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<br />2.06.2 Experimental Practices <br />No experimental practices have been conducted. <br />• <br />2.06.8 Surtace Coal Mining and Reclamation Operations on Areas, or <br />Adjacent to Area, Including Alluvial Valley Floors <br />(3)(b)Alluvial Valley Floor Determination <br />The results of field investigation of the permit area and adjacent area regarding <br />the existence of an alluvial valley floor are included in this permit application as <br />specific parts of sections addressing geology, hydrology, land use, soils, and <br />vegetation. The flood plain of the Colorado River is an alluvial valley floor as <br />defined in 30 CFR 710.5. However, restrictions on mining operations applicable <br />to alluvial valley floors do not apply to existing mine facilities since mining <br />operations in the permit area were active prior to August 3, 1977. Other factors <br />which do not support an alluvial valley floor which would be legitimately <br />restrictive to mining are included in the following discussion. <br />The study area is defined as a permit area and the flood plain of the Colorado <br />River approximately one-half mile downstream from the permit area and <br />21-1 (Rev. 12/16/96) <br />~` <br />