PERMFILE49014

• Permit No: M1999058
• IBM Index Class Name: Permit File
• Doc Date: 6/22/1999
• From: SIERRA MINERALS CORP
• To: DMG
• Media Type: D
• Archive: No

the waste pile area just above the sediment control structure. Access to this area will be off the
south end of the existing easterly waste pile road, then down the existing jeep trail. The waste
pile will be built up from this area, according to the contours shown on the Post Reclamation
Contours map. The average final slope will be no greater than 2:1.
(c) Reve¢etatioo: Because the original vegetation in the western portions of the affected
azea is sparse to nonexistent, and because the Marble Historical Society has requested that the
mazble waste piles remain exposed, only limited revegetation is anticipated by Sierra.
Revegetation will involve placement of topsoil on existing access roads and facilities areas. The
cost estimate below assumes transport of topsoil from the Carbondale area. However, if Sierra is
able to recover topsoil from the areas to be covered by the waste piles, such as south of the
existing waste piles, this material will be sufficient to satisfy the reclamation requirement. The
total area to be revegetated is estimated at approximately 14,000 square feet or about 1 /3 acre.
No major additions to the existing roads are planned by Sierra other than to extend access to
waste piles. The total area to be revegetated is not anticipated to exceed 1/3 acre over any part of
the operating life of the quarry.
(i) The depth of soil is planned to be six inches, comparable with the sparse soils in
the area. Samples of soils in the area will be analyzed to establish quality.
(ii) The access roads and facilities area will be active throughout the life of
operations, so topsoil placement and revegetation will occur only after mining is complete. Seed
beds for the grass and forb mix will be prepared by ripping, discing, raking or scarifying of any
compacted areas to approximately b inches, followed by piacement of topsoil, the soil left rough
Fertilization will be based on the identified needs of tbe soils placed for revegetation. Since the
source of the imported soils is not specifically identified, fertilization requirements cannot be
established at this time. Only min;mal fertilization is planned however during establishment of
the grass mix in order to m;n;mi~e any effects on water quality in the area, and then only where
soil tests indicate nutrient deficiencies for the plant species to be established. Ongoing
fertilization is not wnsidered appropriate for creatatg self-sustaining vegetative growth. No
more than one or two fertilizer applications would, in any case, be expected to be necessary.
(iu) The U.S. Department of Agricultwe Soil Conservation Service provided the
following recommendations (except Cicer Milkvetch has been substituted for Yellow Sweet
Clover on the recommendation of CDMG) regarding seed type and quantities;
(1) (2) (3) (4) (5) (6)
PLS Seed Total PLS
Required Percent of Rate Per Species Bulk
PLS Rates Species in Species/Acre Planned Planned Seed
cr Mixture (1) z (2) cr (3) x (4) Estimate
Pubescent Wheatgrass 14 30 4.2 1 4.2 5 Ib.
Western Wheatgrass 16 30 4.8 1 4.8 5.5 Ib.
Smooth Brome 13 30 3.9 1 3.9 4.5 Ib.
Cicer Milkvetch 7 10 0.7 1 0.7 1 Ib.
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