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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 />Austin Unit <br />Drew Feucht <br />Reported:09/19/2023 15:16 <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: B171444 <br />Dissolved Arsenic B171444-BS1 LCS 94.755 100.00 94.8 85 - 115ug/L 1 <br />LCSDB171444-BSD1 97.919 100.00 97.9 3.3 85 - 115 20ug/L 2 <br />QC Batch ID: B171452 <br />Hexavalent Chromium B171452-BS1 LCS 18.619 20.000 93.1 90 - 110ug/L 3 <br />QC Batch ID: B171740 <br />Total Arsenic B171740-BS1 LCS 199.31 200.00 99.7 80 - 120ug/L 4 <br />Total Iron B171740-BS1 LCS 1096.4 1000.0 110 80 - 120ug/L 4 <br />Total Manganese B171740-BS1 LCS 564.17 500.00 113 80 - 120ug/L 4 <br />QC Batch ID: B172104 <br />Dissolved Mercury B172104-BS1 LCS 0.98250 1.0000 98.2 85 - 115ug/L 5 <br />LCSDB172104-BSD1 1.0000 1.0000 100 1.8 85 - 115 20ug/L 6 <br />QC Batch ID: B172390 <br />Dissolved Aluminum B172390-BS1 LCS 1040.5 1000.0 104 80 - 120ug/L 7 <br />Dissolved Antimony B172390-BS1 LCS 347.87 400.00 87.0 80 - 120ug/L 7 <br />Dissolved Barium B172390-BS1 LCS 399.83 400.00 100 80 - 120ug/L 7 <br />Dissolved Beryllium B172390-BS1 LCS 212.51 200.00 106 80 - 120ug/L 7 <br />Dissolved Cadmium B172390-BS1 LCS 205.80 200.00 103 80 - 120ug/L 7 <br />Dissolved Chromium B172390-BS1 LCS 197.86 200.00 98.9 80 - 120ug/L 7 <br />Dissolved Cobalt B172390-BS1 LCS 203.29 200.00 102 80 - 120ug/L 7 <br />Dissolved Copper B172390-BS1 LCS 399.37 400.00 99.8 80 - 120ug/L 7 <br />Dissolved Iron B172390-BS1 LCS 1045.6 1000.0 105 80 - 120ug/L 7 <br />Dissolved Lead B172390-BS1 LCS 422.75 400.00 106 80 - 120ug/L 7 <br />Dissolved Manganese B172390-BS1 LCS 542.24 500.00 108 80 - 120ug/L 7 <br />Dissolved Nickel B172390-BS1 LCS 421.99 400.00 105 80 - 120ug/L 7 <br />Dissolved Selenium B172390-BS1 LCS 209.27 200.00 105 80 - 120ug/L 7 <br />Dissolved Silver B172390-BS1 LCS 102.48 100.00 102 80 - 120ug/L 7 <br />Dissolved Strontium B172390-BS1 LCS 486.89 500.00 97.4 80 - 120ug/L 7 <br />Dissolved Tin B172390-BS1 LCS 213.63 200.00 107 80 - 120ug/L 7 <br />Dissolved Thallium B172390-BS1 LCS 436.38 400.00 109 80 - 120ug/L 7 <br />Dissolved Vanadium B172390-BS1 LCS 197.43 200.00 98.7 80 - 120ug/L 7 <br />Dissolved Zinc B172390-BS1 LCS 546.68 500.00 109 80 - 120ug/L 7 <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 54 of 59Report ID: 1001456984