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1 1 ~~ 1 1 1 MINREC, INC. ANNIIAL HYDROLOGIC REPORT PAGE 3 The No. 3 Mme, (Outfall 007), has two separate sources of discharge, One is from a point source (spring) within the Mme that is piped directly to the surface. This good quality point source of water has beat the source of the discharge from the No. 3 Mute, (Outfall 007), since the mine was sealed in 1986. The water level in the mine has fluctuated since that time but no water has discharged directly from the mine in ten (10) years. During the second quarter of 1995, wet spring weather caused the mine to fill and begin discharging iron laden water. In order to treat this iron laden water, a 4" diameter pipe was installed to convey the discharge from the No. 3 mine to the long pond. The discharges from the mines were combined effective August 11, 1995. All of the discharge water from the No. 3 Mme was combined with the discharge from the No. 1 Mine during 1996. The combined dischazge from the mines is treated by the passive water treatment system and is discharged through Outfa11001. A table of the No. 3 Mme water level measurements and a graph which shows the increase and decrease in water level over time are presented in Appendix III. The water level m the mine is measured through an open monitoring hole which penetrates the mine opening. The water level in the mine was basically stable during 1996. MINE WATER QUALITY The discharge from the No. 3 Mine and No. 1 Mine were combined on August 11, 1995. The average flow measurements from the No. 3 Mme for the period 1990 through 1994 is summarized below. NO. 3 MINE DISCHARGE Year 1490 1941 1992 1993 1994 Flow m 6.7 6.8 5.5 10.4 8.0 Water from the No.l Mme and No. 3 Mme continue to be treated by the passive water treatment system. The quality of the discharge is presented in a table in Appendix IV. The quality of the discharge from the mine shows little change from prior years except the conductivity, total dissolved solids and iron in the mine dischazge has continued to decrease each yeaz. The treatment provided ' by the algae and cattails in the long pond is believed to contribute to the improved quality of the mine discharge. The following table presents arithmetic averages of flow and quality measurements taken at Outfall 001. Outfall 001 is the discharge point for the passive water treatment system. As of August 11, 1995, the discharge from Outfall 001 is the combined discharge from the No. 1 Mme and the No. 3 1 Mine.