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Groundwater and Surface Water Hydrology Maps (Maps 2.04-MS and 2.04-M6) also present information regarding the location of important hydrologic features within the permit area (also Appendix 6 herein). During the preparation of the Final Environmental Impact Statement; Iron Point Exploration License, Iron Point Coal Lease Tract; Elk Creek Coal Lease Tract; Delta and Gunnison Counties, Colorado ", USDI-BLM and USDA-Forest Service, February 2000 (EIS), OMLLC provided information regarding the hydrologic resources located within the OMLLC permit azea. A summary of the information is contained within the CDMG permit Exhibit 2.04-E4, Hydrologic Information as item 11. The information is also provided herein as Appendix 3. This information satisfies the lease stipulation calling for an inventory of surface and groundwater resources. Groundwater Generally, in the Elk Creek lease area and adjacent areas, little, if any, beneficial use of ground water occurs due to limited availability and poor quality, depth to groundwater, the rugged terrain, the low permeability of geologic strata, etc. There are no identified ground water aquifers identified in the immediate area of the lease area. Perched groundwater systems can exist as springs and seeps within the Elk Creek lease area. Such isolated groundwater occurrences are associated with a lithologic unit which is or was connected to a rechazge source and having sufficient permeability to transmit ground water. Underlying these layers are lithologic units which are fine-grained and ' well cemented with low horizontal and vertical permeabilities: The recharge/discharge relationship of these springs and seeps are functions of geomorphology and seasonal variations in precipitation. Typically, discharges aze very small (less than 5 gpm) with TDS levels less than 1,000 mg/1. Most springs and seeps will tend to flow immediately during and after snowmelt, then halt flowing during the later summer months. These perched water zones can also contribute to underlying geologic instabilities, leading to hill slope failures and mass wasting with colluvial type material runout features. Springs and seeps may continue to flow from the toe areas of such colluvial features. Regionally, most such springs and seeps are left undeveloped. In some cases, springs can be developed as water sources for man-made ponds constructed of earth materials. Except for livestock and wildlife, there are no other known uses of this groundwater on the Elk Creek lease. Because of limited flows, none of the springs or seeps have been found to be tributary to the creeks located in the Elk creek lease area and, thus, have not been found to contribute • to the overall surface flows in the area.