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SunStar 25712 Commercentre Drive <br /> Laboratories, Inc. Lake Forest,California 92630 <br /> PROVIDING QUAuTY ANALYTICAL SERVICES NATIDNWine 949.297.5020 Phone <br /> 949.297.5027 Fax <br /> Brusca Associates Inc. Project: Anderson Barn Grover Ranch <br /> PO Box 332 Project Number: 260-004 Reported: <br /> Roseville CA,95661 Project Manager: Joe Brusca 07/10/23 10:36 <br /> Volatile Organic Compounds by EPA Method 8260B-Quality Control <br /> SunStar Laboratories,Inc. <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 23EO358-EPA 5030 GCMS <br /> Matrix Spike(23E0358-MS1) Source:T231310-26 Prepared&Analyzed:05/19/23 <br /> Chlorobenzene 53.4 2.5 ug/kg 50.0 ND 107 65.2-125 <br /> 1,1-Dichloroethene 55.4 2.5 50.0 ND ill 60.9-131 <br /> Trichloroethene 51.4 2.5 50.0 ND 103 62.1-126 <br /> Benzene 53.2 2.5 50.0 0.470 106 65.3-127 <br /> Toluene 50.0 2.5 50.0 ND 100 64.3-125 <br /> Surrogate:4-Bromofluorobenzene 56.7 50.0 113 75.4-139 <br /> Surrogate:Dibromofluoromethane 51.8 50.0 104 73.1-125 <br /> Surrogate:Toluene-& 50.6 50.0 101 82.6-117 <br /> Matrix Spike Dup(23E0358-MSD1) Source:T231310-26 Prepared&Analyzed:05/19/23 <br /> Chlorobenzene 55.1 2.5 ug/kg 50.0 ND 110 65.2-125 3.08 20 <br /> 1,1-Dichloroethene 58.9 2.5 50.0 ND 118 60.9-131 6.02 20 <br /> Trichloroethene 53.6 2.5 50.0 ND 107 62.1-126 4.21 20 <br /> Benzene 55.1 2.5 50.0 0.470 109 65.3-127 3.47 20 <br /> Toluene 51.5 2.5 50.0 ND 103 64.3-125 3.01 20 <br /> Surrogate:4-Bromofluorobenzene 58.2 50.0 116 75.4-139 <br /> Surrogate:Dibromofluoromethane 51.8 50.0 104 73.1-125 <br /> Surrogate:Toluene-d8 50.0 50.0 99.9 82.6-117 <br /> SunStar Laboratories,Inc. The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety. <br /> Rebecca Traficanto,Project Manager Page 123 of 124 <br />