1988-06-20_GENERAL DOCUMENTS - C1981017

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. ' . ' ' . ^ P REPORT AGE 5 in the hopesz that some tighter controls can be established for covering the material . I also am concerned about the placement of the material . It is being placed near the toe which historically is a place of water accumulation . I feel that it would be better to locate- the materia] in another zone of the pile. I have not had time to research the approvals for the pile but would hope that this was considered. One of the drainage control structures, a ten foot culvert , under the bin pad bench was partially blocked with soil , debris and rocks on the upstream end of the tube. It was blocked halfway for about a third of the tube. A �lide- dh undi �turbed area above the bench has pushed out into the drainage goinq through the tube. The to� of the slide is in the drainage. I was concerned about the blockage in the culvert and was prepared to write a ten day notice if M�s Thompson was not willing to issue a notice of violation. Before doing that we checked the storm design for the structure and found that it was put in for a 100 year storm which is more than adequate for the required storm of 20 yr 24 hours. Mr . Jones said that despite the design freeboard, he would clear the blockage. I also made the comment that it might be a good idea to pu] ] out the wood and debris on the slide face in the immediate area of the drainage basin in case a storm came through that went over the current high water mark. No TDN or notice of violation was issued. This area merits attention however , because the stream bed level has been elevated by the toe of the the slide. The culvert will more than likely always contain some load levels. The culvert on the road crossing above this one has been replaced recently because it was buried by the slide. The new one had no flow through it , the stream channel flow is still filtering through the old pipe even though it is under the cobbles in the stream bed. The two mine fan area was- checked for oil spills and debris, no problems noted. The two mine coal bin collapsed last winter ' the steel from the bin was cleared away and hauled to a temporary disposal area until it can he scraped . The mine plan and accompanying permits were reviewed at their loadout in Carbondale' Their mine permit , C-017-81 , expires May 31 , 1988' Their NPDES oermit , CO-0039136, for the loadout expires 12/31/91 . The NPDES permit , CO-000396, for the mines expires 12/15/8B. A renewal for the permit has been submitted as of 3/24/88. Their certificate of public liability insurance is carried by Marsh & Mclennan Inc . of Chicago and expireF 11/11/88. The most recent sediment pond self inspections for the mine and loadout was conducted 1 -19-8ED. The last quarterly certification of the "Bowman" wastepiIe, Sutey and Rock Tunnel Waste d1sposal area waE conducted 1/19/88. Their special use permits for Garfield and Pitkin county were in order . The loadout area was inspected no problem- noted with the exception of a fuel tanl: tha+ was not bermed . I asked Mr . Jones if his: spill prevention and containment plan for the area addressed the situation. I told him that I would call him about it C6 �~ ^y :��- mp� w�=�~8 ^ - - t'K, 4.), A..S wm~~ ' Ill. ��riC�m