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~ • Exhibit C - Prc-mining and Minine Plan Mates As noted above, there are several structures depicted on this map which may be located within easements, though the easements are mostly not shown. Please ensure that all easements. [he names of the easement holders and stmctures' owners are shown. The San Luis Central Railroad and its easement are shown at the east end of dte proposed permitted area. The note pertaining to the right-of--way (easement) states that it is "100 feet." Is that its total vvidth or a partial width measured from the centerline? Does the rail line itself or any part of the easement lie on any part of the permit area? Please clarify. Similar questions exist for the 200-foot non-mining buffer for the power and phone line and natural gas line crossing the proposed pennitted area. Is the 200-foot buffer defined as a setback distance between any nuning disturbance and the nearest utility feature, or is it simply the full width of the buffer, or is it defined from a centerline (or other feature) to an edge of the buffer? Please clarify. I will explore this further under Exhibit D below. An entry gate and road are shown on the north side of the area to be mined, apparently affording access to the site from North Farm Road. A segment of this road is outside the proposed permit boundary, in the 200-foot setback. Does this 200-foot segment of road currently exist? If the road does not exist and it is to be used for pit traffic, or if it does exist but must be substantially upgraded for pit traffic, it must be included in the permitted acreage. Please clarify. Also, please state whether there will be another permit area entrance or haul road (such as through the ranch headquarters or near the proposed rail spur). There are a couple of map symbols used which are not clear. One is located in the eastern 80 acres along the natural drainageway, and possibly depicts wetlands or wooded areas. The other symbol also occurs along drainageways but also occurs by itself, and may indicate ponds or wooded areas. These symbols are relevant because they depict areas either within or downstream from the affected area. Please clarify. The soil and vegetation map contains a few errors and omissions. There is no vegetation information shown, though perhaps none is needed. Please review the requirement and provide any needed vegetation information, or clarify if no such information is required. The soil type delineations on the soil and vegetation map are incorrect. Your map delineates four soil types, though in fact there are eight types present and clearly shown on my copy of the 1980 Rio Grande County Area soil survey. One major type, San Arcacio loam, is not depicted though it covers almost 20 acres. Please revise the map to include the corrected soil type delineations. I will mention incomplete soil type information below under Exhibit 1. Exhibit D -Mining Plan You have stated (in Exhibit E) that backsloping of the pit will be performed as excavation proceeds. I interpret this to mean that the final reclamation gradient of 3: I (within the elevational limits defined by the water level) will be created continually as the pit is excavated. I also interpret this to mean that the 3:1 gradient will be created on all pond margins, regardless of whether the pond margins are ur their final locations or interim locations. Please clarify this detail since it will greatly affect the bond amount. There are several types of equipment which may be used for simply excavating the pit, even a wet pit. However, since you stated that no devvatering will occur during mining or reclamation for [he final slope grading, the choices of equipment to be used for establishing the fmal pond slope gradient are limited. Please clarify what will be used for this task. You stated drat the aggregate deposit [o be mined is 2~ to 30 feet deep, with bedrock underlying it. However, i[ is not clear how deep you intend to mine. Please comment.