2013-05-23_PERMIT FILE - M2013031

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Exhibit Page 11 EXHIBIT D - MINING PLAN GENERAL CONCEPT: General Site Information The 200 -acre New Hay Camp Pit is located on the southern edge of Hay Camp Mesa, dropping to near the northern breakpoint of the Lost Canyon. The portion of the site to be mined consists of alluvial and aeolian sand and gravel deposits of about 40 feet thickness overlaying clay deposits and shale bedrock, and is located on the top of Hay Camp Mesa, south of the divide between the Dolores River (to the north) and its tributary, Lost Canyon Creek. The top of Hay Camp Mesa is cut by numerous ravines, those on the site draining to Lost Canyon Creek (to the south). The lower portions of the site have been significantly modified to control and collect runoff and to create a large cultivated area which extends to the south and east of the proposed permit boundaries. The eastern edge of the site has been modified by construction of the high - voltage Western Area Power Administration line (including four large pylons) and the road used to inspect and maintain those pylons, along with significant erosion from heavy use and poor maintenance. Additional access roads and trails have been constructed on the site by past and present owners, not all shown on the maps, including a new, flatter -grade road near the WAPA easement allowing access to the mesa top, and fire trails along the west side of the site and fences. The mineable sand and gravel deposits are found primarily on the flat top of the mesa, sometimes exposed and sometimes covered with overburden and topsoil. On the site, there is approximately 44.2 acres considered the top of the mesa and the upper slopes which are covered by the deposits. There is some outwash of sand and gravel along the sides of the mesa and the ravines, in small deposits generally not workable economically. The material to be mined generally falls into two categories: a predominantly red material with a high fines content which can be processed and used as the surface of gravel roads; and a predominantly white material which is coarser and can be crushed and screened into a variety of sand and rock products for multiple uses. The thickness of mineable sand and gravel and the thickness of overburden varies enormously within a very short distance (both on the mesa top and along the upper portion of the south slope), frequently making mining of some areas unproductive. In addition, there are some deposits of mostly clay /silt overburden on the mesa top which requires removal to expose the desirable materials. The entire 200 -acre site drains into Lost Canyon, mostly via two unnamed drainages. A very small portion on the west edge of the site drains via a third drainage, and a small portion of the southeast corner of the site drains via overland flow and unmapped natural and man - caused erosion swales. The major drainage is controlled by the 1/4 -acre stockpond dam on the south boundary and a dugout in the SE corner; but currently no control for the western drainages. Elevation varies from 7110 (below the stockpond dam) to 7510 (on the north boundary). Vegetation ranges from man - cleared cropland /pasture to fairly dense pinyon - juniper woodland. For a detailed discussion of vegetation, please see Exhibit J. Operations Mining of the permit area will be done by McStone Aggregates LLC. The area to be mined (44.2 acres total) is the north portion of the site, bounded by the property /site line to the west, north and east, and elevation 7440 on the south, except for two sediment basins. Mining will begin in area K immediately west of the WAPA easement in the northeast (see Map C -2), with access via a permanent road with a flatter grade which crosses the older WAPA easement road. Operations will move along the north permit boundary and