_GENERAL DOCUMENTS - C1981017 (219)

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- 4 - Monitoring Parameters Field Lab Flow or water surface level Bicarbonate Temperature Sulfate pH Sodium Conductivity Calcium Chloride Magnesium SA Iron TDS TSS Both surface and ground water sites are sampled and measured bi-annually. Annual hydrologic reports are made to the Division and contain the most current data. The findings document of 1984 includes stipulation No. 3 to the surface water monitoring program. This stipulation has been satisfied and is no longer in effect. VI. Ground Water Hydrology - Rules 2 .04.5 , 2.04.7 , 2.05.3 (4 ), 2.05.6(3) and 4.05 No changes are required to this section of the findings document except for the monitoring program which has been covered in the previous section. VII. Probable Hydrologic Consequences of Mining in Cumulative Hydrologic mpact Study - Rules an c This section was written for the worst case projected disturbance by coal mining on the Roaring Fork Basin. The Garfield Energy-Sunlight Mine has closed since the original writing of these findings and never affected the proposed worst case acreage. The Snowmass Coal North Thompson Creek Mines have also closed since the original writing of the findings and the projected worst case life of mine area was never disturbed. This area was reclaimed during the previous permit term. A treatment facility has been installed at the North Thompson Creek Mine for drainage from the No. 1 mine portals. This discharge has a high iron content. Effluent limitations imposed on discharge into the North Thompson Creek are being met, and no effect above that predicted in the original Cumulative Hydrologic Impact Study for the Roaring Fork Basin is occurring. The life of mine area projected for the Coal Basin Mines has been increased during the past permit term from the originally projected 10,248 acres to the present 11 , 386 acres. Of this area 333 acres are actually disturbed by surface facilities instead of the 432 acres originally stated.