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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 Dup(AJ53925-MSD1) Source:25J1904-02 Prepared:10/10/25 Analyzed: 10/11/25 <br /> Dichlorodifluoromethane 65.2 2.5 ug/kg 102 ND 64.2 60-140 27.6 25 QM-01 <br /> Chloromethane 83.8 2.5 ug/kg 102 ND 82.5 60-140 9.96 25 <br /> Vinyl chloride 87.5 2.5 ug/kg 102 ND 86.2 60-140 11.0 25 <br /> Bromomethane 101 2.5 ug/kg 102 ND 99.7 60-140 2.04 25 <br /> Chloroethane 108 2.5 ug/kg 102 ND 107 60-140 15.5 25 <br /> Trichlorofluoromethane 87.2 2.5 ug/kg 102 ND 85.9 60-140 7.30 25 <br /> 1,1-Dichloroethene 91.9 2.5 ug/kg 102 ND 90.5 60-140 7.66 25 <br /> 1,1,2-Trichlorotrifluoroethane 85.0 2.5 ug/kg 102 ND 83.7 60-140 4.96 25 <br /> Tert-butyl alcohol 2870 100 ug/kg 3050 ND 91.2 52-173 16.6 25 <br /> Methylene chloride 103 2.5 ug/kg 102 8.38 93.1 60-140 5.42 25 <br /> Carbon disulfide 82.5 2.5 ug/kg 102 ND 81.3 70-130 5.34 30 <br /> Methyl tert-butyl ether 114 2.5 ug/kg 102 ND 112 60-140 11.4 25 <br /> trans-1,2-Dichloroethene 99.5 2.5 ug/kg 102 ND 98.0 60-140 6.73 25 <br /> 1,1-Dichloroethane 99.0 2.5 ug/kg 102 ND 97.5 60-140 5.23 25 <br /> Di-isopropyl ether 99.0 2.5 ug/kg 102 ND 97.5 53-138 6.13 25 <br /> cis-1,2-Dichloroethene 95.9 2.5 ug/kg 102 ND 94.5 60-140 4.08 25 <br /> 2,2-Dichloropropane 98.1 2.5 ug/kg 102 ND 96.6 60-140 4.42 25 <br /> Chloroform 98.1 2.5 ug/kg 102 ND 96.7 60-140 4.90 25 <br /> Bromochloromethane 95.0 2.5 ug/kg 102 ND 93.6 60-140 5.63 25 <br /> Tetrahydrofuran 94.2 2.5 ug/kg 102 ND 92.8 70-130 13.2 25 <br /> 1,1,1-Trichloroethane 96.1 2.5 ug/kg 102 ND 94.6 60-140 4.18 25 <br /> 1,2-Dichloroethane 95.6 2.5 ug/kg 102 ND 94.2 60-140 5.54 25 <br /> 1,1-Dichloropropene 95.7 2.5 ug/kg 102 ND 94.3 60-140 4.86 25 <br /> Carbon tetrachloride 92.2 2.5 ug/kg 102 ND 90.8 60-140 3.76 25 <br /> Benzene 96.4 2.5 ug/kg 102 ND 94.9 60-140 4.61 25 <br /> Tert-amyl methyl ether 96.3 2.5 ug/kg 102 ND 94.9 47-146 7.06 25 <br /> Trichloroethene 94.7 2.5 ug/kg 102 ND 93.3 60-140 5.14 25 <br /> 1,2-Dichloropropane 96.7 2.5 ug/kg 102 ND 95.3 60-140 4.92 25 <br /> Dibromomethane 93.1 2.5 ug/kg 102 ND 91.7 60-140 7.20 25 <br /> Bromodichloromethane 90.0 2.5 ug/kg 102 ND 88.7 60-140 2.60 25 <br /> cis-1,3-Dichloropropene 85.8 2.5 ug/kg 102 ND 84.5 60-140 1.94 25 <br /> Toluene 97.6 2.5 ug/kg 102 ND 96.1 60-140 4.41 25 <br /> trans-1,3-Dichloropropene 84.6 2.5 ug/kg 102 ND 83.3 60-140 3.57 25 <br /> 1,1,2-Trichloroethane 92.4 2.5 ug/kg 102 ND 91.0 60-140 6.09 25 <br /> 1,3-Dichloropropane 91.5 2.5 ug/kg 102 ND 90.2 60-140 6.23 25 <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 15 of 18 <br />