Laserfiche WebLink
i <br />EF1PIRE EIJERGY CORPORATION <br />No. 5 11ine Sump Water Quality <br />As stipulated in the permit for Empire Energy's Eagle No. 5 and Plo. 9 <br />14ines, an analysis of the water pumped from the new sump in the No. 5 <br />~4ines was to be performed. This report summarizes the results of the <br />testing and includes a comparison of this water (which was in the sump up <br />to 54 days) to fresh mine inflow water, a copy of the results (Tables 1 <br />and 2), and Stiff diagrams (Tables 3 and 4). <br />The sump water and the fresh water inflow water are of approximately the _ <br />same water quality. They are both strongly sodium-bicarbonate waters. <br />The sump 4~ater has slightly higher sulphate and lower alkalinity and <br />sodium levels. The dissolved solids values are similar with the fresh <br />mine inflow having a higher value. There is no significant difference in <br />the pH values. The metals are very close; many of the trace metals are <br />below the detection limit in the sump sample; 1.30 mg/L in the sum versus <br />0.40 in the fresh water for total and 0.29 mg/L in the sump and ;0.02 mg/L <br />in the fresh water for dissolved. <br />The comparison indicates that both waters would be suitable for <br />agricultural use and that there is no significant deterioration in water <br />quality with residence time in the sump. In fact, the sump water appears <br />to be slightly better in quality. This might be explained by the alkaline <br />pH which provides a favorable environment for the precipitation of metals <br />as well as for their adsorption by the wall rock. <br />