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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.mccampbefl.com/E-mail:main@mccmWbell.com <br /> Quality Control Report <br /> Client: BSK Associates Engineers&Laboratories WorkOrder: 2406L80 <br /> Date Prepared: 07/10/2024 BatchID: 297377 <br /> Date Analyzed: 07/13/2024-07/16/2024 Extraction Method: DOD QSM <br /> Instrument: LC-MS3 Analytical Method: DOD QSM <br /> Matrix: Waste Water Unit: ng/L <br /> Project: E2001601F.004.002; SCK Sample ID: MB/LCS/LCSD-297377 <br /> QC Summary Report for DoD QSM 5.3 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> PFPeS 16 18 16 103 112 71-127 8.70 30 <br /> PFTeDA 14 15 16 89 96 71-132 8.58 30 <br /> PFTrDA 11 14 16 66 89 65-144 29.6 30 <br /> PFUnA 16 16 16 98 97 69-133 0.957 30 <br /> DoD-ELAP Cert#L22-757•CA ELAP 1644 <br /> Page 26 of 31 <br />