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�r <br />17dl icdl <br />ENVIRONMENTAL SCIENCES <br />Arcadis- SLO Reported: <br />02/06/2023 14:15 <br />735 Tank Farm Rd, Suite 150 Project: <br />Forward Landfill <br />San Luis Obispo, CA 93401 Project Number: <br />30110749.01 <br />Project Manager: <br />Drew Feucht <br />Water Analysis (General Chemistry) <br />Quality Control Report - Precision & Accuracy <br />Control Limits <br />Source Source Spike Percent Percent Lab <br />:onstituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals RI <br />QC Batch ID: B158272 Used client sample: Y -Description: AMW-32S, 01/26/2023 11:35 <br />Bicarbonate DUP 2301969-01 353.18 356.88 mg/L 1.0 10 1 <br />Carbonate DUP 2301969-01 ND ND mg/L 10 1 <br />QC Batch ID: B158811 <br />Used client sample: N <br />7.7434 7.6360 <br />mg/L 1.4 20 5 <br />MS 2301999-04 <br />7.7434 19.173 <br />10.204 mg/L 112 75-125 6 <br />MSD 2301999-04 <br />Chloride <br />DUP 2301965-01 185.09 <br />184.89 <br />Used client sample: <br />mg/L <br />0.1 <br />Total Dissolved Solids @ 180 C <br />10 <br />815.00 815.00 <br />2 <br />MS 2301965-01 185.09 <br />232.78 <br />50.505 <br />mg/L <br />94.4 <br />80-120 <br />3 <br />MSD 2301965-01 185.09 <br />232.43 <br />50.505 <br />mg/L <br />0.2 <br />93.7 <br />10 <br />80-120 <br />4 <br />Nitrate as N <br />DUP 2301965-01 0.098000 <br />0.092000 <br />mg/L <br />6.3 <br />10 <br />J 2 <br />MS 2301965-01 0.098000 <br />5.2152 <br />5.0505 <br />mg/L <br />101 <br />80-120 <br />3 <br />MSD 2301965-01 0.098000 <br />5.2596 <br />5.0505 <br />mg/L <br />0.8 <br />102 <br />10 <br />80-120 <br />4 <br />Sulfate <br />DUP 2301965-01 1.0570 <br />1.0470 <br />mg/L <br />1.0 <br />10 <br />2 <br />MS 2301965-01 1.0570 <br />109.67 <br />101.01 <br />mg/L <br />108 <br />80-120 <br />3 <br />MSD 2301965-01 1.0570 <br />109.91 <br />101.01 <br />mg/L <br />0.2 <br />108 <br />10 <br />80-120 <br />4 <br />QC Batch ID: B158856 <br />Used client sample: N <br />Dissolved Calcium <br />DUP 2301999-04 217.14 <br />210.47 <br />mg/L <br />3.1 <br />20 <br />5 <br />MS 2301999-04 217.14 <br />219.59 <br />10.204 <br />mg/L <br />24.0 <br />75-125 <br />A03 6 <br />MSD 2301999-04 217.14 <br />218.09 <br />10.204 <br />mg/L <br />0.7 <br />9.3 <br />20 <br />75-125 <br />A03 7 <br />Dissolved Magnesium <br />DUP 2301999-04 134.08 <br />132.59 <br />mg/L <br />1.1 <br />20 <br />5 <br />MS 2301999-04 134.08 <br />142.87 <br />10.204 <br />mg/L <br />86.1 <br />75-125 <br />6 <br />MSD 2301999-04 134.08 <br />140.97 <br />10.204 <br />mg/L <br />1.3 <br />67.5 <br />20 <br />75-125 <br />A03 7 <br />Dissolved Sodium <br />DUP 2301999-04 175.45 <br />171.66 <br />mg/L <br />2.2 <br />20 <br />5 <br />MS 2301999-04 175.45 <br />182.14 <br />10.204 <br />mg/L <br />65.6 <br />75-125 <br />A03 6 <br />MSD 2301999-04 175.45 <br />183.09 <br />10.204 <br />mg/L <br />0.5 <br />74.8 <br />20 <br />75-125 <br />A03 7 <br />Dissolved Potassium <br />DUP 2301999-04 <br />7.7434 7.6360 <br />mg/L 1.4 20 5 <br />MS 2301999-04 <br />7.7434 19.173 <br />10.204 mg/L 112 75-125 6 <br />MSD 2301999-04 <br />7.7434 18.938 <br />10.204 mg/L 1.2 110 20 75-125 7 <br />QC Batch ID: B158984 <br />Used client sample: <br />Y -Description: <br />AMW-32S, 01/26/2023 11:35 <br />Total Dissolved Solids @ 180 C <br />DUP 2301969-01 <br />815.00 815.00 <br />mg/L 0 10 8 <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 />Report ID: 1001395150 4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 36 of 41 <br />