Figure 4.5 TDS for Selected Wells in the Hart Seam 32 



Figure 5.1 Water Quality Data from Discharge Pipe Location, South of 



Morrison Dam, 1990 and 1991 36 



Figure 6.1 Cookson Reservoir Mean Daily Water Levels for 1991 and 



Median Monthly Water Levels for 1981-1990 40 



Figure 6.2 Cookson Reservoir Water Quality Data for Boron, 1983 to 1991 42 



Figure 6.3 Cookson Reservoir Water Quality Data for Sulphate, 1983 to 1991 ... 42 



Figure 6.4 Cookson Reservoir Water Quality Data for Sodium, 1983 to 1991 .... 43 



Figure 6.5 Cookson Reservoir Water Quality Data for Chloride, 1983 to 1991 ... 43 



Figure 6.6 Cookson Reservoir Water Quality Data for TDS, 1983 to 1991 44 



Figure 6.7 Cookson Reservoir Water Quality Data for Manganese, 1983 to 1991 . 44 



Figure 6.8 Cookson Reservoir Water Quality Data for Strontium and Fluoride, 



1983 to 1991 45 



Figure 6.9 Box and Whisker Plots of Tissue Mercury Concentration in Fish 



from Cookson Reservoir from 1979 to 1991 47 



Figure 7.1 Ash Lagoon Water Levels and Polishing Pond Level, 1983 to 1991 . . 51 



Figure 7.2 Lagoon Water Quality Data for Conductivity and Polishing Pond 



Volume, 1983 to 1991 56 



Figure 7.3 Lagoon Water Quality Data for Vanadium and Polishing Pond 



Volume, 1983 to 1991 56 



Figure 7.4 Lagoon Water Quality Data for Chromium and Polishing Pond 



Volume, 1983 to 1991 57 



Figure 7.5 Lagoon Water Quality Data for Fluoride, Molybdenum and Polishing 



Pond Volume, 1983 to 1991 57 



Figure 7.6 Lagoon Water Quality Data for Sodium, Sulphate and Polishing 



Pond Volume, 1983 to 1991 59 



V - 



