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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 />1Q24 Austin Unit <br />Ari Terry <br />Reported:01/31/2024 12:18 <br />Quality Control Report - Laboratory Control Sample <br />Constituent <br />Control Limits <br />PercentPercentSpike <br />QC Sample ID Type Result Level Units Recovery RPD Recovery RPD Quals <br />Water Analysis (General Chemistry) <br />Run # <br />Lab <br />QC Batch ID: B182363 <br />Chloride B182363-BS1 LCS 54.373 50.000 109 90 - 110mg/L 1 <br />Nitrate as N B182363-BS1 LCS 5.3497 5.0000 107 90 - 110mg/L 1 <br />Sulfate B182363-BS1 LCS 109.25 100.00 109 90 - 110mg/L 1 <br />QC Batch ID: B182676 <br />Total Dissolved Solids @ 180 C B182676-BS1 LCS 605.00 586.00 103 90 - 110mg/L 2 <br />QC Batch ID: B182700 <br />Dissolved Calcium B182700-BS1 LCS 10.093 10.000 101 80 - 120mg/L 3 <br />LCSDB182700-BSD1 9.9090 10.000 99.1 1.8 80 - 120 20mg/L 4 <br />Dissolved Magnesium B182700-BS1 LCS 10.540 10.000 105 80 - 120mg/L 3 <br />LCSDB182700-BSD1 10.450 10.000 104 0.9 80 - 120 20mg/L 4 <br />Dissolved Sodium B182700-BS1 LCS 9.4255 10.000 94.3 80 - 120mg/L 3 <br />LCSDB182700-BSD1 9.3675 10.000 93.7 0.6 80 - 120 20mg/L 4 <br />Dissolved Potassium B182700-BS1 LCS 9.2863 10.000 92.9 80 - 120mg/L 3 <br />LCSDB182700-BSD1 9.2814 10.000 92.8 0.1 80 - 120 20mg/L 4 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B182363-BS1 LCS EPA-300.0 RC1 IC9 101/19/24 01/19/24 23:41 <br /> 2 B182676-BS1 LCS EPA-160.1 IJC MANUAL 501/25/24 01/25/24 16:00 <br /> 3 B182700-BS1 LCS EPA-6010B MG2 PE-OP4 101/25/24 01/30/24 21:49 <br /> 4 B182700-BSD1 LCSD EPA-6010B MG2 PE-OP4 101/25/24 01/30/24 21:51 <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 41 of 47Report ID: 1001486470