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CASTLE ANALYTICAL LABORATORY <br />Environmental Testing Services 2333 Shuttle Drive, Atwater, CA 95301 <br />Phone: (209) 384-2930 <br />Certificate No. 2480 <br />Fax: (209) 500-1848 <br />Polychlorinated Biphenyls (PCBs) by GC - Quality Control <br />Castle Analytical Laboratory <br /> <br />Reporting Spike Source °/.12E C RPD <br />A nalyte Result N1DL Limit Units Level Result °A,REC Limits RPD Limit Notes <br />Batch B108076 - EPA 3550B <br />Blank (B108076-BLK1) Prepared: 08/28/21 Analyzed: 08/29/21 <br />Surrogate: 2,4,5,6 Tetrachloro-m-xylene 0.0434 mg/kg wet 0.0400 108 60-140 <br />Aroclor-1016 ND 0.016 0.050 <br />Aroclor-1221 ND 0.040 0.050 <br />Aroclor-1232 ND 0.016 0.050 <br />Aroclor-1242 ND 0.016 0.050 <br />Aroclor-1248 ND 0.016 0.050 <br />Aroclor-1254 ND 0.0080 0.050 <br />Aroclor-1260 ND 0.0080 0.050 <br />Aroclor-1268 ND 0.0080 0.050 <br />LCS (B108076-BS1) Prepared: 08/28/21 Analyzed: 08/29/21 <br />Surrogate: 2,4,5,6 Tetrachloro-m-xy1ene 0.0450 mg/kg wet 0.0400 112 60-140 <br />Aroclor-1016 1.03 0.016 0.050 0.800 129 70-130 <br />Aroclor-1260 0.396 0.0080 0.050 II 0.400 98.9 70-130 <br />LCS Dup (B108076-BSD1) Prepared: 08/28/21 Analyzed: 08/29/21 <br />Surrogate: 2,4,5,6 Tetrachloro-m-xylene 0.0450 mg/kg wet 0.0400 112 60-140 <br />Aroclor-1016 1.03 0.016 0.050 0.800 128 70-130 0.505 20 <br />Aroclor-1260 0.392 0.0080 0.050 0.400 98.1 70-130 0.812 20 <br />Matrix Spike (B108076-MS1) Source: 2108101-05 Prepared: 08/28/21 Analyzed: 08/29/21 <br />Surrogate: 2,4,5,6 Tetrachloro-m-xylene 0.0527 mg/kg dry 0.0467 113 60-140 <br />Aroclor-1016 1.14 0.019 0.050 0.933 ND 122 70-130 <br />Aroclor-1260 0.458 0.0093 0.050 0.467 ND 98.2 70-130 <br />Matrix Spike Dup (B108076-MSD1) Source: 2108101-05 Prepared: 08/28/21 Analyzed: 08/29/21 <br />Surrogate: 2,4,5,6 Tetrachloro-m-xylene 0.0531 mrkg dry 0.0467 114 60-140 <br />Aroclor-1016 1.14 0.019 0.050 0.933 ND 122 70-130 0.123 20 <br />Aroclor-1260 0.458 0.0093 0.050 0.467 ND 98.1 70-130 0.102 20 <br />Clan J. Cone / Technical Manager <br />Page 15 of 21