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APTIM - Solid Waste Department <br />4171 Essen Lane <br />Baton Rouge, LA 70809 <br />Project: <br />Project Number: <br />Project Manager: <br />Foothill Landfill, SJ County <br />631038217 <br />Sandra Pimienta <br />Reported:01/22/2025 17:07 <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: B204521 <br />Total Aluminum B204521-BS1 LCS 1006.9 1000.0 101 80 - 120ug/L 1 <br />Total Antimony B204521-BS1 LCS 372.50 400.00 93.1 80 - 120ug/L 1 <br />Total Arsenic B204521-BS1 LCS 182.30 200.00 91.2 80 - 120ug/L 1 <br />Total Barium B204521-BS1 LCS 398.00 400.00 99.5 80 - 120ug/L 1 <br />Total Beryllium B204521-BS1 LCS 195.11 200.00 97.6 80 - 120ug/L 1 <br />Total Cadmium B204521-BS1 LCS 198.60 200.00 99.3 80 - 120ug/L 1 <br />Total Chromium B204521-BS1 LCS 199.20 200.00 99.6 80 - 120ug/L 1 <br />Total Cobalt B204521-BS1 LCS 199.90 200.00 100 80 - 120ug/L 1 <br />Total Copper B204521-BS1 LCS 379.00 400.00 94.8 80 - 120ug/L 1 <br />Total Iron B204521-BS1 LCS 1045.5 1000.0 105 80 - 120ug/L 1 <br />Total Lead B204521-BS1 LCS 403.20 400.00 101 80 - 120ug/L 1 <br />Total Manganese B204521-BS1 LCS 515.10 500.00 103 80 - 120ug/L 1 <br />Total Molybdenum B204521-BS1 LCS 202.10 200.00 101 80 - 120ug/L 1 <br />Total Nickel B204521-BS1 LCS 399.60 400.00 99.9 80 - 120ug/L 1 <br />Total Selenium B204521-BS1 LCS 183.50 200.00 91.8 80 - 120ug/L 1 <br />Total Silver B204521-BS1 LCS 96.500 100.00 96.5 80 - 120ug/L 1 <br />Total Tin B204521-BS1 LCS 206.60 200.00 103 80 - 120ug/L 1 <br />Total Thallium B204521-BS1 LCS 393.90 400.00 98.5 80 - 120ug/L 1 <br />Total Vanadium B204521-BS1 LCS 199.40 200.00 99.7 80 - 120ug/L 1 <br />Total Zinc B204521-BS1 LCS 492.00 500.00 98.4 80 - 120ug/L 1 <br />QC Batch ID: B204703 <br />Total Mercury B204703-BS1 LCS 1.0175 1.0000 102 85 - 115ug/L 2 <br />Run # QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B204521-BS1 LCS EPA-6010B JEH ICP5 101/16/25 01/17/25 10:00 <br /> 2 B204703-BS1 LCS EPA-7470A TMT CETAC4 101/21/25 01/21/25 13:29 <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 37 of 40Report ID: 1001565394