Laserfiche WebLink
<br />. o+nd Wa ~~ va Bona <br />Water levels in the alluvial wells at the Edna Mine have remained constant <br />over the previous years with minor fluctuations occurring seasonally. <br />Elevations of the water in the alluvial wells and the spoils well are shown on <br />Figure 17. As suggested in the baseline studies, the occurrence of a drawdown <br />in any of the wells is anticipated only during mining at the base of the slope <br />near Trout Creek. <br />In reviewing the data, it is interesting to note that the spoils well has <br />also reached steady state. The equilbria of WR-1 is further evidenced by a <br />seep which has begun to express itself on the lower portion of west Ridge near <br />the elevation of Trout Creek. Additionally, the September, 1987 reading for <br />TR-1 shows the ground water level to be above ground level which was in fact <br />• the case. The location of TR-1 was inundated with water at the time. <br />Trout Creek Drainage Area <br />Water quality data gathered from the alluvial wells at the Edna Mine <br />cannot be used to make qualitative or quantitative statements about possible <br />impacts to the alluvial valley floor from mining activities at this point in <br />time. The reasons for this inability were stated in the baseline studies and <br />need to be reiterated. Well TR-1 is not suitable as an upstream background <br />site because it is located adjacent to an old underground mine and just down <br />gradient from a large swampy area where underflow from the Little Trout Creek <br />watershed surfaces before entering Trout Creek. In the case of TR-2 located <br />on the west side of Trout Creek, springs seep from the QtZ terrace immediately <br />to the west and these seepage waters enter the Qi1 terrace both upstream and <br />downstream of the well. As such, it is believed that TR-2 reflects the effect <br /> <br />