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/ ') - :'1[1,3335 This the smallest, landslide in the area is similar in some respects to the Dowds No.1 Landslide. Large blocky material derived from the Minturn Formation predominates with a clay and sand matrix. Field work indicates that landslide material above the slump that recently temporarily closed the road is in a very unstable and precarious position. It should be expected that such slumping will continue and that road closures will happen again. However, it appears as if there is not enough highly unstable material in this Jands1ide to form a landslide dam of the Eagle River. Nevertheless, this Jands1ide will continue to be a threat to the Interstate, The construction work done so far to reduce this threat will probably not be very effective, and continuing problems in this area should be expected, CONCLUSIONS AND RECOMMENDATIONS The Dowds Junction landslide investigation is not complete, The instrumentation systems that were installed became operational too late in the season to make definitive evaluations and recommendations based on data obtai ned from them. In addi ti on, the inoperative i nc1 i nometer at the Whi skey Creek landslide should be replaced before next season to complete the monitoring capability there as was originally planned, At Meadow Mountain the most prudent and conservative course of action to reduce landslide potential will be to continue to keep as much surface water off the landslide as possible. This will entail draining of the one ephemeral pond and mi nimi zi ng water flows in natural drainages and i rri gati on di tches. As a longer term data base from the monitoring system is developed it should gecome apparent which parts of the Meadow Mountain landslide are actively ~oving and most threatening, At that time permanent adjustments to the "ilrainagecou1d be made based on more complete information. This should satisfy the concerns of the U.S. Forest Service that relate both to their potential liability and to water and grazing issues. It should be anticipated that losses of highway service caused by this landslide will recur. Upgrading of the detour around the slide area should be considered by the affected government units. The Dowds No.1 landslide should be carefully monitored, with weekly readings as a minimum, during the 1986 snowmelt runoff season. If increased water levels in the water-monitoring holes are directly related to inclinometer deviations, and EDM point movements, then a drainage and dewatering system should be installed here, Even though, from our work, it, appears as if massive large-scale landsliding is not imminent, substantial reduction in the possibility of it, combined with reduced maintenance of the highway would undoubtedly justify the expense of installing the system, - 13 -