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ENYIRCNMENTA! BCIEHCEB <br />Arcadis- SLO Reported: <br />02/27/2023 9:56 <br />735 Tank Farm Rd, Suite 150 Project: <br />Forward Landfill <br />San Luis Obispo, CA 93401 Project Number: <br />30110749.01 <br />Project Manager: <br />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: 8159262 <br />Used client sample: N <br />Dissolved Chromium <br />DUP <br />2302270-01 <br />ND <br />ND <br />ug/L <br />20 <br />10 <br />MS <br />2302270-01 <br />ND <br />221.23 <br />204.08 <br />ug/L <br />108 <br />75-125 <br />11 <br />MSD <br />2302270-01 <br />ND <br />219.40 <br />204.08 <br />ug/L <br />0.8 <br />108 <br />20 <br />75-125 <br />12 <br />Dissolved Cobalt <br />DUP <br />2302270-01 <br />ND <br />ND <br />ug/L <br />20 <br />10 <br />MS <br />2302270-01 <br />ND <br />227.57 <br />204.08 <br />ug/L <br />112 <br />75-125 <br />11 <br />MSD <br />2302270-01 <br />ND <br />216.95 <br />204.08 <br />ug/L <br />4.8 <br />106 <br />20 <br />75-125 <br />12 <br />Dissolved Copper <br />DUp <br />2302270-01 <br />2.0006 <br />2.4498 <br />ug/L <br />20.2 <br />20 <br />J,A02 <br />10 <br />MS <br />2302270-01 <br />2.0006 <br />432.73 <br />408.16 <br />ug/L <br />106 <br />75-125 <br />11 <br />MSD <br />2302270-01 <br />2.0006 <br />433.43 <br />408.16 <br />ug/L <br />0.2 <br />106 <br />20 <br />75-125 <br />12 <br />Dissolved Iron <br />DUP <br />2302270-01 <br />ND <br />ND <br />ug/L <br />20 <br />10 <br />MS <br />2302270-01 <br />ND <br />1157.1 <br />1020.4 <br />ug/L <br />113 <br />75-125 <br />11 <br />MSD <br />2302270-01 <br />ND <br />1161.4 <br />1020.4 <br />ug/L <br />0.4 <br />114 <br />20 <br />75-125 <br />12 <br />Dissolved Lead <br />DUp <br />2302270-01 <br />8.4517 <br />12.098 <br />ug/L <br />35.5 <br />20 <br />J,A02 <br />10 <br />MS <br />2302270-01 <br />8.4517 <br />483.88 <br />408.16 <br />ug/L <br />116 <br />75-125 <br />11 <br />MSD <br />2302270-01 <br />8.4517 <br />461.08 <br />408.16 <br />ug/L <br />4.8 <br />111 <br />20 <br />75-125 <br />12 <br />Dissolved Manganese <br />DUP <br />2302270-01 <br />ND <br />ND <br />ug/L <br />20 <br />10 <br />MS <br />2302270-01 <br />ND <br />585.41 <br />510.20 <br />ug/L <br />115 <br />75-125 <br />11 <br />MSD <br />2302270-01 <br />ND <br />580.43 <br />510.20 <br />ug/L <br />0.9 <br />114 <br />20 <br />75-125 <br />12 <br />Dissolved Nickel <br />DUP <br />2302270-01 <br />ND <br />2.5242 <br />ug/L <br />20 <br />J <br />10 <br />MS <br />2302270-01 <br />ND <br />495.01 <br />408.16 <br />ug/L <br />121 <br />75-125 <br />11 <br />MSD <br />2302270-01 <br />ND <br />473.77 <br />408.16 <br />ug/L <br />4.4 <br />116 <br />20 <br />75-125 <br />12 <br />Dissolved Silver <br />DUP <br />2302270-01 <br />ND <br />ND <br />ug/L <br />20 <br />13 <br />MS <br />2302270-01 <br />ND <br />103.13 <br />102.04 <br />ug/L <br />101 <br />75-125 <br />14 <br />Dissolved Strontium <br />DUP <br />2302270-01 <br />392.13 <br />391.60 <br />ug/L <br />0.1 <br />20 <br />10 <br />MS <br />2302270-01 <br />392.13 <br />1013.2 <br />510.20 <br />ug/L <br />122 <br />75-125 <br />11 <br />MSD <br />2302270-01 <br />392.13 <br />990.35 <br />510.20 <br />ug/L <br />2.3 <br />117 <br />20 <br />75-125 <br />12 <br />Dissolved Vanadium <br />DUP <br />2302270-01 <br />3.6096 <br />3.5828 <br />ug/L <br />0.7 <br />20 <br />J <br />10 <br />MS <br />2302270-01 <br />3.6096 <br />220.41 <br />204.08 <br />ug/L <br />106 <br />75-125 <br />11 <br />MSD <br />2302270-01 <br />3.6096 <br />219.88 <br />204.08 <br />ug/L <br />0.2 <br />106 <br />20 <br />75-125 <br />12 <br />Dissolved Zinc <br />DUP <br />2302270-01 <br />ND <br />ND <br />ug/L <br />20 <br />10 <br />MS <br />2302270-01 <br />ND <br />613.82 <br />510.20 <br />ug/L <br />120 <br />75-125 <br />11 <br />MSD <br />2302270-01 <br />ND <br />588.14 <br />510.20 <br />ug/L <br />4.3 <br />115 <br />20 <br />75-125 <br />12 <br />QC Batch ID: 13159309 <br />Used client sample: <br />N <br />Hexavalent Chromium <br />DUP <br />2302279-04 <br />0.25600 <br />0.21000 <br />ug/L <br />19.7 <br />10 <br />A02 <br />15 <br />MS <br />2302279-04 <br />0.25600 <br />19.234 <br />20.202 <br />ug/L <br />93.9 <br />90-110 <br />16 <br />MSD <br />2302279-04 <br />0.25600 <br />21.182 <br />20.202 <br />ug/L <br />9.6 <br />104 <br />10 <br />90-110 <br />17 <br />QC Batch ID: B159375 <br />Used client sample: <br />N <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: 1001401191 <br />4100 Atlas Court Bakersfield, <br />CA 93308 <br />(661) 327-4911 <br />FAX (661) 327-1918 <br />www.pacelabs.com <br />Page 80 of 82 <br />