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aceAnalytical m <br /> ENVIRDN MENTAL SCIENCES <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 /> Volatile Organic Analysis (EPA Method 82606/5035) <br /> BCL Sample ID: 2214240-11 Client Sample Name: D-6,6/17/2022 10:48:OOAM <br /> MB Lab <br /> Constituent Result Units PQL MDL Method Bias Quals DCN <br /> Ethyl t-butyl ether ND mg/kg 0.0037 0.00037 EPA-8260B ND 1 <br /> Total Purgeable Petroleum ND mg/kg 0.15 0.043 Luft-GC/MS ND 1 <br /> Hydrocarbons <br /> 1,2-Dichloroethane-d4(Surrogate) 115 % 70-121 (LCL-UCL) EPA-8260B 1 <br /> Toluene-d8(Surrogate) 103 % 81-117 (LCL-UCL) EPA-8260B 1 <br /> 4-Bromofluorobenzene(Surrogate) 96.8 % 74-121 (LCL-UCL) EPA-8260B 1 <br /> Run QC <br /> DCN Method Prep Date Date/Time Analyst Instrument Dilution Batch ID Prep Method <br /> 1 EPA-8260B 06/20/22 10:00 06/20/22 18:30 EAB MS417 0.747 B142226 EPA 5035 Soil MS <br /> DCN=Data Continuation Number <br /> The resullr in chis report apply to the samples anal zed in accordance with the chain of custody document.This onahvrcal report muss he reproduced in in emirely. <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 /> ReportID: 1001318187 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 53 of 79 <br />