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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:10/01/2022 <br />Date Prepared:10/01/2022 <br />WorkOrder:2209F28 <br />BatchID:255270 <br />Analytical Method:SW8260B <br />Unit:µg/L <br />Sample ID:MB/LCS/LCSD-255270 <br />Instrument:GC18 <br />Matrix:Water <br />Extraction Method:SW5030B <br />QC Summary Report for SW8260B <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 />Surrogate Recovery <br />Dibromofluoromethane 26 26 25 103 105 70-130 1.97 20 <br />Toluene-d8 23 23 25 93 93 70-130 0.514 20 <br />4-BFB 2.0 2.0 2.5 80 80 70-130 0.119 20 <br />CA ELAP 1644 • NELAP 4033ORELAP <br />Page 39 of 47