0371 Matrix Spike 0917254-80 ND 9.8150 10.000 ug/L 98.2 88-110 <br /> Matrix Spike Duplicate 0917254-80 ND 9.8901 10.000 ug/L 98.9 88-110 <br /> 4-Bromofluorobenzene(Surrogate) BTB0371 Matrix Spike 0917254-80 ND 9.4198 10.000 ug/L 94.2 86-115 <br /> Matrix Spike Duplicate 0917254-80 ND 9.4101 10.000 ug/L 94.1 86-116 <br /> The results in this report apply to the samples analysed in accordance with the chain ofcusiogv document.This analytical report must be reproduced in its entirety. <br /> All results listed in this report aro 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 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 35 of 47 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />