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(--ft McCampbell Analytical, Inc. Wircie "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@mccarnpbell.com <br /> <br />Quality Control Report <br />Client: Atlas Technical Consultants WorkOrder: 2102A42 <br />Date Prepared: 02/18/2021 BatchID: 215584 <br />Date Analyzed: 02/18/2021 Extraction Method: SW3550B <br />Instrument: GC48 Analytical Method: SW8270C <br />Matrix: Soil Unit: mg/Kg <br />Project: 91-57962-PW; FUHSD Sample ID: MB/LCS/LCSD-215584 <br />QC Summary Report for SW8270C <br />Analyte LCS <br />Result <br />LCSD <br />Result <br />SPK <br />Val <br />LCS <br />%REC <br />LCSD <br />%REC <br />LCS/LCSD <br />Limits <br />RPD RPD <br />Limit <br />Surrogate Recovery <br />2-Fluorophenol 1.23 1.26 1.25 98 101 70-130 2.19 30 <br />Phenol-d5 1.20 1.22 1.25 96 97 70-130 1.21 30 <br />Nitrobenzene-d5 1.10 1.10 1.25 88 88 60-130 0.106 30 <br />2-Fluorobiphenyl 1.09 1.14 1.25 87 91 60-130 4.95 30 <br />2,4,6-Tribromophenol 0.986 0.982 1.25 79 79 30-130 0.439 30 <br />4-Terphenyl-d14 1.22 1.21 1.25 98 97 40-130 0.569 30 <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 56 of 68