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_2_ <br />i <br />~ obtain the desired aggregate sizes. Further <br />processing consists <br />of washing rock for concrete aggregate or the production of <br />paving materials using a bituminous asphalt plant. Dirty water <br />from the gravel washing operation is channeled to the settling <br />pond in order to prevent direct discharge to the river. All <br />crushers, wasty~lT plants, and asphalt plants used in this <br />processing are portable and are located throughout the: pit area as <br />required. Time of processing is approximately one to two <br />months per year for each type of operation. <br />The processed material is stockpiled in the areas shown <br />oa the general map expect for hot bituminous pavement which is <br />immediately hauled to the job site. <br />No stripping of topsoil or other overburden is performed <br />in this operation. The areas of excavation are river washed rock <br />and do not have any overburden. The areas shown on ttie soils <br />maps as containing topsoil are used as stockpile area:> and have <br />not had any topsoil removed. <br />The washed sand and gravel is used primaril;7 to <br />produce concrete for the Durango area. Concrete is bitched on <br />the premises and hauled to the job sites by truck. The haul <br />road from the pit area to U.S. ftighway 550 is as existing road <br />approximately 25 feet wide and 700 feet long. This road is not <br />in the permit area aad is not planned for reclamation. <br />