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2014-10-07_PERMIT FILE - C1981018A (2)
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2014-10-07_PERMIT FILE - C1981018A (2)
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Last modified
8/24/2016 5:48:37 PM
Creation date
10/15/2014 8:31:19 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981018A
IBM Index Class Name
Permit File
Doc Date
10/7/2014
Section_Exhibit Name
Section V. Mine Surface Facilities Reclamation Plan
Media Type
D
Archive
Yes
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<br />V.1.4 Site Preparation Techniques and Materials General guidelines are followed in the <br />preparation of site specific planting plans to be used for each area requiring revegetation. An <br />example of the planting plan used is shown on Table V-g. The guidelines employed in the <br />preparation of each planting plan are given below. <br />V.1.4.a Seed Selection. Seed mixtures are developed based upon general site characteristics, <br />reclamation objectives, commercial availability of the desired plant materials, and past experience on <br />site or at other similar sites. One of the key aspects of developing a successful seed mix is the <br />selection of a highly diverse array of potentially adapted species. Many factors determine which <br />species successfully establish for a given site at a certain time. These factors include: <br />• Soil texture. <br />• Soil fertility. <br />• Depth to a restricting layer in the soil profile. <br />• Chemical restrictions such as pH and salinity. <br />• retention. <br />• Symbiotic rhizobial relationships. <br />• The influence of slope and aspect on soil temperature and evapotranspiration. <br />• Competition from pioneer species (weeds). <br />• Seasonality of precipitation. <br />Duration of ideal germination and seedling establishment conditions. <br />• Interspecies competition from within the seed mix. <br />• Seed dispersal from other species from adjacent lands. <br />• Agronomic practices such as seed bed preparation. <br />• Etc. <br />Some of these factors can be measured ahead of time for the broad scope of a revegetation project <br />but unique inclusions and microsites frequently are overlooked when using a site specific approach. <br />Most factors we can only make an educated guess at. The situation becomes even more complex <br />when factors start to interact and compound. The complexity of the controlling factors dictates the <br />need for diverse seed mixes to achieve the success criteria. The greater the influence the adjacent <br />vegetation has on a given site decreases the need for additional species in a seed mix. Voids in <br />filling minor niches will allow native species from adjacent lands to establish. Tables V-10 and V-11 <br />provide a list of revegetation species and recommended seed mixes for large permanent sites, <br />small and linear sites, and interim and drill sites. These mixes were formulated to be adapted to <br />the wide range of conditions that occur at the Deserado Mine. The locations to which these mixes <br />apply are further explained on Table V-15. Interim sites refer to areas revegetated to stabilize the <br />area but where future disturbances and subsequent permanent revegetation are planned. <br />• <br />Mid-Term Review 2002 (8/2002) V-35 <br />
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