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The actual slide bodies are too steep (~1.8H:1V) to safely operate machinery, therefore only the scarps at the crests of the slopes will be reconfigured. SCC has estimated that approximately 33.8 acres (74%) of the 45.4 acres can be safely reconfigured. 2. Selection of Remediation Technique SCC has explored various remediation techniques and methods to promote vegetative growth on the area and has detemvned that incorporation of limestone amendment to the azea will promote adequate revegetation. Agricultural grade limestone, ground to 100 mesh, will be applied at approximately 10 tons/acre and be incorporated into the top 6 inches of the surface. The area will be seeded with the following seedmix specifically selected for aridic conditions. Old Wolf Creek Seedmix Drill Seeding Smooth biome 31bs/ac Orchard grass 21bs/ac Timothy llbs/ac Canada bluegrass 1 lbs/ac White dower 0.5 lbs/ac Western Wheatgrass 1 lbs/ac Alfalfa l lbs ac Totat 9.51bs/ac * Broadcast seeding will be double the drill seeding rate. * 10 lbs of winter wheat will be used as a cover crop fox fall seeding. 3. Construction of a Postmine Channel to Control Discharge from Existing Pond Currently, the discharge from the pond within the bowl area does not report to an NPDES discharge structure, instead flows onto utuiuued lands and ultimately enters Grassy Creek below Pond 003. Based on pH sampling conducted by DRMS personnel, the water is acidic (pH 3.5). In the Phase I Bond Release Proposed Derision and Findings of Compliance document DRMS states... "The impounded water doer patent a problem due to itr acidity. The applicable ruler (at the time of minim require that acid forming and toxic producing material had to be handled to protect the drainage ryttem from pollution. Further, the impoundment doer not meet curmnt tequi~ementr of Rule 4.05.9': We will stress that Rule A channel approximately 1,800 feet long will direct mnoff water from the bowl area into the Pond 002 watershed (see attached map). The grade on this ditch would range from 2% to 12%. It is estimated that the 800 feet of the channel would be a v-shaped vegetated channel, while the other 1,000 Feet of channel would be lined with approved turf reinforcement material (IRIS. The design for this channel (Plrl) is attached. 4. Regrading the North and South Slide Crests North Spoil/Slide Area. On the north side of the pre-law mining area, spo$ was dumped off the edge of the steep slope. This material, over the years, has caused a landslide with a neaz vertical scarp at the crest of the slope. In order to stabilize the scarp azea, the plan is to reconfigure the scarp azea to a 2V:1H slopes (tee attached drawing). In addition, the east side of the slide area would be regraded to blend with the virgin slope. Wolf Creek Pre-Law Area Remediation Plan 2 06/07