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Laboratories, Inc. <br /> Environmental Testng Laboratory Since 1949 <br /> TRC Reported: 03/07/2011 16:35 <br /> 123 Technology Drive Project: 10013 <br /> Irvine,CA 92618 Project Number. 4514507960 <br /> Project Manager. Anju Farfan <br /> 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 puais <br /> QC Batch ID: BUC0530 Used client sample: N <br /> Diesel Range Organics(C12-C24) MS 071494513 NO 529.44 500.00 ug/L 106 36-130 <br /> MSD 0714945-13 NO 525.68 500.00 ug/L 0.7 105 30 36-130 <br /> Tetracosans(Surrogate) MS 071494513 NO 26.128 20.000ug/L 131 28-139 <br /> MSD 071494513 ND 24.797 20.000 ug/L 8.2 124 28-139 <br /> The remlu in this report apply to the$m Rlm awlysed in aneoroonce with the CW7 ofcurtody do erv.This—bc-1 reporl man be reproduced in iv entirety. <br /> Alli Ian.-d in this sport erefor the uclmlve use oftbe suh-iftg party.BC Iabontories,Inc.asmwes oo rtspom3ility for report eiterLioq upentiov,enxhmeot or th'vd party IotWmsuion. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 vavw.bdabs.com <br /> Page 87 of 88 <br />