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<br /> <br />identified in Sudduth Draw (p 785-16aa). The analysis of regional flood irrigation practices <br />(Exhibit 38) does not indicate that the area is capable of flood irrigation. <br />Alluvial Valley Floors -Illinois River -Findings <br />1. The proposed surface coal mining operations would not interrupt, discontinue, or <br />preclude farming on an alluvial valley floor. <br />The tipple is already in existence. Areas immediately adjacent to the loadout include <br />the marsh, a lumber mill, and the railroad. The bench itself, although located within <br />the floodplain, is in a marshy area that would not have supported agricultural activities <br />prior to bench constructions. <br />2. The proposed surface coal mining operations would not materially damage the quantity <br />and quality of water in surface and groundwater systems that supply those alluvial <br />valley floors or portions of alluvial valley floors. <br />Nearby areas within the Illinois River Alluvial Valley Floor are used for pasture and <br />grazing lands, irrigated hay field, and as wildlife habitat (page 785-36). Tipple <br />operations would not diminish the supply of surface water to the Alluvial Valley Floor. <br />Monitoring of sediment pond effluent and the adjacent irrigation ditch has not <br />indicated any adverse change in water quality. <br />The tipple is located in a groundwater discharge zone; surface flow is diverted away <br />from coal stockpiles; and structures and stockpiles are located above the alluvium on a <br />compacted man-made fill, therefore no effects are anticipated. <br />3. Surface coal mining and reclamation operations would be conducted to preserve, <br />throughout the mining and reclamation process, the essential hydrologic functions of <br />the alluvial valley floor. <br />The tipple operation would not physically disturb adjacent alluvial valley floors. The <br />supply of surface water supplied to the alluvial valley floor would not be affected by the <br />loadout facilities. <br />Alluvial Valley Floor -Canadian River -Findings <br />1. The proposed surface coal mining operations would not interrupt, discontinue, or <br />preclude farming on an alluvial valley floor. <br />Marr Strip Mine, C-80-006 26 December 9, 1992 <br />