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hazardous materials such as fuels, truck scale, scalehouse, maintenance shop, and office, and poured or precast <br /> concrete or wooden footings for equipment.If used,these generally will be located in the plant area,which will including <br /> parking for private vehicles of miners and visitors,and haul trucks. <br /> Portions of the permit may be fenced off by temporary fencing, such as three- or four-strand barbed wire or stock <br /> panels to allow grazing of areas not yet in process of mining. Areas undergoing reclamation will be marked off with <br /> temporary fencing (wire or mesh, metal or plastic)to protect soil and seeding areas from disturbance by traffic, other <br /> operations, or livestock. <br /> STOCKPILE CONSTRUCTION: <br /> Soil will be stockpiled immediately after removal (unless moved directly to an area being reclaimed). <br /> Stockpiles will have a maximum slope of 1H:1V and stabilized against erosion as necessary as they are completed. <br /> Stockpiles to be in place for less than 12 months will NOT be vegetated(seeded with/without mulched), although other <br /> erosion control measures may be employed. If stockpiles remain significantly longer than this period, seeding would <br /> be done in the fall,as recommended by NRCS. <br /> The initial stockpile area will be located downslope to the northeast of the existing 6.1-acre affected area, <br /> where soil and overburden was stockpiled in pre-mining operations. The stockpile area will expand as necessary as <br /> the plant area is expanded and is included in the 13.2-acre footprint of the plant area. This is estimated to be about <br /> 900 feet long, up to 50 feet wide, and 25 feet high, able to contain 21,000 CY of soil and overburden,which is greater <br /> than the maximum area expected to be stripped for mining and plant site.Stockpiles will be set back from any highwall <br /> a minimum of 20 feet or the height of the highwall, whichever is greater. In case of problems with vegetating (due to <br /> drought, severe winter conditions, or other issues), soil will be protected by application of erosion control agents as <br /> necessary to prevent erosion and loss. These stockpiles and associated swales and other erosion and stormwater <br /> controls are also part of surface water management for the plant and nearby areas. <br /> No other stockpile areas are planned since material stripped from later mining areas will be placed directly on <br /> older mined areas as part of reclamation (backfill and grading, and soil placement. However, if there is a need for <br /> temporary or long-term storage of additional soil and overburden beyond that provided by the plant area, stockpiles <br /> will be extended along the lower side of the area being excavated,first to the south and then north,together with swales <br /> and berms for water control.The total footprint of soil and overburden stockpiles is not expected to exceed 7-8 acres. <br /> As much as possible, do little or no stockpiling of raw materials.When feasible,excavate pitrun material only <br /> while a processing plant is on-site, and do stripping immediately before such a deployment. Generally move freshly- <br /> excavated material directly to the plant hoppers and load trucks directly from outfeed conveyor stockpiles to haul off- <br /> site. <br /> Use portable plants on the site for limited periods of time(the processing season).As demand for material is <br /> expected most of the year(hauling season), store processed material in stockpiles (ready for loading/haul off-site). <br /> Locate such stockpiles on the Plant Area, more than 1,300 feet (1/4 mile) from currently existing residences, and <br /> estimated to hold no more than 80,000 tons at any one time.Temporary operation of ready-mix or asphalt plants on- <br /> site (if done with landowner approval) may require stockpiles of aggregate. Produce aggregates immediately before <br /> and when plants are present and operating.Do not place material stockpiles directly on un-stripped/undisturbed or fully <br /> reclaimed land, <br /> In general, place overburden and soil stockpiles where the material will be easily available for reclamation <br /> with minimum movement and re-handling. If needed,place some temporary stockpiles for soil and excess material,at <br /> various convenient locations along roads, on the floor of the pit, in the plant area, or in stripped areas and move as <br /> soon as possible. Avoid using silt-fence at the toe of stockpiles as much as possible,and control sediment with shallow <br /> swales at the toe. (These will retain runoff to allow infiltration and prevent surface runoff and mud.) <br /> SURFACE WATER MANAGEMENT: <br /> See Exhibit G. <br /> C&J Gravel Products, Inc. Page 19 of 93 20 OCT 2021 <br /> Application for Permit: Oakbrush Hill Gravel M-2021- C&J-DPR-V5-001 <br />