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This was an aerial inspection flown by Harry )3anney of the Division on 10/23/97. Eleven low <br />angle aerial obliques photos covering the refuse disposal area, "E" Portal Area, and "D" Portal <br />Area were viewed by Dan Mathews of DMG on 11 /4/97. <br />At the E Portal azea, photos were not sufficiently detailed for fine scale evaluation, but <br />containment berm appeared to be intact along the length of the bench, with no apparent spillage <br />of trash, materials or supplies over the berm. D Portal pond was full of clear water, but it could <br />not be discerned whether discharge was occurring. Small temporary piles of rock waste material <br />were evident on the lower bench behind the shop building (rock from B Portal rock slope <br />development), and on the wash plant bench (reject rock). Both piles will need to be trucked to <br />the refuse disposal area. <br />Refuse area sediment ponds all contained water to within a few feet of the primary spillway <br />elevation. A boom truck was in use at Pond RP-2/3, evidently associated with incorporation of <br />flocculant and agitation of water to facilitate mixing and settling to allow for discharge. Detailed <br />drainage maintenance evaluation was not possible, but it was apparent that perimeter ditches <br />were in place, with no deposition of coaly material outside of the sediment control system. None <br />of the ponds were discharging. Refuse grading operations were in process at RP-2/3 (three __..._ ~.. <br />scrapers, 1 dozer), and RP-4 (three dozers). A backhoe was situated along the lower segment of_; - <br />the RP-4 East Collection ditch, apparently repairing the eroded ditch segment in that location:- ~ <br />Prominent deltas of coaly sediment are evident at the inlets to Pond 2/3 and Pond 4, and <br />sediment excavation will be necessary as soon as the ponds can be safely dewatered. <br />:aa, .b <br />