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ENYIRCNMENTA! BCIEHCEB <br />Arcadis- SLO Reported: 03/07/2023 11:54 <br />735 Tank Farm Rd, Suite 150 Project: Forward Landfill <br />San Luis Obispo, CA 93401 Project Number: 30110749.01 <br />Project Manager: Drew Feucht <br />Metals Analysis <br />Quality Control Report - Precision & Accuracy <br />Control Limits <br />Source Source Spike Percent Percent Lab <br />Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals R# <br />QC Batch ID: B159311 <br />Used client sample: N <br />Hexavalent Chromium <br />DUP <br />2302429-07 <br />1.3000 <br />1.2360 <br />ug/L <br />5.0 <br />10 <br />1 <br />MS <br />2302429-07 <br />1.3000 <br />20.494 <br />20.202 <br />ug/L <br />95.0 <br />90-110 <br />2 <br />MSD <br />2302429-07 <br />1.3000 <br />19.691 <br />20.202 <br />ug/L <br />4.0 <br />91.0 <br />10 <br />90-110 <br />3 <br />QC Batch ID: B159358 <br />Used client sample: Y - Description: AMW-1, 02/03/2023 13:51 <br />Dissolved Aluminum <br />DUP <br />2302538-07 <br />39.371 <br />ND <br />ug/L <br />20 <br />4 <br />MS <br />2302538-07 <br />39.371 <br />1133.1 <br />1020.4 <br />ug/L <br />107 <br />75-125 <br />5 <br />MSD <br />2302538-07 <br />39.371 <br />1102.5 <br />1020.4 <br />ug/L <br />2.7 <br />104 <br />20 <br />75-125 <br />6 <br />Dissolved Antimony <br />DUP <br />2302538-07 <br />ND <br />ND <br />ug/L <br />20 <br />4 <br />MS <br />2302538-07 <br />ND <br />331.72 <br />408.16 <br />ug/L <br />81.3 <br />75-125 <br />5 <br />MSD <br />2302538-07 <br />ND <br />336.50 <br />408.16 <br />ug/L <br />1.4 <br />82.4 <br />20 <br />75-125 <br />6 <br />Dissolved Barium <br />DUP <br />2302538-07 <br />210.53 <br />213.86 <br />ug/L <br />1.6 <br />20 <br />4 <br />MS <br />2302538-07 <br />210.53 <br />690.95 <br />408.16 <br />ug/L <br />118 <br />75-125 <br />5 <br />MSD <br />2302538-07 <br />210.53 <br />683.13 <br />408.16 <br />ug/L <br />1.1 <br />116 <br />20 <br />75-125 <br />6 <br />Dissolved Beryllium <br />DUP <br />2302538-07 <br />1.1734 <br />1.4245 <br />ug/L <br />19.3 <br />20 <br />J 4 <br />MS <br />2302538-07 <br />1.1734 <br />225.04 <br />204.08 <br />ug/L <br />110 <br />75-125 <br />5 <br />MSD <br />2302538-07 <br />1.1734 <br />224.22 <br />204.08 <br />ug/L <br />0.4 <br />109 <br />20 <br />75-125 <br />6 <br />Dissolved Cadmium <br />DUP <br />2302538-07 <br />ND <br />ND <br />ug/L <br />20 <br />4 <br />MS <br />2302538-07 <br />ND <br />232.63 <br />204.08 <br />ug/L <br />114 <br />75-125 <br />5 <br />MSD <br />2302538-07 <br />ND <br />223.82 <br />204.08 <br />ug/L <br />3.9 <br />110 <br />20 <br />75-125 <br />6 <br />Dissolved Chromium <br />DUP <br />2302538-07 <br />ND <br />ND <br />ug/L <br />20 <br />4 <br />MS <br />2302538-07 <br />ND <br />215.99 <br />204.08 <br />ug/L <br />106 <br />75-125 <br />5 <br />MSD <br />2302538-07 <br />ND <br />211.84 <br />204.08 <br />ug/L <br />1.9 <br />104 <br />20 <br />75-125 <br />6 <br />Dissolved Cobalt <br />DUP <br />2302538-07 <br />ND <br />ND <br />ug/L <br />20 <br />4 <br />MS <br />2302538-07 <br />ND <br />218.34 <br />204.08 <br />ug/L <br />107 <br />75-125 <br />5 <br />MSD <br />2302538-07 <br />ND <br />211.36 <br />204.08 <br />ug/L <br />3.2 <br />104 <br />20 <br />75-125 <br />6 <br />Dissolved Copper <br />DUP <br />2302538-07 <br />4.7049 <br />4.9894 <br />ug/L <br />5.9 <br />20 <br />J 4 <br />MS <br />2302538-07 <br />4.7049 <br />422.04 <br />408.16 <br />ug/L <br />102 <br />75-125 <br />5 <br />MSD <br />2302538-07 <br />4.7049 <br />413.18 <br />408.16 <br />ug/L <br />2.1 <br />100 <br />20 <br />75-125 <br />6 <br />Dissolved Iron <br />DUP <br />2302538-07 <br />ND <br />ND <br />ug/L <br />20 <br />4 <br />MS <br />2302538-07 <br />ND <br />1149.7 <br />1020.4 <br />ug/L <br />113 <br />75-125 <br />5 <br />MSD <br />2302538-07 <br />ND <br />1143.8 <br />1020.4 <br />ug/L <br />0.5 <br />112 <br />20 <br />75-125 <br />6 <br />Dissolved Lead <br />DUP <br />2302538-07 <br />13.689 <br />14.645 <br />ug/L <br />6.7 <br />20 <br />J 4 <br />MS <br />2302538-07 <br />13.689 <br />467.11 <br />408.16 <br />ug/L <br />111 <br />75-125 <br />5 <br />MSD <br />2302538-07 <br />13.689 <br />450.86 <br />408.16 <br />ug/L <br />3.5 <br />107 <br />20 <br />75-125 <br />6 <br />Dissolved Manganese <br />DUP <br />2302538-07 <br />1207.6 <br />1210.7 <br />ug/L <br />0.3 <br />20 <br />7 <br />MS <br />2302538-07 <br />1207.6 <br />1757.7 <br />510.20 <br />ug/L <br />108 <br />75-125 <br />8 <br />MSD <br />2302538-07 <br />1207.6 <br />1747.2 <br />510.20 <br />ug/L <br />0.6 <br />106 <br />20 <br />75-125 <br />9 <br />The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. <br />All results listed in this report are for the exclusive use of the submitting party. Pace <br />Analytical assumes no responsibility for <br />report alteration, separation, <br />detachment <br />or third party interpretation. <br />Report ID: 1001403762 <br />4100 Atlas Court Bakersfield, CA 93308 <br />(661) 327-4911 <br />FAX (661) 327-1918 www.pacelabs.com <br />Page 72 of 78 <br />