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BATTLE MOUNTAIN RESOURCES, INC. <br />ADEQUACY RESPONSES - ADDITIONAL INFORMATION <br />PAGE 6 OF 7 <br />The Division's concern was that the V-shaped channels would promote <br />erosion. Given the low velocities and the intent that the channel would <br />be overtopped in a large storm event, erosion is not expected to occur in <br />the channels. The channels will be monitored for sediment build-up and <br />erosion until reclamation release. If either of these conditions occurs, <br />the channel design will be re-evaluated. <br />3. Responses to a, b and care satisfactory. The information wanted in comment <br />d was the velocity for the PMP event in the grassed area and not the <br />velocity for the 1~0 year 29 hour event. Please provide. Figure F-3 should <br />be revised to show the energy dissipation structure at the base of the <br />spillway. In addition, the low flow spillway should be constructed in the <br />center of the spillway rather than off to one side. <br />The peak discharge onto the tailings disposal area is estimated at 9,220 <br />cfs during the PMP event. Routing of the flow through the tai lings disposal <br />area and reclamation spillway will reduce the peak discharge to 6,220 cfs <br />in the spillway. A discharge velocity of 8.1 feet per seconc is expected <br />in the revegetated section of the channel during the PMP event.. Attachment <br />3 presents the velocity calculations. <br />44. The comment was satisfactorily addressed in the January 9, 1990 submittal. <br />45. The comment was satisfactorily addressed in the January 9, 1950 submittal. <br />46. The comment was satisfactorily addressed in the January 9, 1990 submittal. <br />47. The comment was satisfactorily addressed in the January 9, 1990 submittal. <br />48. Revised Exhibit L has not yet been provided. <br />Based on agreement of the reclamation plan for the tailings disposal area, <br />Exhibit L, Reclamation Costs, will be presented for review. <br />49. Revised Exhibit L has not yet been provided. <br />Based on agreement of the reclamation plan for the tailings disposal area, <br />Exhibit L, Reclamation Costs, will be presented for review. <br />50. Revised Exhibit L has not yet been provided. <br />Based on agreement of the reclamation plan for the tailings disposal area, <br />Exhibit L, Reclamation Costs, will be presented for review. <br />51. Revised Exhibit L has not yet been provided. <br />Based on agreement of the reclamation plan for the tailings disposal area, <br />Exhibit L, Reclamation Costs, will be presented for review. <br />