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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" http://www.mccampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: AdvancedGeo,Inc. WorkOrder: 22061351 <br /> Date Prepared: 06/25/2022 BatchID: 248696 <br /> Date Analyzed: 06/25/2022 Extraction Method: SW5030B <br /> Instrument: GC45 Analytical Method: SW8260B <br /> Matrix: Water Unit: µg/L <br /> Project: Pina Propertty Sample ID: MB/LCS/LCSD-248696 <br /> QC Summary Report for SW8260B <br /> Analyte MB MDL RL SPK MB SS MB SS <br /> Result Val %REC Limits <br /> 1,2-Dibromo-3-chloropropane ND 0.010 0.020 - - - <br /> Surrogate Recovery <br /> 4-BFB 1.8 2.5 72 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 1.3 1.5 1.6 80 91 50-130 12.8 20 <br /> Surrogate Recovery <br /> 4-BFB 2.0 1.9 2.5 79 76 70-130 3.00 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 6 of 10 <br />