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7M <br /> Labort .roies <br /> tC. <br /> Environmental ingLaboratory 1949 <br /> Mark R. Magargee PG , CHg Reported : 02/27/2019 17 :09 <br /> 6730 Canaletto Avenue Project: Soil <br /> Bakersfield , CA 93306 Project Number: Sohal #3 <br /> Project Manager: Mark Magargee <br /> Volatile Organic Analysis ( EPA Method 826013 ) <br /> Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals <br /> QC Batch ID : 8038372 Used client sample : N <br /> Benzene MS 1902131 -94 ND 0. 14034 0. 12500 mg/kg 112 70 - 130 <br /> MSD 1902131 -94 ND 0. 14495 0. 12500 mg/kg 3.2 116 20 70 - 130 <br /> Toluene MS 1902131 -94 ND 0. 13274 0. 12500 mg/kg 106 70 - 130 <br /> MSD 1902131 -94 ND 0. 13366 0. 12500 mg/kg 0.7 107 20 70 - 130 <br /> 1 ,2-Dichloroethane-d4 (Surrogate) MS 1902131 -94 ND 0.047650 0.050000 mg/kg 95. 3 70 - 121 <br /> MSD 11902131 -94 ND 0.047670 0.050000 mg/kg 0.0 95.3 70 - 121 <br /> TolueneA8 (Surrogate) MS 1902131 -94 ND 0. 048950 0.050000 mg/kg 97. 9 81 - 117 <br /> MSD 1902131 -94 ND 0. 048210 0.050000 mg/kg 1 .5 96.4 81 - 117 <br /> 4-Bromofluorobenzene (Surrogate) MS 1902131 -94 ND 0.049180 0.050000 mg/kg 98. 4 74 - 121 <br /> MSD 1902131 -94 ND 0. 048120 0.050000 mg/kg 2.2 96.2 74 - 121 <br /> QC Batch ID : 8038645 Used client sample : N <br /> Benzene MS 1902131 -96 ND 0. 16157 0. 12500 mg/kg 129 70 - 130 <br /> MSD 1902131 -96 ND 0. 16054 0. 12500 mg/kg 0.6 128 20 70 - 130 <br /> Toluene MS 1902131 -96 ND 0. 14162 0. 12500 mg/kg 113 70 - 130 <br /> MSD 1902131 -96 ND 0. 14108 0. 12500 mg/kg 0.4 113 20 70 - 130 <br /> 1 ,2-DichloroethaneA4 (Surrogate) MS 1902131 -96 ND 0. 049020 0.050000 mg/kg 98.0 70 - 121 <br /> MSD 1902131 -96 ND 0. 048000 0.050000 mg/kg 2. 1 96.0 70 - 121 <br /> Toluene-d8 (Surrogate) MS 1902131 -96 ND 0.048700 0.050000 mg/kg 97.4 81 - 117 <br /> MSD 1902131 -96 ND 0.049560 0.050000 mg/kg 1 .8 99. 1 81 - 117 <br /> 4-Bromofluorobenzene (Surrogate) MS 1902131 -96 ND 0. 048990 0. 050000 mglkg 98. 0 74 - 121 <br /> MSD 1902131 -96 ND 0. 047970 0 . 050000 mg/kg 2. 1 95. 9 74 - 121 <br /> The results in Ihis report apply to the samples nnnlp_ed in accordance frith Me chain of custody document . This analytical report mast he reproduced in Us ettirery. <br /> All results listed in this report are for the exclusive use of the submitting parry. DC Laboratories, Inc. assumes no responsibility for report alteration, separation, detachment or third party interpretation. <br /> Report ID: 1000856214 4100 Atlas Court Bakersfield, CA 93308 (661 ) 327-4911 FAX (661 ) 327-1918 www. bclabs.com Page 26 of 30 <br />