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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 <br />08/23/21 14:28 <br />BlE <br />2108096-06 (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 />0.588 <br />0.588 <br />0.588 <br />0.588 <br />0.588 <br />0.588 <br />0.588 <br />mg/kg <br />/I <br />A_H0132 08/17/21 08/19/21 <br />/I <br />PCBs BY EPA 8082 <br />I I <br />I I <br />Surrogate: Decachlonabiphenyl <br />Surrogate: Tetrachloro-meta-xylene <br />Geophysical <br />30.8 % <br />43.6 % <br />% Recovery Limits <br />% Recovery Limits <br />50-150 <br />50-150 <br />S-06 <br />S-06 <br />11 oistu re 0.228 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 /> <br />Laboratory Representative Page 7 of 31