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- LaboratoriInc. <br /> Environmental Testing Laboraes tory Since 1949 <br /> ATC Associates Reported: 03/26/2012 15:13 <br /> 3600 Madison Ave,Suite 64 Project: 10013 <br /> North Highlands,CA 95660 Project Number: [none] <br /> Project Manager: Gabe Stivala <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: BVC0857 Used client sample: N <br /> Benzene MS 1204254-12 NO 24.010 25.000 ug/L 96.0 70-130 <br /> MSD 1204254-12 NO 24.430 25.000 ug/L 1.7 97.7 20 70-130 <br /> Toluene MS 120425412 NO 27.040 25.000 ug/L 108 70-130 <br /> MSD 120425412 NO 28.080 25.000 ug/L 3.8 112 20 70-130 <br /> 1,2-Dichloroethane-i:14(Surrogate) MS 120425412 NO 9.5200 10.000 ug/L 95.2 76-114 <br /> MSD 1204254-12 NO 9.6100 10.000 ug/L 0.9 96.1 76-114 <br /> Toluene-tle(Surrogate) MS 1204254-12 NO 9.5200 10.000 ug/L 95.2 88-110 <br /> MSD 120425412 NO 9.7000 10.000 ug/L 1.9 97.0 88-110 <br /> ' 4-BromoBuorobenzene(Surrogate) MS 120425412 NO 9.7300 10.000 ug/L 97.3 88-115 <br /> MSD 1204254-12 NO 9.7900 10.000 ug/L 0.6 97.9 86-115 <br /> QC Batch ID: BVC0858 Used client sample: N <br /> Benzene MS 1204254-13 NO 20.700 25.000 ug/L 82.8 70-130 <br /> MSD 120425413 NO 24.390 25.000 ug/L 16.4 97.6 20 70-130 <br /> Toluene MS 120425413 NO 23.510 25.000 ug/L 94.0 70-130 <br /> MSD 120425413 NO 26.690 25.000 ug/L 12.7 107 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1204254-13 NO 10.270 10.000 ug/L 103 76-114 <br /> MSD 120425413 NO 9.9600 10.000 ug/L 3.1 99.6 76-114 <br /> ' Toluene-d8(Surrogate) MS 1204254-13 NO 9.5100 10.000 ug/L 95.1 88-110 <br /> MSD 1204254-13 NO 9.5400 10.000 ug/L 0.3 95.4 88-110 <br /> 4Bromofluorobenzene(Surrogate) MS 120425413 NO 9.7800 10.000 ug/L 97.8 86-115 <br /> MSD 120425413 NO 10.110 10.000 ug/L 3.3 101 86-115 <br /> 1 <br /> The results in this report apply to the samples analyzed in accordance with the chain <br /> sum u nody documeN.This analytical report must be reproduced d its entirety. <br /> All resdE luted in Nis report ere for the exdmive use of the submiNng party.HC Laboretmim,Inc.assumes nn responsibility fm report ahemtian,sepemfion,demclunent or third party interyrmtion. <br /> ' 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 w .bdabs.com Page 81 of 88 <br />