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<br />The Midway soil is shallow and well drained. It formed in residuum derived dominantly <br />from shale. Slope is 15 to 40 percent. Typically, the surface layer is grayish brown very <br />gravelly clay loam about 3 inches thick. The upper 4 inches of the underlying material is clay. <br />The lower part to a depth of 15 inches. The soil is mildly alkaline to a depth of 7 inches and <br />moderately alkaline below that depth. <br />Permeability of the Midway soil is slow. Available water capacity is very low. Effective <br />rooting depth is ] 0 to 20 inches. Runoff is rapid, and the hazard of water erosion is high. <br />The Cascajo soil is deep and excessively drained. It formed in gravelly and sandy <br />alluvium. Slope is 10 to 40 percent. Typically, the surface layer is very dazk grayish brown very <br />gravelly sandy loam about 6 inches thick. The upper 15 inches of the underlying material is <br />extremely cobbly sandy loam. The lower part to a depth of 60 inches is extremely cobbly sand. <br />The soil is moderately alkaline. A high content of accumulated calcium carbonate is between <br />depths of 6 and 21 inches. <br />Permeability of the Cascajo soil is moderately rapid to rapid. Available water capacity is <br />low. Effective rooting depth is 60 inches or more. Runoff is medium to very high, and the <br />hazazd of water erosion is moderate to very high. <br />This unit is used for rangeland. <br />The potential plan community on this unit is mainly sideoats grams, blue grams, <br />needleandthread, Indian ricegrass, and little bluestem. The average annual production of air-dry <br />vegetation is about 800 pounds per acre. If the condition of the range deteriorates, red threeawn <br />and annual fortis increase. <br />This unit is poorly suited to homesite development. The main limitations aze shallow <br />depth to shale bedrock and steepness of slope. <br />This map unit is incapability subclass VIIe, non-irrigated. It is in the Gravel Breaks #64 <br />range site. <br />83--Penrose-Minnequa complex, 2 to 25 percent slopes. This map unit is on ridges, <br />plains, and short breaks. The native vegetation is mainly grasses. Elevation is 5,000 to 5,400 <br />feet. The average annual precipitation is 11 to 13 inches, the average annual air temperature is <br />50 to 53 degrees F, and the average frost-free period is 150 to 170 days. <br />This unit is about 45 percent Penrose soil and 40 percent Minnequa soil. The Pettrose <br />soil is mainly on ridges, breaks, and steeper azeas. Scattered juniper trees are common on areas <br />of Penrose soil. The Minnequa soil is mainly on side slopes and gently sloping azeas. <br />Included in this unit is about ]0 percent deep Manvel silt loam on toe slopes and swales. <br />Also included is about 5 percent limestone rock outcrop on the tops of ridges and on breaks. <br />Also included are small azeas of moderatly dep, clayey Gaynor silty clay loam in draingeways <br />along the east base of Skyline Ridge in Canon City. <br />The Penros soil is shallow ans well drainged. It formed in residuum derived dominalnty <br />from limestone. Slope is 2 to 25 percent. Typically, the surface layer is light brwonish gray <br />channery loam about 4 inches think. The substratum is channery loam about ] 1 inches thick <br />over limestone at a depth of 15 inches. The soil is moderatly alkaline. <br />Permability of this Penrose soil is moderate. Availabe water capacity is very low. <br />Effective rooting depth is 10 to 20 inches. Runoff is slow to very rapid, and the hazard of water <br />eroision is slight to very high. <br />