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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> _ McCampbell Analytical, InC. ToIIFreeTelephone:(877)252-9262/Fax:(925)252-9269 <br /> "When Quality Counts" http://www.mccampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: Terracon WorkOrder: 1910073 <br /> Date Prepared: 10/2/19- 10/3/19 BatchID: 186428 <br /> Date Analyzed: 10/2/19- 10/3/19 Extraction Method: E524.3 <br /> Instrument: GC45 Analytical Method: E524.3 <br /> Matrix: Drinking Water Unit: µg/L <br /> Project: NA197078;WHITLOW PROPERTY Sample ID: MB/LCS/LCSD-186428 <br /> 1910073-002AMS/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 0.0077 0.010 - - - <br /> Surrogate Recovery <br /> 1,2-dichlorobenzene-d4 1.0 1 105 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 0.096 0.092 0.10 96 92 70-130 3.71 20 <br /> Surrogate Recovery <br /> 1,2-dichlorobenzene-d4 1.1 1.1 1 108 108 70-130 0 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 0.11 0.11 0.10 0.016 92 91 70-130 1.63 30 <br /> Surrogate Recovery <br /> 1,2-dichlorobenzene-d4 1 1.1 1.1 1 105 106 70-130 0.944 30 <br /> CA ELAP 1644 <br /> Page 6 of 10 <br />