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REV88252
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REV88252
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Entry Properties
Last modified
8/25/2016 3:10:27 AM
Creation date
11/21/2007 10:40:56 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1976009HR
IBM Index Class Name
Revision
Doc Date
12/2/1996
Doc Name
EXHIBIT I SOILS INFO
Type & Sequence
AM3
Media Type
D
Archive
No
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Vegetation Information <br />Side Canyon Bottoms and Turkey Creek: <br />Map Unit Name: Riparian and Transitional Riparian. <br />General Description: This is a minor vegetation unit on this site. It occupies very '.narrow <br />corridors along the bottom of the deep canyons. Although many of the species also occur on north and <br />south facing slopes, there are certain species unique to this unit. River Alder, Chokecherry, and Rocky <br />Mountain Maple are mixed with some White Ftr and Blue Spruce to form the upper and middle story. The <br />understory is composed mainly of grasses, particularly various species of Bluegrass and Bromegrass. <br />Along Turkey Creek, little of which is in the affected land, the vegetation tends more toward a typical <br />mountain canyon riparian form. A narrow, more or less flat flood plain composed of alluvicun produces <br />rich growths of conifers, particularly Blue Spruce, Douglas Fir, and some White Fir. Shrub composition is <br />similar to the side-canyons, but individual plants tend to be larger and much more abundant due to more <br />growing room and a more dependable supply of water. <br />Soil/Plant Relationships: Soils along these narrow corridors are highly variable. In some places, <br />where the stream gradient is shallow, a fairly deep alluvium forms. Usually the soil is a hi€,hly organic <br />loam blended with cobbles and boulders derived from the slopes above the canyon bottoms. Thus the soil <br />fotms a very well drained medium that is high in fertility, but contains an unusually high quantity of large <br />rocks. Moisture content is usually high, but late in the summer, during long periods without precipitation, <br />toisture levels decline and retreat into the deeper portions of the soil. <br />The soils along Turkey Creek tend to be somewhat finer in texture, although boulders :ire still <br />commonly seen projecting out of the ground. The soils here are much more mature with respect to <br />developmental processes, but still exhibit many characteristics of immature floodplain soils <br />Cover Characteristics: Vegetation cover in both the side canyons and along Turkt:y Creek are <br />similaz. Total cover is generally about 90% with canopy cover accounting for at least 3/4 cf that total. <br />Ground cover varies inversely with the canopy cover. That is, as canopy cover decreases ground cover <br />generally increases. This is undoubtedly due to additional light resources. However, that pattern is not <br />always true. If the soil is loamy, rich and lacking in large boulders, ground cover can be n.;arly 100% <br />even under a dense canopy. Thus, although shade effects may generally control the vegetation cover <br />patterns, soil texture and fertility characteristics can extensively modify that relationship, almost <br />neutralizing the effects of shade. <br />>n the appendix of this application is a copy of the Waters of the United States survey report. <br />This report provides additional information on specific vegetation units found within these drainages. <br />Although only about 0.5 acre of Waters of the United States was found on the entire site, these locations <br />exhibit a somewhat unique vegetation growth pattern. These locations are often associated with small seeps <br />in the drainage bottom, The slightly greater moisttue at these locations produces a denser I;rowth of the <br />usual species plus the addition of a few other species found in only small numbers elsewhere. For more <br />information on these small units please refer to that report. <br />Menzer Quarry Amendment Exhibit J Page 6 <br />
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