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21 October 2020 <br />Project No. 14-3002 <br />Page 10 of 15 <br />1.8 mg/kg, respectively. <br />Analytical results of samples collected at five (5) feet bsg are summarized in Tables 1 <br />and 4. PCB results and the approximate extent of PCB-impacted soil above the DTSC- <br />SL are depicted in Figure 6. <br /> <br /> <br />5.3.4. Soil and Waste Samples: 7 Feet <br /> <br />A total of nineteen (19) soil samples and two (2) waste samples were analyzed from <br />borings B44 through B49, B55 through B68 and B79. The following is a summary of <br />laboratory results: <br /> <br /> PCBs were detected in a total of four (4) soil samples at concentrations of <br />320 mg/kg in B46, 21 mg/kg in B47, 0.32 mg/kg in B59 and 0.19 mg/kg in B64. <br /> PCBs were detected in the waste samples at concentrations of 1.1 mg/kg in B48 <br />and 3.1 mg/kg in B68. <br /> PCBs were detected above the DTSC-SL and ESL in four (4) samples. <br /> The maximum concentrations of PCBs were detected in B46, B47, B48 and B68 <br />at concentrations of 320 mg/kg, 21 mg/kg, 1.1 mg/kg and 3.1 mg/kg, respectively. <br /> <br />Analytical results of samples collected at seven (7) feet bsg are summarized in Tables 1 <br />and 5. PCB results and the approximate extent of PCB-impacted soil above the DTSC- <br />SL are depicted in Figure 7. <br /> <br /> <br />5.3.5. Soil and Waste Samples: 10-15 Feet <br /> <br />A total of eight (8) soil samples and four (4) waste samples were analyzed from borings <br />B46 through B48, B50, B59, B64 and B68. The following is a summary of laboratory <br />results: <br /> <br /> PCBs were detected in two (2) soil samples at concentrations of 0.017 mg/kg in <br />B46-15 and 0.66 mg/kg in B48-10. <br /> PCBs were detected in two (2) waste samples at concentrations of 1.1 mg/kg in <br />B50-10 and 3.0 mg/kg in B68-10. <br /> PCBs were detected above the DTSC-SL in three (3) samples and above the ESL <br />in four (4) samples. <br /> The maximum concentrations of PCBs were detected in the waste samples at <br />concentrations of 1.1 mg/kg (B50) and 3.0 mg/kg (B68). <br />