2006-11-22_REVISION - M2005012 - Laserfiche WebLink

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EXHIBIT D- Mining Plan (a) Description of [he method(s) of mining to be employed in each stage of the operation as related m any surface disturbance on affected lands; A total of 33.74 acres of the 39.74 acres within the proposed permit area will be disturbed by mining activities at the site. Approximately 6 acres of the 39.74 acres within the proposed permit area consists of wetlands which will not be disturbed and will require no reclamation. This area will be protected and separated by silt fencing and a 50 foot buffer zone above the entire wedand/creek area. The site will be divided into two Mine Phase Areas: • Phase 1 Area of 17.94 acres (west half) • Phase 2 Area of 16 acres. (east half) Activities will commence at [he site in spring/summer of 2005 and continue on an as needed basis until all gravel material has been removed from [he site. The access haul road will be constructed into [he initial area of operations located in the Phase I area in the northwest/wes[ side of [he site. From the initial area of operations, mining will proceed generally to the south and east. The initial area of site operations located in the northwest comer of the Phase I areas wilt be approximately 7-8 acres. This area is along the general ridgeline of [he north south ridge and is considerably flatter than the rest of the site. Once mining activities in [his area have been completed (using max 20 foot lift by 100 foot wide benches) this area will be reclaimed as mining activities proceed into the southwest corner below the access road then towards the east above the interior haul road towards the Phase 2 area boundary as shown on the Mining Plan Map. Maximum 20 foot lifts will be developed along the current site topography which will range from 60 to 100 feet wide and highwalls no more than 200 feet long a[ anytime. As mining is completed along each Gft/bench area and moves "downslope" the mined areaPoench will be sloped and graded, have topsoil placed and be seeded depending on the current planting season and recommended guidelines. Topsoil stripped from [he next bench area will be stockpiled along [he generally eastern downslope edges of the previously mined, regaded, sloped reclaimed bench area. When equipment has been mobilized to the site for mining and processing operations (depending on market conditions or project needs), reclamation activities will be part of the mobilization so that site reclamation will follow the mining activity fairly closely. Benches in each Phase Area will come off the interior haul road northeast to southwest in [he Phase I area and generally north to south in the Phase 2 area. Maximum 20 foot lifts with no more than 200 feet of highwall developed at any one time will be excavated along/across [he site topography on bench widths of 60 to 100 feet in width. If benches are developed along and across the current site topography in this manner a total of from 6 to 8 total benches will be required in each Phase Area depending on the width of the bench and working room that may be required. Mining operations at the site will begin at the top of the western ridge conducting facial extraction of the gravel deposits off the slope in approximately 20 foot lifts following the existing site topography downslope. Topsoil stripped from the initial area of operations will be stockpiled in the west and north ~0 foot perimeter buffer zones Trees and brash will be removed with a dozer and piled a[ various locations on [he site perimeter out of mining and traffic areas as wildlife habitat. As each lift is completed, the IiRJbench slopes will be graded to match [he surrounding topography leaving a gradual slope from west to east along the east flank of the large north/south trending ridge. Any available topsoil will be salvaged and stockpiled on the west and north sides of each new IiR to be spread on the remaining slopes after gravel extraction and final grading.