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1 <br /> Laboratories Inc. <br /> Environmental Testing Laboratory 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 Slivala <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <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 Duals <br /> 1 QC Batch ID: BVC0964 Used client sample: N <br /> Gasoline Range Organics(C4-C12) MS 1204254-01 ND 1003.0 1000.0 ug/L 100 70-130 <br /> MSD 1204254-01 ND 1032.1 1000.0 ug/L 2.9 103 20 70-130 <br /> ' a,a,a-Tdfluorotoluens(FID Surrogate) MS 1204254-01 ND 34.857 40.000 ug/L 87.1 70-130 <br /> MSD 1204254-01 ND 34.382 40.000 ug/L 1.4 86.0 70-130 <br /> QC Batch ID: VVC0974 Used client sample: N <br /> ' Gasoline Range Organics(G4-C12) MS 1204254-02 ND 997.83 1000.0 ug/L 99.8 70-130 <br /> MSD 1204254-02 ND 1036.1 1000,0 ug/L 3.8 104 20 70-130 <br /> a,a,a-Trifluorololuene(FID Surrogate) MS 1204254-02 ND 35.294 40.000 ug/L 88.2 70-130 <br /> ' MSD 1204254-02 ND 36.083 40.000 ug/L 2.2 90.2 70-130 <br /> 1 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report most be reproduced in its entirely. <br /> All mulmlatedlnthumponarefnr NOmlmivemcofthesubmitdngr M, aCLebomtodm,l c.assummnormpomibilityforreponaltentiogsematiogdmcbmentorth dp nyintemremtion. <br /> ' 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 vtww.bclabs.com Page 84 of 88 <br />