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ce Analytical <br /> EN YIRCNMENTA!SCIENCES <br /> Ground Zero Analysis, Inc.-Modesto Reported: 07/23/2024 11:27 <br /> 1172 Kansas Avenue Project: Stallworth Auto-EDF <br /> Modesto,CA 95351 Project Number: 602N.California St.Stockton,CA <br /> Project Manager: Greg Stahl <br /> Volatile Organic Analysis (EPA Method 826013) <br /> Pace Sample ID: 2410480-01 Client Sample Name: Stallworth Auto,VP-1@ 3ft,7/1/2024 10:50:OOAM,RK,GZA <br /> MB Lab <br /> Constituent Result Units PQL MDL Method Bias Qualls DCN <br /> Benzene 0.0019 mg/kg 0.0050 0.00067 EPA-8260B ND J 1 <br /> 1,2-Dibromoethane ND mg/kg 0.0050 0.00082 EPA-8260B ND 1 <br /> 1,2-Dichloroethane ND mg/kg 0.0050 0.00073 EPA-8260B ND <br /> Ethylbenzene ND mg/kg 0.0050 0.00069 EPA-8260B ND 1 <br /> Methyl t-butyl ether ND mg/kg 0.0050 0.00056 EPA-8260B ND 1 <br /> Naphthalene ND mg/kg 0.0050 0.00099 EPA-8260B ND <br /> Toluene 0.0026 mg/kg 0.0050 0.00069 EPA-8260B ND J <br /> Total Xylenes ND mg/kg 0.010 0.0025 EPA-8260B ND <br /> t-Amyl Methyl ether ND mg/kg 0.0050 0.00050 EPA-8260B ND <br /> t-Butyl alcohol ND mg/kg 0.050 0.012 EPA-8260B ND 1 <br /> Diisopropyl ether ND mg/kg 0.0050 0.00057 EPA-8260B ND 1 <br /> Ethyl t-butyl ether ND mg/kg 0.0050 0.00050 EPA-8260B ND 1 <br /> p-&m-Xylenes ND mg/kg 0.0050 0.0015 EPA-8260B ND 1 <br /> o-Xylene ND mg/kg 0.0050 0.00093 EPA-8260B ND <br /> 1,2-Dichloroethane-d4(Surrogate) 92.0 % 70-121 (LCL-UCL) EPA-8260B <br /> Toluene-d8(Surrogate) 103 % 81-117 (LCL-UCL) EPA-8260B 1 <br /> 4-Bromofluorobenzene(Surrogate) 99.6 % 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 07/10/24 16:30 07/12/24 12:09 EAB MS-V18 1 B192596 EPA 5030 Soil MS <br /> DCN=Data Continuation Number <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 /> Report ID: 1001524132 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 7 of 35 <br />