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1_'2'-Ana1y6ca1_ <br /> ENVIRONMENTAL SCIENCES <br /> I <br /> Kleinfelder,Inc.-Rancho Cordova Reported: 06/21/2022 14:57 <br /> 2882 Prospect Park,Suite 200 Project: Tracy Costco UST Removal <br /> Rancho Cordova,CA 95670 Project Number: 20223491.00A <br /> Project Manager: Paolo Dizon <br /> Total Concentrations (TTLC) <br /> BCL Sample ID: 2214240-03 Client Sample Name: P-3,6/17/2022 10:20:OOAM <br /> MB Lab <br /> Constituent Result Units PQL MDL Method Bias Qualls DCN <br /> Lead 6.6 mg/kg 2.5 0.41 EPA-60108 ND 1 <br /> Run QC <br /> DCN Method Prep Date Date/Time Analyst Instrument Dilution Batch ID Prep Method <br /> 1 EPA-6010B 06/20/22 12:51 06/21/22 10:09 JCC PE-CIP3 0.990 B142314 EPA 3050B <br /> DCN=Data Continuation Number <br /> The results in this report apply to the sampler unaly_ecl in occorr(unce with the chain of custody doc•ament.This anulvticul report mucrt he reproduced in iiv eniwty. <br /> All results listed in this report arc for the exclusive use of the submitting panv. Pace Analytical assumes no responsibility for report alteration,separation,detachment or third party interpretation. <br /> ReportID: 1001318187 4100 Atlas Court Bakersfield, CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 22 of 79 <br />