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b. The October 20, 1997 analysis relates the acid base potential of <br /> the Terry Tunnel sediment ranging from -14.8 to -13.7; Table 2B <br /> (attached ) suggests anything less than -5 tons CaCO3 <br /> equivalent/1000 tons is unsuitable for use as a growth medium <br /> (potential root zone) . <br /> C. The copper content of the Terry Tunnel sediment ranges from 136 to <br /> 172 parts per million (ppm); Table D-2 of the consolidated permit <br /> relates the Lake Emma sediment copper content as 53.7 ppm; Table 1 <br /> shows normal uncontaminated soil copper ranges between 2-100 ppm; <br /> Table 3 suggests phy toxicity levels ranging between 40 and 100 ppm. <br /> d. The lead content of the Terry Tunnel sediment ranges from 380-420 <br /> ppm; Lake Emma sediments (Table D-2 , page D:4) were 204 ppm; Table <br /> 1 shows normal uncontaminated soil lead ranges from 2-200 ppm; <br /> Table 2B suggests soils with lead concentrations greater than 2 ppm <br /> are unsuitable for use as a growth medium; Table 3 suggests <br /> phy totoxic ranges from 2-200 ppm. <br /> e. Table 3 suggests manganese concentrations exceeding 60 ppm may be <br /> phy totoxic; Terry Tunnel sediments range from 160-199 ppm. <br /> f. Terry Tunnel sediment zinc concentrations range from 370-490 ppm; <br /> Lake Emma sediment zinc concentration (Table D-2 ) is related as 105 <br /> ppm; Table 1 suggests normal uncontaminated soils zinc <br /> concentrations range from 10-300 ppm; Table 3 sugests phy toxic <br /> levels of zinc concentrations to be 40 ppm or area-ter. <br /> g. Terry Tunnel sediments cadmium concentrations range from 6.2 -Co <br /> 9.34 ppm compared to Lake Emma 's 0.87 ppm cadmium concentration. <br /> 2. Please provide a schedule of transporting the Terry Tunnel sediments to <br /> Tailing Pond Number 3, as required in your consolidated permit. <br /> „dditionally, future disposal of Terry Tunnel sediments must occur atop <br /> Tailing Pond Number 3. <br />