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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 <br />Austin Unit <br />Drew Feucht <br />Reported:09/19/2023 15:16 <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: B172390 Used client sample: N <br />Dissolved Chromium DUP 7.3759 0.5 207.4099 J2315136-04 ug/L 13 <br />MS 232.80 75 - 1257.4099 204.08 1102315136-04 ug/L 14 <br />MSD 230.39 1.0 20 75 - 1257.4099 204.08 1092315136-04 ug/L 15 <br />Dissolved Cobalt DUP ND 20ND2315136-04 ug/L 13 <br />MS 215.03 75 - 125ND204.08 1052315136-04 ug/L 14 <br />MSD 211.48 1.7 20 75 - 125ND204.08 1042315136-04 ug/L 15 <br />Dissolved Copper DUP 1.3497 11.6 201.5158 J2315136-04 ug/L 13 <br />MS 410.36 75 - 1251.5158 408.16 1002315136-04 ug/L 14 <br />MSD 411.60 0.3 20 75 - 1251.5158 408.16 1002315136-04 ug/L 15 <br />Dissolved Iron DUP ND 20ND2315136-04 ug/L 13 <br />MS 1022.4 75 - 125ND1020.4 1002315136-04 ug/L 14 <br />MSD 1036.7 1.4 20 75 - 125ND1020.4 1022315136-04 ug/L 15 <br />Dissolved Lead DUP ND 20ND2315136-04 ug/L 13 <br />MS 445.96 75 - 125ND408.16 1092315136-04 ug/L 14 <br />MSD 436.16 2.2 20 75 - 125ND408.16 1072315136-04 ug/L 15 <br />Dissolved Manganese DUP ND 20ND2315136-04 ug/L 13 <br />MS 551.82 75 - 125ND510.20 1082315136-04 ug/L 14 <br />MSD 552.31 0.1 20 75 - 125ND510.20 1082315136-04 ug/L 15 <br />Dissolved Nickel DUP ND 20ND2315136-04 ug/L 13 <br />MS 459.95 75 - 125ND408.16 1132315136-04 ug/L 14 <br />MSD 455.75 0.9 20 75 - 125ND408.16 1122315136-04 ug/L 15 <br />Dissolved Selenium DUP 87.634 22.9 20110.29 J,A022315136-04 ug/L 13 <br />MS 326.18 75 - 125110.29 204.08 1062315136-04 ug/L 14 <br />MSD 279.76 15.3 20 75 - 125110.29 204.08 83.02315136-04 ug/L 15 <br />Dissolved Silver DUP ND 20ND2315136-04 ug/L 13 <br />MS 108.29 75 - 125ND102.04 1062315136-04 ug/L 14 <br />MSD 94.340 13.8 20 75 - 125ND102.04 92.52315136-04 ug/L 15 <br />Dissolved Strontium DUP 375.96 1.1 20372.002315136-04 ug/L 13 <br />MS 877.99 75 - 125372.00 510.20 99.22315136-04 ug/L 14 <br />MSD 871.02 0.8 20 75 - 125372.00 510.20 97.82315136-04 ug/L 15 <br />Dissolved Tin DUP ND 20ND2315136-04 ug/L 13 <br />MS 222.49 75 - 125ND204.08 1092315136-04 ug/L 14 <br />MSD 223.03 0.2 20 75 - 125ND204.08 1092315136-04 ug/L 15 <br />Dissolved Thallium DUP 73.398 22.8 2058.378 J,A022315136-04 ug/L 13 <br />MS 519.14 75 - 12558.378 408.16 1132315136-04 ug/L 14 <br />MSD 488.82 6.0 20 75 - 12558.378 408.16 1052315136-04 ug/L 15 <br />Dissolved Vanadium DUP 6.7447 2.3 206.5944 J2315136-04 ug/L 13 <br />MS 214.87 75 - 1256.5944 204.08 1022315136-04 ug/L 14 <br />MSD 214.46 0.2 20 75 - 1256.5944 204.08 1022315136-04 ug/L 15 <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 57 of 59Report ID: 1001456984