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d-5 McCampbell Analytical, Inc. <br />W4i "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 />Quality Control Report <br />Client: <br />Date Prepared: <br />Date Analyzed: <br />Instrument: <br />Matrix: <br />Project: <br />US Ecology <br />07/14/2022 <br />07/14/2022 - 07/15/2022 <br />GC18, GC38 <br />Soil <br />180641; Alpine Helicopter <br />WorkOrder: 2207760 <br />BatchID: 249554 <br />Extraction Method: SW5030B <br />Analytical Method: SW8260B <br />Unit: mg/kg <br />Sample ID: MB/LCS/LCSD-249554 <br />QC Summary Report for SW8260B <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 />Dibromofluoromethane 0.12 0.11 0.12 93 89 70-140 4.91 30 <br />Toluene-d8 0.14 0.14 0.12 114 110 70-140 4.14 30 <br />4-BFB 0.011 0.011 0.012 92 87 70-140 5.25 30 <br />Benzene-d6 0.13 0.10 0.10 129 104 <br />101 <br />70-140 21.2 30 <br />Ethylbenzene-d10 0.12 0.10 0.10 118 70-140 15.6 30 <br />1,2-DCB-d4 0.089 0.075 0.10 89 75 70-140 16.4 30 <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 20 of 29