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SunStar <br />Laboratories, Inc. <br />PROVIDING QUALITY ANALYTICAL SERVICES NATIONWIDE <br />25712 Commereentre Drive <br />Lake Forest, California 92630 <br />949.297.5020 Phone <br />949.297.5027 Fax <br />Brusca Associates Inc. Project: Lathrop 48 Acre Property <br />PO Box 332 Project Number: 137-002 Reported: <br />Roseville CA, 95661 Project Manager: Joe Brusca 05/16/17 12:00 <br />Polychlorinated Biphenyls by EPA Method 8082 - Quality Control <br />SunStar Laboratories, Inc. <br />Reporting Spike Source °/oREC RPD <br />Analyte Result MDL Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 7042839 - EPA 3550 ECD/GCMS <br />Blank (7042839-BLKl) <br />Prepared: 04/28/17 Analyzed: 05/03/17 <br />,Surrogate: Tetrachloro-meta-xylene <br />9.42 <br />ug/kg <br />9.90 95.1 35-140 <br />Surrogate: Decachlorobiphenyl <br />10.9 <br />9.90 110 35-140 <br />PCB -1016 <br />ND <br />10 <br />" <br />PCB -1221 <br />ND <br />10 <br />" <br />PCB -1232 <br />ND <br />10 <br />" <br />PCB -1242 <br />ND <br />10 <br />" <br />PCB -1248 <br />ND <br />10 <br />" <br />PCB -1254 <br />ND <br />to <br />" <br />PCB -1260 <br />ND <br />10 <br />" <br />LCS (7042839-BSl) <br />Prepared: 04/28/17 Analyzed: 05/03/17 <br />Surrogate: Tetrachloro-meta-xylene <br />9.32 <br />ugJkg <br />10.2 91.4 35-140 <br />Surrogate: Decachlorobiphenyl <br />10.9 <br />10.2 107 35-140 <br />PCB -1016 <br />83.0 <br />10 <br />102 81.3 40-130 <br />PCB -1260 <br />84.0 <br />10 <br />102 82.3 40-130 <br />Matrix Spike (7042839-MS1) <br />Source: T171074-20 <br />Prepared: 04/28/17 Analyzed: 05/03/17 <br />.Surrogate: Tetrachloro-meta-xylene <br />7.62 <br />ug/kg <br />9.90 77.0 35-140 <br />Surrogate: Decachlorobiphenyl <br />8.59 <br />9.90 86.8 35-140 <br />PCB -1016 <br />74.7 <br />10 <br />99.0 ND 75.4 40-130 <br />PCB -1260 <br />78.1 <br />10 <br />99.0 ND 78.9 40-130 <br />Matrix Spike Dup (7042839-MSD1) <br />Source: T171074-20 <br />Prepared: 04/28/17 Analyzed: 05/03/17 <br />Surrogate: Tetrachloro-meta-xylene <br />8.23 <br />ug/kg <br />9.90 83.1 35-140 <br />Surrogate: Decachlorobiphenyl <br />9.32 <br />9.90 94.1 35-140 <br />PCB -1016 <br />81.8 <br />10 <br />99.0 ND 82.6 40-130 9.11 30 <br />PCB -1260 <br />67.5 <br />10 <br />99.0 ND 68.2 40-130 14.5 30 <br />SunStar Laboratories, Inc. <br />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 />Page 84 of 94 <br />