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r � <br /> Labora Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Geologic Associates Reported: 03/23/2011 10:04 <br /> 16885 W. Bernardo Drive Project: Forward Landfill-Monthly A.S.Tower <br /> San Diego, CA 92127 Project Number: [none] <br /> Project Manager: Bill Lopez <br /> Volatile Organic Analysis <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 Recoveg RPD Recove Quals <br /> QC Batch ID: BU21289 Used client sample: N <br /> Benzene MS 1104069-19 ND 25.150 25.000 ug/L 101 70-130 <br /> MSD 1104069-19 ND 24.700 25.000 ug/L 1.8 98.8 20 70-130 <br /> Bromodichloromethane MS 1104069-19 ND 26.480 25.000 ug/L 106 70-130 <br /> MSD 1104069-19 ND 25.130 25.000 ug/L 5.2 101 20 70-130 <br /> Chlorobenzene MS 1104069-19 ND 26.520 25.000 ug/L 106 70-130 <br /> MSD 1104069-19 ND 25.210 25.000 ug/L 5.1 101 20 70-130 <br /> Chloroethane MS 1104069-19 ND 22.930 25.000 ug/L 91.7 70-130 <br /> MSD 1104069-19 ND 25.290 25.000 ug/L 9.8 101 20 70-130 <br /> 1,4-Dichlorobenzene MS 1104069-19 ND 28.480 25.000 ug/L 114 70-130 <br /> MSD 1104069-19 ND 27.200 25.000 ug/L 4.6 109 20 70-130 <br /> 1,1-Dichloroethane MS 1104069-19 ND 25.990 25.000 ug/L 104 70-130 <br /> MSD 1104069-19 ND 25.280 25.000 ug/L 2.8 101 20 70-130 <br /> 1,1-Dichloroethene MS 1104069-19 ND 25.100 25.000 ug/L 100 70-130 <br /> MSD 1104069-19 ND 26.190 25.000 ug/L 4.3 105 20 70-130 <br /> Toluene MS 1104069-19 ND 25.970 25.000 ug/L 104 70-130 <br /> MSD 1104069-19 ND 25.490 25.000 ug/L 1.9 102 20 70-130 <br /> Trichloroethene MS 1104069-19 ND 27.550 25.000 ug/L 110 70-130 <br /> MSD 1104069-19 ND 26.890 25.000 ug/L 2.4 108 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1104069-19 ND 10.440 10.000 ug/L 104 76-114 <br /> MSD 1104069-19 ND 8.9600 10.000 ug/L 15.3 89.6 76-114 <br /> Toluene-d8(Surrogate) MS 1104069-19 ND 9.9800 10.000 ug/L 99.8 88-110 <br /> MSD 1104069-19 ND 9.7300 10.000 ug/L 2.5 97.3 88-110 <br /> 4-Bromofluorobenzene(Surrogate) MS 1104069-19 ND 10.200 10.000 ug/L 102 86-115 <br /> MSD 1104069-19 ND 9.9500 10.000 ug/L 2.5 99.5 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 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 14 of 18 <br />