2017-03-27_REVISION - M1988018 - Laserfiche WebLink

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4) Mine slopes will typically be excavated to a vertical wall. Excess material will then be placed at the toe of the slopes until the slope is graded to a 3:1 or greater. High walls will be knocked down by balancing cut/fill to achieve a 3:1 slope. Slopes shall be compatible with surrounding topography and suitable for rangeland livestock grazing. 5) Grading should be done when the site is dry to minimize erosion. 6) Seeding-The seed mix for the area is based on the reference plant communities for area soil types and typical species seen in the area. Reclamation seeding will be accomplished with grass seed drill when possible. When drilling is not possible, seed will be broadcast planted at 1-%times the recommended drill seed rate. a) If possible seed drilling will take place in late October to ensure early germination the following spring. Alternatively seed drilling will be accomplished in the early spring to take advantage of spring moisture and rising temperatures. SEED MIX RECOMMENDATION Common Name,N=Native %of Pound Total (Seed Rate=40 seeds per seed (PLS)per Pounds square foot) Genus,species mix acre PLS Grasses,Forbs (PLS=Pure Live Seed) Grama,Sideoats NJ Bouteloua curtipendula 20 1.82 41.86 Sand dro seed N Sporobolus cryptandrus 10 0.05 1.15 Bluestem,Little N Schizachyrium scoparium 20 1.34 30.82 wheat Gass,western N Pascopyrum smithii 20 3.20 73.60 Gal leta Grass(ca o sis) N Pleara his"amesii 30 0.37 8.51 Needle and Thread N Hesperostipa somata 10 1.09 25.07 Alkali Sacaton INI Sporobolus airoides 10 0.15 3.45 Seed rate=40 seeds/sf 1 100% Shrubs(add shrub seed to grass/forb seed mix) Fourwing Saltbush IN JAtriplex canescens 1.00 23.00 Winterfat IN lKrascheninnikovia Janata 0.02 0.46 Seed Rate Pounds PLS per acre), 9.04 Total lbs PLS 207.92 SEED PLANTING NOTES Drill Type Grass Drill Drill Depth in 1/4 to 1/2 Drill Spacing in 6 to 8 Rip seed bed in compacted soil areas. Seedbed should be firm and not flu No fertilizer is required to establish the reclamation vegetation Mulch =Cereral Grain Straw 4,000 pound per acre, spread and crimp b) Ripping, disking or other aeration methods will be used in compacted areas to aerate and condition the soils to a depth of 6 inches to prepare the seed bed. c) All traffic will be diverted away from seed areas. 7) FERTILIZER— No nutrient management is required for this site. 8) MULCH—Mulch cover will consist of a cereal grain straw spread at 4,000 pounds per acre and crimped. 9) NOXIOUS WEED CONTROL—Weeds will be initially controlled by tilling and mowing as needed.