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1 � <br /> 1 Geocon Consultants,Inc. Project Number: Former Wards and Unocal,59482-06-02 <br /> 3160 Gold Valley Drive,Suite 800 Report To: Josh Ewert <br /> Rancho Cordova,CA 95742 Reported: 01/23/2012 <br /> 1 <br /> 1 BTEXIMTBE by EPA 8021 -Quality Control(cont'd) <br /> 1 Result PQL Spike Source %Rec RPD <br /> Analyte (ug/kg) (ug/kg) Level Result %Rec Limits RPD Limit Notes <br /> 1 Batch B2A0518-GCVOAS(continued) <br /> Matrix Spike(B2A0518-MSI)-Continued Source:1200135-07RE1 Prepared: 1/20/2012 Analyzed: 1/20/2012 <br /> o-Xylene 77 5.0 73.5 ND 104 31-166 <br /> 1 Surrogate:4-BrontoJluombenzene 97 100 96.5 65-140 <br /> Matrix Spike Dup(B2A0518-MSDI) Source:1200135-07RE1 Prepared:1/20/2012 Analyzed:1/20/2012 <br /> MTBE 400 5.0 430 ND 92.8 39-121 3.79 20 <br /> 1 Benzene 28 5.0 40.8 ND 68.5 69-264 3.08 20 M3 <br /> Toluene 160 5.0 202 ND 80.6 44-150 3.61 20 <br /> Ethylbenzene 54 5.0 76.0 ND 70.6 37-161 3.73 20 <br /> 1 m,p-Xylene 190 5.0 206 ND 92.8 30-149 2.95 20 <br /> o-Xylene 75 5.0 73.5 ND 102 31-166 2.38 20 <br /> Surrogate:4-BromoJluombemene 99 100 98.7 65-140 <br /> 1 <br /> 1 <br /> i <br /> 1 <br /> 1 <br />!� 1 <br /> 1 <br />�,1 3275 Walnut Avenue,Signal Hill, CA 90755•Tel:562-989-4045 •Fax:562-989-4040•www.atlglobaGcoin Page 8 of 11 <br />