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ENERGY ty Trust our People.Trust our Data. Billings,MT 800.735.4489•Casper,WY 888.235.0515 <br /> LABORATORIES �'r'.v'r�.energylah.com Gillette,WY 866.686.7175•Helena,MT 871.472.0111 <br /> QA/QC Summary Report <br /> Prepared by Billings, MT Branch <br /> Client: Colorado Analytical Laboratories Inc Report Date: 09/21/18 <br /> Project: 180911125 Mill Iron 2354-01 Work Order: C18090398 <br /> Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> I <br /> Method: E625.1 Batch: 125436 <br /> Lab ID: 818091137-001CMS Sample Matrix Spike Run:SV5973N.1_180917A 09/17/18 18:24 <br /> Isophorone 46.4 ug/L 10 46 42 102 <br /> n-Nitrosodimethylamine 27.3 ug/L 10 27 20 45 <br /> n-Nitroso-di-n-propylamine 51.4 ug/L 10 51 49 98 <br /> n-Nitrosodiphenylamine 41.8 ug/L 10 42 61 108 S <br /> 2-Nitrophenol 47.9 ug/L 10 48 51 96 S <br /> 4-Nitrophenol 18.8 ug/L 50 19 15 36 <br /> Naphthalene 44.4 ug/L 10 44 48 96 S <br /> Nitrobenzene 43.6 ug/L 10 44 51 91 S <br /> Pentachlorophenol 54.5 ug/L 50 55 53 109 <br /> Phenanthrene 25.7 ug/L 10 26 58 104 S <br /> Phenol 46.1 ug/L 10 31 27 45 <br /> Pyrene 19.1 ug/L 10 19 64 108 S <br /> 1,2,4-Trichlorobenzene 37.7 ug/L 10 38 36 78 <br /> 2,4,6-Trichlorophenol 44.2 ug/L 10 44 47 99 S <br /> Surr:2-Fluorobiphenyl 10 31 14 128 <br /> Surr:2-Fluorophenol 10 29 21 86 <br /> Surr:Nitrobenzene-d5 10 48 27 126 <br /> Surr:Phenol-d5 10 28 16 68 <br /> Surr:Terphenyl-d14 10 40 24 148 <br /> Surr:2,4,6-Tribromophenol 10 40 43 122 S <br /> -Lower than normal spike recoveries appear to be due to the sample matrix. Recoveries were normal in the associated Laboratory Control Sample(LCS). <br /> Qualifiers: <br /> RL-Analyte reporting limit. ND-Not detected at the reporting limit. <br /> S-Spike recovery outside of advisory limits. <br /> Page 9 of 14 <br />