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Laboratories Inc. <br />Environmental Testing Laboratory Since 1949 <br />Volatile Organic Analysis (EPA Method 8260) <br />Quality Control Report - Method Blank Analysis <br />Constituent <br />QC Sample ID MB Result <br />Units <br />PQL <br />MDL Lab Quals <br />QC Batch ID: BWK1808 <br />Benzene <br />BWK180B-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.083 <br />Bromobenzene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.13 <br />Bromochloromethane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.24 <br />Bromodichioromethane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.14 <br />Bromoform <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.27 <br />Bromomethane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />1.0 <br />0.25 <br />n=Butylbenzene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.11 <br />sec-Butylbenzene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.15 <br />tert-Butylbenzene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.13 <br />Carbon tetrachloride <br />BWK180B-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.18 <br />Chlorobenzene <br />BWK1B08-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.093 <br />Chloroethane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.14 <br />Chloroform <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.12 <br />Chloromethane <br />BWK1806-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.14 <br />2-Chlorotoluene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.20 <br />4-Chlorotoluene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.15 <br />Dibromochloromethane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.13 <br />1,2-Dibromo-3-chloropropane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />1.0 <br />0.44 <br />1,2-Dibromoethane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.16 <br />Dibromomethane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.24 <br />1,2 -Dichlorobenzene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.072 <br />1,3 -Dichlorobenzene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.15 <br />1,4 -Dichlorobenzene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.062 <br />Dichlorodifluoromethane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.099 <br />1,1-Dichloroethane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.11 <br />1,2-Dichloroethane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.17 <br />1,1-Dirhloroethene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.18 <br />cis-1,2-Dichloroethene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.085 <br />trans-1,2-Dichloroethene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.15 <br />1,2-Dichloropropane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.13 <br />1,3-Dichloropropane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.086 <br />2,2-Dichloropropane <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.13 <br />1,1-Dichloropropene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.085 <br />cis-1,3-Dichloropropene <br />BWK1808-BLK1 <br />ND <br />ug/L <br />0.50 <br />0.14 <br />The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. <br />All results listed in this report are for the exclusive use of the submitting party. BC Laboratories, Inc. assumes no responsibility for report alteration, separation, detachment or third parry interpretation <br />4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.bdabs.com Page 20 of 28 <br />