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Thy ails Inforrnatlon b not dNe /' • speeific~lNe imrestigation, / Nesting nalysis by competent personnel is needed befon: construe ~y3S lion or other engineering use of soils. • 64--Louviers-Travassilla complex, 20 to 50 percant slopes. T'iis map unit is on hills, ridges, hogbacks, and canyonsides. The native vegetation is mainly pinyon and juniper. Elevation is 5,300 to 6,300 feet. The average annual precipitation .is 13 to IS inches, the average annual air temperature is 48 to 52 degrees F, and the average frost-free period is 120 to 150 days. This unit is about 40 percent Louviers soil and 35 percent Travessilla soil. The Louviers soil is on side slopes and on the scarp side of hogbacks. The Travessilla soil is on canyon rims, ridges, the upper part of side slopes, and on areas of weather- resistant bedrock on hogbacks. Included in this unit is about 5 percent sandstone Rock outcrop on ridges, canyon rims, and side slopes. Also included is about 5 • percent moderately deep, clayey soil on side slopes. Also included is about 5 percent Casca~o very gravelly sandy loam on the crest of side slopes and on foot slopes. The Casca~o soil is deep and gravelly. Also included is about 5 percent deep Kim loam and 5 percent deep Otero sandy loam in drainageways. A few small areas of Gypsum land along the south edge of Six mile Park are also included. The Louviers soil is shallow and well drained. It formed in residuum derived dominantly from shale and silts tone. Slope is 20 to 50 percent. Typically, the surface layer is light brownish gray very channery clay loam about 3 inches thick. The substratum is mainly clay about 13 inches thick over shale at a depth of 16 inches. The soil is neutral to 3 inches, mildly alkaline to 6 inches, and neutral below that depth. Similar soils that are calcareous and moderately • alkaline are also found in this unit. The surface layer is very cobbly or very stony in some areas. icy