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2 West Portals - South Overburden Stockpile It appears that very little water will flow from this .2 acre site and that any that is generated will be contained behind a two foot berm. However, it is not clear from the submittal that water will not flow east toward the road. 4. Please ask the operator to verify that the road is upslope from the SAE or, if that is not the case, to add a berm between the SAE and the road. 2 West Portals - Substation and Overburden Stockpile It appears that the very little water will flow from this one acre site and that any that is generated will be contained behind a two foot berm. It is not clear from the submittal that water will not flow across either of the two roads and out of the SAE. 5. Please have the operator verify that flows from the SAE will not flow across either of the two roads. If this not the case, please have the operator consider putting swales across the roads in lieu of a two foot berm (see discussion, above). Neither stockpile is designated as a topsoil stockpile on page 171d of the submittal. 6. Please have the operator label the two stockpiles shown on Exhibit 58 as overburden and show us where he plans to stockpile topsoil. BORROW PIT• As noted in my memo of 10-29-92, there is some concern by both BLM and the Division about the need to disturb a new area as a borrow pit in order to reclaim the portals areas. 7. Please have the operator consider not reclaiming the portals to exact original contour (see concern # , below). ROAD CULVERTS: PORTAL AREA: The operator designed these culverts using a 100 year event. The Division feels that the calculations require using only a ten year event. The culverts are sized adequately for a ten year event. The outlet from the two 24 inch culverts leading from the relocated channel do not need to be armored if, as reported by the operator, the outlet is on bedrock.