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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 FWD Unit 30167676.01 <br />Ari Terry <br />Reported:02/19/2024 14:08 <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 />Metals Analysis <br />Run # <br />Lab <br />QC Batch ID: B183538 <br />Hexavalent Chromium B183538-BS1 LCS 18.322 20.000 91.6 90 - 110ug/L 1 <br />QC Batch ID: B183620 <br />Dissolved Mercury B183620-BS1 LCS 0.99000 1.0000 99.0 85 - 115ug/L 2 <br />QC Batch ID: B183621 <br />Dissolved Mercury B183621-BS1 LCS 0.97500 1.0000 97.5 85 - 115ug/L 3 <br />QC Batch ID: B183659 <br />Dissolved Aluminum B183659-BS1 LCS 978.10 1000.0 97.8 80 - 120ug/L 4 <br />Dissolved Antimony B183659-BS1 LCS 324.88 400.00 81.2 80 - 120ug/L 4 <br />Dissolved Arsenic B183659-BS1 LCS 194.46 200.00 97.2 80 - 120ug/L 4 <br />Dissolved Barium B183659-BS1 LCS 399.29 400.00 99.8 80 - 120ug/L 4 <br />Dissolved Beryllium B183659-BS1 LCS 197.67 200.00 98.8 80 - 120ug/L 4 <br />Dissolved Cadmium B183659-BS1 LCS 194.47 200.00 97.2 80 - 120ug/L 4 <br />Dissolved Chromium B183659-BS1 LCS 200.25 200.00 100 80 - 120ug/L 4 <br />Dissolved Cobalt B183659-BS1 LCS 206.31 200.00 103 80 - 120ug/L 4 <br />Dissolved Copper B183659-BS1 LCS 400.46 400.00 100 80 - 120ug/L 4 <br />Dissolved Iron B183659-BS1 LCS 985.88 1000.0 98.6 80 - 120ug/L 4 <br />Dissolved Lead B183659-BS1 LCS 426.06 400.00 107 80 - 120ug/L 4 <br />Dissolved Manganese B183659-BS1 LCS 490.07 500.00 98.0 80 - 120ug/L 4 <br />Dissolved Nickel B183659-BS1 LCS 423.59 400.00 106 80 - 120ug/L 4 <br />Dissolved Selenium B183659-BS1 LCS 200.99 200.00 100 80 - 120ug/L 4 <br />Dissolved Silver B183659-BS1 LCS 99.131 100.00 99.1 80 - 120ug/L 4 <br />Dissolved Strontium B183659-BS1 LCS 507.32 500.00 101 80 - 120ug/L 4 <br />Dissolved Tin B183659-BS1 LCS 230.48 200.00 115 80 - 120ug/L 4 <br />Dissolved Thallium B183659-BS1 LCS 450.61 400.00 113 80 - 120ug/L 4 <br />Dissolved Vanadium B183659-BS1 LCS 203.30 200.00 102 80 - 120ug/L 4 <br />Dissolved Zinc B183659-BS1 LCS 507.70 500.00 102 80 - 120ug/L 4 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B183538-BS1 LCS EPA-218.6 ANN IC11 102/07/24 02/07/24 19:49 <br /> 2 B183620-BS1 LCS EPA-7470A TMT CETAC4 102/08/24 02/09/24 13:15 <br /> 3 B183621-BS1 LCS EPA-7470A TMT CETAC4 102/08/24 02/09/24 13:57 <br /> 4 B183659-BS1 LCS EPA-6010B MG2 PE-OP4 102/09/24 02/12/24 16:30 <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 78 of 99Report ID: 1001490723