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stormwater run -off from washing the seed and mulch or hydromulch off of the slope prior to vegetation <br />becoming established. Erosion control measures are shown on Figure 10 — Final SWMP. <br />At the completion of mining operations, the improvements discussed in this work plan will be left in <br />place. Maintenance will be performed on the culvert to repair any damage that occurred during mining <br />operations and disturbed areas will be reseeded. The seeded areas will be planted with the seed mix <br />summarized in the approved mine permit (shown below) and steep slopes will be protected with erosion <br />control blankets to prevent erosion while the seed is establishing. <br />Seed Mix (pending approval from USACE /EPA): <br />• 35% Slender Wheatgrass (7 lbs/ac) <br />• 35% Mountain Brome (7 lbs/ac) <br />• 10% Blue Bunch Wheat Grass (2 lbs/ac) <br />• 10% Canadian Wild Rye (2 lbs/ac) <br />• 10% Lewis Flax (2 lbs/ac) <br />Chief Portal Work Plan Page 5 <br />P \Wmcduc \dwg \Eng \Final Drawings \DRMS TRs \b - Chief Portal TR \Chief Portal Work Plan- Revl.doc <br />