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2014-03-12_PERMIT FILE - M2013080
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2014-03-12_PERMIT FILE - M2013080
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Last modified
8/24/2016 5:40:55 PM
Creation date
3/13/2014 8:15:29 AM
Metadata
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Template:
DRMS Permit Index
Permit No
M2013080
IBM Index Class Name
PERMIT FILE
Doc Date
3/12/2014
Doc Name
Adequacy review response
From
Pine Bluffs Gravel & Excavating
To
DRMS
Email Name
MAC
Media Type
D
Archive
No
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EXHIBIT D — Mining Plan <br />A -E: The subject area will be mined using the following procedure. The first operation will be to mow <br />the grass and vegetation growing on subject. We will use a 100 HP agricultural tractor and 10 to 15 foot <br />rotary mower to cut and pulverize the vegetation growing on area to be mined. The next step will be to <br />strip the topsoil estimated at 6 inches to 1 foot depth using scrapers. The stripped topsoil will be <br />stockpiled adjacent to the mined area, generally to the south, so it can be used in the reclamation <br />process. Any topsoil piles expected to remain for a pe =riod of greater than 6 months will 'be seeded to a <br />land owner approved hummer annual plant such as ^proso millet to vegetate file led soil' ?roso millet is <br />typically broadcast at 5 to 10 pounds per acre �111e may have on site approved, contained; fuel storage <br />for diesel typically 1,000 gallons or -less. We will locate the storage on the south side of the mine area. <br />After the mined area is stripped and the mining equipment has been set up, an excavator with a 3 to 6 <br />CUYD bucket will remove the sand and gravel and place it on conveyors that will transport the sand and <br />gravel to the screen plant.- A berm along Big Sandy Creek will be constructed while- thetopsoill-and <br />overburden is removed he overburden removed , f rom the mined area will be stockpiled in .the Pipland <br />area to the south and saved for later use as backfill in the mined area during the reclamation �rocess. <br />The screen plant will size the material and stockpile for use: The screerri plant and conveyors are all <br />entirely portable equipment. It is anticipated that the mined area will not exceed more than 10 acres at <br />any one time. Any water encountered in the mining process will be allowed to drain back to the mined <br />area' We have established groundwater levels to be 8 to 12 feet depending on the elevation and time of <br />year aftervisiting with the local well driller in iimonl Eastwood Drilling. a are committed to <br />maintaining the pit floor 2 feet above static groundwater. It is anticipated that up to 0.5 acres will be <br />processed each workday' Th0 existing trail road that accesses the property will be able to be used <br />without improvement. As the mining process moves east, starting from the west side of subject, areas <br />will be reclaimed after the sand and gravel deposits have been removed. the e�cposed rriine:face prior <br />to reclamation will be maintained t: a4:1 slope. We plan to maintain a 50foot offset t ri the hire <br />perime "ter fo facilitate this aline slope. (See Reclamation Plan). <br />The timing for the process is hard to estimate at this time. The primary purpose for the mine is supply of <br />road surfacing aggregate and concrete sand for a proposed wind turbine farm north of the area. The <br />project is scheduled to commence construction in later April, 2012. If that schedule is reality, mining <br />operation would commence in March 2012 and continue for about 6 months. However if the wind <br />project is delayed or they select a different aggregate supplier, the mining operation will not commence <br />until an alternate construction project is identified. <br />F: The mined material is predicted to range from sand similar to beach sand to nominal gravel up to 1 <br />inch in size. Our interviews with the landowner and previous mine operator made us believe the deposit <br />to be as deep as 11 feet from grade and generally be increasingly coarse as toward the bottom of <br />deposit. The overburden is quite sandy, from 6 to 12 inches deep, and sometimes hard to distinguish <br />from the cleaner sand it transitions to. <br />
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