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Arcadis- SLO <br />4119 Broad Street Suite 210 <br />San Luis Obispo, CA 93401 <br />Project: <br />Project Number: <br />Project Manager: <br />Forward Landfill-COELT <br />30216409.01 4Q24 Austin Unit <br />Ari Terry <br />Reported:12/04/2024 10:08 <br />Quality Control Report - Precision & Accuracy <br />Constituent Sample IDType Result Result Added Units RPD Recovery RPD Recovery Quals <br />Source Spike Percent Percent <br />Control Limits <br />Metals Analysis <br />Source Lab <br />R# <br />QC Batch ID: B201484 Used client sample: N <br />Dissolved Selenium DUP ND 20ND2418634-03 ug/L 1 <br />MS 222.96 75 - 125ND204.08 1092418634-03 ug/L 2 <br />MSD 228.98 2.7 20 75 - 125ND204.08 1122418634-03 ug/L 3 <br />Dissolved Silver DUP ND 20ND2418634-03 ug/L 1 <br />MS 99.388 75 - 125ND102.04 97.42418634-03 ug/L 2 <br />MSD 101.12 1.7 20 75 - 125ND102.04 99.12418634-03 ug/L 3 <br />Dissolved Strontium DUP 882.70 0.3 20879.702418634-03 ug/L 1 <br />MS 1396.0 75 - 125879.70 510.20 1012418634-03 ug/L 2 <br />MSD 1404.9 0.6 20 75 - 125879.70 510.20 1032418634-03 ug/L 3 <br />Dissolved Tin DUP ND 20ND2418634-03 ug/L 1 <br />MS 216.33 75 - 125ND204.08 1062418634-03 ug/L 2 <br />MSD 221.94 2.6 20 75 - 125ND204.08 1092418634-03 ug/L 3 <br />Dissolved Vanadium DUP 7.6000 1.3 207.7000 J2418634-03 ug/L 1 <br />MS 219.80 75 - 1257.7000 204.08 1042418634-03 ug/L 2 <br />MSD 223.88 1.8 20 75 - 1257.7000 204.08 1062418634-03 ug/L 3 <br />Dissolved Zinc DUP 64.000 0.3 2063.8002418634-03 ug/L 1 <br />MS 607.24 75 - 12563.800 510.20 1072418634-03 ug/L 2 <br />MSD 619.90 2.1 20 75 - 12563.800 510.20 1092418634-03 ug/L 3 <br />QC Batch ID: B201513 Used client sample: Y - Description: AMW-4, 11/19/2024 15:38 <br />Hexavalent Chromium DUP 0.45260 0.8 100.456202418678-07 ug/L 4 <br />MS 20.383 90 - 1100.45620 20.202 98.62418678-07 ug/L 5 <br />MSD 20.439 0.3 10 90 - 1100.45620 20.202 98.92418678-07 ug/L 6 <br />QC Batch ID: B201589 Used client sample: N <br />Dissolved Thallium DUP ND 20ND2418674-01 ug/L 7 <br />MS 36.284 70 - 130ND40.816 88.92418674-01 ug/L 8 <br />MSD 35.915 1.0 20 70 - 130ND40.816 88.02418674-01 ug/L 9 <br />QC Batch ID: B201767 Used client sample: Y - Description: AMW-4, 11/19/2024 15:38 <br />Dissolved Mercury DUP ND 20ND2418678-07 ug/L 10 <br />MS 0.97500 70 - 130ND1.0000 97.52418678-07 ug/L 11 <br />MSD 0.96500 1.0 20 70 - 130ND1.0000 96.52418678-07 ug/L 12 <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 Analytical assumes no responsibility for report alteration , separation, detachment or third party interpretation. <br />4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 69 of 71Report ID: 1001554839