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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Geologic Associates Project: Forward Landfill-Monthly A.S.Tower Reported: 11/04/2009 13:27 <br /> 16885 W.Bernardo Drive Project Number: Monthly <br /> San Diego,CA 92127 Project Manager: Bill Lopez <br /> Volatile Organic Analysis (EPA Method260) <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 /> Benzene BSJ2005 Matrix Spike 0914414-04 ND 24.660 25.000 ug/L 98.6 70-130 <br /> Matrix Spike Duplicate 0914414-04 ND 24.660 25.000 ug/L 0 98.6 20 70-130 <br /> Bromodichloromethane BSJ2005 Matrix Spike 0914414-04 ND 24.780 25.000 ug/L 99.1 70-130 <br /> Matrix Spike Duplicate 0914414-04 ND 25.020 25.000 ug/L 1.0 100 20 70-130 <br /> Chlorobenzene BSJ2005 Matrix Spike 0914414-04 ND 23.090 25.000 ug/L 92.4 70-130 <br /> Matrix Spike Duplicate 0914414-04 ND 23.250 25.000 ug/L 0.7 93.0 20 70-130 <br /> Chloroethane BSJ2005 Matrix Spike 0914414-04 ND 26.270 25.000 ug/L 105 70-130 <br /> Matrix Spike Duplicate 0914414-04 ND 26.960 25.000 ug/L 2.6 108 20 70-130 <br /> 1,4-Dichlorobenzene BSJ2005 Matrix Spike 0914414-04 ND 23.310 25.000 ug/L 93.2 70-130 <br /> Matrix Spike Duplicate 0914414-04 ND 24.390 25.000 ug/L 4.5 97.6 20 70-130 <br /> 1,1-Dichloroethane BSJ2005 Matrix Spike 0914414-04 ND 29.630 25.000 ug/L 119 70-130 <br /> Matrix Spike Duplicate 0914414-04 ND 29.870 25.000 ug/L 0.8 119 20 70-130 <br /> 1,1-Dichloroethene BSJ2005 Matrix Spike 0914414-04 ND 24.560 25.000 ug/L 98.2 70-130 <br /> Matrix Spike Duplicate 0914414-04 ND 24.170 25.000 ug/L 1.6 96.7 20 70-130 <br /> Toluene BSJ2005 Matrix Spike 0914414-04 ND 24.240 25.000 ug/L 97.0 70-130 <br /> Matrix Spike Duplicate 0914414-04 ND 23.930 25.000 ug/L 1.3 95.7 20 70-130 <br /> Trichloroethene BSJ2005 Matrix Spike 0914414-04 ND 25.010 25.000 ug/L 100 70-130 <br /> Matrix Spike Duplicate 0914414-04 ND 24.570 25.000 ug/L 1.8 98.3 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BSJ2005 Matrix Spike 0914414-04 ND 9.3900 10.000 ug/L 93.9 76-114 <br /> Matrix Spike Duplicate 0914414-04 ND 9.8700 10.000 ug/L 98.7 76-114 <br /> Toluene-d8(Surrogate) BSJ2005 Matrix Spike 0914414-04 ND 9.6500 10.000 ug/L 96.5 88-110 <br /> Matrix Spike Duplicate 0914414-04 ND 9.7000 10.000 ug/L 97.0 88-110 <br /> 4-Bromofiuorobenzene(Surrogate) BSJ2005 Matrix Spike 0914414-04 ND 9.7000 10.000 ug/L 97.0 86-115 <br /> Matrix Spike Duplicate 0914414-04 ND 10.300 10.000 ug/L 103 86-115 <br /> The results in this report apply to the samples analyzed in accordance with the chain of cuctody document.This analytical report muni he reproduced in its entirely. <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)327-4911 FAX(661)327-1918 www.bclabs.com Page 6 of 11 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />