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Soil and ecological land unit survey <br /> Road and trail limitations: <br /> Landform: u <br /> Cut and fill slope stability <br /> Sphinx; moderate- unconsolidated materials. <br /> Parent material:ial:plaplains, hills, and mountains. <br /> residuum. <br /> Rock outcrop: moderate-cliffs. Geologic symbol: Y , Y <br /> Elevation range: 8,500 to 10,500 feet. <br /> Improved unsurfaced roads: g <br /> Sphinx: severe-slope. Aspect: all, <br /> Rock outcrop: severe-cliffs <br /> Mean annual Climatic zone: <br /> Offroad vehicle roads and trails: montane, dry. <br /> precipitation: 12 to 20 inches. <br /> Sphinx: severe-slope and severe erosion Mean annual air temperature: <br /> hazard. Average annual snowfall: 100 o6200to inches. <br /> Rock outcrop: severe-cliffs. <br /> Foot trails and COMPOSITION <br /> paths: <br /> Sphinx: severe- slope and severe erosion 85 percent Legault and similar soils. <br /> hazard. <br /> Rock outcro cliffs. <br /> Contrasting inclusions <br /> Revegetation limitations: 10 percent exposed bedrock. <br /> Sphinx: 5 percent deep soils on swaies and toeslopes. <br /> severe- slope and severe erosion <br /> hazard, low available water capacity, low TYPICAL PROFILES: <br /> to.oft Legault <br /> inherent fertility, and shallow depth <br /> bedrock. inches-Surface covering <br /> layer" <br /> P: severe. conifer litter <br /> Revegetation considerations: Trees are stow to <br /> return after a considerate.ions: <br /> Plantings are sl Surface layer(s): <br /> tolerant grasses and forbs have the best chance <br /> 0 to 2 inches -brown very stony loamy sand. 1 <br /> of success. Mulch or similar treatment will protect Subsurface layers) <br /> the soil from erosion, help conserve soil moisture. 2 to 11 inches -very pale brown, very gravelly <br /> and protect emeroing plant seedlings. loamy Sand. r <br /> Timber mectconsiderations: Substratum layer(s)- <br /> slope rock outcrop, severe erosion hazard,Limited by 11 to 16 inches-brownish yellow, extremely <br /> Nindthrow hazard, and low available water gravelly loamy coarse sand. <br /> capacity on sha:lnw soils. Plant trees that are Weathered bedrock: <br /> drought tolerant or revegetate with grasses and 16 to 60 inches -soft granitic bedrock (grus) <br /> forbs. Trees to plant include ponderosa pine and gtau PROPERTIES AND QUALITIES <br /> Rocky Mountain juniper. <br /> Wildlife management considerations: Effective rooting depth: less than 20 inches. <br /> nnislateDepth to seasonal high water table:p Drainage class: excessively. IP <br /> unit provides shelter and limited food du <br /> sprang through fall months. Thinningg greater <br /> smallopenings in the overstory or creating than 6 feet. <br /> IN <br /> stimulate understory productivity ancpy cover can Available water ca act <br /> Other management considerations: <br /> Permeability: p �'' very low <br /> Management activities are limited by slopes, rock Very rapid. <br /> Runoff: slow. <br /> a <br /> outcrop and severe erosion hazard <br /> Acid precipitation buffericapacity: <br /> VEGETATION <br /> g ca P acit :y low. Potential natural communities: <br /> Legault: Douglas-fiir/kinnikinnick-common <br /> Map Unit: 795M—Legault juniper(PsmelAradl-Juco) and lodgepole <br /> Le ault family, 5 to 40 percent111 <br /> slopes. pineikinnikinnick (Pico/Arad1), <br /> Ecological Land Unit: 795M i Sera/stages: dominated by plants of the <br /> Doug,as fir and respective potential natural communities. <br /> Iodgepole pine on montane, dry upland plains Present vegetation. dominated by plants of the <br /> hills, and mountains respective potential natural communities. <br /> AAP UNIT SETTINGS <br /> _ocation: mountainous areas where granitic rocks <br /> r-•lominate. <br /> Page 13G DRAFT 4/27!95 <br /> 1 <br />