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3. Pursuant to Rule 2.06.8(5) (a) ( iii ) and the requirements of <br /> Rule 4.24.20 ) the current and proposed future operations at the <br /> King Coal Mine will be conducted to preserve, throughout the mining <br /> and reclamation process, the essential hydrologic functions of the <br /> Alluvial Valley Floor of which Pine Gulch is part. <br /> The proposed operations is in compliance with the requirements of <br /> this section. <br /> IX. Assessment of Probable Hydrological Consequences of Mining and Cumulative <br /> Hydrologic Impacts - Rules an c <br /> A. Probable Hydrologic Consequences <br /> This section assesses the effects that the proposed future operation of <br /> the King Coal Mine, which will include the area of PR No. 2, will have on <br /> the surface and ground water systems within and adjacent to the mine area. <br /> 1 . Surface Water Effects <br /> The extent and configuration of the area currently disturbed by the <br /> King Coal Mine will not be changed in the proposed future <br /> operation. The system of surface water and sediment control for <br /> this area will not be altered. As discussed under Section VI - <br /> Surface Water Hydrology of this document, mining in the proposed <br /> area of PR No. 2 will involve no additional surface disturbance and <br /> will be conducted so as to minimize subsidence under Pine Gulch. <br /> There should be no adverse impacts upon surface water quantity or <br /> quality in Pine Gulch, in the permit or in downstream areas. The <br /> general conclusions reached in this section of the July, 1987 <br /> Findings Document (Renewal ), therefore, remain applicable. <br /> 2. Ground Water Effects <br /> The proposed enlargement of the King Coal permit area and extension <br /> of underground mining to the area of proposed PR No. 2 does not <br /> essentially change the relationship of the mining to bedrock ground <br /> water supplies. The record of bore holes reported in the current <br /> permit package and those supplied with the current application <br /> indicate the Menefee Formation, in which the mining is conducted, <br /> is essentially dry. Any perched aquifers that may be encountered <br /> and dewatered by the mining are therefore expected to be limited in <br /> extent and number. There are no local wells in the Menefee that <br /> serve as a source of water for domestic or agricultural use. There <br /> is no evidence that water from the Menefee Formation may supply <br /> base flow to any local stream or spring. <br /> The proposed future operation of the mine which will incluae the <br /> area of PR No. 2 is also not sufficiently different from the <br /> current operation to alter the conclusions reached in the <br /> July, 1987 Findings Document (Renewal ) in regard to the Hay Gulch <br /> alluvial aquifer. <br /> -7- <br />