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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:AdvancedGeo, Inc. <br />Project:SJ Cogen <br />Date Analyzed:06/29/2020 - 06/30/2020 <br />Date Prepared:06/29/2020 <br />WorkOrder:2006D41 <br />BatchID:200888 <br />Analytical Method:E200.8 <br />Unit:µg/L <br />Sample ID:MB/LCS/LCSD-200888 <br />2006D41-024AMS/MSD <br />Instrument:ICP-MS4 <br />Matrix:Water <br />Extraction Method:E200.8 <br />QC Report for Metals (>1% Sediment Content) <br />Analyte MB <br />Result <br />MDL RL SPK <br />Val <br />MB SS <br />%REC <br />MB SS <br />Limits <br />Lead ND 1.00 2.50 --- <br />Surrogate Recovery <br />Terbium 2540 2500 102 70-130 <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 />Lead 263 252 250 105 101 85-115 4.33 20 <br />Surrogate Recovery <br />Terbium 2510 2450 2500 100 98 70-130 2.24 20 <br />Analyte MS <br />Result <br />MSD <br />Result <br />SPK <br />Val <br />SPKRef <br />Val <br />MS <br />%REC <br />MSD <br />%REC <br />MS/MSD <br /> Limits <br />RPD RPD <br />Limit <br />MS <br />DF <br />Lead 279 283 250 17.03 105 106 85-115 1.58 201 <br />Surrogate Recovery <br />Terbium 2550 2580 25001 102 103 70-130 1.20 20 <br />Analyte DLT <br />Result <br />DLTRef <br />Val <br />%D %D <br />Limit <br />Lead 16.2 17.03 4.87 - <br />%D Control Limit applied to analytes with concentrations greater than 25 times the reporting limits. <br />Page 57 of 85