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ROAD CULVERTS: ACCESS ROAD: At the time of this PAR, the final number, location and description of all culverts on the access road were not known. 8. Please have the operator submit information on all culverts berms and crossings proposed for the access road. Please have the operator include the location of all culverts on a map in the permit. RELOCATED CHANNEL: The Division's greatest concern deals with the relocated channel. The Division intention is to insure that: 1) the channel is adequately sized to carry a 100 year event, 2) the relocated channel does not erode back to its original location during mining, thus possibly resulting in inflows into the north portal and 3) the channel is relocated after mining back to its original location. The channel as modeled by the operator will carry a 100 year, 24 hour event. Velocities generated by both the operator's and the Divisions models are close to or in excess of six feet per second, predictably erosive. There is some concern by the Division, however, that a better event to model might be an event of equal magnitude occurring over a shorter duration; resulting perhaps in greater runoff. There is also some concern that channel flows were modeled for open channel, uniform flow conditions when the channel in question is turned resulting in increased erosion at the outside edge (toward the portal opening). 9. Please have the operator describe the substrate where the channel is to be relocated. 10. Please have the operator designate the relocated channel on Exhibit 58 as a temporary diversion, with the channel to be reconfigured to its original location after mining. 11. Please have the operator consider moving the location of the outlet to the relocated channel further to the north. This in order to more closely match its current location so as to reduce the bend and associated erosivities in the channel. 12. Please have the operator submit a description of how he proposes to protect the bottom and outside bend of the relocated channel both during and after mining. 13. Please have the operator give us an exhibit showing final reclamation plans for the 2 West Portal area; including final configuration of the relocated channel, portals, mine seals, post mining contours.