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McCampbell Analytical, Inc. <br />"When Quality Counts" <br />1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />Toll Free Telephone: (877) 252-9262 / Fax: (925)252-9269 <br />http://www.mccampbell.com / E-mail: main@mccampbell.com <br /> <br />Quality Control Report <br />Client: Castle Analytical Laboratory WorkOrder: 2007D44 <br />Date Prepared: 08/04/2020 <br />BatchID: 203092 <br />Date Analyzed: 08/04/2020 Extraction Method: E624.1 <br />Instrument: GC38 Analytical Method: E624.1 <br />Matrix: Water Unit: µg/L <br />Project: 2007093/ Mizkan DRT 3297 / DRT 1026 Sample ID: MB/LCS/LCSD-203092 <br />QC Summary Report for E624.1 <br />Analyte MB MDL RL SPK MB SS MB SS <br />Result Val %REC Limits <br />Surrogate Recovery <br />Dibromofluoromethane 25.6 25 102 76-110 <br />Toluene-d8 25.2 25 101 84-111 <br />4-BFB 2.38 2.5 95 64-121 <br />(Cont.) <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 14 of 30