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Sun Star 25712 Commercentre Drive <br /> Laboratories, Inc. Lake Forest,California 92630 <br /> PR!]V1DING QOALnv ANnrr7ieAc SEsvices NA'rlOWwmi- 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 08/23/23 14:47 <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 23HO273-EPA 5030 GCMS <br /> LCS(23H0273-BS1) Prepared&Analyzed:08/21/23 <br /> Chlorobenzene 21.6 1.0 ug/I 20.0 108 81.1-121 <br /> 1,1-Dichloroethene 18.1 1.0 20.0 90.7 69.9-130 <br /> Trichloroethene 22.6 1.0 20.0 113 74.9-133 <br /> Benzene 20.5 0.50 20.0 103 78.1-123 <br /> Toluene 21.4 0.50 20.0 107 79.6-123 <br /> Surrogate:4-Bromofluorobenzene 20.8 20.0 104 84.2-108 <br /> Surrogate:Dibromofluoromethane 17.4 20.0 87.2 78.7-127 <br /> Surrogate:Toluene-d8 19.7 20.0 98.4 92.6-108 <br /> LCS Dup(23H0273-BSD1) Prepared&Analyzed:08/21/23 <br /> Chlorobenzene 23.0 1.0 ug/l 20.0 115 81.1-121 6.36 20 <br /> 1,1-Dichloroethene 19.1 1.0 20.0 95.7 69.9-130 5.36 20 <br /> Trichloroethene 25.2 1.0 20.0 126 74.9-133 11.0 20 <br /> Benzene 21.6 0.50 20.0 108 78.1-123 5.26 20 <br /> Toluene 22.4 0.50 20.0 112 79.6-123 4.53 20 <br /> Surrogate:4-Bromofluorobenzene 20.8 20.0 104 84.2-108 <br /> Surrogate:Dibromofluoromethane 17.0 20.0 85.2 78.7-127 <br /> Surrogate:Toluene-d8 19.7 20.0 98.4 92.6-108 <br /> Batch 23H0284-EPA 5030 GCMS <br /> Blank(23H0284-BLK1) Prepared:08/21/23 Analyzed:08/22/23 <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 /> 4-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 /> 7 <br /> Rebecca Traficanto,Project Manager Page 86 of 90 <br />