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from overburden. Slopes of topsoil stockpiles will be no steeper than 3:1 All growth <br />medium stockpiles will be seeded with a BLM-approved seed mix to maintain a healthy <br />soil and minimize erosion. <br />Finding on the Public Land Health Standard for Upland Soils <br />The BLM Standard for Public Land Health #1 states that "Upland soils exhibit infiltration and <br />permeability rates that are appropriate to soil type, climate, land form, and geologic processes. <br />Adequate soil infiltration and permeability allows for the accumulation of soil moisture <br />necessary for optimal plant growth and vigor, and minimizes surface runoff." This standard is <br />currently being met in the project area. During mining operations it will not be met since the <br />affected soils and the infiltration and permeability rates associated with them will be totally <br />altered. This standard will be met, after mining operations are over and final reclamation is <br />achieved. <br />2.4.5 Sensitive Species <br />In additional to federally listed and candidate species, a search was also conducted for Colorado <br />BLM sensitive species with potential to occur in the San Juan/San Miguel Resource Area <br />(SJ/SMRA). Table 6 lists these species, their habitat requirements, and a determination of their <br />potential to occur within the proposed project area. Of the 24 BLM sensitive species with <br />potential to occur within the SJ/SMRA, the project area has potential foraging habitat for two <br />species of bats. <br />Table 6. Colorado BLM sensitive species with potential to occur on BLM lands within the <br />San Juan/San Miguel Resource Area. <br />SPECIES HABITAT DESCRIPTION POTENTIAL TO OCCUR IN THE <br />PROJECT AREA <br />MAMMALS <br /> Sagebrush, semi-desert, pinon- Project area provides pinon- <br />Townsend's big-eared bat juniper, and ponderosa pine. Roosts juniper woodlands for foraging, <br />(Corynorhinus townsendii) mainly in caves and mines, but also but no caves, mines, or crevices for <br /> rock crevices, buildings, and bridges.. roosting. <br /> Pinon juniper and ponderosa pine Project area provides piilon- <br /> <br />Fringed Myotis woodlands. Roosts in caves, mines, <br />juniper woodlands for foraging; <br />(Myotis thysanodes) rock crevices, buildings, bridges, and but no appropriate trees for <br /> trees such as ponderosa pine, spruce <br />roosting. <br /> or fir . <br /> Riparian woodland, semi-desert <br /> <br />Yuma Myotis scrub, and pinon juniper habitats. <br />Not asemi-arid canyon or mesa <br />(Myotis yumanensis) Strongly associated with water. <br />Roosts in mines, caves, cliff crevices, habitat adjacent to open water. <br /> buildings/bridges, and trees. <br /> Semi-desert shrubland and woodland No desert caves or canyons near <br />Spotted bat habitat; nests in cliff crevices or water; project area is not near any <br />(Euderma maculatum) caves. known roosting area. <br />Grandview Gravel Pit Expansion Environmental Assessment 31