2014-12-15_PERMIT FILE - M2014043 ‎(2)‎

• Permit No: M2014043
• IBM Index Class Name: Permit File
• Doc Date: 12/15/2014
• Doc Name: Preliminary Adequacy Review Response #2.
• From: Environment, Inc.
• To: DRMS
• Email Name: TOD
• Media Type: D
• Archive: No

RECLAMATION PLAN EXHIBIT E(cont)
import material to backfill the excavated area. Exhibit E-2
shows how the area would look if Option 1 is used.
In the MINING PLAN we explained how mining would take place on
37 . 25 acres ± within the permit boundary. During the reclamation
phase the entire excavated area will be backfilled using material
as defined in Colorado Department of Health Regulations as "Inert
material" , i .e. old concrete, asphalt, dirt, sand and gravel,
masonry products and rubble from construction sites . As the
material arrives the driver will be directed to an area where
fill is being placed. The material will then be pushed into the
hole using either a front-end loader or bulldozer. Because there
will be a need for finer fill and topsoil to complete the cap
over the course materials, when that material is delivered some
will be segregated and saved for this purpose.
Initially, backfilling in Phase 1 of the Reclamation Plan will be
done using on site material, mostly wash fines created during
material processing and some on site rubble may also be placed in
the excavated area. Phase 1 will be backfilled to a level close
to its existing surface elevation and graded so it will slope
gently to the west to restore the natural drainage across the
site . Drainage for the existing water features that will remain
will be routed around the fill area to preserve drainage. In
addition to growth medium salvaged from the mine area, the finer
material having been salvaged from imported material will be
spread over the fill and it will be graded and seeded with the
approved mix.
Phase 2 will be filled with imported inert fill, as described
above. Filling will begin on the east side and progress to the
west as shown on the Mining Plan Map creating a gently sloping
area that is at the same elevation as Monaco Street on the east
side. As filling progresses across the site we will salvage and
stockpile finer material to use as a final cover. It is expected
that this cover will be at least 10 feet deep over the courser
fill of which 8-12 inches of the salvage growth medium will be
placed on the area for use as a seed bed.
Phase 2 will slope from southeast to northwest so that stormwater
can be directed to the existing lake, that will remain when
mining ends . The setbacks along the property line will leave a
15(Revised 12/15/2014)