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-J The existing slope gradient on the east highwall is steeper than 4: I in some places, if m~ photos arc still currant. Since you plm, to reclaim that slope to 4: I, please describe whether further excavation hill occur there. What earthlvork will you employ to attain final 4: I slopes on the east wall of the pit? Will the fence be removed and nelc material pushed dolyn'> Or hill backtilling be used against [he slope'? As the pit is expanded and deepened. will the final slopes be created. such as be pushing n,a[cnal dolcn at ={: I gradients? You also stated that a large amount of oversized material has been accumulating, lvhich is [o be disposed of onsite is this to be done for all of i[. a[ [he termination of mining. or gmdualh during [he course of mining's Please clarifi' these items. Presumabh~ the pit will daylight on the hest, at some point during the course of mining. Please describe how close excavation or shaping kill occur to the proposed western boundary. Please be aware that you may not affect areas outside the boundaq. For example, if material is actually excavated out to the boundan-, it might only be safely performed by pulling material in with an excavator. If you plan to use a dozer [o push material up [o [he floor, you hill have ro allow room for operating equipment. Please describe the method or equipment you plan to use along the western limit of excavation. The present pit floor seasonally collects water from the east, which is drained off. It is either groundwater from irrigation seepage that has been intercepted and/or surface water from irrigation ntnoff that is received from the adjacent pasture on the east. A drain ditch has been cut across the floor to the hest [o reduce the amount impounded. Da you expect this to be a continuing problem as the pit is deepened or exp:u,ded in size'? Your exhibit states [hat groundwater will not be encountered (but the reclamation plan states that revegetation will be irrigated). Please clarify whether this is grow,dleater, whether it might be encountered in firture operations, and how it is to be managed in the hiture (such as by ditching, piping, daylighting, etc.). Please briefly describe the stonnwater n,anagemen[ to be used on the site, to control offsite sediment transport. Any stnictures involved might be added to your maps. Exhibit D -Reclamation Plan The Shavano Soil Conservation District's letter from 1996 includes a seed mix, lvhich is [he currently-approved seed mix. The overall plan is considered adequate, and d,cre are no changes. The only comment 1 should make here is that you also have a noxious weed control plan which has become a part of the reclamation plan (initiated in December 1999). The weed control should be implemented even during the mining stage, especially on topsoil stockpiles and areas recently topsoiled. Please describe whether you plan to reclaim the site to a„y degree during the mining stage, such as highwall shaping, topsoil replacement or revegetation, for areas lvhich will not be redisturbed by future activities. Exhibit E -Mining and Reclamation Maps As mentioned above, there may be inaccuracies in the maps. I will discuss each of the maps separately below. The mining plan map is a copy of the sketch I sent to you, in regard to the discussion of the boundary conflicts mentioned above. The map contains mm~erous boundan- errors, obsok[e notations, conflicting symbols, and missing information. Please review Rule 63.5, concerning map requirements. and submit a new map. The sketch I sent to you, even lvith items added to i[ is inadequate for this exhibit. Please do not reuse the sketch 1 sent you. The reclamation n,ap is also inadequate for this exhibit, for some of the same and some different reasons. The main reasons are: it shows existing ropognphy and not post-mining reclaimed topography, and it does not depict the entire permitted site. Phase review [he rule cued above :u,d submit a new map