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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 />4Q23 Austin Unit <br />Drew Feucht <br />Reported:11/30/2023 11:54 <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 />Water Analysis (General Chemistry) <br />Source Lab <br />R# <br />QC Batch ID: B177575 Used client sample: N <br />Bicarbonate DUP 274.34 1.5 10278.422321108-01RE1 mg/L 1 <br />Carbonate DUP ND 10ND2321108-01RE1 mg/L 1 <br />QC Batch ID: B177576 Used client sample: Y - Description: AMW-1, 11/07/2023 13:28 <br />Bicarbonate DUP 472.08 0.6 10469.112321132-05 mg/L 2 <br />Carbonate DUP ND 10ND2321132-05 mg/L 2 <br />QC Batch ID: B177577 Used client sample: Y - Description: AMW-49, 11/07/2023 15:20 <br />Bicarbonate DUP 204.60 0.8 10202.922321132-15 mg/L 3 <br />Carbonate DUP ND 10ND2321132-15 mg/L 3 <br />QC Batch ID: B177945 Used client sample: N <br />Dissolved Sulfide DUP ND 10ND2320935-01 mg/L 4 <br />MS 0.48293 80 - 120ND0.50000 96.62320935-01 mg/L 5 <br />MSD 0.49218 1.9 10 80 - 120ND0.50000 98.42320935-01 mg/L 6 <br />QC Batch ID: B177966 Used client sample: N <br />Chloride DUP 2.4390 5.0 102.56302321131-02 mg/L 7 <br />MS 51.235 80 - 1202.5630 50.505 96.42321131-02 mg/L 8 <br />MSD 50.840 0.8 10 80 - 1202.5630 50.505 95.62321131-02 mg/L 9 <br />Nitrate as N DUP 0.061000 5.0 100.058000 J2321131-02 mg/L 7 <br />MS 4.6919 80 - 1200.058000 5.0505 91.82321131-02 mg/L 8 <br />MSD 4.7222 0.6 10 80 - 1200.058000 5.0505 92.42321131-02 mg/L 9 <br />Sulfate DUP 0.37100 25.6 100.48000 J,A022321131-02 mg/L 7 <br />MS 93.544 80 - 1200.48000 101.01 92.12321131-02 mg/L 8 <br />MSD 93.956 0.4 10 80 - 1200.48000 101.01 92.52321131-02 mg/L 9 <br />QC Batch ID: B177967 Used client sample: Y - Description: AMW-6, 11/07/2023 15:12 <br />Chloride DUP 33.210 0.5 1033.3642321132-07 mg/L 10 <br />MS 90.113 80 - 12033.364 50.505 1122321132-07 mg/L 11 <br />MSD 90.379 0.3 10 80 - 12033.364 50.505 1132321132-07 mg/L 12 <br />Nitrate as N DUP 3.4310 1.2 103.47402321132-07 mg/L 10 <br />MS 8.7101 80 - 1203.4740 5.0505 1042321132-07 mg/L 11 <br />MSD 8.7434 0.4 10 80 - 1203.4740 5.0505 1042321132-07 mg/L 12 <br />Sulfate DUP 28.522 0.3 1028.6132321132-07 mg/L 10 <br />MS 137.16 80 - 12028.613 101.01 1072321132-07 mg/L 11 <br />MSD 137.33 0.1 10 80 - 12028.613 101.01 1082321132-07 mg/L 12 <br />QC Batch ID: B178006 Used client sample: N <br />Dissolved Calcium DUP 109.56 0.7 20108.842320935-01 mg/L 13 <br />MS 114.70 75 - 125108.84 10.204 57.5 A032320935-01 mg/L 14 <br />MSD 111.22 3.1 20 75 - 125108.84 10.204 23.4 A032320935-01 mg/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 111 of 158Report ID: 1001472825