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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: main@mecampbell.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: SW5030B <br />Analytical Method: 5W8260B <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 />VoREC <br />LCSD <br />VoREC <br />LCS/LCSD <br />Limits <br />RPD RPD <br />Limit <br />Acetone 0.56 0.48 0.40 139 120 60-140 14.6 30 <br />tert-Amyl methyl ether (TAME) 0.016 0.013 0.020 81 67 50-140 18.8 30 <br />Benzene 0.020 0.016 0.020 99 81 60-140 20.9 30 <br />Bromobenzene 0.019 0.016 0.020 96 81 60-140 17.1 30 <br />Bromochloromethane 0.019 0.016 0.020 95 81 60-140 15.9 30 <br />Bromodichloromethane 0.017 0.014 0.020 85 70 60-140 19.6 30 <br />Bromoform 0.012 0.011 0.020 62 56 40-140 9.97 30 <br />Bromomethane 0.036 0.027 0.020 180,F2 134 30-140 29.1 30 <br />2-Butanone (MEK) 0.076 0.064 0.080 95 80 50-140 17.2 30 <br />t-Butyl alcohol (TBA) 0.082 0.069 0.080 102 86 50-140 17.2 30 <br />n-Butyl benzene 0.036 0.024 0.020 178,F2 121 60-150 38.3,F2 30 <br />sec-Butyl benzene 0.029 0.023 0.020 147 113 60-150 26.0 30 <br />tert-Butyl benzene 0.026 0.021 0.020 128 103 60-140 2t1 30 <br />Carbon Disulfide 0.018 0.014 0.020 88 72 50-140 19.3 30 <br />Carbon Tetrachloride 0.019 0.015 0.020 94 77 60-140 19.8 30 <br />Chlorobenzene 0.019 0.016 0.020 94 82 60-140 14.3 30 <br />Chloroethane 0.026 0.017 0.020 130 85 50-140 41.4,F2 30 <br />Chloroform 0.020 0.016 0.020 100 81 60-140 20.9 30 <br />Chloromethane 0.017 0.013 0.020 83 64 20-140 25.9 30 <br />2-Chlorotoluene 0.024 0.019 0.020 118 97 60-140 19.3 30 <br />4-Chlorotoluene 0.023 0.019 0.020 114 94 60-140 19.1 30 <br />Dibromochloromethane 0.016 0.014 0.020 78 68 50-140 13.1 30 <br />1,2-Dibromo-3-chloropropane 0.0059 0.0052 0.0080 74 65 30-140 12.4 30 <br />1,2-Dibromoethane (EDB) 0.018 0.016 0.020 89 78 40-140 13.3 30 <br />Dibromomethane 0.017 0.015 0.020 87 76 60-140 13.0 30 <br />1,2-Dichlorobenzene 0.017 0.015 0.020 86 74 60-140 15.3 30 <br />1,3-Dichlorobenzene 0.022 0.018 0.020 108 88 60-140 20.2 30 <br />1,4-Dichlorobenzene 0.020 0.017 0.020 101 86 60-140 15.9 30 <br />Dichlorodifluoromethane 0.0067 0.0060 0.020 34 30 10-140 12.0 30 <br />1,1-Dichloroethane 0.020 0.016 0.020 101 81 60-140 21.6 30 <br />1,2-Dichloroethane (1,2-DCA) 0.017 0.014 0.020 85 71 60-140 18.1 30 <br />1,1-Dichloroethene 0.018 0.015 0.020 89 73 60-140 20.6 30 <br />cis-1,2-Dichloroethene 0.019 0.016 0.020 97 81 60-140 18.0 30 <br />trans-1,2-Dichloroethene 0.020 0.017 0.020 101 83 60-140 20.3 30 <br />1,2-Dichloropropane 0.019 0.016 0.020 97 79 60-140 20.8 30 <br />1,3-Dichloropropane 0.020 0.017 0.020 99 85 60-140 14.8 30 <br />2,2-Dichloropropane 0.020 0.016 0.020 97 80 60-140 20.2 30 <br />1,1-Dichloropropene 0.021 0.017 0.020 104 84 60-140 21.0 30 <br />(Cont.) <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 18 of 29