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Alpha Analytical Laboratories, Inc. email: rlientservices alpha-labs.com <br /> Corporate: 208 Mason Street I Ukiah, CA 95482 1 T, 707468-C401 l R 707468-5267 1 EL.AP# 1551 <br /> McCampbell Analytical/Alpha Quote 232557 Project Manager: Lab Reports <br /> 1534 Willow Pass Rd. Project: Soil Testing Reported: <br /> Pittsburg, CA 94565 Project Number: LLNL 13882-Disp 10/14/25 12:59 <br /> Volatile Organic Compounds by EPA Method 8260B-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte(s) Result Limit Units Level Result %REC Limits RPD Limit Flag <br /> Batch AJ53925-NB EPA 5030 Soil GCMS <br /> MRL Check(AJ53925-MRLl) Prepared&Analyzed: 10/10/25 <br /> 1,2,3-Trichloropropane 3.32 2.5 ug/kg 2.50 133 50-200 <br /> Bromobenzene 3.48 2.5 ug/kg 2.50 139 50-200 <br /> n-Propylbenzene 3.32 2.5 ug/kg 2.50 133 50-200 <br /> 2-Chlorotoluene 2.85 2.5 ug/kg 2.50 114 50-200 <br /> 4-Chlorotoluene 2.72 2.5 ug/kg 2.50 109 50-200 <br /> 1,3,5-Trimethylbenzene 2.22 2.5 ug/kg 2.50 89.0 50-200 <br /> tert-Butylbenzene 2.20 2.5 ug/kg 2.50 88.0 50-200 <br /> 1,2,4-Trimethylbenzene 2.18 2.5 ug/kg 2.50 87.0 50-200 <br /> sec-Butylbenzene 2.05 2.5 ug/kg 2.50 82.0 50-200 <br /> 1,3-Dichlorobenzene 3.32 2.5 ug/kg 2.50 133 50-200 <br /> p-Isopropyltoluene 2.28 2.5 ug/kg 2.50 91.0 50-200 <br /> 1,4-Dichlorobenzene 3.55 2.5 ug/kg 2.50 142 50-200 <br /> Ethyl tert-butyl ether 2.55 2.5 ug/kg 2.50 102 50-200 <br /> 1,2-Dichlorobenzene 3.60 2.5 ug/kg 2.50 144 50-200 <br /> n-Butylbenzene 2.35 2.5 ug/kg 2.50 94.0 50-200 <br /> 1,2-Dibromo-3-chloropropane 3.08 2.5 ug/kg 2.50 123 50-200 <br /> 1,2,4-Trichlorobenzene 2.98 2.5 ug/kg 2.50 119 50-200 <br /> Naphthalene 2.32 2.5 ug/kg 2.50 93.0 50-200 <br /> Hexachlorobutadiene 3.78 2.5 ug/kg 2.50 151 50-200 <br /> 1,2,3-Trichlorobenzene 3.12 2.5 ug/kg 2.50 125 50-200 <br /> Acetone 375 100 ug/kg 75.0 500 50-200 <br /> Methyl ethyl ketone 11.1 5.0 ug/kg 6.25 178 50-200 <br /> Methyl isobutyl ketone 5.85 5.0 ug/kg 6.25 93.6 50-200 <br /> Surrogate:DibromoJluoromethane 50.6 ug/kg 50.0 101 70-130 <br /> Surrogate:Toluene-& 48.4 ug4rg 50.0 96.7 70-130 <br /> Surrogate:Bromofluorobenzene 47.6 ug/kg 50.0 95.2 70-130 <br /> Matrix Spike(AJ53925-MS1) Source:25J1904-02 Prepared:10/10/25 Analyzed:10/11/25 <br /> Dichlorodifluoromethane 49.4 2.5 ug/kg 102 ND 48.6 60-140 QM-01 <br /> Chloromethane 75.8 2.5 ug/kg 102 ND 74.7 60-140 <br /> Vinyl chloride 78.4 2.5 ug/kg 102 ND 77.2 60-140 <br /> Bromomethane 103 2.5 ug/kg 102 ND 102 60-140 <br /> Chloroethane 92.9 2.5 ug/kg 102 ND 91.5 60-140 <br /> Trichlorofluoromethane 81.0 2.5 ug/kg 102 ND 79.8 60-140 <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 /> Page 12 of 18 <br />