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J. Stream Buffer Zones <br />No mining activity will occur within 100 feet of a perennial stream; therefore, this <br />section does not apply .(4.05.18(1)). <br />K. Probable Hydrologic Consequences <br />Under Rule 2.07.6(2)(c), the Division is required to make an assessment of the probable <br />cumulative impacts of all anticipated coal mining in the general area on the hydrologic <br />balance and to make a finding (as discussed in Section A of this document) that the operations <br />proposed in the permit application have been designed to prevent material damage to the <br />hydrologic balance outside of the proposed permit area. This section of the findings <br />document is divided into the following subsections: Description of the Hydrologic <br />Environment; Probable Hydrologic Consequences ofthe Terror Creek Loadout; and Summary <br />and Findings. A separate Cumulative Hydrologic Impact Study (CHIS) is available for <br />review at the Division of Minerals and Geology. The CHIS filed at the Division, assesses the <br />projected cumulative hydrologic impacts for all anticipated mining operations in the general <br />area of the Terror Creek Loadout on the North Fork of the Gunnison River Valley. <br />1. Description of the Hydrologic Environment <br />a. Regional Geology <br />For information regarding the geology of the site, refer back to the section entitled <br />Description of the Environment, Geology. <br />b. Groundwater <br />For information regarding the groundwater of the site, refer back to the section <br />entitled Description of the Environment, Hydrologic Balance. <br />c. Surface Water <br />For information regarding the surface water of the site, refer back to the section <br />entitled Description of the Environment, Hydrologic Balance. <br />2. Probable Hydrologic Consequences <br />a. Groundwater Effects and Mitigation <br />There is expected to be no impacts to groundwater by the Terror Creek Loadout, <br />due to the lack of occurrence of groundwater within the immediate area to be <br />affected by the operation. The operation is located on colluvial material <br />significantly above the elevation of the North Fork of the Gunnison River. This <br />colluvium appears to be in direct hydrologic communication with the North Fork <br />alluvial aquifer. Only minor amounts of groundwater can be expected above the <br />piezometric surface which coincides with the North Fork. Information presented <br />by the applicant with respect to a privately owned water well south of the permit <br />area indicates that water is not encountered until the river elevation is reached. <br />Operations at the Terror Creek facility will not intersect any groundwater within <br />the colluvial material due to limited excavation planned for the permit area. <br />Excavation associated with the loadout pad was completed to approximately 20 <br />13