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Mr. Phil Schmidt March 25, 1998 Page 4 balance for the NW Panels sump. The maximum estimated NW Panels sump outflow seepage rate of 8.4 gallons per minute, presented by MCC with TR80, may or may not be accurate. Therefore, it is essential that the actual sump outflow rate be defined. 9) Has MCC conducted controlled sump inflow and outflow studies to determine the actual NW Panels sump seepage rate? If so, what was the methodology employed by MCC and what were the results of the study? 10) If such a study has not occurred, is MCC willing to conduct a controlled water balance study to determine the actual seepage rate from the sump? If so, please present a methodology, and implementation plan. 11) Please describe the amount of water pumped into the 1 NW - 7 NW Panels during 1995, 1996, 1997, and 1998. Provide a monthly accounting of any waters pumped into, discharged to, or otherwise collected in the panels including inflow rates, inflow locations and inflow duration. 12) Please describe the amount of water pumped out of the 1 NW - 7 NW Panels during 1995, 1996, 1997, and 1998. Please provide a monthly accounting of any waters removed from the 1 NW through 7 NW Panels, including outflow rates, dischazge locations, and dischazge durations. 13) The WWE memorandum of February 18, 1998, item #5, states that the water level at the Lone Pine seal has been relatively constant since the filling of the NW Panels sealed sump. The TR80 also indicates that a water sample was obtained at this location sometime prior to the TR80 response submitted in September 1997. However, on December 2, 1997, MCC personnel stated that the water level in the sump was not at a level sufficient to allow discharge at the Lone Pine seals, and that it was their estimate that the introduction of another 2 acre-feet of water to the NW Panels would be needed to initiate pumping from Lone Pine. Please clarify this possible discrepancy. 14) When did pumping and dischazge initiate from the Lone Pine discharge location? l5) Please provide a detailed description of all pump and pipe placements since 1995. Provide piping flow diagrams, pump locations, pumping rates and pumping durations. Fault Water Routine Information concerning routing of water generated at the faults is inconsistent or inadequate. To date, there is no evidence of any plausible source of heat for the Edwards Mine discharge, other than the warm fault water transferred to the NW Panels sump by MCC. Direct transport of waters ranging from 84° F to 89° F, as observed at the B East Mains (BEM) and Southeast Head Gate (SEHG) fault inflows, to the NW Panels sump would explain the water temperatures now observed at the Edwards Portal. The written record, and statements made by both MCC and BCC personnel indicate possible