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Quality Control Report <br />McCampbell Analytical, Inc.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"When Quality Counts" <br />Client:Clean Harbors <br />Project:Turner Cut <br />Date Analyzed:03/01/2025 <br />Date Prepared:03/01/2025 <br />WorkOrder:2502J06 <br />BatchID:312478 <br />Analytical Method:SW8260D <br />Unit:µg/L <br />Sample ID:MB/LCS/LCSD-312478 <br />Instrument:GC45 <br />Matrix:Water <br />Extraction Method:SW5030B <br />QC Summary Report for SW8260D <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 />Acetone 46 45 40 115 112 60-130 2.77 20 <br />tert-Amyl methyl ether (TAME)3.4 3.5 4 86 87 60-130 1.41 20 <br />Benzene 3.5 3.4 4 87 86 65-130 1.30 20 <br />Bromobenzene 3.7 3.7 4 93 92 60-130 0.960 20 <br />Bromochloromethane 3.6 3.5 4 90 87 65-130 4.38 20 <br />Bromodichloromethane 4.0 4.0 4 101 100 60-130 0.951 20 <br />Bromoform 3.6 3.6 4 90 91 70-130 1.41 20 <br />Bromomethane 3.5 3.4 4 86 85 50-130 1.28 20 <br />2-Butanone (MEK)16 16 16 103 103 60-130 0.0722 20 <br />t-Butyl alcohol (TBA)15 14 16 91 88 50-130 3.55 20 <br />n-Butyl benzene 4.1 3.9 4 103 97 60-130 5.60 20 <br />sec-Butyl benzene 3.9 3.8 4 97 96 60-130 1.53 20 <br />tert-Butyl benzene 3.6 3.6 4 89 90 60-130 0.236 20 <br />Carbon Disulfide 3.6 3.6 4 91 90 60-130 0.888 20 <br />Carbon Tetrachloride 3.7 3.7 4 92 92 70-130 0.721 20 <br />Chlorobenzene 3.8 3.7 4 94 93 65-130 1.31 20 <br />Chloroethane 3.7 3.7 4 92 91 60-140 0.856 20 <br />Chloroform 3.9 3.8 4 97 95 70-130 1.68 20 <br />Chloromethane 3.9 3.8 4 98 95 50-130 2.89 20 <br />2-Chlorotoluene 3.7 3.6 4 93 90 60-130 3.23 20 <br />4-Chlorotoluene 3.7 3.8 4 93 94 60-130 0.527 20 <br />Dibromochloromethane 3.6 3.6 4 91 90 70-130 0.997 20 <br />1,2-Dibromo-3-chloropropane 1.9 1.9 2 97 97 50-130 0.0848 20 <br />1,2-Dibromoethane (EDB)2.0 2.0 2 99 98 60-130 1.22 20 <br />Dibromomethane 3.8 3.7 4 95 93 60-130 1.35 20 <br />1,2-Dichlorobenzene 3.6 3.5 4 90 88 65-130 1.97 20 <br />1,3-Dichlorobenzene 3.7 3.6 4 93 91 70-130 2.81 20 <br />1,4-Dichlorobenzene 3.8 3.7 4 94 93 65-130 0.645 20 <br />Dichlorodifluoromethane 2.4 2.3 4 59 57 40-140 2.92 20 <br />1,1-Dichloroethane 3.9 3.9 4 97 97 70-130 0.260 20 <br />1,2-Dichloroethane (1,2-DCA)3.9 3.9 4 98 97 70-130 0.798 20 <br />1,1-Dichloroethene 3.4 3.3 4 84 83 60-130 1.04 20 <br />cis-1,2-Dichloroethene 3.6 3.5 4 90 88 60-130 2.15 20 <br />trans-1,2-Dichloroethene 3.5 3.5 4 87 87 70-130 0.383 20 <br />1,2-Dichloropropane 3.9 3.9 4 98 98 60-130 0.654 20 <br />1,3-Dichloropropane 3.8 3.8 4 95 94 60-130 1.04 20 <br />2,2-Dichloropropane 4.0 3.9 4 99 97 60-130 2.26 20 <br />1,1-Dichloropropene 3.8 3.8 4 96 95 60-130 1.06 20 <br />CA ELAP 1644 • NELAP 4033ORELAP <br />(Cont.) <br />Page 22 of 34