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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: B171444 Used client sample: N <br />Dissolved Arsenic DUP 1.0600 33.0 200.76000 J,A022314984-02 ug/L 1 <br />MS 106.41 70 - 1300.76000 102.04 1042314984-02 ug/L 2 <br />MSD 105.28 1.1 20 70 - 1300.76000 102.04 1022314984-02 ug/L 3 <br />QC Batch ID: B171452 Used client sample: N <br />Hexavalent Chromium DUP 1.0957 1.3 101.11012315042-01 ug/L 4 <br />MS 19.775 90 - 1101.1101 20.202 92.42315042-01 ug/L 5 <br />MSD 19.783 0.0 10 90 - 1101.1101 20.202 92.42315042-01 ug/L 6 <br />QC Batch ID: B171740 Used client sample: N <br />Total Arsenic DUP ND 20ND2315221-06 ug/L 7 <br />MS 202.15 75 - 125ND200.00 1012315221-06 ug/L 8 <br />MSD 215.81 6.5 20 75 - 125ND200.00 1082315221-06 ug/L 9 <br />Total Iron DUP ND 20ND2315221-06 ug/L 7 <br />MS 1061.2 75 - 125ND1000.0 1062315221-06 ug/L 8 <br />MSD 1152.3 8.2 20 75 - 125ND1000.0 1152315221-06 ug/L 9 <br />Total Manganese DUP ND 20ND2315221-06 ug/L 7 <br />MS 534.38 75 - 125ND500.00 1072315221-06 ug/L 8 <br />MSD 562.88 5.2 20 75 - 125ND500.00 1132315221-06 ug/L 9 <br />QC Batch ID: B172104 Used client sample: N <br />Dissolved Mercury DUP 3.6750 2.7 203.77502315037-16 ug/L 10 <br />MS 4.5000 70 - 1303.7750 1.0000 72.5 A032315037-16 ug/L 11 <br />MSD 4.0500 10.5 20 70 - 1303.7750 1.0000 27.5 A032315037-16 ug/L 12 <br />QC Batch ID: B172390 Used client sample: N <br />Dissolved Aluminum DUP ND 20ND2315136-04 ug/L 13 <br />MS 1070.1 75 - 125ND1020.4 1052315136-04 ug/L 14 <br />MSD 1052.0 1.7 20 75 - 125ND1020.4 1032315136-04 ug/L 15 <br />Dissolved Antimony DUP 39.216 1.5 2038.650 J2315136-04 ug/L 13 <br />MS 376.23 75 - 12538.650 408.16 82.72315136-04 ug/L 14 <br />MSD 387.46 2.9 20 75 - 12538.650 408.16 85.52315136-04 ug/L 15 <br />Dissolved Barium DUP 83.923 16.0 2098.5152315136-04 ug/L 13 <br />MS 475.15 75 - 12598.515 408.16 92.32315136-04 ug/L 14 <br />MSD 499.41 5.0 20 75 - 12598.515 408.16 98.22315136-04 ug/L 15 <br />Dissolved Beryllium DUP ND 20ND2315136-04 ug/L 13 <br />MS 222.58 75 - 125ND204.08 1092315136-04 ug/L 14 <br />MSD 222.64 0.0 20 75 - 125ND204.08 1092315136-04 ug/L 15 <br />Dissolved Cadmium DUP ND 20ND2315136-04 ug/L 13 <br />MS 224.16 75 - 125ND204.08 1102315136-04 ug/L 14 <br />MSD 220.23 1.8 20 75 - 125ND204.08 1082315136-04 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 56 of 59Report ID: 1001456984