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' EXHIBIT J- Vegetation <br /> The permit site is located in an area dominated by rangeland type vegetation. The site has a sparse (25 <br /> ' to 50 percent) cover of grasses with minor forbes and shrubs. Figure J-1 shows the soils and vegetation <br /> on the mine site. <br /> ' The soil unit covering the largest portion of the site is the Valmont clay loam, which commonly forms <br /> high terraces and alluvial fans. This soil is well drained and forms in clayey, cobbly to gravelly alluvium <br /> with less than a three percent slope. The predominant native vegetation is western wheat grass, green <br /> needlegrass, and blue grama. The average annual production of air-dry vegetation ranges from 600 to <br /> 1,200 pounds per acre (Soil Survey of Golden Area, Colorado, 1980). <br /> ' The second most widely spread soil unit at the permit area is the Midway soil. This soil forms on <br /> calcareous, clayey material derived from shale and mudstone on hill slopes. The soil is a shallow, well <br /> drained clay loam. Commonly weathered shale is at a depth of about 14 inches. Permeability is low. <br /> I This soil has formed on the slope breaks between the three alluvial terraces present. The native <br /> vegetation is mainly western wheatgrass, green needlegrass, sideoats grama, and needleandthread. The <br /> average annual production of air-dry vegetation ranges from 700 to 1,000 pounds per acre (Soil Survey <br /> Iof Golden Area, Colorado, 1980) <br /> The last soil unit, which will be only minorly affected by the pit operation, is the Veldkamp-Nederland <br /> very cobbly, sandy loam. The native vegetation is mainly big bluestem, little bluestem, blue grama, and <br /> mountain muhly. The average annual production of air-dry vegetation ranges from 1,000 to 2,300 <br /> pounds per acre (Soil Survey of Golden Area, Colorado, 1980). The range carrying capacity for all of <br /> these soil/vegetation units is low. <br /> The range carrying capacity for all of these soil/vegetation units is low. <br /> Table J-1 lists forbes, low-shrubs, and cacti, which, while not dominant species, could be expected to <br /> occur in the quarry site area. <br /> Table J-1 Vegetation Expected to be Found at Mine Site <br /> COMMON NAME SCIENTIFIC NAME <br /> Yarrow Achillea lanulosa <br /> Dandelion Taraxacum o icinale <br /> Beard tongue Penstemon virens <br /> Pursh Viola nuttalli <br /> Sand lily Leucocrinum montanum <br /> Silver Bladder-pod Lesquerella ludovidana <br /> r Silver sage Artemesia cans <br /> Fringed sage Art.frigida <br /> Ball cactus Coryphantha WWpara <br /> Prickly-pear Opuntia compressa <br /> Nipple cactus Coryphantha missoruiensis <br /> I - 1 <br /> IFS -; ' SERGENT, HAUSKINS & BECKWITH <br /> i r B I CONSULTING GEOTECHNICAL ENGINEERS <br /> PHOENIX•TUCSON•ALSUOUEROUE <br /> DENVER/LAKEWOOD•SALT LAKE CITY•EL PASO•RENOWARKS <br />