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./—*\ McCampbell Analytical, Inc. cue, \ "When Quality Counts" <br /> <br />1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 <br />http://www.mccarnpbell.com / E-mail: main@mccarnpbell.com <br /> <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: 5W5030B <br />Analytical Method: SW8260B <br />Unit: mg/kg <br />Sample ID: MB/LCS/LCSD-249554 <br />QC Summary Report for SW8260B <br />Analyte MB MDL RL <br />Result <br />SPK <br />Val <br />MB SS <br />%REC <br />MB SS <br />Limits <br />Surrogate Recovery <br />Dibromofluoromethane 0.11 0.125 91 70-140 <br />Toluene-d8 0.14 0.125 109 70-140 <br />4-BFB 0.011 0.0125 86 70-140 <br />Benzene-d6 0.11 0.1 113 70-140 <br />Ethylbenzene-d10 0.11 0.1 106 70-140 <br />1,2-DCB-d4 0.076 0.1 76 70-140 <br />(Cont.) <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 17 of 29