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7M <br /> Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Ground Zero Analysis , Inc. Reported : 01 /27/2020 7 :46 <br /> 1172 Kansas Avenue Project: Bentz - Associated Tractor <br /> Modesto , CA 95351 Project Number: 1174 <br /> Project Manager: Project Manager <br /> Volatile Organic Analysis ( EPA Method 82606 ) <br /> Quality Control Report - Method Blank Analysis <br /> Constituent QC Sample ID MB Result Units PQL MDL Lab Quals <br /> QC Batch ID : 8068809 <br /> o-Xylene B068809-BLK1 ND mg/kg 0 . 0050 0.0021 <br /> Total Purgeable Petroleum Hydrocarbons 13068809-BLK1 ND mg/kg 0.20 0. 13 <br /> 1 ,2-Dichloroethane-d4 (Surrogate) B068809-BLK1 110 % 70 - 121 (LCL - UCL) <br /> Toluene-d8 (Surrogate) B068809-BLK1 100 % 81 - 117 (LCL - UCL) <br /> 4-Bromofluorobenzene (Surrogate) B068809-BLK1 102 % 74 - 121 (LCL - UCL) <br /> QC Batch ID : B068853 <br /> Benzene 8068853-BLK1 ND ug/L 0. 50 0. 083 <br /> Bromobenzene B068853-BLK1 ND ug/L 0. 50 0. 13 <br /> Bromochloromethane 8068853-BLK1 ND ug/L 0. 50 0.24 <br /> Bromodichloromethane 8068853-BLK1 ND ug/L 0.50 0 . 14 <br /> Bromoform 8068853-BLK1 ND ug/L 0. 50 0. 27 <br /> Bromomethane 13068853-BLK1 ND ug/L 1 . 0 0. 25 <br /> n-Butylbenzene B068853-BLK1 ND ug/L 0.50 0. 11 <br /> - <br /> sec-Butylbenzene 8068853-BLK1 ND ug/L 0.50 0 . 15 <br /> tert-Butylbenzene 8068853-BLK1 ND ug/L 0. 50 0 . 13 <br /> Carbon tetrachloride B068853-BLK1 ND ug/L 0. 50 0. 18 <br /> Chlorobenzene 8068853-BLK1 ND ug/L 0. 50 0. 093 <br /> Chloroethane 8068853-BLK1 ND ug/L 0.50 0 . 14 <br /> Chloroform 8068853-BLK1 ND ug/L 0. 50 0. 12 <br /> Chloromethane B068853-BLK1 ND ug/L 0. 50 0 . 14 <br /> 2-Chlorotoluene 6068853-BLK1 ND ug/L 0. 50 0.20 <br /> 4-Chlorotoluene B068853-13LK1 ND ug/L 0.50 0. 15 <br /> Dibromochloromethane 8068853-13LK1 ND ug/L 0. 50 0 . 13 <br /> 1 ,2-Dibromo-3-chloropropane B068853-BLK1 ND ug/L 1 . 0 0.44 <br /> 1 , 2-Dibromoethane 6068853-BLK1 ND ug/L 0. 50 0. 16 <br /> Dibromomethane B068853-BLK1 ND ug/L 0. 50 0.24 <br /> 1 ,2-Dichlorobenzene 8068853-BLK1 ND ug/L 0.50 0. 072 <br /> - <br /> - <br /> 1 , 3-Dichlorobenzene B068853-BLK1 ND ug/L 0. 50 0 . 15 <br /> 1 ,4-Dichlorobenzene 8068853-BLK1 ND ug/L 0. 50 0. 062 <br /> Dichlorodifluoromethane 8068853-BLK1 ND ug/L 0.50 0.099 <br /> 1 , 1 -Dichloroethane 8068853-BLK1 ND ug/L 0.50 0. 11 <br /> 1,2-Dichloroethane 8068853-BLK1 ND ug/L 0. 50 0 . 17 <br /> - <br /> 1 , 1 -Dichloroethene 6068853-13LK1 ND ug1 0. 50 0 . 18 <br /> The results in this report apply to the samples analyzed in accordance ulith the chair ofcustody document . This analytical report most be reproduced in its entirely. <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 party interpretation. <br /> Report ID : 1000990981 4100 Atlas Court Bakersfield , CA 93308 (661 ) 327-4911 FAX (661 ) 327-1918 www. bciabs. com Page 26 of 35 <br />