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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> W Reported: 01/25/2012 15:04 <br /> Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> I <br /> ramento,CA 95834 Project Number. 139874 <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 Quals <br /> QC Batch ID: BVA0625 Used client sample: N <br /> Benzene MS 1119798-89 ND 25.000 25.000 ug/L 100 70-130 <br /> MSD 1119798-89 ND 24.410 25.000 ug/L 2.4 97.6 20 70-130 <br /> Bromodichloromethane MS 1119798-89 ND 24.820 25.000 ug/L 99.3 70-130 <br /> MSD 1119798-89 ND 24.600 25.000 ug/L 0.9 98.4 20 70-130 <br /> Chlorobenzene MS 1119798-89 ND 23.970 25.000 ug/L 95.9 70-130 <br /> MSD 1119798-89 ND 23.560 25.000 ug/L 1.7 94.2 20 70-130 <br /> Chloroethane MS 1119798-89 ND 24.940 25.000 ug/L 99.8 70-130 <br /> MSD 1119798-89 ND 24.920 25.000 ug/L 0.1 99.7 20 70-130 <br /> 1,4-Dichlorobenzene MS 1119798-89 ND 23.110 25.000 ug/L 92.4 70-130 <br /> MSD 1119798-89 ND 22.910 25.000 ug/L 0.9 91.6 20 70-130 <br /> 1,1-Dichloroethane MS 1119798-89 ND 24.410 25.000 ug/L 97.6 70-130 <br /> MSD 1119798-89 ND 23.790 25.000 ug/L 2.6 95.2 20 70-130 <br /> 0 lchloroethene MS 1119798-89 ND 23.780 25.000 ug/L 95.1 70-130 <br /> MSD 1119798-89 ND 23.930 25.000 ug/L 0.6 95.7 20 70-130 <br /> Toluene MS 1119798-89 ND 24.910 25.000 ug/L 99.6 70-130 <br /> MSD 1119798-89 ND 24.450 25.000 ug/L 1.9 97.8 20 70-130 <br /> Trichloroethene MS 1119798-89 ND 24.890 25.000 ug/L 99.6 70-130 <br /> MSD 1119798-89 ND 23.650 25.000 ug/L 5.1 94.6 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1119798-89 ND 10.480 10.000 ug/L 105 76-114 <br /> MSD 1119798-89 ND 10.170 10.000 ug/L 3.0 102 76-114 <br /> Toluene-d8(Surrogate) MS 1119798-89 ND 10.230 10.000 ug/L 102 88-110 <br /> MSD 1119798-89 ND 10.110 10.000 ug/L 1.2 101 88-110 <br /> 4-Bromofluorobenzene(Surrogate) MS 1119798-89 ND 9.5200 10.000 ug/L 95.2 86-115 <br /> MSD 1119798-89 ND 9.5400 10.000 ug/L 0.2 95.4 86-115 <br /> QC Batch ID: BVA0792 Used client sample: N <br /> Benzene MS 1200705-02 ND 24.780 25.000 ug/L 99.1 70-130 <br /> MSD 1200705-02 ND 25.430 25.000 ug/L 2.6 102 20 70-130 <br /> Bromodichloromethane MS 1200705-02 ND 22.460 25.000 ug/L 89.8 70-130 <br /> MSD 1200705-02 ND 23.440 25.000 ug/L 4.3 93.8 20 70-130 <br /> Chlorobenzene MS 1200705-02 ND 22.580 25.000 ug/L 90.3 70-130 <br /> MSD 1200705-02 ND 23.040 25.000 ug/L 2.0 92.2 20 70-130 <br /> Chloroethane MS 1200705-02 ND 24.400 25.000 ug/L 97.6 70-130 <br /> MSD 1200705-02 ND 25.120 25.000 ug/L 2.9 100 20 70-130 <br /> 1,4-Dichlorobenzene MS 1200705-02 ND 20.030 25.000 ug/L 80.1 70-130 <br /> MSD 1200705-02 ND 20.430 25.000 ug/L 2.0 81.7 20 70-130 <br /> Dichloroethane MS 1200705-02 ND 23.870 25.000 ug/L 95.5 70-130 <br /> MSD 1200705-02 ND 24.730 25.000 ug/L 3.5 98.9 20 70-130 <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 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.bciabs.com Page 34 of 40 <br />