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85 <br />TestAmenca (408) 7 Drive <br />Morgan Hill, CA 95037 <br />(408)776-9600 <br />FAX (408) 782-6308 <br />wwwtestamericainc. com <br />THE LEADER IN ENVIRONMENi<AL TESTING <br />Union Pacific Railroad - Stockton Project: NEW PROFILE MQH0220 <br />833 E. 8th St. Project Number. [none] Reported: <br />Stockton CA, 95206 Project Manager. Jim Diel 08/21/07 09:49 <br />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />TestAmerica - Morgan Hill, CA <br />Reporting Spike Source %REC RPD <br />Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 7H15029 - EPA 5030B/5035t WOH / EPA 8260B <br />Laboratory Control Sample (7H150299 BS1) <br />Prepared: 08/15/07 Analyzed: 08/16/07 <br />Chlorobenzene <br />1.03 <br />0.050 <br />mg/kg 1.00 <br />103 <br />75-140 <br />Chloroethane <br />0.633 <br />0.20 <br />1.00 <br />63 <br />10-150 <br />Chloroform <br />1.02 <br />0.050 <br />1.00 <br />102 <br />75-125 <br />Chloromethane <br />0.852 <br />0.20 <br />1.00 <br />85 <br />25-150 <br />2-Chlorotoluene <br />1.10 <br />0.050 <br />1.00 <br />110 <br />70-150 <br />4-Chlorotoluene <br />1.08 <br />0.050 <br />1.00 <br />108 <br />70-145 <br />1,2-Dibromo-3-ebloropropane <br />0.934 <br />0.10 <br />1.00 <br />93 <br />50-135 <br />Dibromochloromethane <br />0.772 <br />0.050 <br />1.00 <br />77 <br />65-135 <br />1,2-Dibromoethane (EDB) <br />1.09 <br />0.050 <br />1.00 <br />109 <br />70-145 <br />Dibromomethane <br />1.04 <br />0.050 <br />1.00 <br />104 <br />75-140 <br />1,2 -Dichlorobenzene <br />1.10 <br />0.050 <br />1.00 <br />110 <br />70-145 <br />1,3 -Dichlorobenzene <br />1.08 <br />0.050 <br />1.00 <br />108 <br />75-140 <br />1,4 -Dichlorobenzene <br />1.08 <br />0.050 <br />1.00 <br />108 <br />70-140 <br />Dichlorodifluoromethane <br />0.649 <br />0.050 <br />1.00 <br />65 <br />10-125 <br />1,1-Dichloroethane <br />1.01 <br />0.050 <br />1.00 <br />101 <br />75-130 <br />1,2-Dichloroethane <br />1.03 <br />0.050 <br />1.00 <br />103 <br />75-130 <br />L.1-Dichloroethene <br />1.05 <br />0.050 <br />I'M <br />105 <br />70-140 <br />cis- 1,2-Diehlorcethene1 <br />1.06 <br />0.050 <br />1.00 <br />106 <br />75-140 <br />trans-l,2-Dichieroethene <br />1.01 <br />0.050 <br />1.00 <br />101 <br />70-135 <br />1,2-Dichloropropane <br />1.07 <br />0.050 <br />1.00 <br />107 <br />75-135 <br />1,3-Dichloropropane <br />1.09 <br />0.050 <br />1.00 <br />109 <br />80-140 <br />2,2-Dichloropropane <br />1.09 <br />0.050 <br />1.00 <br />109 <br />55-135 <br />1,1-Dichloropropene <br />1.04 <br />0.050 <br />1.00 <br />104 <br />75-130 <br />Ethylbenzene <br />1.05 <br />0.050 <br />1.00 <br />105 <br />75-140 <br />Hexachlorobutadiene <br />1.10 <br />0.050 <br />1.00 <br />110 <br />65-150 <br />Isopropylbenzene <br />0.955 <br />0,050 <br />1.00 <br />96 <br />40-150 <br />Methylene chloride <br />1.11 <br />0.050 <br />1.00 <br />111 <br />70-150 <br />Naphthalene <br />1.14 <br />0.20 <br />1.00 <br />114 <br />55-145 <br />p-Isopropyholuene <br />1.13 <br />0.050 <br />1.00 <br />113 <br />70-150 <br />n-Propylbenzene <br />1.05 <br />0.050 <br />1.00 <br />105 <br />70-140 <br />Styrene <br />1.09 <br />0.050 <br />1.00 <br />109 <br />65-150 <br />1,1,1,2 -Tetrachloroethane <br />1.07 <br />0.050 <br />1.00 <br />107 <br />70-140 <br />1,1,2,2 -Tetrachloroethane <br />1.17 <br />0.050 <br />1.00 <br />117 <br />55-150 <br />Tetrachloroethene <br />0.983 <br />0.050 <br />1.00 <br />98 <br />70.140 <br />Toluene <br />1.05 <br />0.050 <br />1.00 <br />105 <br />75-135 <br />1,2,3-Trichlorobenzene <br />1.09 <br />0.050 <br />1.00 <br />109 <br />65-150 <br />TestAmerica - Morgan Hill, CA <br />The results in this report apply to the samples analyzed in accordance with the chain of <br />custody document. Unless otherwise stated, results are reported on a wet weight basis. <br />This analytical report must be reproduced in its entirety. <br />Page 9 of 17 <br />