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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 - Method Blank Analysis <br />Constituent QC Sample ID MB Result Units Lab Quals <br />Metals Analysis <br />Run #MDLPQL <br />QC Batch ID: B204521 <br />Total Aluminum B204521-BLK1 50NDug/L 26 1 <br />Total Antimony B204521-BLK1 100NDug/L 8.5 1 <br />Total Arsenic B204521-BLK1 50NDug/L 7.8 1 <br />Total Barium B204521-BLK1 10NDug/L 3.5 1 <br />Total Beryllium B204521-BLK1 10NDug/L 0.50 1 <br />Total Cadmium B204521-BLK1 10NDug/L 1.1 1 <br />Total Chromium B204521-BLK1 10 J1.8000 ug/L 1.1 1 <br />Total Cobalt B204521-BLK1 50NDug/L 1.3 1 <br />Total Copper B204521-BLK1 10NDug/L 1.1 1 <br />Total Iron B204521-BLK1 50 J30.700 ug/L 30 1 <br />Total Lead B204521-BLK1 50NDug/L 4.0 1 <br />Total Manganese B204521-BLK1 10NDug/L 4.0 1 <br />Total Molybdenum B204521-BLK1 50 J2.1000 ug/L 1.2 1 <br />Total Nickel B204521-BLK1 10NDug/L 2.0 1 <br />Total Selenium B204521-BLK1 100NDug/L 15 1 <br />Total Silver B204521-BLK1 10NDug/L 1.9 1 <br />Total Tin B204521-BLK1 50NDug/L 6.7 1 <br />Total Thallium B204521-BLK1 100NDug/L 24 1 <br />Total Vanadium B204521-BLK1 10NDug/L 2.2 1 <br />Total Zinc B204521-BLK1 50NDug/L 2.3 1 <br />QC Batch ID: B204703 <br />Total Mercury B204703-BLK1 0.20NDug/L 0.022 2 <br />Run # QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B204521-BLK1 PB EPA-6010B JEH ICP5 101/16/25 01/17/25 09:58 <br /> 2 B204703-BLK1 PB EPA-7470A TMT CETAC4 101/21/25 01/21/25 13:24 <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 36 of 40Report ID: 1001565394