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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 /> Methyl isobutyl ketone 203 5.0 ug/kg 254 ND 80.1 60-140 11.8 25 <br /> Surrogate:Dibromofluoromethane 50.5 ug/kg 50.8 ND 99.4 70-130 <br /> Surrogate:Toluene-d8 50.9 ug/kg 50.8 ND 100 70-130 <br /> Surrogate:Bromofluorobenzene 50.7 ug/kg 50.8 ND 99.8 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 17 of 18 <br />