Laserfiche WebLink
Liberty Mining, LLC <br />DRMS 11 0-d Permit Application <br />October 2013 <br />EXHIBIT B SITE DESCRIPTION <br />B (a) Vegetation <br />The project area is located in the vicinity of John Brown Mesa in southwestern Colorado near <br />the Utah border. The mine site is situated in a semiarid high desert climate characterized by <br />pinon- juniper woodlands, forbs, sage and other brush and grasses in rocky soils. The pinon - <br />juniper community occurs on canyon slopes and mesa tops. The major canopy species in the <br />pinon- juniper woodlands are pinon pine (Pinus edulis), and two species of juniper (Juniperus <br />scoporum and Juniperus osteosperma). The density of the pinon- juniper canopy is dependent <br />upon soil depth and the degree of slopes. Shallow soil depth and steep slopes have a density <br />of 10 to 30 trees per acre, while deeper soils and shallow slopes yield 140 to 190 trees per acre. <br />The majority of the forb species associated with the pinon - juniper community include <br />serviceberry (Amelanchier utahensis), four -wing saltbush (Atriplex canescens), snowberry <br />(Symphoricarpos oreophilus), mountain mahogany (Cercocarpus spp.), winter fat (Certacides <br />lanata), cliff rose (Cowania Mexicana), arrow leaf (Balsamorhiza sagittata) and Mormon tea <br />(Ephedra viridis) among others. Large sagebrush species are comprised of fringed sagebrush <br />(Attemisia frigida) and rabbitbrush (Chrysothamnus Nutt.). The forbs -grass community is mostly <br />found on mesa tops; on shallow slopes along ridges and canyon bottoms. The grass <br />community includes needle and thread grass (Hesperostipa comate), Sandberg bluegrass (Poa <br />secunda), sand drop seed (Sporobolus cryptandrus), Indian ricegrass (Achnathemm <br />hymenoides), western wheatgrass (Pascopyrum smithii ) and Junegrass (Koeleria Pers) among <br />other species. <br />Soil Characteristics <br />The Natural Resource Conservation Service characterizes the soils in the mining area as <br />shallow soil and rock outcrops on slopes of 5 -25% that are "slightly alkali and bouldery". The <br />soil is described as mostly clay to clay loam with sandstone bedrock outcroppings. The bedrock <br />is characterized as having slopes of 50 -99% and being mostly weathered outcrops. <br />B (b) Permanent Manmade Structures <br />There are no permanent man -made structures within 200 feet of the affected area. <br />B (c.1) Surface Water <br />Surface water in the vicinity of the mine is ephemeral and only occurs during heavy precipitation <br />and snow melt events. Two ephemeral streams are in the area; Cave Canyon and North <br />Cottonwood Canyon. These streams are located approximately 0.5 and 1.2 miles away from <br />the Liberty Mine Portal, respectively. There are no significant springs, lakes, ponds., ditches or <br />other bodies of water in the vicinity that have potential to be impacted by the mining operations. <br />The surface water gradient flows toward the east - northeast; surface water from the mine area <br />flows on to the mesa below and subsequently 1.5 miles to the Dolores River at an elevation of <br />approximately 4630 feet above sea level; approximately 2200 feet below the elevation of the <br />mine portal. <br />Libe(lly Mining, LLC Moat,, Utah S M A Ref. 5321 SG- Page 9 <br />