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1534 Willow Pass Road.Pittsburg,CA 94565-1701 <br /> M c C a m p b e l l Analytical, Inc. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> When Qua i(v Counts" I http:/hvww.mccampbell.com/E-mail:min@inecEunpbell.com <br /> Quality Control Report <br /> Client: Excelchem Environmental Labs WorkOrder: 2104071 <br /> Date Prepared: 04/03/2021 BatchID: 218722 <br /> Date Analyzed: 04/03/2021 Extraction Method: E350.1 <br /> Instrument: WC_SKALAR Analytical Method: E350.1 <br /> Matrix: Water Unit: mg/L <br /> Project: 2103218 Sample ID: MB/LCS/LCSD-218722 <br /> QC Summary Report for E350.1 <br /> Analyte MB MDL RL <br /> Result <br /> Ammonia,total as N ND 0.0920 0.100 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Ammonia,total as N 4.08 4.34 4 102 109 88-113 6.28 20 <br /> Page 10 of 16 <br />