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Laboratories Inc. Environmental Testing Laboratory Since 1949 Geologic Associates Project: Forward Landfill-Monthly Reported: 04/13/2010 14:27 16885 W. Bernardo Drive Project Number: Tower Effluent San Diego,CA 92127 Project Manager: Bill Lopez Volatile Organic Analysis ( ) Quality Control Report - Precision & Accuracy Control Limits Source Source Spike Percent Percent Constituent Batch ID QC Sample Type Sample ID Result Result Added Units RPD Recovery RPD Recove Lab Quals Benzene BTD0488 Matrix Spike 1004400-01 ND 24.440 25.000 ug/L 97.8 70-130 Matrix Spike Duplicate 1004400-01 ND 25.700 25.000 ug/L 5.0 103 20 70-130 Bromodichloromethane BTDO488 Matrix Spike 1004400-01 ND 24.960 25.000 ug/L 99.8 70-130 Matrix Spike Duplicate 1004400-01 ND 25.320 25.000 ug/L 1.4 101 20 70-130 Chlorobenzene BTD0488 Matrix Spike 1004400-01 ND 24.960 25.000 ug/L 99.8 70-130 Matrix Spike Duplicate 1004400-01 ND 25.430 25.000 ug/L 1.9 102 20 70-130 Chloroethane BTD0488 Matrix Spike 1004400-01 ND 25.080 25.000 ug/L 100 70-130 Matrix Spike Duplicate 1004400-01 ND 26.110 25.000 ug/L 4.0 104 20 70-130 1,4-Dichlorobenzene BTD0488 Matrix Spike 1004400-01 ND 23.530 25.000 ug/L 94.1 70-130 Matrix Spike Duplicate 1004400-01 ND 23.860 25.000 ug/L 1.4 95.4 20 70-130 1,1-Dichloroethane BTDO488 Matrix Spike 1004400-01 ND 24.580 25.000 ug/L 98.3 70-130 Matrix Spike Duplicate 1004400-01 ND 25.670 25.000 ug/L 4.3 103 20 70-130 1,1-Dichloroethene BTD0488 Matrix Spike 1004400-01 ND 22.590 25.000 ug/L 90.4 70-130 Matrix Spike Duplicate 1004400-01 ND 23.240 25.000 ug/L 2.8 93.0 20 70-130 Toluene BTD0488 Matrix Spike 1004400-01 ND 24.930 25.000 ug/L 99.7 70-130 Matrix Spike Duplicate 1004400-01 ND 24.790 25.000 ug/L 0.6 99.2 20 70-130 Trichloroethene BTDO488 Matrix Spike 1004400-01 ND 25.070 25.000 ug/L 100 70-130 Matrix Spike Duplicate 1004400-01 ND 25.000 25.000 ug/L 0.3 100 20 70-130 1,2-Dichloroethane-d4(Surrogate) BTDO488 Matrix Spike 1004400-01 ND 10.590 10.000 ug/L 106 76-114 Matrix Spike Duplicate 1004400-01 ND 11.040 10.000 ug/L 110 76-114 Toluene-d8(Surrogate) BTD0488 Matrix Spike 1004400-01 ND 10.220 10.000 ug/L 102 88-110 Matrix Spike Duplicate 1004400-01 ND 9.9400 10.000 ug/L 99.4 88-110 4-Bromofluorobenzene(Surrogate) BTD0488 Matrix Spike 1004400-01 ND 10.030 10.000 ug/L 100 86-115 Matrix Spike Duplicate 1004400-01 ND 9.9900 10.000 ug/L 99.9 86-115 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. 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. 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 10 of 17 Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A