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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 23EO355-EPA 5030 GCMS <br /> Matrix Spike(23E0355-MS1) Source:T231310-04 Prepared:05/18/23 Analyzed:05/22/23 <br /> Chlorobenzene 58.0 2.5 ug/kg 50.0 ND 116 65.2-125 <br /> 1,1-Dichloroethene 54.4 2.5 50.0 ND 109 60.9-131 <br /> Trichloroethene 52.2 2.5 50.0 ND 104 62.1-126 <br /> Benzene 54.0 2.5 50.0 2.41 103 65.3-127 <br /> Toluene 52.3 2.5 50.0 ND 105 64.3-125 <br /> Surrogate:4-Bromofluorobenzene 51.4 50.0 103 75.4-139 <br /> Surrogate:Dibromofluoromethane 48.5 50.0 97.0 73.1-125 <br /> Surrogate:Toluene-& 49.2 50.0 98.4 82.6-117 <br /> Matrix Spike Dup(23E0355-MSDI) Source:T231310-04 Prepared:05/18/23 Analyzed:05/22/23 <br /> Chlorobenzene 58.3 2.5 ug/kg 50.0 ND 117 65.2-125 0.498 20 <br /> 1,1-Dichloroethene 56.5 2.5 50.0 ND 113 60.9-131 3.77 20 <br /> Trichloroethene 54.6 2.5 50.0 ND 109 62.1-126 4.46 20 <br /> Benzene 55.7 2.5 50.0 2.41 107 65.3-127 2.99 20 <br /> Toluene 53.8 2.5 50.0 ND 108 64.3-125 2.84 20 <br /> Surrogate:4-Bromofluorobenzene 51.1 50.0 102 75.4-139 <br /> Surrogate:Dibromofluoromethane 51.4 50.0 103 73.1-125 <br /> Surrogate:Toluene-d8 49.7 50.0 99.4 82.6-117 <br /> Batch 23EO358-EPA 5030 GCMS <br /> Blank(23E0358-BLK1) Prepared&Analyzed:05/19/23 <br /> Bromobenzene ND 2.5 ug/kg <br /> Bromochloromethane ND 2.5 <br /> Bromodichloromethane ND 2.5 <br /> Bromoform ND 2.5 <br /> Bromomethane ND 2.5 <br /> n-Butylbenzene ND 2.5 <br /> sec-Butylbenzene ND 2.5 <br /> tert-Butylbenzene ND 2.5 <br /> Carbon tetrachloride ND 2.5 <br /> Chlorobenzene ND 2.5 <br /> Chloroethane ND 2.5 <br /> Chloroform ND 2.5 <br /> Chloromethane ND 2.5 <br /> 2-Chlorotoluene ND 2.5 <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 /> 7JLO� 7t I <br /> Rebecca Traficanto,Project Manager Page 120 of 124 <br />