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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 /> Matrix Spike(AJ53925-MS1) Source:25J1904-02 Prepared:10/10/25 Analyzed: 10/11/25 <br /> 1,1-Dichloroethene 85.1 2.5 ug/kg 102 ND 83.9 60-140 <br /> 1,1,2-Trichlorotrifluoroethane 80.9 2.5 ug/kg 102 ND 79.7 60-140 <br /> Tert-butyl alcohol 2430 100 ug/kg 3050 ND 76.7 52-173 <br /> Methylene chloride 97.4 2.5 ug/kg 102 8.38 87.7 60-140 <br /> Carbon disulfide 78.2 2.5 ug/kg 102 ND 77.1 70-130 <br /> Methyl tert-butyl ether 101 2.5 ug/kg 102 ND 99.8 60-140 <br /> trans-1,2-Dichloroethene 93.0 2.5 ug/kg 102 ND 91.6 60-140 <br /> 1,1-Dichloroethane 94.0 2.5 ug/kg 102 ND 92.6 60-140 <br /> Di-isopropyl ether 93.1 2.5 ug/kg 102 ND 91.7 53-138 <br /> cis-1,2-Dichloroethene 92.1 2.5 ug/kg 102 ND 90.7 60-140 <br /> 2,2-Dichloropropane 93.9 2.5 ug/kg 102 ND 92.5 60-140 <br /> Chloroform 93.4 2.5 ug/kg 102 ND 92.0 60-140 <br /> Bromochloromethane 89.8 2.5 ug/kg 102 ND 88.5 60-140 <br /> Tetrahydrofuran 82.5 2.5 ug/kg 102 ND 81.3 70-130 <br /> 1,1,1-Trichloroethane 92.1 2.5 ug/kg 102 ND 90.8 60-140 <br /> 1,2-Dichloroethane 90.4 2.5 ug/kg 102 ND 89.1 60-140 <br /> 1,1-Dichloropropene 91.1 2.5 ug/kg 102 ND 89.8 60-140 <br /> Carbon tetrachloride 88.8 2.5 ug/kg 102 ND 87.4 60-140 <br /> Benzene 92.0 2.5 ug/kg 102 ND 90.7 60-140 <br /> Tert-amyl methyl ether 89.8 2.5 ug/kg 102 ND 88.4 47-146 <br /> Trichloroethene 90.0 2.5 ug/kg 102 ND 88.7 60-140 <br /> 1,2-Dichloropropane 92.1 2.5 ug/kg 102 ND 90.7 60-140 <br /> Dibromomethane 86.6 2.5 ug/kg 102 ND 85.3 60-140 <br /> Bromodichloromethane 87.7 2.5 ug/kg 102 ND 86.4 60-140 <br /> cis-1,3-Dichloropropene 84.1 2.5 ug/kg 102 ND 82.9 60-140 <br /> Toluene 93.4 2.5 ug/kg 102 ND 92.0 60-140 <br /> trans-1,3-Dichloropropene 81.6 2.5 ug/kg 102 ND 80.4 60-140 <br /> 1,1,2-Trichloroethane 86.9 2.5 ug/kg 102 ND 85.6 60-140 <br /> 1,3-Dichloropropane 86.0 2.5 ug/kg 102 ND 84.7 60-140 <br /> Dibromochloromethane 79.8 2.5 ug/kg 102 ND 78.7 60-140 <br /> Tetrachloroethene 84.3 2.5 ug/kg 102 ND 83.1 60-140 <br /> 1,2-Dibromoethane(EDB) 82.7 2.5 ug/kg 102 ND 81.4 60-140 <br /> Chlorobenzene 86.5 2.5 ug/kg 102 ND 85.2 60-140 <br /> 1,1,1,2-Tetrachloroethane 87.4 2.5 ug/kg 102 ND 86.1 60-140 <br /> Ethylbenzene 90.8 2.5 ug/kg 102 ND 89.5 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 13 of 18 <br />