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Monitoring Rerutrt <br />' Surface water chemistry was observed to be stable over the ten year monitoring period (Table 1 <br />and Appendix n. The water may be classified as a mixed calcium magnesium-sulfate/bicarbon- <br />ate type water. The degree of ionization varied with season, being highest during low flow and <br />' lowest during high flow. The ratio of calcium to magnesium was generally consistent over the <br />seasons; however, there is a shift in the ratio of sulfate to bicarbonate, with bicarbonate being <br />more prevalent during high flow conditions. These ionic conditions also influenced the <br />' conductivity and TDS as exhibited in the graphs in Appendix I. <br />Analysis of trace metals indicates low concentrations. Aluminum and iron were detected in all <br />' samplings, higher values being reported during high flow events (Appendix n. Manganese and <br />zinc were also sampled and found in only trace amounts. <br />' Mining and reclamation operations at the Chimney Rock Mine appear to have little or no effect <br />on the quantity or quality of area surface waters. This may be due to the mines inactive status <br />during 1985 through 1989. Backfill and grading activities occurred in the Revision 1 Pit and <br />' Surface facilities during 1990 and 1991; however, sediment control ponds established on the <br />disturbed areas eliminated runoff of surface waters from the mine site. All NPDES fotms were <br />filed with the Department of Health during quarterly reporting periods. CDMG also received <br />' copies of these reports. Results of the annual pond survey conducted in October are contained <br />in Appendix III. <br />' GROUNDWATER <br />The three alluvial wells A-1, W-1 and W-5 were replaced and added to the monitoring program <br />in 1993. Water levels were measured during the quarterly samplings with water chemistry being <br />analyzed during the second and fourth quarters. All data is contained in Appendix II. <br />Water levels in the three wells varied seasonally. W-1 was dry during the third and fourth <br />quarters. <br />^ Water quality was analyzed from Wells A-1, W-1, and W-5. The water is considered a mixed <br />ion calcium/magnesium-sulfate/bicarbonate type. Well A-1 has a higher ion concentration than <br />' well W-5 as exhibited by the values of conductivity, TDS, and cation/anion analysis. Sodium <br />and magnesium concentrations were also higher in well A-1. <br />' 82.053/3/01-27-95(1:16pm) 6 <br />