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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 23EO345-EPA 5030 GCMS <br /> LCS(23E0345-BS1) Prepared:05/18/23 Analyzed:05/19/23 <br /> Chlorobenzene 20.4 1.0 ug/1 20.0 102 81.1-121 <br /> 1,1-Dichloroethene 18.9 1.0 20.0 94.4 69.9-130 <br /> Trichloroethene 17.2 1.0 20.0 85.8 84.9-120 <br /> Benzene 16.9 0.50 20.0 84.5 78.1-123 <br /> Toluene 16.6 0.50 20.0 83.1 79.6-123 <br /> Surrogate:4-Bromofluorobenzene 18.0 20.0 90.0 76.7-116 <br /> Surrogate:Dibromofluoromethane 20.4 20.0 102 78.7-127 <br /> Surrogate:Toluene-& 21.2 20.0 106 84.7-108 <br /> LCS Dup(23E0345-BSD1) Prepared:05/18/23 Analyzed:05/19/23 <br /> Chlorobenzene 19.4 1.0 ug/l 20.0 97.2 81.1-121 4.82 20 <br /> 1,1-Dichloroethene 17.6 1.0 20.0 88.1 69.9-130 6.90 20 <br /> Trichloroethene 16.5 1.0 20.0 82.6 80-120 3.80 20 <br /> Benzene 16.2 0.50 20.0 81.2 78.1-123 4.04 20 <br /> Toluene 15.8 0.50 20.0 79.2 75-123 4.74 20 <br /> Surrogate:4-Bromofluorobenzene 18.0 20.0 89.8 76.7-116 <br /> Surrogate:Dibromofluoromethane 20.6 20.0 103 78.7-127 <br /> Surrogate:Toluene-d8 21.2 20.0 106 84.7-108 <br /> Batch 23EO355-EPA 5030 GCMS <br /> Blank(23E0355-BLK1) Prepared:05/18/23 Analyzed:05/22/23 <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 /> Rebecca Traficanto,Project Manager Page 117 of 124 <br />