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(e) Productivity of the soils within the permit area are very limited as <br />• <br />indicated by the capability unit ratings described. Potential for increased <br />productivity of those soils disturbed as a result of mining operations is <br />not anticipated. <br />2.04.12 Prime Farmland Investigation <br />The limited amount of surtace disturbance associated with the Roadside <br />North Portals and Roadside South Portals Facility is located in areas <br />listed as "Cameo" and "Torriorthents, warm rock outcrop" soil types. Due <br />to this designation we believe prime farmland investigation in this area is <br />not necessary. <br />None of the existing areas of land disturbed by surtace facilities is <br />considered prime farmland since, historically none of the disturbed areas <br />are used as cropland. <br />• <br />In many cases the slopes of land in disturbed areas are more than ten <br />(10) percent, such as the Roadside Refuse Pile, the Cameo Refuse <br />Piles, and the naturally occurring slopes in all of the disturbed areas <br />except the Unit Train Loading Facility and the Overland Conveyor. <br />None of the land within the disturbed areas is irrigated, nor has a <br />developed water supply. Groundwater in these areas is of poor quality <br />and not suitable for irrigation water (see Tab Section 7, Groundwater <br />Hydrology). Average annual precipitation is 9.0 inches (see Tab Section <br />S, Climatological Information), <br />• 9-5 (Rev. 12!16/96) <br />