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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 />Water Analysis (General Chemistry) <br />Run #MDLPQL <br />QC Batch ID: B202418 <br />Bicarbonate B202418-BLK1 5.0NDmg/L 5.0 1 <br />Carbonate B202418-BLK1 2.5NDmg/L 2.5 1 <br />Total Alkalinity as CaCO3 B202418-BLK1 4.1NDmg/L 4.1 1 <br />QC Batch ID: B202419 <br />Bicarbonate B202419-BLK1 5.0NDmg/L 5.0 2 <br />Carbonate B202419-BLK1 2.5NDmg/L 2.5 2 <br />Total Alkalinity as CaCO3 B202419-BLK1 4.1NDmg/L 4.1 2 <br />QC Batch ID: B204442 <br />Chloride B204442-BLK1 0.50NDmg/L 0.13 3 <br />Nitrate as N B204442-BLK1 0.10NDmg/L 0.024 3 <br />Sulfate B204442-BLK1 1.0NDmg/L 0.14 3 <br />QC Batch ID: B204443 <br />Chloride B204443-BLK1 0.50NDmg/L 0.13 4 <br />Nitrate as N B204443-BLK1 0.10NDmg/L 0.024 4 <br />Sulfate B204443-BLK1 1.0 J0.14260 mg/L 0.14 4 <br />QC Batch ID: B204494 <br />Total Sulfide B204494-BLK1 0.10NDmg/L 0.050 5 <br />QC Batch ID: B204521 <br />Total Calcium B204521-BLK1 0.10 J0.021200 mg/L 0.015 6 <br />Total Magnesium B204521-BLK1 0.050NDmg/L 0.019 6 <br />Total Sodium B204521-BLK1 1.0 J0.068200 mg/L 0.051 6 <br />Total Potassium B204521-BLK1 1.0 J0.18290 mg/L 0.13 6 <br />QC Batch ID: B204544 <br />Total Dissolved Solids @ 180 C B204544-BLK1 6.7NDmg/L 3.3 7 <br />QC Batch ID: B204731 <br />Total Cyanide B204731-BLK1 0.0050NDmg/L 0.0017 8 <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 29 of 40Report ID: 1001565394