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SunStar <br />PROVLaboratories, Inc. <br />MING QUALITY ANALYTICAL SERVICES NATIONWIDE. <br />25712 Commercentre Drive <br />Lake Forest, California 92630 <br />949.297.5020 Phone <br />949.297.5027 Fax <br />Brusca Associates Inc. Project: Lathrop 48 Acre Property <br />PO Box 332 Project Number: 137-002 Reported: <br />Roseville CA, 95661 Project Manager: Joe Brusca 05/16/17 12:00 <br />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />SunStar Laboratories, Inc. <br />Reporting Spike Source %REC RPD <br />Analyte Result MDL Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 7042822 - EPA 5030 GCMS <br />LCS Dup (7042822-BSDI) <br />Prepared: 04/28/17 Analyzed: 04/29/17 <br />1,1-Dichloroethene <br />29.8 <br />1.2 <br />ug/I 25.0 119 <br />75-125 <br />2.97 <br />20 <br />Trichloroethene <br />25.6 <br />1.2 <br />25.0 102 <br />75-125 <br />0.686 <br />20 <br />Benzene <br />27.3 <br />0.62 <br />25,0 109 <br />75-125 <br />2.55 <br />20 <br />Toluene <br />25.0 <br />0.62 <br />25.0 100 <br />75-125 <br />4.03 <br />20 <br />Batch 7042825 - EPA 5030 GCMS <br />Blank (7042825-BLKI) <br />Prepared & Analyzed: 04/28/17 <br />Surrogate:4-Bromofluorobenzene <br />37.6 <br />ug/kg 40.0 94.1 <br />81.2-123 <br />Surrogate: Dibromofluoromethane <br />39.2 <br />40.0 98.0 <br />95.7-135 <br />Surrogate: Toluene -d8 <br />38.0 <br />40.0 95.0 <br />85.5-116 <br />Bromobenzene <br />ND <br />5.0 <br />" <br />Bromochloromethane <br />ND <br />5.0 <br />" <br />Bromodichloromethane <br />ND <br />5.0 <br />" <br />Bromoform <br />ND <br />5.0 <br />" <br />Bromomethane <br />ND <br />5.0 <br />" <br />n-Butylbenzene <br />ND <br />5.0 <br />" <br />sec-Butylbenzene <br />ND <br />5.0 <br />" <br />tert-Butylbenzene <br />ND <br />5.0 <br />" <br />Carbon tetracbloride <br />ND <br />5.0 <br />" <br />Chlorobenzene <br />ND <br />5.0 <br />" <br />Chloroethane <br />ND <br />5.0 <br />" <br />Chloroform <br />ND <br />5.0 <br />" <br />Chloromethane <br />ND <br />5.0 <br />" <br />2-Clilorotoluene <br />ND <br />5.0 <br />4-Clilorotoluene <br />ND <br />5.0 <br />" <br />Dibromochloromethane <br />ND <br />5.0 <br />" <br />1,2-Dibromo-3-chloropropane <br />ND <br />10 <br />" <br />1,2-Dibromoethane (EDB) <br />ND <br />5.0 <br />" <br />SunStar Laboratories, Inc. The results in this report apply to the samples analyzed in accordance with the chain of <br />custody document. This analytical report must be reproduced in its entirety. <br />449e, <br />Page 88 of 94 <br />