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iI ~ . lvtemo. Walker to Renner May 25, 1999 Page 2 of 2 Pages the south side of County Road 1 17) sedimentation pond. This pond will collect runoff from the disturbed areas of the crib wall removal. The lower portions of the upper bench clear water diversion ditch needs to be re-established (this work is significant enough to require small egipment). This repair would inhibit upland runoff from crossing the upper portal areas disturbed by reclamation activities. Five small aeeas in the upper reaches of the ditch need to be cleared (by hand). AML or 1 could accomplish this work. OTHER. As part of this project, recommend the scrap iron of the dump be salvaged or buried (at [he option of the contractor) along with the coal mine waste materials or at the toe of slope at the uphill side of the lower (air portal) bench. This pile of mining equipment residue might attract people from the nearby Sunlight Ski (and recreation) area, and thus presents a (moderate) safety hazard. The remaining dump might be covered with spoil and seeded. However, as this dump is at the edge, if not in, the 100-year flood plain, eventual exposure of any materials lefr would be anticipated. Trash in the ditch from the air portal seals might also be cleared. Grading out of the upper bench would eliminate this side-road run-out, and the gate posts, berm, etc. at the entrance could be removed. There are two barrels (55-gallon drums) of unknown material on the site. As part of this, or a separate special contract, recommend the contents of these barrels be determined and the drums be disposed of as appropriate. This work might be expedited so the drums do not interfere with the routine reclamation work. As another project, there is settlement at the air shaft in the NW '/a NW '/~ of Section 34, T7N, R89W, approximately 1,600 feet north of the upper portals (crib wall area). Collapsed timbers and a 10-foot-deep depression suggest failure of any plug that may have been placed in the shafr. There is an adjacent depression, leaving a depressed area about 30 feet long, 15 feet wide, and up to 10 feet deep at the site. No significant surface drainage appears to be directed to the shafr, but direct precipitation enters the underground mine workings. This site may have the potential to open up into a vertical air shaft to the working below, presenting a threat to personnel engaged in ranching, hunting, or trespassers from the nearby ski area. As an expedient measure, the area might be fenced with 4-wire barbwire, strong steel posts, and signage. The access road is in good shape, overgrown with grass, and, when dry, could sustain light traffic without undue damage. The current landowner of record at the Garfield County courthouse (18 May 1999) is John M. Stirling, 704 Stripper Lane, Carbondale, CO 80162-3880. Please contact me if you have any questions concerning these comments. Cc: Jim McArdle Dan Hernandez