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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 30167676.01 <br />Ari Terry <br />Reported:02/28/2024 11:01 <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: B183539 <br />Hexavalent Chromium B183539-BS1 LCS 18.280 20.000 91.4 90 - 110ug/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: B183661 <br />Dissolved Aluminum B183661-BS2 LCS 995.05 1000.0 99.5 80 - 120ug/L 4 <br />Dissolved Antimony B183661-BS1 LCS 348.79 400.00 87.2 80 - 120ug/L 5 <br />Dissolved Arsenic B183661-BS1 LCS 195.28 200.00 97.6 80 - 120ug/L 5 <br />Dissolved Barium B183661-BS1 LCS 416.11 400.00 104 80 - 120ug/L 5 <br />Dissolved Beryllium B183661-BS1 LCS 204.05 200.00 102 80 - 120ug/L 5 <br />Dissolved Cadmium B183661-BS1 LCS 202.08 200.00 101 80 - 120ug/L 5 <br />Dissolved Chromium B183661-BS1 LCS 208.86 200.00 104 80 - 120ug/L 5 <br />Dissolved Cobalt B183661-BS1 LCS 210.73 200.00 105 80 - 120ug/L 5 <br />Dissolved Copper B183661-BS1 LCS 400.99 400.00 100 80 - 120ug/L 5 <br />Dissolved Iron B183661-BS1 LCS 1015.6 1000.0 102 80 - 120ug/L 5 <br />Dissolved Lead B183661-BS1 LCS 422.69 400.00 106 80 - 120ug/L 5 <br />Dissolved Manganese B183661-BS1 LCS 535.41 500.00 107 80 - 120ug/L 5 <br />Dissolved Nickel B183661-BS1 LCS 424.00 400.00 106 80 - 120ug/L 5 <br />Dissolved Selenium B183661-BS1 LCS 199.41 200.00 99.7 80 - 120ug/L 5 <br />Dissolved Silver B183661-BS1 LCS 99.992 100.00 100 80 - 120ug/L 5 <br />Dissolved Tin B183661-BS1 LCS 222.02 200.00 111 80 - 120ug/L 5 <br />Dissolved Thallium B183661-BS1 LCS 428.63 400.00 107 80 - 120ug/L 5 <br />Dissolved Vanadium B183661-BS1 LCS 211.89 200.00 106 80 - 120ug/L 5 <br />Dissolved Zinc B183661-BS1 LCS 526.94 500.00 105 80 - 120ug/L 5 <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 B183539-BS1 LCS EPA-218.6 RC1 IC11 102/07/24 02/07/24 23:05 <br /> 3 B183621-BS1 LCS EPA-7470A TMT CETAC4 102/08/24 02/09/24 13:57 <br /> 4 B183661-BS2 LCS EPA-6010B JRG PE-OP4 102/09/24 02/09/24 19:17 <br /> 5 B183661-BS1 LCS EPA-6010B MG2 PE-OP4 102/09/24 02/09/24 19:17 <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 76 of 97Report ID: 1001492876