Laserfiche WebLink
EXHIBIT C - Minin¢ Plan <br />(a) Mining dates. <br />Mining will commence upon completion of the entire permitting process, which may be on or <br />before September I5, 2007. Mining is anticipated to last over 20 years with an initial possible <br />immediate production of 20,000 [0 30,000 ton during the first yeaz. Production at [he site will <br />be mainly for rip-rap and larger boulders for river stabilization projects. The site is remote <br />with a limited commercial market and rock and boulder production for local projects may take <br />place as materials are needed and then selectively scaled from the outcrop. <br />Mining will begin along the reclaimed margins of the previous DRM&S Permit k M-1994- <br />022. The flatter elevated area at the top ofthe access ramp will be used as before for an <br />operations/temporary stockpiling area. Mining will start at and follow the limits of the <br />previously disturbed areas and will move along the general existing slope and (rock) high- <br />wall (very slowly) extending the disturbed area to the west then north. The fractured and <br />weathered rock (possible upper 2 to 4 feet to solid un-weathered bedrock) will be removed off <br />the slopes or scaled off the more sheer faces as/when necessary. Due to the nature of the <br />outcrop, the sheer faces and limited annual production from the site the total disturbed area a[ <br />the end of 20 years would be less than 3 acres. (Note: the 20 yr. limit line on Exhibit E Map) <br />Some limited asphalt production and crushing and screening operations are planned at the site <br />using temporary mobile type process equipments. Process equipment operation at the site <br />would be temporary. The operations area is restricted so equipment may be mobilized as <br />convacted materials or stockpiles are needed. Estimated mining activities at the site would <br />average less than 30 days per year. <br />(b) Topsoil -soil suitable as a plant gowth medium. <br />All ofthe soil within the proposed permit azea, as mapped and described by the U.S.D.A. Soil <br />Conservation Service in this area of Moffat County, consists of soils belonging [o the <br />Ustorthents, Fridgid - Borolls Complex, 25 - 75 % slopes. These soils at the site are very <br />well drained and have very little water holding capacity. Soil depth is shallow and thin and <br />grades to un-weathered bedrock. Permeability is slow and runoff is high. Due to the steep <br />slopes and limited soils and vegetation the area is unsuitable for livestock grazing although <br />wildlife and livestock do occasionally use some of the side and upper slope areas. There is <br />very little topsoil/surface soil at the site. The proposed mine area is predominately weathered <br />sandstone outcrop and bedrock and has been assigned a "none" rating as an ecological site by <br />the NRCS. Any and all topsoil and/or suitable surface material including some possible <br />crusher fines will be reserved for site reclamation. The folded bedded sandstone outcrop <br />material at the site forms very high angle slopes and cliffs of bare rock with no topsoil. (see <br />photos) <br />(c) Thickness of overburden or quantity of waste rock. <br />Overburden is minimal and is sufficient quality (fractured and weathered sandstone mixed <br />rock) to be used in base course and fill material. Material below the salvageable surface <br />/topsoil horizon will be mined and hauled unless used onsite for access ramps or storm-water <br />berms. There will be no stockpiles of waste rock or overburden. Boulders and large rip-rap <br />may be mined and/or scaled from steeper areas as needed. Some scaling and rock fall <br />mitigation will be done as necessary on the higher angle slopes and cliffs above the county <br />road. Rock fall and slide rock will be collected from the slope toe and roadside to assist in <br />county maintenance. <br />(d) Thickness of deposit [o be mined. <br />