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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> M c C a m p b e I l Analytical, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> "When Quality Counts" I <br /> http://www.mccampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: Petralogix WorkOrder: 2109E30 <br /> Date Prepared: 10/08/2021 BatchID: 231042 <br /> Date Analyzed: 10/08/2021 Extraction Method: E524.3 <br /> Instrument: GC45 Analytical Method: E524.3 <br /> Matrix: Drinking Water Unit: µg/L <br /> Project: NLS/SSS Stockton Sample ID: MB/LCS/LCSD-231042 <br /> 2109E30-001 BMS/MSD <br /> QC Summary Report for E524.3 <br /> Analyte MB MDL RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> 1,2-Dibromo-3-chloropropane ND 0.00840 0.0100 - - - <br /> Surrogate Recovery <br /> 4-BFB 1.04 1 104 70-130 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> 1,2-Dibromo-3-chloropropane 0.0883 0.116 0.10 88 116 70-130 26.9,F2 20 <br /> Surrogate Recovery <br /> 4-BFB 1.02 1.04 1 102 104 70-130 1.62 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 0.105 0.124 0.10 ND 105 124 70-130 16.9 30 <br /> Surrogate Recovery <br /> 4-BFB 1 1.03 1.04 1 103 104 70-130 1.01 30 <br /> CA ELAP 1644 <br /> Page 7 of 11 <br />