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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> < M c Campbell Analytical, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> "When Quality Counts" http://www.imcampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: AdvancedGeo,Inc. WorkOrder: 2012635 <br /> Date Prepared: 12/15/2020- 12/16/2020 BatchlD: 211396 <br /> Date Analyzed: 12/15/2020- 12/16/2020 Extraction Method: SW5030B <br /> Instrument: GC16 Analytical Method: SW8260B <br /> Matrix: Water Unit: µg/L <br /> Project: Montoya Property Sample ID: MB/LCS/LCSD-211396 <br /> 2012635-OOIBMS/MSD <br /> QC Summary Report for SW8260B <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Surrogate Recovery <br /> Dibromofluoromethane 26.2 26.4 25 105 106 76-110 0.716 20 <br /> Toluene-d8 27.7 27.5 25 111 110 84-111 0.648 20 <br /> 4-BFB — — 2.09 2.14 2.5 84 86 64-121 2.12 20 <br /> Analyte MS MS MSD SPK SPKRef MS MSD MS/MSD RPD RPD <br /> DF Result Result Val Val %REC %REC Limits Limit <br /> 1,2-Dibromo-3-chloropropane 1 3.24 2.02 2 ND 162 101 26-168 46.3,F1 20 <br /> Surrogate Recovery <br /> Dibromofluoromethane 1 24.2 24.1 25 97 96 78-112 0.428 20 <br /> Toluene-d8 1 28.1 28.3 25 113,F3 113,F3 82-109 0.599 20 <br /> 4-BFB 1 2.41 2.45 2.5 96 98 63-121 1.55 20 <br />