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CONTAINING RECORDS OF WATER DISCHARGED FROM THE MINE, CONSUMED IN THE MINE AND IMPORTED FOR USE WITHIN THE MINE; AND A DISCUSSION OF WATER BALANCE WITHIN THE MINE. THE INFLOW STUDY IS TO BE DONE DURING THE SPRING OF EACH YEAR WITH THE REPORT SUBMITTED BY J?TLY 1. The language of'. Stipulation No.7, pertaining to collection and reporting of hydrologic monitoring data, has been incorporated into pages 2.05.6-52 through 2.05.6-54 of the permit application, and is considered satisfied. These long-term data records are necessary to identify any pattern of water quality changes. EFCI's hydrologic monitoring plan should be adequate to predict possible hydrologic impacts and determine if a modification of surface or underground mining activities, to minimize disturbances to the prevailing hydrologic balance, is necessary (Rule 4.05.13.(1)(b)). The Southfield Mine workings have the potential to deplete the quantity of groundwater through mine-induced groundwater flows. The mining operation will induce inflows by dewatering the coal seam and the associated roof and floor strata as the mine workings advance. In addition, overlying aquifers could be dewatered through subsidence-related fractures. Locally perched groundwater aquifers in strata above the workings may be dewatered through subsidence cracks or fractures. Thus the water will drain down through the fractures to the voids created by the mine. The greatest potential effect,on ground water is for perched aquifers in the Vermejo and the overlying Raton Formations to be dewatered by subsidence. Wells that use these perched aquifers could experience drawdown effects. However, due to the low hydraulic conductivity of the associated aquifers, the fact that the aquifers in this area tend to be laterally discontinuous and the effects of past surface and underground mining, ground. water impacts (both magnitude and extent) are difficult to predict. The operator is obligated to comply with Rule 4.05.15 pertaining to water rights and replacement if an owner is injured as the result of the operation. The ground water monitoring plan has been designed to identify ground water impacts before they extend to water supply wells. These measures will ensure a better understanding of the impacts to the ground water system and protection of water resources in the future. Southfield Mine Permit Renewal 03 42