2002-11-25_REVISION - M1977344 (2)

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[he extraction azea on a temporazy basis, provide your plans for typical stmctures and discuss when and how they would be used. 17. Explain how you will control sediment and offsite sedimentation where cut 3 daylights towazds the Arkansas River flood plain. Provide constmction plans for any necessazy sediment control facilities. (see Rule 3 Section 1.6) 18. Describe topsoil handling, stockpiling and protection of the topsoil from wind and water erosion if it is not used in reclamation within one yeaz. Show on your mine plan map locations for topsoil storage, if it is to be stored. If you can no[ determine specific locations for storage, show typical locations. The Division recommends that for your type of mining operation, where mine cuts aze continually backfilled, topsoil be applied to reclamation azeas immediately after being salvaged from an azea [o be mined. 19. Your choice of seeding method is broadcast seeding. This method may be appropriate if a tractor drawn mechanical seeder is used. However, the Division recommends that you consider drill seeding, since you will probably be planting relatively iazge flat areas. A drill seeder provides better contcot of planting depth, which is very important in seed germination and vegetation establishment. A drill seeder is usually also equipped with packing wheels to firm the seedbed, which is another important factor in seed germination. 20. Your method of covering broadcast seed with a grader is not acceptable as most of your seeding effort would be destroyed. If you broadcast seed, a light harrowing would cover more seed to an appropriate depth. The use of a grader does no[ provide enough control to bury seed at the proper depth, which is usually about ih inch. A grader operator can not control the blade well enough to bury seed that shallow. The use of a grader would remove seed from lazge azeas and buiy seed too deep in other azeas. Please agree to a light harrowing or dragging with a screen, if you want to broadcast the seed. 21. Does Holcim agree to revegetate in accordance with the CO-ECS-S form included with the application? The Division agrees with the seeding plan except for the broadcast seeding method. However, if you want to plant the seed using the broadcast method, you ~do not need to change your plan. The seeding rate, which has been doubled, is adequate. 22. You have committed to mechanical weed control (mowing), if form CO-ECS-S is part of your reclamation plan. Please commit to utilizing chemical weed control in the event that noxious weeds establish in the affected land azeas and aze not controlled by mowing. 23. Your application brings the plant azea into the permit. The stated fmat land use for the affected land under the proposed amendment is rangeland. Provide your plans for removal and disposal of all structures and other constructed facilities in the plant, including pavements and railroads, and preparation of the site for revegetation to the stated rangeland species. If some structures aze to remain upon reclamation, you must change the final land use for the azeas to be occupied by structures, and these must be compatible with local land use restrictions. Exhibit F -Reclamation Plan Map 24. According to the contour lines on your map, the steepest reclamation grades aze proposed to be 2hav; whereas, your reclamation plan indicates that the outer edges of the backfilled pit aze proposed to be left at the angle of repose of about 1.3vah. Please clarify this discrepancy. The presently approved maximum reclamation slope in your permit is 3hav. This is the slope the Division recommends and a slope that will help ensure that reclamation efforts aze successful. Your reclamation plan map contours must agree with the slopes stated in your reclamation plan. Please make the necessary changes accordingly (see Rule 6 Section 4.6(a)). 25. Please show on your map the proposed topography of the plant reclamation azea.