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McCampbell Analytical Inc. 1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> Toll Fme Telephone:(877)252-9262/Fac:(925)252-9269 <br /> "When Quality Counts" hdpl/www.mccampbell.com/E-mail:mafii@m cempbeu.com <br /> Quality Control Report <br /> Client: CH2M HILL WorkOrder: 1712687 <br /> Date Prepared: 12/18/17 BatchID: 150359 <br /> Date Analyzed: 12/18/17- 12/19/17 Extraction Method: SW5030B <br /> Instrument: GC10,GC28 Analytical Method: SW8260B <br /> Matrix: Soil Unit: mg/kg <br /> Project: 693815.TM.VA.01.00;PG&E 2017 Cntl Valley S- Sample ID: MB/LCS-150359 <br /> 600 MCDnIdISIStn 1712761-00]AMS/MSD <br /> QC Summary Report for SW8260B <br /> Analyte MS MSD SPK SPKRef MS MSD MS/MSD RPD RPD <br /> Result Result Val Val %REC %REC Limits Limit <br /> Surrogate Recovery <br /> Dibromoiluoromelhane 0.140 0.144 0.12 112 115 82-136 2.80 20 <br /> Toluene-l8 0.155 0.153 0.12 124 122 92-139 1.32 20 <br /> 4-BFB 0.0137 0.0138 0.012 110 110 82-135 0 20 <br /> Benzene-d6 0.111 0.108 0.10 111 108 55-122 2.78 20 <br /> Ethylbenzene-d10 0.119 0.115 0.10 119 115 58-141 4.06 20 <br /> 1,2-DCB-d4 0.0967 0.0966 0.10 97 97 51-107 0 20 <br /> f� r- <br /> -it L. <br /> DEC 272017 <br /> CAELAP 1644•NELAP 4033ORELAP ENVIRONMENTAL HEALTH <br /> DEPARTMENT <br /> Page 15 of 26 <br />