2012-03-07_PERMIT FILE - C2010088 (22)

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ALLUVIAL VALLEY FLOOR DETERMINATION CAM - COLORADO PROPOSED COAL LOADOUT NEAR FRUITA MESA COUNTY9 COLORADO FEBRUARY 2011 INTRODUCTION CAM- Colorado LLC proposes to build a Unit Train Loadout on property formerly associated with the Fruita Refinery (refinery). The site is about 3 miles west of Fruita, Colorado along the Interstate 70 (I -70) corridor, between State Highways 6 and 50 and I -70 (Figure 1). The refinery operated between 1957 and 1993, and has been vacant since. Portions of the property were remediated more recently for hydrocarbon contamination, but the property is still considered a Brownfield site. The proposed loadout would be on the western edge of the former refinery on land once used for farming waste petroleum compounds. The center of the proposed loadout would be approximately 0.6 mile north - northeast of the active channel of the Colorado River and about 0.25 mile southeast of Reed Wash, a small tributary to the Colorado River (Figure 1). The loadout would consist of a rail loop to accommodate a unit train, a coal stockpile, loading facilities, and an access road through the former refinery. Coal would be transported via truck to the loadout from the McClane Canyon Mine, where it would be stockpiled for loading. There would be other support facilities, such as a maintenance trailer, a water source to be used for dust suppression, and ground water monitoring wells. The coal stockpile would be above a reclaim tunnel. The coal stockpile would be sited over native, low permeability clayey material. Investigation The alluvial valley floor (AVF) investigation of the site consisted of a site visit and discussion with the Natural Resources Conservation Service (MRCS). The investigation included a review of existing geologic maps, existing air photography, ground water quality data from existing monitoring wells, geologic logs of monitoring wells, and results of a