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t"irocon Project: Portola Railyard <br /> 1 Folsom Blvd Suite 220 Pro ect Number: 48671j Reported: <br /> ramento, CA 95826 Project Manager: Tino Maestas 10/11/06 15:38 <br /> BTEX/TPHG by PID/FID-Quality Control <br /> Reporting Spike Source %RHC RPD <br /> Analyte Result Limb Units Level Result %REC Limits RPD Limit Notes <br /> Batch APJ0028-EPA 8021B/8015M <br /> Blank(APJ0028-BLK1) Prepared&Analyzed: 10/09/06 <br /> Surrogate:Chlorobenzene 11.5 ug/kg 12.5 92.0 70-130 <br /> Benzene ND 0.005 mg/kg <br /> Toluene ND 0.005 " <br /> Ethylbenzene ND 0.005 " <br /> Xylenes(total) ND 0.010 " <br /> Gasoline Range Hydrocarbons ND 1.00 " <br /> LCS(APJ0028-BS1) Prepared&Analyzed: 10/09/06 <br /> Surrogate:Chlorobenzene 0.0465 mg/kg 0.0500 93.0 80-120 <br /> Benzene 0.046 0.005 0.0500 92.0 M120 <br /> Toluene 0.046 0.005 0.0500 92.0 80-120 <br /> Ethylbenzene 0.045 0.005 0.0500 90.0 80.120 <br /> Xylenes(total) 0.134 0.010 " 0.150 89.3 80-120 <br /> Dup(APJ0028-BSD1) Prepared&Analyzed: 10/09/06 <br /> gate:Chlorobenzene 0.0484 mg/kg 0.0500 968 80-120 <br /> Benzene 0.048 0.005 0.0500 96.0 80-120 4.26 20 <br /> Toluene 0.047 0.005 0.0500 94.0 80-120 2.15 20 <br /> Ethylbenzene 0.047 0.005 0.0500 94.0 80-120 4.35 20 <br /> Xylenes(total) 0.139 0.010 0.150 92.7 80-120 3.66 20 <br /> Matrix Spike(APJ0028-MS1) Source:0610016-01 Prepared&Analyzed: 10/09/06 <br /> Surrogate:Chlorobenzene 0.0484 mg/kg 0.0500 968 80-120 <br /> Benzene 0.047 0.005 0.0500 ND 94.0 80-120 <br /> Toluene 0.047 0.005 0.0500 ND 94.0 80-120 <br /> Ethylbenzene 0.047 0.005 " 0.0500 ND 94.0 80-120 <br /> Xylenes(total) 0.139 0.010 0.150 ND 92.7 80-120 <br /> (Chem Environmental Lab. The results in this report apply to the samples analyzed in accordance w4th the chain of <br /> custody document This analytical report must be reproduced in its enhYety. <br /> Laboratory Representative Page 5 of 9 <br />