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McCampbell Analytical, Inc. <br />"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: maingmccampbell.com <br /> <br />Quality Control Report <br />Client: US Ecology <br />Date Prepared: 08/12/2022 <br />Date Analyzed: 08/15/2022 <br />Instrument: GC11B <br />Matrix: Soil <br />Project: 180820; Alpine Helicopter <br />WorkOrder: 2208903 <br />BatchID: 251760 <br />Extraction Method: SW3550B <br />Analytical Method: 5W8015B <br />Unit: mg/Kg <br />Sample ID: MB/LCS/LCSD-251760 <br />QC Report for SW8015B w/out SG Clean-Up <br />Analyte MB MDL RL SPK MB SS MB SS <br />Result Val %REC Limits <br />TPH-Diesel (C10-C23) <br /> ND 0.78 2.0 <br />TPH-Motor Oil (C18-C36) ND 4.6 10 <br />Surrogate Recovery <br />C9 <br /> 25 25 100 70-130 <br />Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br />Result Result Val %REC %REC Limits Limit <br />TPH-Diesel (C10-C23) 43 43 40 106 108 70-130 1.07 20 <br />Surrogate Recovery <br />C9 23 23 25 92 92 70-130 0.133 20 <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 6 of 10