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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:Condor Earth Technologies, Inc. <br />Project:7454; Suter St <br />Date Analyzed:09/27/2022 <br />Date Prepared:09/27/2022 <br />WorkOrder:2209F28 <br />BatchID:254894 <br />Analytical Method:SW8021B/8015Bm <br />Unit:µg/L <br />Sample ID:MB/LCS/LCSD-254894 <br />Instrument:GC12 <br />Matrix:Water <br />Extraction Method:SW5030B <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 16 50 --- <br />MTBE ND 0.42 1.0 --- <br />Benzene ND 0.15 0.50 --- <br />Toluene ND 0.13 0.50 --- <br />Ethylbenzene ND 0.092 0.50 --- <br />m,p-Xylene ND 0.12 1.0 --- <br />o-Xylene ND 0.081 0.50 --- <br />Surrogate Recovery <br />aaa-TFT 9.1 10 91 74-117 <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)69 60 60 114 100 78-116 13.2 20 <br />MTBE 10 10 10 102 100 72-122 1.55 20 <br />Benzene 10 10 10 104 104 81-123 0.185 20 <br />Toluene 11 10 10 109 101 83-129 7.35 20 <br />Ethylbenzene 10 10 10 104 101 88-126 2.74 20 <br />m,p-Xylene 21 20 20 103 100 80-120 2.70 20 <br />o-Xylene 10 9.9 10 101 99 80-120 2.18 20 <br />Surrogate Recovery <br />aaa-TFT 11 9.4 10 107 94 74-117 12.5 20 <br />CA ELAP 1644 • NELAP 4033ORELAP <br />Page 41 of 47