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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:ACTEnviro <br />Project:Ukhan-524425; Khan Property <br />Date Analyzed:07/10/2024 - 07/11/2024 <br />Date Prepared:07/09/2024 <br />WorkOrder:2407453 <br />BatchID:297267 <br />Analytical Method:SW8021B/8015Bm <br />Unit:mg/Kg <br />Sample ID:MB/LCS/LCSD-297267 <br />Instrument:GC19 <br />Matrix:Soil <br />Extraction Method:SW5035 <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 0.48 1.0 --- <br />MTBE ND 0.0025 0.050 --- <br />Benzene ND 0.0014 0.0050 --- <br />Toluene ND 0.0021 0.0050 --- <br />Ethylbenzene ND 0.00093 0.0050 --- <br />m,p-Xylene ND 0.0024 0.010 --- <br />o-Xylene ND 0.00090 0.0050 --- <br />Surrogate Recovery <br />2-Fluorotoluene 0.091 0.1 91 75-120 <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)0.48 0.48 0.60 79 80 75-120 0.0288 20 <br />MTBE 0.088 0.087 0.10 88 87 65-120 1.87 20 <br />Benzene 0.089 0.086 0.10 89 86 75-120 3.17 20 <br />Toluene 0.094 0.092 0.10 94 92 80-120 2.24 20 <br />Ethylbenzene 0.096 0.093 0.10 96 93 80-120 2.81 20 <br />m,p-Xylene 0.19 0.19 0.20 96 93 75-120 2.48 20 <br />o-Xylene 0.096 0.095 0.10 96 95 75-120 1.46 20 <br />Surrogate Recovery <br />2-Fluorotoluene 0.093 0.091 0.10 93 91 75-120 2.19 20 <br />CA ELAP 1644 • NELAP 4033ORELAP <br />Page 26 of 32