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<br />MINE PLAN: <br /> <br />Mining Timeline: It is expected by the Operator that mining will commence upon receipt of approval by <br />the Colorado Division of Mining and Geology and the City of Ouray. For the purposes of this application, <br />the estimated date mining commencement will be June IS'", 2001. From estimates of material available <br />under this mine plan, the operation will end on September 30`", 2006. <br />Topsoil Salvage and Replacement: Since the soil nature in the proposed operational area precludes the <br />salvage of topsoil, it is expected by the operator that no topsoil salvage will be conducted during the life of <br />the operation. The operator will, to the best of his ability, salvage suitable plant growth medium during the <br />operation from fines produced from screening operations. These fines should act as a suitable topsoil <br />substitute. <br />Overburden and Waste Rock: As stated in the above paragraph some reject fines may be produced to <br />create a suitable topsoil substitute, however all rock or gravel moved during the operation other than that <br />set aside for reclamation will be sold as product. Since the potential gravel deposit produced by the debris <br />flows from Bridalveil Creek extend from the surface downward at least 100 feet it is not expected that a <br />typical overburden scenazio will be encountered. Additionally since all material produced by the operation <br />has a market value, it is not expected that any waste stockpiles will be developed during the life of the <br />operation. <br />Deposit Thickness: As stated previously the rock and gravel deposit has been estimated to be at least 100 <br />feet thick from the surface. The mining thickness however is much less as described later in this section. <br />Description of Operation: The proposed operation by Bridalveil construction is designed to dry screen <br />material from previous debris flows and create gravel products for sale. Material testing by the operator <br />has shown the main material of interest to be a Type 6 road base as specified by the Colorado Department <br />of Transportation (COOT). Other materials to be mined will be a 2-foot minimum riprap and cobble. The <br />screening process will be similar to that conducted by the City of Ouray at Skyrocket creek which is <br />approximately one-quarter mile south of the proposed operation just off U.S. Highway 550. <br />The method of mining in general will follow these general outlines. Material will be removed by a small <br />trackhce or backhce. Once removed the material will be screened at I inch or'/, inch to produce two <br />products: a Type 6 road base and a cobble. The portable screen will be set in close proximity to [he mining <br />face in order to screen the material as it is removed. Two stockpiles will be developed for each product, <br />however it is expected that these will be quite small (less than 100 tons) as material will be mined and <br />screened as needed. A dozer may be used on some occasions [o push material to the trackhce. Material <br />will be loaded into 10-ton end-dump haul trucks with a loader or backhce for transport to customers. <br />Pit Development: During the first year of operation, the opcration will clean out the Bridalveil <br />Creek drainage where it crosses the proposed operation. This cleaning will create asemi-permanent <br />channel for flows to pass across the property. Atypical cross-section for this channel is attached as <br />Drawing MP-I. This channel is designed to pass a typical small intensity storm event (10-year, 24-hour) <br />into a settling basin that the operator will create at the west edge of the affected area and near the edge of <br />the 50-foot buffer zone for the highway right-of--way. The basin has been requested by local COOT <br />personnel to create a holding cell for debris that typically Flow onto Highway 550 during storm events. The <br />channel as designed should contain most storm events, however continued maintenance will be required for <br />it to continue to function as designed. Should a large storm even[ occur (typically greater than 25 year) it <br />would probably contain significant amount of debris and the cleaned channel would rapidly fill with rock <br />and [he channel could then move elsewhere as is [he case presently. <br />The cleaning of the channel and creation of the settling basin will benefit not only the operation but also the <br />COOT and surrounding landowners. The channel in the upper reaches is actually higher in elevation then <br />the surrounding topography with debris buildup from previous storms acting as the channel embankment. <br />