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Mr. Phil Schmidt <br />March 2~, 1998 <br />Page 4 <br />balance for the NW Panels sump. The maximum estimated NW Panels sump outflow seepage rate of <br />8.4 gallons per minute, presented by MCC with TR80, may or may not be accurate. Therefore, it is <br />essential that the actual sump outflow rate be defined. <br />9) Has MCC conducted controlled sump inflow and outflow studies to determine the actual NW <br />Panels sump seepage rate? If so, what was the methodology employed by MCC and what <br />were the results of the study? <br />10) If such a study has not occurred, is MCC willing to conduct a controlled water balance study <br />to determine the actual seepage rate from the sump? If so, please present a methodology, and <br />implementation plan. <br />l 1) Please describe the amount of water pumped into the 1 NW - 7 NW Panels during 1995, 1996, <br />1997, and 1998. Provide a monthly accounting of any waters pumped into, discharged to, or <br />otherwise collected in the panels including inflow rates, inflow locations and inflow duration. <br />12) Please describe the amount of water pumped out of the 1 NW - 7 NW Panels during 1995, <br />1996, 1997, and 1998. Please provide a monthly accounting of any waters removed from the <br />1 NW through 7 NW Panels, including outflow rates, dischazge locations, and dischazge <br />durations. <br />l3) The WWE memorandum of February 18, 1998, item #5, states that the water level at the Lone <br />Pine seal has been relatively constant since the filling of the NW Panels sealed sump. The <br />TR80 also indicates that a water sample was obtained at [iris location sometime prior to the <br />TR80 response submitted in September 1997. However, on December 2, 1997, MCC <br />personnel stated that the water level in the sump was not at a level sufficient to allow <br />discharge at the Lone Pine seals, and that it was their estimate that the introduction of another <br />2 acre-feet of water to the PIW Panels would be needed to initiate pumping from Lone Pine. <br />Please clarify this possible discrepancy. <br />14) When did pumping and discharge initiate from the Lone Pine discharge location? <br />15) Please provide a detailed description of all pump and pipe placements since 1995. Provide <br />piping flow diagrams, pump locations, pumping rates and pumping durations. <br />Fault Water Routing <br />Information concerning routing of water generated at the faults is inconsistent or inadequate. To date, <br />there is no evidence of any plausible source of heat for the Edwards Mine discharge, other than the <br />warm fault water transferred to the NW Panels sump by MCC. Direct transport of waters ranging <br />from 84° F to 89° F, as observed a[ the B East i~fains (BEM) and Southeast Head Gate (SEHGj fault <br />inflows, to the NW Panels sump would explain the water temperatures now observed at the Edwazds <br />Portal. The written record, and statements made by both MCC and BCC personnel indicate possible <br />