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1 <br /> ' TABLE 7 <br /> ' SUMMARY OF PCH, Pb AND GASOLINE/DIESEL CONCENTRATIONS <br /> ' MAINTENANCE SHOP DITCH <br /> DEPTH PCB Pb GASOLINE/DIESEL <br /> ' SAMPLE I.D. (INCHES) (mg/kg) (mg/kg) (mg/kg) <br /> P5-A 10 - 12 <0.1 14 <100 <br /> ' P5-B 12 - 24 NA 15 NA <br /> P6-A 18 - 30 <0.1 100 1000 (diesel) <br /> P6-B 30 - 42 NA 8.4 NA <br /> ' P7-A 3 - 12 <0.1 48 <100 <br /> P7-B 12 - 24 NA 110 <100 <br /> P19-A 0 - 6 <0.1 190 NA <br /> BG-1 0 - 6 NA 22 NA <br /> BG-2 0 - 6 NA 31 NA <br /> ' Notes: <br /> 1. NA -- Not analyzed <br /> 2. TTLC value for Pb -- 1000 mg/kg <br /> 1 <br /> ' - 17 - <br /> 2611E <br />