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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:7459; Sutter Street <br />Date Analyzed:10/02/2022 <br />Date Prepared:10/02/2022 <br />WorkOrder:2209F96 <br />BatchID:255263 <br />Analytical Method:SW8260B <br />Unit:µg/L <br />Sample ID:MB/LCS/LCSD-255263 <br />Instrument:GC45 <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 25 25 25 99 98 70-130 0.802 20 <br />Toluene-d8 26 26 25 103 103 70-130 0.434 20 <br />4-BFB 2.4 2.4 2.5 97 97 70-130 0.0314 20 <br />CA ELAP 1644 • NELAP 4033ORELAP <br />Page 40 of 49