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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 />Case Narrative <br />Sample Receipt <br />COC Number: <br />Samples received refrigerated to 0.7 °C <br />Sample List <br />Lab Number Date/Time Sampled Sample Name <br />2500663-01 01/13/2025 13:25 MW-4A <br />2500663-02 01/13/2025 13:30 Field Blank <br />2500663-03 01/13/2025 00:00 Trip Blank <br />Requested Analysis <br />EPA-160.1, EPA-300.0, EPA-310.1, EPA-6010B (Diss), EPA-8260B <br />Sample Analyte Flag <br />Sample Qualifier Summary <br />Total Dissolved Solids @ 180 C2500663-01 A10EPA-160.1 <br />Holding Times <br />All holding time requirements were met. <br />Method Blanks <br />ChlorideB204369-BLK1 0.22100 mg/LEPA-300.0 <br />Total Dissolved Solids @ 180 CB204465-BLK1 14.667 mg/LEPA-160.1 <br />Total Dissolved Solids @ 180 CB204465-BLK1 B01EPA-160.1 <br />Matrix Spikes <br />Precision and accuracy requirements are within QC limits. <br />LCS <br />The LCS recoveries are within QC limits. <br />Discussion <br />Summary of Flags <br />A10 Detection and quantitation limits were raised due to matrix interference. <br />B01 Analyte detected in the Continuing Calibration Blank (CCB) at a level greater than the PQL. <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 4 of 27Report ID: 1001564826