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1 <br /> <br />' Water Quality <br />' Summaries of the water quality data for Sites 7 and 84 are presented on Tables 55 and 57 and <br />on Figures 46 and 47. The data shows some typical seasonal variation: the water quality <br />' improves during spring runoff. The discharge from Pond D closely follows the water quality <br />trends in the underground mine discharge, except during spring runoff when the Pond D <br />' discharge has been diluted by surface runoff. <br />' The water quality of Pond D discharge is very similaz to the water quality of the underground <br />mine discharge. However, the Pond D dischazge has a significantly lower iron level. <br />1 <br />Summaries of the water quality data for Pond E (Station 62) are presented on Tables 59 and 60 <br />' and on Figures 50 and 51. Figures 50 and 51 also include data from Springs 303-0 and 303-1. <br />No NPDES limits were exceeded in the discharge water. In addition, no significant changes in <br />' the water quality were noted in the 1990 data. <br /> <br /> <br />1 <br />1 <br />1 <br /> <br /> <br /> <br />-13- <br /> <br />