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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 />4Q23 Forward Unit <br />Drew Feucht <br />Reported:12/14/2023 18:58 <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: B178626 <br />Hexavalent Chromium B178626-BS1 LCS 19.438 20.000 97.2 90 - 110ug/L 1 <br />QC Batch ID: B178641 <br />Dissolved Aluminum B178641-BS2 LCS 1038.5 1000.0 104 80 - 120ug/L 2 <br />Dissolved Antimony B178641-BS1 LCS 361.62 400.00 90.4 80 - 120ug/L 3 <br />Dissolved Arsenic B178641-BS1 LCS 204.55 200.00 102 80 - 120ug/L 3 <br />Dissolved Barium B178641-BS1 LCS 421.00 400.00 105 80 - 120ug/L 3 <br />Dissolved Beryllium B178641-BS1 LCS 204.12 200.00 102 80 - 120ug/L 3 <br />Dissolved Cadmium B178641-BS1 LCS 197.48 200.00 98.7 80 - 120ug/L 3 <br />Dissolved Chromium B178641-BS1 LCS 212.00 200.00 106 80 - 120ug/L 3 <br />Dissolved Cobalt B178641-BS1 LCS 212.86 200.00 106 80 - 120ug/L 3 <br />Dissolved Copper B178641-BS1 LCS 409.51 400.00 102 80 - 120ug/L 3 <br />Dissolved Iron B178641-BS1 LCS 1036.2 1000.0 104 80 - 120ug/L 3 <br />Dissolved Lead B178641-BS1 LCS 424.92 400.00 106 80 - 120ug/L 3 <br />Dissolved Manganese B178641-BS1 LCS 538.83 500.00 108 80 - 120ug/L 3 <br />Dissolved Nickel B178641-BS1 LCS 432.68 400.00 108 80 - 120ug/L 3 <br />Dissolved Selenium B178641-BS1 LCS 206.68 200.00 103 80 - 120ug/L 3 <br />Dissolved Silver B178641-BS1 LCS 102.97 100.00 103 80 - 120ug/L 3 <br />Dissolved Tin B178641-BS1 LCS 223.18 200.00 112 80 - 120ug/L 3 <br />Dissolved Thallium B178641-BS1 LCS 441.40 400.00 110 80 - 120ug/L 3 <br />Dissolved Vanadium B178641-BS1 LCS 212.34 200.00 106 80 - 120ug/L 3 <br />Dissolved Zinc B178641-BS1 LCS 530.37 500.00 106 80 - 120ug/L 3 <br />QC Batch ID: B178999 <br />Dissolved Mercury B178999-BS1 LCS 0.88250 1.0000 88.2 85 - 115ug/L 4 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B178626-BS1 LCS EPA-218.6 EEC IC11 111/17/23 11/17/23 19:07 <br /> 2 B178641-BS2 LCS EPA-6010B JRG2 PE-OP4 111/21/23 12/14/23 12:38 <br /> 3 B178641-BS1 LCS EPA-6010B JRG PE-OP4 111/21/23 12/13/23 10:31 <br /> 4 B178999-BS1 LCS EPA-7470A TMT CETAC4 111/27/23 11/28/23 09:07 <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 21 of 36Report ID: 1001476303