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STUDY AREAS <br />The Maxwell Mine encompassed grassland and pinyon -juniper <br />vegetation types. The grassland type was found on a level plateau <br />approximately 7200 ft. in elevation. It was characterized mainly by <br />blue grama (Bouteloua gracilis), with western wheatgrass (Agropyron <br />smithii), fringed sagebrush (Artemisia frigida), and other grasses <br />and forbs interspersed. The grassland type exists on fairly shallow <br />soils, resulting in greater water runoff and less penetration. Pre- <br />cipitation is low and infrequent. <br />The pinyon -juniper type was located on a north to northwest - <br />facing slope of approximately 7200 ft. elevation with a slope of `. <br />17-220. It was characterized by an overstory of pinyon pine (Pinus <br />edulis) and Rocky Mountain juniper (Juniperus scopulorum). Fringed <br />sagebrush (Artemisia frigida), milkvetch (Astragalus striatus), and <br />numerous other shrubs and forbs constituted the understory. The <br />pinyon -juniper type occurred on shallow, stony soils with a warm and <br />relatively dry exposure. The soils were a light brown sandy loam. <br />The Allen Mine permit area included the Ponderosa pine -Douglas <br />fir -oak, Ponderosa pine -oak, and willow carr vegetation types. The <br />Ponderosa pine -Douglas fir -oak vegetation type was located on a <br />north -facing slope at 7600 ft. elevation and with a slope of 30°. It <br />consisted of an overstory of mainly Ponderosa pine (Pinus ponderosa) <br />and Douglas fir (Pseudotsuga menziesii). Other tree species were . <br />pinyon pine (Pinus edulis) and Rocky Mountain juniper (Juniperus _ <br />C <br />