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state Rea. Low Iran~~~~ivity rates and the fact that the mine is located in a • rec3~arge area suggested that drawdowns due to pit inflows would have little or no effect on regional domestic and livestock wells. Gaud water inflows into minin3 pits have not been monitored at the Seneca II Mine since these calculations were made, so .it is diffiarlt to assess whether the pit inflow estimates are accurate. Generally, water production in the mine pits has been minor, and it has rarely been necessary to use purtgs to remove water fran the pits. `There have been no instar~s of pit inflows causirg nearby domestic or livestock wells to dewater. Water production should be extremely laa during the next five years of minirg. Mine activities will be concentrated in the northeast portion of the permit area (i.e., the Wolf Creek pit). Wolf Creek coal will primarily be mined and, as noted above, this seam produces negligible amamts of water. 7.he Wadge Coal seam will also be mined alorg the eastern edge of the permit area, but due to a small recharge area, pit inflows are expected to be very low. Recent mining of the Wadge Goal in this area has produced very little water. E. SPrl;mont Aaamiulation isl Sortima.,t Ponds As outlined in TR-15 of Permit C-80-005, Seneca Coal Company has established a program to monitor sediment pond storage capacities at the Seneca II Mine. 'Ihe purpose of this monitoring plan is to create a sediment yield history for each pond and to provide for advance notice of sediment clean~ut work. Capacity surveys are wrducted at ~~~ntation Ponds 00~ and 003 once every five years, and surveys are conducted at Ponds 004 and 008 once every two years. 'Ihe results of these surveys are provided in the Seneca II Mine Annual Reclamation Reports. A summary of the results of ~;,m~t pond surveys as of July 1993 is shown in Table 7-97. Where data are available and meaningful, • sediment appears to be collecting in the ponds at a rate of 7-333 Revised 10/17/94