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fJ SECTIONTHREE Scoping ResuR~ • It should be conveyed to the public that CAM's use of recycled water is sensitive to the acid nature of this environment. • Concerns raised about water use should not be marginalized and at the same time, current operational procedures should not be overlooked. • A complete life-cycle analysis, including any impacts on other potential users of the proposed water sources, had it not been diverted for use by the mine, needs [o be completed. • It is imperative that your EIS fully evaluate all the potential downstream and upstream impacts in addition to those anticipated at just the mine operation itself. • For water quality protection and reducing the effects of increasing soil salinity during runoff events, CDOW suggest the project proponent consider lining the gob pile. • The EPA recommends the EIS include an accurate description of surface and ground water resources, as both are essential to understand the potential effects on the project. • A discussion of project area geology, topography, soils, and stream stability in terms of erosion and mass failure potential may be necessary to adequately portray the potential risk to surface and subsurface water quality and quantity, aquatic habitat, and other resources. • The EIS should show the extent to which aquatic habitats could be impaired by project activities. This includes effects on surface and subsurface water quality and quantity, aquatic biota, stream structure and channel stability, streambed substrate including seasonal and spawning habitats, lazge organic material supplies (woody debris), stream bank vegetation, and riparian habitats. • The EIS will need to analyze potential impacts to potential drinking water. • The EIS needs to evaluate stormwater management. To protect water quality from storm water runoff, including contaminated runoff from construction and operation activities, specific practices should be detailed in the EIS and their implementation defined. • Particular focus should be given in the EIS to the transition points adjacent to any anticipated stream subsidence to ascertain if the proper stream function and channel geometries will be maintained in apost-subsidence condition. • The Grand Valley Water Users Association operates irrigation drains that might be affected by the railroad. • There are some springs on private lands that might be affected by the railroad construction. • The BLM must consider the impact that the proposed coal mine and its associated structures and activities may have on the watershed, nearby water bodies, aquatic species and habitat, and local drinking water quality. • The BLM must consider the environmental impacts that the coal mine waste disposal azea could have on the watershed, neazby water bodies, and aquatic species should chemicals and substances from the waste disposal azea enter the watershed. i LJ !J i LJ 3-10 ,