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TestAme <br />ca <br />85 is Driv <br />Morgan Hill, CA 95037 <br />(408) 76-9600 <br />(4os> n6-9600 <br />FAX (408) 782-6308 <br />www.testamericainc.com <br />THE LEADER IN ENVIRONMEN <br />AL TESTING <br />Union Pacific Railroad - Stockton <br />Project_ NEW PROFILE <br />MQH0220 <br />833 E. 8th St. <br />Project Number. [none] <br />Reported: <br />Stockton CA, 95206 <br />Project Manager. Jim Diel <br />08/21/07 09:49 <br />Volatile Organic <br />Compounds by EPA Method 8260B - Quality Control <br />TestAmerica - Morgan Hill, CA <br />Reporting <br />Spike Source <br />°/.REC <br />RPD <br />Analyte <br />Result <br />Limit Units <br />Level Result <br />°/.REC <br />Limits RPD <br />Limit Notes <br />Batch 7H15029 - EPA 5030B/503 <br />McOH / EPA 8260B <br />Blank (7H15029-BLK1) <br />Prepared c& Analyzed: 08/15/07 <br />Methylene chloride <br />ND <br />0.050 mg/kg <br />Naphthalene <br />ND <br />0.20 " <br />p-Isopropyltoluene <br />ND <br />0.050 " <br />n-Propylbenzene <br />ND <br />0.050 " <br />Styrene <br />ND <br />0.050 " <br />1,1,1,2 -Tetrachloroethane <br />ND <br />0.050 " <br />1,1,2,2 -Tetrachloroethane <br />ND <br />0.050 " <br />Tetrachloroethane <br />ND <br />0.050 " <br />Tohtene <br />ND <br />0.050 " <br />1,2,3-Triehlorobenze ne <br />ND <br />0.050 " <br />1,2,4-Trichlorobetnzene <br />ND <br />0.050 " <br />1,1,1 -Trichloroethane <br />ND <br />0.050 " <br />1,1,2 -Trichloroethane <br />ND <br />0.050 " <br />Trichloroethene <br />ND <br />0.050 " <br />Trichlorofluoromethane <br />ND <br />0.10 " <br />1,2,3-Trichloropropane <br />ND <br />0,050 " <br />1,2,4-Trimethylbenzene <br />ND <br />0.050 " <br />1,3,5-Trimethylbenzene <br />ND <br />0.050 " <br />Vinyl chloride <br />ND <br />0.050 " <br />Xylenes (total) <br />ND <br />0.050 " <br />Surrogate: DibromoJluoromethane <br />0.00227 <br />0.00250 <br />91 <br />70-120 <br />Surrogate: 1,1-Dichloroethane-d4 <br />0.00243 <br />0.00250 <br />97 <br />65-135 <br />Surrogate: Toluene -d8 <br />0.00242 <br />0.00250 <br />97 <br />75-120 <br />Surrogate:4-BromoJluorobenzene <br />0.00228 <br />0.00250 <br />91 <br />60.120 <br />Laboratory Control Sample (7H15029 <br />BS1) <br />Prepared: 08/15/07 <br />Analyzed: <br />08/16/07 <br />Benzene <br />1.03 <br />0.050 mg/kg <br />1.00 <br />103 <br />70-140 <br />Bromobenzene <br />1.09 <br />0.050 <br />1.00 <br />109 <br />70-145 <br />Bromochloromethane <br />1.02 <br />0.050 <br />1.00 <br />102 <br />70-145 <br />Bromodiehloromedwe <br />0.987 <br />0.050 <br />1.00 <br />99 <br />75-135 <br />Bromoform <br />0.884 <br />0.050 <br />1.00 <br />88 <br />50-130 <br />Bromomethane <br />0.544 <br />0.20 <br />1.00 <br />54 <br />10-150 <br />sec-Butylbenzene <br />1.14 <br />0.050 <br />1.00 <br />114 <br />70-150 <br />tert-Butylbenzene <br />1.13 <br />0.050 <br />1.00 <br />113 <br />70-150 <br />n-Butylbenzene <br />1.11 <br />0.050 <br />1.00 <br />111 <br />70-145 <br />Carbon tetrachloride <br />0.812 <br />0.050 <br />1.00 <br />81 <br />60-135 <br />TestAtnerica - 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 8 of 17 <br />