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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 /> Dibromochloromethane 82.0 2.5 ug/kg 102 ND 80.8 60-140 2.67 25 <br /> Tetrachloroethene 86.1 2.5 ug/kg 102 ND 84.8 60-140 2.09 25 <br /> 1,2-Dibromoethane(EDB) 87.6 2.5 ug/kg 102 ND 86.3 60-140 5.81 25 <br /> Chlorobenzene 90.7 2.5 ug/kg 102 ND 89.4 60-140 4.78 25 <br /> 1,1,1,2-Tetrachloroethane 91.7 2.5 ug/kg 102 ND 90.3 60-140 4.79 25 <br /> Ethylbenzene 96.3 2.5 ug/kg 102 ND 94.9 60-140 5.83 25 <br /> m,p-Xylene 183 5.0 ug/kg 203 ND 90.3 60-140 7.08 25 <br /> o-Xylene 94.7 2.5 ug/kg 102 ND 93.3 60-140 6.84 25 <br /> Styrene 90.8 2.5 ug/kg 102 ND 89.4 60-140 6.02 25 <br /> Xylenes(total) 278 7.5 ug/kg 305 ND 91.3 60-140 7.00 25 <br /> Bromofonn 77.2 2.5 ug/kg 102 ND 76.0 60-140 4.68 25 <br /> 1,1,2,2-Tetrachloroethane 84.6 2.5 ug/kg 102 ND 83.4 60-140 8.08 25 <br /> Isopropylbenzene 92.9 2.5 ug/kg 102 ND 91.5 60-140 8.87 25 <br /> 1,2,3-Trichloropropane 88.7 2.5 ug/kg 102 ND 87.4 60-140 8.65 25 <br /> Bromobenzene 89.2 2.5 ug/kg 102 ND 87.8 60-140 4.21 25 <br /> n-Propylbenzene 88.7 2.5 ug/kg 102 ND 87.4 60-140 8.65 25 <br /> 2-Chlorotoluene 90.6 2.5 ug/kg 102 ND 89.2 60-140 6.27 25 <br /> 4-Chlorotoluene 88.4 2.5 ug/kg 102 ND 87.1 60-140 6.31 25 <br /> 1,3,5-Trimethylbenzene 89.8 2.5 ug/kg 102 ND 88.5 60-140 7.02 25 <br /> tert-Butylbenzene 91.3 2.5 ug/kg 102 ND 90.0 60-140 7.29 25 <br /> 1,2,4-Trimethylbenzene 82.1 2.5 ug/kg 102 ND 80.9 60-140 10.1 25 <br /> sec-Butylbenzene 88.4 2.5 ug/kg 102 ND 87.0 60-140 6.65 25 <br /> 1,3-Dichlorobenzene 83.1 2.5 ug/kg 102 ND 81.9 60-140 5.81 25 <br /> p-Isopropyholuene 85.8 2.5 ug/kg 102 ND 84.5 60-140 6.45 25 <br /> 1,4-Dichlorobenzene 89.4 2.5 ug/kg 102 ND 88.0 60-140 7.30 25 <br /> Ethyl tert-butyl ether 98.4 2.5 ug/kg 102 ND 96.9 60-140 6.61 25 <br /> 1,2-Dichlorobenzene 90.2 2.5 ug/kg 102 27.6 61.7 60-140 6.45 25 QM-01 <br /> n-Butylbenzene 88.1 2.5 ug/kg 102 ND 86.8 60-140 9.98 25 <br /> 1,2-Dibromo-3-chloropropane 83.8 2.5 ug/kg 102 ND 82.6 60-140 14.7 25 <br /> 1,2,4-Trichlorobenzene 62.3 2.5 ug/kg 102 ND 61.3 60-140 6.96 25 QM-01 <br /> Naphthalene 54.1 2.5 ug/kg 102 ND 53.3 60-140 15.4 25 QM-01 <br /> Hexachlorobutadiene 67.1 2.5 ug/kg 102 ND 66.1 60-140 0.227 25 <br /> 1,2,3-Trichlorobenzene 56.9 2.5 ug/kg 102 ND 56.1 60-140 2.67 25 QM-01 <br /> Acetone 2610 100 ug/kg 3050 193 79.3 60-140 13.2 25 <br /> Methyl ethyl ketone 238 5.0 ug/kg 254 ND 92.6 60-140 12.5 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 16 of 18 <br />