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irn -.~_~- ~~~ 1=•: -.~ IL:~_ii I'u i,w ui,w ~~_ ~ IC'_ Ili is _Ilr'c:__Tljl_Ip `NSPECTION'REPORT uedium for [he time being with plane during the upr.omtng summed. ;eaeon to topsoil and plant it. As they put in the bench and' reeotled it, they threw up s temporary berm to physically separate the reeotled area with the veete. In doing aa, they did not direct the drainage from area inside from the berm to the waste or the 70 foot wide bench drainage arse to the mouth of the l00 year diversion on the aoutheaetern end of the waste pile. This Le an oversight on the companye behalf to grade the tail of the berm and hench drainage to the 100 year diversion ~uat below the main topsoil stockpile fnr the area. The second drainage control problem was noted when Hr. Clayton end myself went back out to the new waste pile bench to measure the Flops of the area. I overlooked it earlier in the inspection when the' company official end Nee Aegay were nn the site. While she was working on their mineaite report, Mr. Clayton end i decided to Ro beck out to the active workings on the vaste pile to survey it for grade. Earlier estimates were limited to visual observation so the decision was made to check the elope of the waste bench with an ahney level and clinometer. Ae we entered the waste hench off o£ the haul road, runoff was noted croeain the road from the interior bar ditch of the road onto the waste. FurtheY Invest gatlon revealed that the ditch in that area was rozen and/or filled with sediment causing it to overflow and run acroae the road instead of going on down to a culvert underpass Into the 100 year diversion along the perimeter of the waste pile. I was told by company officials that the interior bar ditch of that haul road is the l0~ year diversion for the drainage above the road. It intercepted drainage from shove as well es road runoff. The portion of the ditch that was plugged appeared as though tt wee not graded properly thus allowl.n¢ runoff to settle' tnetead of being carried through to the culvert and nn to the ln0 year dive re ion. It was hard to verify that because of en ow cover and the north facing elope which reduced melt to a minimum in that area. The Sylvestor Gulch road runoff going into the active waste disposal area was caused by afternoon melt and their failure to grade the road properly. Road maintenance Crews grade the road nn a regular basis 6ecauee iC is access for one of the exhaust fans fnr the mine. Snow is pushed to the aide of the road surface but not into the bar ditch. The intent there i assume is not to fill in the ditch. This however, causes snow accumulation on the road which in turn melts and runs down tracks caused from vehicles entering the area. The her ditch drainage on both sides of the road !e directed into the Inn year diversion around the lower perimeter of the pile. There was some comment about the road Heing graded with a alight incline towards one or Che other dltchee but that vas not apparent during the..inepection. Old plans for the road that have since been revised celled fnr a water bar on the road to prevent some of the flow that wee occurring. It was difficult to fully evaluate the amount of drainage directed loco the pile that was Sn violation 6ecauee of alternating freexe- thew cycles encountered on tl~e mine during the inspection. However, Page 2 U\'~_ F'LW t.