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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 Forward Unit <br />Drew Feucht <br />Reported:12/14/2023 18:58 <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: B177611 Used client sample: N <br />Bicarbonate DUP 757.18 1.5 10745.682321754-04 mg/L 1 <br />Carbonate DUP ND 10ND2321754-04 mg/L 1 <br />QC Batch ID: B178556 Used client sample: N <br />Chloride DUP 67.143 0.1 1067.1802321749-01 mg/L 2 <br />MS 118.39 80 - 12067.180 50.505 1012321749-01 mg/L 3 <br />MSD 118.26 0.1 10 80 - 12067.180 50.505 1012321749-01 mg/L 4 <br />Nitrate as N DUP 14.173 0.1 1014.1642321749-01 mg/L 2 <br />MS 18.968 80 - 12014.164 5.0505 95.12321749-01 mg/L 3 <br />MSD 18.975 0.0 10 80 - 12014.164 5.0505 95.32321749-01 mg/L 4 <br />Sulfate DUP 27.097 0.1 1027.1302321749-01 mg/L 2 <br />MS 133.95 80 - 12027.130 101.01 1062321749-01 mg/L 3 <br />MSD 133.79 0.1 10 80 - 12027.130 101.01 1062321749-01 mg/L 4 <br />QC Batch ID: B178599 Used client sample: N <br />Dissolved Sulfide DUP ND 10ND2321541-02 mg/L 5 <br />MS 0.48056 80 - 120ND0.50000 96.12321541-02 mg/L 6 <br />MSD 0.48460 0.8 10 80 - 120ND0.50000 96.92321541-02 mg/L 7 <br />QC Batch ID: B178641 Used client sample: N <br />Dissolved Calcium DUP 193.07 0.8 20194.662321728-01 mg/L 8 <br />MS 202.47 75 - 125194.66 10.204 76.52321728-01 mg/L 9 <br />MSD 206.50 2.0 20 75 - 125194.66 10.204 1162321728-01 mg/L 10 <br />Dissolved Magnesium DUP 59.490 0.0 2059.5142321728-01 mg/L 8 <br />MS 70.904 75 - 12559.514 10.204 1122321728-01 mg/L 9 <br />MSD 71.381 0.7 20 75 - 12559.514 10.204 1162321728-01 mg/L 10 <br />Dissolved Sodium DUP 313.01 1.5 20317.892321728-01 mg/L 8 <br />MS 315.99 75 - 125317.89 10.204 -18.6 A032321728-01 mg/L 9 <br />MSD 319.16 1.0 20 75 - 125317.89 10.204 12.4 A032321728-01 mg/L 10 <br />Dissolved Potassium DUP 9.0358 1.2 208.92712321728-01 mg/L 8 <br />MS 19.934 75 - 1258.9271 10.204 1082321728-01 mg/L 9 <br />MSD 20.358 2.1 20 75 - 1258.9271 10.204 1122321728-01 mg/L 10 <br />QC Batch ID: B178922 Used client sample: Y - Description: D-01N, 11/16/2023 11:39 <br />Total Dissolved Solids @ 180 C DUP 5100.0 2.0 105000.02321755-01 mg/L 11 <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 18 of 36Report ID: 1001476303