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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 /> m,p-Xylene 171 5.0 ug/kg 203 ND 84.2 60-140 <br /> o-Xylene 88.5 2.5 ug/kg 102 ND 87.2 60-140 <br /> Styrene 85.5 2.5 ug/kg 102 ND 84.2 60-140 <br /> Xylenes(total) 259 7.5 ug/kg 305 ND 85.2 60-140 <br /> Bromoform 73.7 2.5 ug/kg 102 ND 72.6 60-140 <br /> 1,1,2,2-Tetrachloroethane 78.1 2.5 ug/kg 102 ND 76.9 60-140 <br /> Isopropylbenzene 85.0 2.5 ug/kg 102 ND 83.8 60-140 <br /> 1,2,3-Trichloropropane 81.4 2.5 ug/kg 102 ND 80.2 60-140 <br /> Bromobenzene 85.5 2.5 ug/kg 102 ND 84.2 60-140 <br /> n-Propylbenzene 81.4 2.5 ug/kg 102 ND 80.2 60-140 <br /> 2-Chlorotoluene 85.1 2.5 ug/kg 102 ND 83.8 60-140 <br /> 4-Chlorotoluene 83.0 2.5 ug/kg 102 ND 81.8 60-140 <br /> 1,3,5-Trimethylbenzene 83.7 2.5 ug/kg 102 ND 82.5 60-140 <br /> tert-Butylbenzene 84.9 2.5 ug/kg 102 ND 83.7 60-140 <br /> 1,2,4-Trimethylbenzene 74.2 2.5 ug/kg 102 ND 73.1 60-140 <br /> sec-Butylbenzene 82.7 2.5 ug/kg 102 ND 81.4 60-140 <br /> 1,3-Dichlorobenzene 78.4 2.5 ug/kg 102 ND 77.3 60-140 <br /> p-Isopropyltoluene 80.4 2.5 ug/kg 102 ND 79.2 60-140 <br /> 1,4-Dichlorobenzene 83.1 2.5 ug/kg 102 ND 81.8 60-140 <br /> 1,2-Dichlorobenzene 84.5 2.5 ug/kg 102 27.6 56.1 60-140 QM-01 <br /> Ethyl tert-butyl ether 92.1 2.5 ug/kg 102 ND 90.7 60-140 <br /> n-Butylbenzene 79.7 2.5 ug/kg 102 ND 78.5 60-140 <br /> 1,2-Dibromo-3-chloropropane 72.3 2.5 ug/kg 102 ND 71.3 60-140 <br /> 1,2,4-Trichlorobenzene 58.1 2.5 ug/kg 102 ND 57.2 60-140 QM-01 <br /> Naphthalene 46.4 2.5 ug/kg 102 ND 45.7 60-140 QM-01 <br /> Hexachlorobutadiene 66.9 2.5 ug/kg 102 ND 65.9 60-140 <br /> 1,2,3-Trichlorobenzene 55.4 2.5 ug/kg 102 ND 54.6 60-140 QM-01 <br /> Acetone 2290 100 ug/kg 3050 193 68.7 60-140 <br /> Methyl ethyl ketone 210 5.0 ug/kg 254 ND 81.5 60-140 <br /> Methyl isobutyl ketone 181 5.0 ug/kg 254 ND 71.2 60-140 <br /> Surrogate:Dibromofluoromethane 48.5 ug/kg 50.8 ND 95.6 70-130 <br /> Surrogate:Toluene-d8 51.2 ug/kg 50.8 ND 101 70-130 <br /> Surrogate:Bromofluorobenzene 50.1 ug/kg 50.8 ND 98.6 70-130 <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 14 of 18 <br />