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05/11/1995 14:45 719 • ABEL ENGINEERING • PaGE le Other than the "Overburden Stockpile" all other individual stockpiles will be kept at a maximum site of 5.0011 tons each until use. This will result in piles with approximate dimensions of base of fifty(SU) feet, heighe of forty (4U) feet and a length of eighty (gU) fat. I~v As mining progresses: an area that will no longer be required for use will be Grin graded, the 1v a ~ topsoil restored.and that area reseeded according to the `Reclamation Plan'. The mining will ~~ ~~~ proceed " a clockwise directio ith the redatnation of an area already mined occurring behind it. The Topsoil remov rom the ne~f phase will be used on the area already mined. The previous area will be reclaimed as quickly as is reasonably practical as mining progresses. GENERAL ARRANGEMENTS: Layout of the mining operation is flexible and the locations of stockpiles is expected to turns as the mining progresses per operations eonvertitutce. ~Tlte topsoil will be piled near the East border labeled on the "Beginning Grading Plan " to "Overburdrn (Topsoil) Stockpile' The sm~Il amounts of Clay material encountered at the site will be used tnaiNy as binder for local gravel roads. Any Clay Cottttd will be lempororily stored in the oleo titled "Clay Stockpile' on the map. Note again this stockpiles will not exceed 5.1100 tons. The larger Boulders and Cobbles will be stored in the area shown on the "Mining Plan Map" tilled 'Ovelsiu Stockpile". The Boulders and Cobbles will be used for erosion control. Rip•Rap, homers. landscaping or other such uses by the County of Custer. Aowsionally thry will may be cntslted and used to chip sell. The Count' estimates a maximum Gmvel usage of 30.00(1 tons per year. The Sand and Gravel will be screened. entshed. coned attd piled in the area labeled "Gravel Stockpile' on an as ntxded basis. Note that the operation of a crusltcr is a rare ottvanx and some dust ie treated during its operation. GRADING: Proper grading and care will be taken on a continuous basis for the prevention of erosion at the site. Shonly after an)' major mittstorm the "PERMIT AREA" will be examinod for any erasion and repairs immediately performed. ' 4~ Temporary diecrsion ditches will be used to redirect ntrface mnoH'around and away from Ail '~( Fi areas in order to prevent the erosion of silt into the pit area. Ste ditch details at the end o! this ~ Exhibit. Water imporrndntettt will not be permitted. Straw bales will be used to filter out,silt at X ` m I lf~ I settling basins and looted at points along the drainoge ditches as reyuired. See details ai,the end t 7 Y of this Exhibit. Settling basinsand ditches will be mainuined on a regular as needed basis. Straw bales, settling basins and other erosion protection items will remain in place until vegetation is established as per the Soil Cortservation Service approval. ENVIRONMENTAL PROTECTION: Refueling of equipment will be performed using portable refueling trucks only. No tanks will be rioted on tile. All handling and spill cleanup regulations will be observed. Liner and debris will be removed on a regular basis. IMPROVEMENTS- A "Landfill Access Road' ntrretttly criris along the Eariern hank nd inside the "PERMIT AREA' boundary• and is being used to access the "Custer County Lan a 'PIT HAUL ROAD` will be a new eversion o[ the "Landfill Aaa:ss Road` and will be used to haul mrterials in and out of the site. This road is shown on the maps extending along the Southeast edge down into [he training area. Driving will occur in the pit a s required and is nor indicated on the maps. The "PIT HAUL ROAD" will be used fo all bases of the minlnQ .~