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2003-04-04_REVISION - M2001090
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2003-04-04_REVISION - M2001090
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Last modified
6/15/2021 2:13:58 PM
Creation date
11/21/2007 4:57:59 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2001090
IBM Index Class Name
Revision
Doc Date
4/4/2003
Doc Name
Amendment Application
From
Lafarge West Inc.
To
DMG
Type & Sequence
AM1
Media Type
D
Archive
No
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EXHIBIT E <br />Reclamation Plan <br />Groundwater lakes with wetland mitigation areas will be the final reclaimed use for the River <br />Valley Resource site. In this area of Routt County, agriculture is a predominant land use along <br />the Yampa River, and therefore, the proposed post mining use is compatible with surrounding <br />land uses. The groundwater lakes will encompass the majority of the site. The remaining area <br />within the proposed permit boundary will consist of lake shoreline, backfilled/wetland mitigation <br />areas, and reclaimed or otherwise undisturbed land. The approximate acreage of each of these <br />areas is: <br />Final Land Use Area (acres) <br />Groundwater Lakes 65.59 <br />Shoreline 8 <br />Backfilled/Wetland Replacement Areas 17.41 <br />Reclaimed or Undisturbed Land 37.26 <br />TOTAL 128.26 <br />R~lacement Wetlands <br />As illustrated in Exhibit F, Reclamation Plan Map, portions of the Phases in the westem portion <br />of the site will be backfilled to create replacement wetlands. Similarly, portions of the Phases on <br />the eastern side of the site will also be backfilled to create wetland areas (Reclamation Plan Map, <br />Exhibit F). It is anticipated that the northern and western most portions of Phases 1 and 3, <br />respectively will be used as sediment basins for process fines generated from the aggregate <br />washing plant, The sediment basins are sized to contain the anticipated volume of fines <br />generated from the aggregate washing activity. The basins will be filled with fines to within 1 to <br />3 feet of the existing groundwater elevation. As the basin forms deltas and reaches capacity, <br />emergent wetland vegetation will begin to colonize the area. Depending on groundwater <br />elevations, the final surface elevation of the backfilled areas may be below the existing and <br />surrounding ground elevation. Any slopes remaining will be reclaimed to a minimum 3H:1V <br />grade. <br />Reclamation Measures/Materials Hand]inQ <br />The mining will create the rough topography for the lakeshore and the replacement wetlands (see <br />Reclamation Plan Map, Exhibit F). The backfilling will be done to provide stabilized shorelines <br />around the reservoirs and to minimize erosion. The backfill material will consist of native <br />bedrock claystone, overburden, and topsoil. Throughout the life of the mine, inert material from <br />on-site and off-site sources will be used to backfill shorelines. There will not be any known toxic <br />or hazardous materials in the backfill material. Additionally, acid forming or toxic materials will <br />not be encountered during mining. <br />The mining will not leave highwalls on the property. There will be no auger holes, adits, or <br />shafts left on the property. <br />River VnRey Resource <br />DMG /ll Permi(Amendrnenl <br />Pnge 7 <br />
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