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TR-A with significant dilution being observed at each successive monitoring point along the mine area. The dilution was caused by the low concentrations present in water exiting from the mine vicinity. All the manganese values ' observed, except May, 1984, are consistent with the baseline values. The relatively high values of manganese observed at TR-C (0.13 mg/1) and TR-D ' (0.16 mg/1) during May of 1988 do not appear to be related to mining activity as an elevated concentration was not observed at TR-B (0.09 mq/1) which is immediately downstream of the active mine. ' Orthophosphate, nitrite, unionized ammonia, and dissolved aluminum were added to the monitoring program in 1988. As such, inadequate information has ' been gathered on these parameters to enable trend analyses. All values obtained during 1988 for these parameters were low with most being below ' detection limits (see appendix). IV. Ground Water Ground water Elevations Water levels in the alluvial wells at the Edna Mine have remained constant ' over the previous years with minor fluctuations occurring seasonally. Elevations of the water in the alluvial wells and the spoils well are shown in Figure 7. As suggested in the baseline studies, the occurrence of a drawdown in any of the wells is anticipated only during mining at the base of the slope near Trout Creek. ' in reviewing the data, it is interesting to note that the spoils well has also reached steady state. The equilibrium of WA-1 is further evidenced ' through the surface expression of a spring on the lower portion of West Ridge near the elevation of Trout Creek. ' Ground Water Quality ' Comparisons of water quality data gathered from the alluvial wells at the Edna Mine must be exercised with caution due to the differing stratigraphic units intersected along Trout Creek adjacent to the various wells. The alluvium in the vicinity of Well TR-1.5 intersects st ratigraphy above the Wadge coal seam 1