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2.05.6(6) Subsidence Survey, Subsidence Monitoring, and Subsidence Control Plan <br />East Salt Creek and Big Salt Wash are intermittent streams. The alluvium <br />of both streams is used for water wells. Both streams are considered to <br />be important to the areas hydrologic balance. <br />State Highway 139 is a paved roadway and an important north -south <br />transportation corridor between Interstate 70 and Highway 40. <br />The stockponds in the permit and adjacent area typically small with <br />surface areas that vary between 0.1 acre to less than 1.0 acre. Depths <br />also vary between 6 -inches to 8 -feet. Most of the stockponds are fed by <br />surface run-off. Stockponds along East Salt Creek derive flow from the <br />creek. <br />The local perched water -bearing zones are limited in extent and are not <br />put to beneficial use. <br />Ephemeral channels throughout the area flow only in direct response to <br />precipitation in the immediate watershed or in response to the melting of a <br />cover of snow or ice. <br />(a)(ii)(B) <br />An appropriate map showing the location and configuration of structures <br />and renewable resource lands within the permit and adjacent area: <br />Figure 4.2.2 Water Sampling Locations and Figure 1.1-3A Interests in <br />Surface Property and Water Rights, show the structures and renewable <br />resource lands identified above with the exception of the range fences that <br />are not shown. <br />(b) Description of the worst possible consequences which subsidence, if it <br />occurred, could have for such structures and renewable resource lands: <br />Rangeland and Fish and Wildlife Habitat are the land uses of the permit <br />and adjacent area and the area to be affected by the surface facilities. <br />There is a small amount of cropland use in the adjacent area. There is <br />also undeveloped land in the area to be affected by the surface facilities. <br />PR -02 2.05-69 10/12 <br />