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r <br /> 3 <br /> Alluvial Valley Floors <br /> 5. a. It is not an accepted regional practice to irrigate <br /> alluvial bodies of extent comparable to those which <br /> occur along Pine Gulch when there is no water <br /> available for irrigation. Fred M. Johnson, C.P.G. , <br /> Clifford M. Schmid, L.S. , and Dan Mathews, <br /> Reclamation Specialist of the M.L.R.D. , determined <br /> and mutually agreed, on May 30, 1990, that there was <br /> not sufficient alluvial groundwater within the <br /> permit area of Pine Gulch, to enhance the <br /> productivity of agriculturally useful vegetation. <br /> It was further agreed that Pine Gulch within the <br /> permit area was neither an AVF nor a renewable <br /> resource. <br /> b. The confluence of Pine Gulch with Hay Gulch is an <br /> alluvial valley floor (AVF) , but irrigated by <br /> diversion ditches originating at the La Plata River. <br /> The ditch right owners do not depend on flood <br /> irrigation or sub-irrigation. The S.C.S. (Cindy <br /> Dvergsten) feels that any sub-irrigation at the <br /> confluence would be from the Hay Gulch high water <br /> table. Because of support planned for PIne Gulch <br /> within the permit area and insufficient alluvial <br /> groundwater to enhance productivity of <br /> agriculturally useful vegetation, there will be no <br /> mining related impacts to the quality or quantity <br /> of water from Pine Gulch. <br /> C. The alluvial deposits along Hay Gulch have been <br /> added to the Regional Geology Map. <br />