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Excelchem Laboratories, Inc. <br />Arcadis Project: Stockton transformer <br />101 Creeksdie Ridge Court Suite 200 <br />Project Number: 30101128.0002 <br />Date Reported: <br />Rio Oso, CA 95678 <br />Project Manager: Drew Feucht 08/23/21 14:28 <br />B1B <br />2108096-03 (Solid) <br />Analyte Result <br />Reporting <br />Limit Units Batch <br />Date <br />Prepared <br />Date <br />Analyzed Method Notes <br />PCBs by GC/ECD <br />Aroclor 1016 <br />Aroclor 1221 <br />Aroclor 1232 <br />Aroclor 1242 <br />Aroclor 1248 <br />Aroclor 1254 <br />Aroclor 1260 <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />0.565 <br />0.565 <br />0.565 <br />0.565 <br />0.565 <br />0.565 <br />0.565 <br />mg/kg A_H0132 <br />11 <br />11 <br />11 <br />11 <br />08/17/21 08/19/21 <br />11 <br />/I <br />PCBs BY EPA 8082 <br />ft <br />11 <br />Surrogate: Decachlorobiphenyl <br />Surrogate: Tetrachloro-meta-xylene <br />Geophysical <br />24.3 % <br />43.3 % <br />% Recovery Limits <br />% Recovery Limits <br />50-150 <br />50-150 <br />S-06 <br />S-06 <br />Moisture 0.297 0.100 A H0173 08/12/21 08/20/21 % moisture <br />Excelchem 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 />Laboratory Representative <br /> Page 4 of 31