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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:01/20/2025 17:15 <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: B202413 <br />Bicarbonate B202413-BLK1 5.0NDmg/L 5.0 1 <br />Carbonate B202413-BLK1 2.5NDmg/L 2.5 1 <br />Total Alkalinity as CaCO3 B202413-BLK1 4.1NDmg/L 4.1 1 <br />QC Batch ID: B204369 <br />Chloride B204369-BLK1 0.50 J0.22100 mg/L 0.13 2 <br />Nitrate as N B204369-BLK1 0.10NDmg/L 0.024 2 <br />Sulfate B204369-BLK1 1.0NDmg/L 0.14 2 <br />QC Batch ID: B204386 <br />Dissolved Calcium B204386-BLK1 0.10NDmg/L 0.016 3 <br />Dissolved Magnesium B204386-BLK1 0.050NDmg/L 0.022 3 <br />Dissolved Sodium B204386-BLK1 1.0NDmg/L 0.051 3 <br />Dissolved Potassium B204386-BLK1 1.0NDmg/L 0.10 3 <br />QC Batch ID: B204465 <br />Total Dissolved Solids @ 180 C B204465-BLK1 6.7 B0114.667 mg/L 3.3 4 <br />Run # QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B202413-BLK1 PB EPA-310.1 ELR MET-1 101/16/25 01/16/25 09:10 <br /> 2 B204369-BLK1 PB EPA-300.0 ANN IC2 101/14/25 01/14/25 20:08 <br /> 3 B204386-BLK1 PB EPA-6010B JEH ICP5 101/15/25 01/15/25 11:45 <br /> 4 B204465-BLK1 PB EPA-160.1 IJC MANUAL 0.66701/16/25 01/16/25 13:30 <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 20 of 27Report ID: 1001564826