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PERMFILE68259
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PERMFILE68259
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Entry Properties
Last modified
8/24/2016 11:13:56 PM
Creation date
11/20/2007 10:16:20 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1994027
IBM Index Class Name
Permit File
Doc Date
4/13/1994
Doc Name
COOLEY GRAVEL CO LONGMONT OPERATION APPLICATION FOR A REGULAR 112 MLR PERMIT
Media Type
D
Archive
No
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<br />VI. EXHIBIT E -RECLAMATION PLAN <br />The primary focus of reclamation of the site following mining is the creation of a stable, vegetated, <br />irregular shoreline azound the proposed open lake depicted in Exhibit F -Reclamation Plan Map <br />(Figure F-!j. Reclamation will occur concurrently with mining and is expected to be completed by <br />the yeaz 2012. The final reclamation land use, in this scenazio, will be an open lake water resource <br />and wildlife habitat azea. An optional, alternative water resource reclamation land use may be <br />developed instead of the open lake scenazio presently proposed for permitting. This would consist of <br />the iden[ical reclamation plan for the open lakes, but with the addition of a slurry cutoff wall <br />surrounding the site. This plan would be implemented if the economics associated with a buyer of the <br />resulting sealed water storage reservoir, slurry wall construction costs, and water rights and <br />consumptive use issues were favorable. <br />Reclamation, as for mining, will proceed from the southeast corner of the site from the plant azeas <br />towazds the west and north. Final reclamation grading will be in the Phase Four mining azea where <br />the initial plant azeas will be located and will include construction of a dike to create two reservoirs if <br />a sealed water storage facility is built. Grading will be followed by planting of trees, shrubs and <br />grasses on newly established shoreline and side slopes. <br />Grading will be performed to create a natural looking open water lake within the existing floodplain <br />topography. The temporary 1:1 (H: V) excavation side slopes will be reclaimed with overburden and <br />waste soil materials to create stable 3:1 shoreline slopes. The 3:1 shoreline slopes will extend to ten <br />feet below the proposed maximum pool elevation, below which they will be steepened to 2:1 slopes. <br />No excavation "highwalls" will be lefr at the site. <br />Backfilling will occur as each mining yeaz is completed. Grading will be uniform and continuous and <br />performed in such a manner to provide stable slopes, minimize erosion and limit siltation. The time <br />table for each mining phase, and hence for each reclamation phase, is included above in Exhibit D. <br />No acid or other toxic forming materials are known to exist in the topsoil, overburden or sand and <br />gravel to be excavated at the site. Refuse generated on the affected land will be contained and hauled <br />• <br />13 <br />/'l~/'l <br />
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