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-2- ~6. The operator states that during mining, the pit will not impound water. According to Exhibit D-1, the pit area is a closed drainage basin. How / will the pit not impound water? c6YdAr4N,y~ -. ~,.,~c.1.d.~un~L., !7. Describe how the operator will control erosion on the site during mining. J Q ~Nr,N~~^""° V 8. Describe how the operator will control off-site transport of sediment to drainages north artd east of the affected lands. ~~~~Mt>>t `~ Exhibit F - Reclamation Plan 1. It is the staff's understanding that at least 4 inches of topsoil will be replaced. ~~l ~. With reference to Rules 6.1 and 6.5, in order for the operator to achieve the post-mining land use as described in the permit application, 1v y{~ S,~,Q u slopes cannot be too steep to be traversed by livestock. The staff 2H• ~ .~ feels that a 2H;1V slope .is too steep to be readily traversed by ~4~~ ~ livestock. In addition, 2H:1V slopes will increase the erosion hazard ~v~"'~'~_„~.• \ and inhibit vegetation establishment on the site thus decreasing the ~Yr~°/~ "~~I potential for reclamation success. The staff recommends slopes not to ~" exceed 3H:1V to satisfy performance standards. The Division of Wildlife ~'J confirms this recommendation. 3O. The operator states that from the base of the 2H:1V slope (south and west permit boundaries), a very gentle slope will be created toward the undisturbed drainages to the east and north of the affected lands to recreate the original natural positive drainage pattern. According to Exhibit F, reclamation will not recreate the natural drainage pattern but will produce a closed drainage basin. ~~''__~ ,,~~,,`` ? G~OM~'"t""r~"'"'~"""~la. The operator must submit more detailed information with respect to !- ¢„u.->?• the drainage patternpresent on the site prior to mining and how p~~ ,q,a„~.7, drainage consistent with pre-mine patterns will be re-established. b. If positive drainage will ndrbe re-established, the operator must ~~Jl;x.;.~ u,l,,w.x.faa, address in detail the hydrologic impacts as related to Rule 6.2, r~4 u~".~.I.aG.~~ ~„~,,,1,;,,. ~/4. It is the staff's understanding from Exhibit F that the access road will not remain following mining. 5. The staff recommends the following modifications to the revegetation plan. Ja. The proposed seeding rate should be doubled to conform to the USDA J recommendation of 40 PLS/s q, foot. « ~~~~~ ~ Add a nitrogen fixing forb to the seed mix. '(cl Add 50 lbs. available N and 50 lbs, available P per acre or add ~J fertilizer in accordance with soil test results.