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l 1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> M c C a m p b e I l Analytic al, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> ,%at "When Quality Countsrr http://www.mccanTbell.com/E-mail:main@mccmVbell.com <br /> Quality Control Report <br /> Client: Kleinfelder,Inc. WorkOrder: 201OC13 <br /> Date Prepared: 10/26/2020 BatchID: 208162 <br /> Date Analyzed: 10/26/2020 Extraction Method: E524.3 <br /> Instrument: GC45 Analytical Method: E524.3 <br /> Matrix: Drinking Water Unit: µg/L <br /> Project: 20200630.00IA/02-0002;Costco Tracy Hansen Sample ID: MB/LCS/LCSD-208162 <br /> Trailer Yard NL SS <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 0.00630 0.0100 - - - <br /> Surrogate Recovery <br /> tert-Butyl methyl ether-d3 1.10 1 109 70-130 <br /> 4-BFB 0.941 1 94 70-130 <br /> 1,2-dichlorobenzene-d4 1.07 1 107 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 0.104 0.101 0.10 104 101 70-130 3.39 20 <br /> Surrogate Recovery <br /> tert-Butyl methyl ether-d3 1.14 1.13 1 114 113 70-130 1.53 20 <br /> 4-BFB 0.982 0.982 1 98 98 70-130 0.0370 20 <br /> 1,2-dichlorobenzene-d4 1.05 1.05 1 105 105 70-130 0.242 20 <br /> CA ELAP 1644 <br /> Page 10 of 17 <br />