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d5 McCampbell Analytical, Inc. <br />"AO "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: US Ecology <br />Date Prepared: 08/12/2022 <br />Date Analyzed: 08/12/2022 - 08/13/2022 <br />Instrument: GC3 <br />Matrix: Soil <br />Project: 180820; Alpine Helicopter <br />WorkOrder: 2208903 <br />BatchID: 251761 <br />Extraction Method: SW5035 <br />Analytical Method: SW8021B/8015Bm <br />Unit: mg/Kg <br />Sample ID: MB/LCS/LCSD-251761 <br />QC Summary Report for SW8021B/8015Bm <br />Analyte MB <br />Result <br />MDL RL SPK <br />Val <br />MB SS <br />%REC <br />MB SS <br />Limits <br />TPH(g) (C6-C12) ND 0.55 1.0 <br />MTBE ND 0.0026 0.050 <br />Benzene ND 0.0018 0.0050 <br />Toluene ND 0.0022 0.0050 <br />Ethylbenzene ND 0.0015 0.0050 <br />m,p-Xylene ND 0.0026 0.010 <br />o-Xylene ND 0.00098 0.0050 <br />Surrogate Recovery <br />2-Fluorotoluene 0.090 0.1 90 75-134 <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 />TPH(btex) 0.53 0.51 0.60 88 85 82-118 3.64 20 <br />MTBE 0.099 0.10 0.10 99 103 61-119 4.59 20 <br />Benzene 0.092 0.094 0.10 92 94 77-128 2.38 20 <br />Toluene 0.094 0.096 0.10 94 96 74-132 2.37 20 <br />Ethylbenzene 0.096 0.099 0.10 96 99 84-127 2.98 20 <br />m,p-Xylene 0.19 0.20 0.20 96 99 80-120 3.09 20 <br />o-Xylene 0.097 0.10 0.10 97 100 80-120 3.00 20 <br />Surrogate Recovery <br />2-Fluorotoluene 0.090 0.093 0.10 90 93 75-134 294 20 <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 5 of 10