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Somerset Mine -4- April 24, 1987 Water Pipeline. The 200,000 gallon water tank in the Elk Creek Yard area will remain following permanent reclamation. However, the 6 inch pipeline connecting the water tank with the pump house near the north fork of the Gunnison River will have to be replaced. Installation of the new pipeline will cost approximately 525,000.00. This cost needs to be included in the reclamation plan. The Division also needs a design for installation and a map showing the location of the new pipeline. Hubbard Creek Alignment. The artificial alignment of Hubbard Creek created during construction of the lower Hubbard Creek vent fan facilities may change following reclamation and revert back to more natural conditions. Assuming this will happen, regrading of the bench area will involve moving an extra 30,04)- 50,000 yds of material. The Division has not yet evaluated this potential problem and has not yet included the extra earthmoving cost in the reclamation cost calculation. This problem needs to be addressed. Elk Creek Yard area soil placement and revegetation plan. Because of the soil characteristics of the mine bench (gob) material in the Elk creek Yard Area, a six inch cover of adequate soil and an amended plant species list is needed for revegetation. These items will need to be included in the reclamation plan and their costs included in the reclamation cost calculations. K. Demolition costs as presented by Kaiser coal Corporation do not include all structure present at the Elk Creek and Bear Creek facilities. Structural dimensions and removal costs are needed for the following: Elk Creek Facilities Bear Creek Facilities Substation Substation Substation Fence Substation Fence Rock Dust Bins Ventilation Fan Dump Station Power Drill Hole Tipple B-Seam Ventilation Fan Site Maintenance and Hydrologic Monitoring Ongoing site maintenance and required submittal is required. The permittee site maintenance and hydrologic monit party (Kaiser or U. S. Steel) needs to commitments agreed to in the approved Technical Revision No. 1 processed by August 6, 1986. hydrologic monitoring and report or operator has a responsibility for gyring. Particularly, the responsible be aware of the monitoring and report Somerset Mine Water Management Plan, Kaiser Coal Corporation and approved on Site maintenance requirements consists of maintaining the sediment and drainage control system at the Bear Creek, Hubbard Creek and Elk Creek facilities and repairing any damage caused by landslides. Hydrologic monitoring consists of quarterly pond inspections and water sampling at surface water site H-1 and mine inflow sites B-6 and H-10.