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TestAmerica <br /> THE LEADER IN ENVIRONMENTAL TE$TIN© 17461 Derian Avenue.Suite 100, Irvine,CA 92614(949)261-1022 fu:(949)260-3297 <br /> Conestoga-Rovers&Associates-Emeryville Shell Project ID: 3515 Nary Dr.,Stockton,CA <br /> Sampled: 03/29/11-03/30/11 <br /> 5900 Hollis St.,Suite A <br /> Emeryville,CA 94608 Report Number: IUC3240 Received: 03/31/11 <br /> Attention: Aubrey Cool <br /> DATA QUALIFIERS AND DEFINITIONS <br /> C Calibration Verification recovery was above the method control limit for this analyte. Analyte not detected,data not <br /> impacted. <br /> L Laboratory Control Sample and/or Laboratory Control Sample Duplicate recovery was above the acceptance limits. <br /> Analyte not detected,data not impacted. <br /> M7 The MS and/or MSD were above the acceptance limits. See Blank Spike(LCS). <br /> MNR No results were reported for the MS/MSD. The sample used for the MS/MSD required dilution due to the sample <br /> matrix. Because of this,the spike compounds were diluted below the detection limit. <br /> Z3 The sample required a dilution due to the nature of the sample matrix. Because of this dilution,the surrogate spike <br /> concentration in the sample was reduced to a level where the recovery calculation does not provide useful <br /> information. <br /> ZX Due to sample matrix effects,the surrogate recovery was outside the acceptance limits. <br /> ND Analyte NOT DETECTED at or above the reporting limit or MDL,if MDL is specified. <br /> RPD Relative Percent Difference <br /> ADDITIONAL COMMENTS <br /> For 9260 analyses: <br /> .Due to the high water solubility of alcohols and ketones,the calibration criteria for these compounds is<30%RSD. <br /> The average%RSD of all compounds in the calibration is 15%,in accordance with EPA methods. <br /> For Volatile Fuel Hydrocarbons(C4-Cl2): <br /> Volatile Fuel Hydrocarbons(C4-Cl2)are quantitated against a gasoline standard. Quantitation begins immediately before TBA-d9. <br /> For Extractable Fuel Hydrocarbons(EFH,DRO,ORO): <br /> Unless otherwise noted,Extractable Fuel Hydrocarbons(EFH,DRO,ORO)are quantitated against a Diesel Fuel Standard. <br /> TestAmerica Irvine <br /> Lena Davidkova For Philip Sanelle <br /> Project Manager <br /> The results pertain only to the samples rested in the laboratory. This report shall not be reproduced, /UC3240 GPage 22 Of 23> <br /> except m full,without written permisslonfrom TestAmericn. <br />