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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 /> LCS(AJ53925-BS1) Prepared&Analyzed: 10/10/25 <br /> 1,2-Dichloropropane 101 2.5 ug/kg 100 101 70-130 <br /> Dibromomethane 100 2.5 ug/kg 100 100 70-130 <br /> Bromodichloromethane 101 2.5 ug/kg 100 101 70-130 <br /> cis-1,3-Dichloropropene 100 2.5 ug/kg 100 100 70-130 <br /> Toluene 105 2.5 ug/kg 100 105 70-130 <br /> trans-1,3-Dichloropropene 100 2.5 ug/kg 100 100 70-130 <br /> 1,1,2-Trichloroethane 100 2.5 ug/kg 100 100 70-130 <br /> 1,3-Dichloropropane 99.3 2.5 ug/kg 100 99.3 70-130 <br /> Dibromochloromethane 99.0 2.5 ug/kg 100 99.0 70-130 <br /> Tetrachloroethene 86.4 2.5 ug/kg 100 86.4 70-130 <br /> 1,2-Dibromoethane(EDB) 99.1 2.5 ug/kg 100 99.1 70-130 <br /> Chlorobenzene 103 2.5 ug/kg 100 103 70-130 <br /> 1,1,1,2-Tetrachloroethane 103 2.5 ug/kg 100 103 70-130 <br /> Ethylbenzene 108 2.5 ug/kg 100 108 70-130 <br /> m,p-Xylene 215 5.0 ug/kg 200 107 70-130 <br /> o-Xylene 108 2.5 ug/kg 100 108 70-130 <br /> Styrene 108 2.5 ug/kg 100 108 70-130 <br /> Xylenes(total) 323 7.5 ug/kg 300 108 70-130 <br /> Bromoform 101 2.5 ug/kg 100 101 70-130 <br /> 1,1,2,2-Tetrachloroethane 103 2.5 ug/kg 100 103 70-130 <br /> Isopropylbenzene 109 2.5 ug/kg 100 109 70-130 <br /> 1,2,3-Trichloropropane 102 2.5 ug/kg 100 102 70-130 <br /> Bromobenzene 107 2.5 ug/kg 100 107 70-130 <br /> n-Propylbenzene 102 2.5 ug/kg 100 102 70-130 <br /> 2-Chlorotoluene 109 2.5 ug/kg 100 109 70-130 <br /> 4-Chlorotoluene 108 2.5 ug/kg 100 108 70-130 <br /> 1,3,5-Trimethylbenzene 108 2.5 ug/kg 100 108 70-130 <br /> tert-Butylbenzene 112 2.5 ug/kg 100 112 70-130 <br /> 1,2,4-Trimethylbenzene 108 2.5 ug/kg 100 108 70-130 <br /> sec-Butylbenzene 108 2.5 ug/kg 100 108 70-130 <br /> 1,3-Dichlorobenzene 108 2.5 ug/kg 100 108 70-130 <br /> p-Isopropyltoluene 108 2.5 ug/kg 100 108 70-130 <br /> 1,4-Dichlorobenzene 107 2.5 ug/kg 100 107 70-130 <br /> 1,2-Dichlorobenzene 107 2.5 ug/kg 100 107 70-130 <br /> Ethyl tert-butyl ether 100 2.5 ug/kg 100 100 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 7 of 18 <br />