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M Campbell Analytical, Inc. *4e "When Quality Counts" <br />1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 <br />http://www.mccampbell.com / E-mail: main@mccampbell.com <br /> <br />Quality Control Report <br />Client: Yara North America WorkOrder: 2101638 <br />Date Prepared: 01/15/2021 BatchID: 213244 <br />Date Analyzed: 01/15/2021 <br /> Extraction Method: SW3550B <br />Instrument: GC48 <br /> Analytical Method: SW8270C <br />Matrix: Soil <br /> <br />Unit: mg/Kg <br />Project: New Site Pond <br /> Sample ID: MB/LCS/LCSD-213244 <br />QC Summary Report for SW8270C <br />Analyte LCS <br />Result <br />LCSD <br />Result <br />SPK <br />Val <br />LCS <br />70REC <br />LCSD <br />'MEC <br />LCS/LCSD <br />Limits <br />RPD RPD <br />Limit <br />Surrogate Recovery <br />2-Fluorophenol 1.23 1.29 1.25 98 103 70-130 4.64 30 <br />Phenol-d5 1.22 1.26 1.25 98 101 70-130 3.13 30 <br />Nitrobenzene-d5 1.16 1.18 1.25 92 95 60-130 2.34 30 <br />2-Fluorobiphenyl 1.12 1.17 1.25 90 94 60-130 4.58 30 <br />2,4,6-Tribromophenol 0.949 0.969 1.25 76 78 30-130 2.08 30 <br />4-Terphenyl-d14 1.19 1.22 1.25 95 98 40-130 2.81 30 <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 44 of 51