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there will be a connecting segment of drainage that will be at approximately 4H:1 V across the backfilled slope. At the upper end of this segment it seems that head-cutting could be a problem and at the bottom scouring could occur from higher velocities. Please describe what measures will be taken to transition the undisturbed drainages above the mining area across the last pit cut and into the reconstructed drainages on the pit bottom. As previously mentioned, another concern is the concentration of flows from two or three small watersheds into a single drainage that will now be handling increased flows. Is this drainage capable of receiving and safely conveying these additional flows? Please explain. During the pre-operational inspection, no noxious weeds were observed on the site. barge scale mining disturbances, such as this proposal, present ideal opportunities for the introduction and establishment of noxious weeds. Since the azea is relatively noxious weed free, the permitted area will need to be diligently monitored and maintained to control any noxious weed introductions or infestations, both during mining and once an area is reclaimed. Monitoring and control of noxious weeds is briefly mentioned in both Exhibit E and J, but mostly appears to be in apost-mining sense. However, with the amount of traffic during construction and once mining begins, a more detailed and active plan should be proposed. This plan should cleazly state that all noxious weed species will be controlled both during and after mining, commit to a monitoring and follow-up plan to be submitted with the annual report, and identify all control methods that will be used. The operator is encouraged to build in as much flexibility as possible so that a fully integrated approach to noxious weed control can be employed. 6.4.6 EXHIBIT F -Reclamation Plan Maa The Reclamation Plan Map appears to have been drawn at a scale of 1 "=1,000', rather than the scale (1"=2,000) shown in the title block. Other maps in the permit application are drawn at the scale of 1"=2,000'. The Division requires the map to extend to the north to show the planned drainage of the mine area as discussed in 6.4.4(c) above as well as the plant area. The post-mining contours do not reflect 4H:1 Vback-sloped highwalls azound the proposed mining limits as described in the narrative. In addition, it appears that the backfill has been manipulated significantly in order to achieve the proposed post-mining contours so that positive drainage could be attained and these slopes could be eliminated. As a result, the division is requesting that two-dimensional representative cross-sections of the pre- and post- mining contours be prepared for the disturbed area. This information must then be used to conduct a material balance calculation demonstrating how the proposed post-mining contours will be achieved. Please provide this information with your response.