2008-03-03_PERMIT FILE - C2006085 ‎(2)‎

• Permit No: C2006085
• IBM Index Class Name: Permit File
• Doc Date: 3/3/2008
• Section_Exhibit Name: 2.04 Information on Environmental Resources
• Media Type: D
• Archive: No

upstream headwater areas result in relatively high flow velocities,
narrow ste2im channels and low levels of TSS, TDS, and soluble
mineral master. As the stream enters the transitional zone adjacent to
the permit ~~rea, it flows at lower gradients across more erodible
sedimentary strata of the synclinal basin. The ongoing natural erosion
results in increased TSS levels and mineral content. The other minor
drainages in and adjacent to the permit area originate and flow
through the: sedimentary beds of the synclinal basin, and similarly
exhibit relatively high levels of TDS, TSS, and mineral content.
Locations o~f the described drainages, their relationships and drainage
basin boundaries .are shown in Exhibit K on the Local Drainage Basins
map.
Identificatic-n of surface water drainaaes
The proposed permit area and adjacent areas are drained by Chandler
Creek, Fawnn Hollow, 'Spring Creek', and an unnamed drainage.
Chandler Creek is the predominate drainage in the area, however it
has a relatively small drainage area and its flows are ephemeral as are
all the other referenced drainages.
The most significant drainage in the permit and adjacent areas is
Chandler Creek, an ephemeral stream with headwaters at an elevation
of approximately 9,120 feet in the Wet Mountains, approximately 7.5
miles west of the permit area. It is a major drainage in the area with a
total drainage area, above and within the permit boundary, of
approximately 18 square miles, and joins the Arkansas River
approximately 1.7 miles below the permit area. Chandler Creek is
typical of a transitional stream channel with the headwaters area
exhibiting ~-roperties of the mountainous environment, an intermediate
interval where the stream channel broadens and becomes shallower
with significant down cutting and erosion as progressive stabilization
occurs, and a lower reach through the permit area typical of lowland
drainage wiith broad, shallow stream channel and adjacent terrace
deposits. Tl~e channel base is comprised of poorly sorted
colluvial/alluvial material and flow pattern which is dependent upon
snowmelt oar major thunderstorm events.
Fawn Hollow drainage is a relatively small ephemeral drainage
centrally located in the proposed permit area. The drainage area
encompasses approximately 1.4 square miles, the majority of which is
within the ~~ermit area. The Fawn Hollow drainage headwaters are just
outside the southwest corner of the permit area at an elevation of
approximately 5,660 feet. The drainage flows in a northeasterly
2.04-25 Revised 11/05/07