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1/22/97 -z- effluent limitations. Christine asked if MCC could discharge Pond FW1 at the same time that MB1 was discharged so as to dilute the mine water discharge. I stated my opinion that MCC can discharge from any permitted discharge point, but that NPDES sampling would need to occur at th~~ designated point, prior to dilution from another discharge. I referred MCC to the Water Quality control Division (WQCD) for specific direction in this matter since their questions seemed to involve possible NPDES discharge and enforcement issues. I also stated that MCC should be sure that the water quality sampling being conducted on the North Fork of the Gunnison River, downstream of the mine, represents river water that has completely mixed with any mine water discharge. The downstream sample location is about 100 to 200 yards downstream from the discharge point, and the river sample location is along the river bank opposite the river bank where mine discharge enters the river. I explained that it is possible that the mine water discharge might remain along the sough edge of the river for some distance, and the sampling on the oppo~:ite bank may not represent a complete mix of upstream river water and discharged mine water. I asked if MCC is constructing seals in the flooding areas, and Christine indicated ghat three seals have been constructed, through which pump lines have: been installed. I asked Christine when we might expect the maps of the problem area, and she asked which maps? I reminded her of our conversation yesterday, with Henry, Christine and Paige at which time MCC promised a report of the incident which would include a map showing the location of the current inflow. Christine stated that we should get the materials in a day or two. I told her that something informal would be acceptable, but that we would like to see the inflow location, the fault projection, and the locations where water is being sumpect underground, designated on the submittal. I specifically asked if MCC had identified the projected location of this fault, and Christine stated that there is a map of the local fault patterns of the mining area, and that the map was hanging in MCC's big conference room. Christine admitted, however, that she was not awax-e of the specific fault locations. MCC agreed that continued updates would be provided. I stated that I understood the serious implications of this situation regarding the operational status of the mine, and that I was glad that no one had been hurt. I also stated that once the situation has been controlled, we will need to discuss the regulatory and environmental implicaitions of the water inflow situation.