2006-12-12_REVISION - M1987028 ‎(2)‎

• Permit No: M1987028
• IBM Index Class Name: Revision
• Doc Date: 12/12/2006
• Doc Name: Conversion Appl
• From: Colorado Marble, L.L.C.
• To: DRMS
• Type & Sequence: CN1
• Media Type: D
• Archive: No

So!? and exlog,wl land un¢ survey
Available water capacity: low.
PenneabilJty: moderately rapid.
Runoff.• rapid.
Rock outcrop
Landform: cliffs and talus.
Parent material: residuum and colluvium.
Rock type: igneous and metamorphic.
RunotF. rapid and slow.
Teewinot
Effective rooting depth: less than 20 inches.
Drainage class: well.
Depth to seasonal high water table: greater
than 6 feet.
Available water capacity: moderate.
Permeablllty: moderate.
Runoff: rapid.
VEGETATION
Potential natural common/ties:
Moran: kobresia/golden avens-curly sedge
(KomytAcrn-Caro) typical site and tufted
hairgrass/golden avens (Dece/ACro) moist site
and kobresialwhiprootciover (Komy/Trdaj
exposed site.
Teewinot: kobresia/golden avens-curly sedge
(Koury/Acro-Cams) and kobresia/whiproot clover
(KomylTrda) and golden avens/dwarf clove
(Acro(fma).
Serat stages: dominated by plants of the
respective potential natural communities.
Present vegetation: dominated by plants of the
respective poten.Gal natural communities.
USE AND MANAGEMENT CONSIDERATIONS
Atafor uses: mining, recreation, scenic vistas,
wildlife habitat, and watershed.
Mass movement potential:
Landslides: moderate.
Debris flows: moderate.
Snow avalanche: moderate.
Sediment delivery efficiency: high.
Road and trail limitations:
Cut and fill slope stability
Moran: seven.- slope and sandy materials.
Rock outcrop: slight.
Teewinot: slight.
Improved unsurfaced roads:
Moran: severe- slope.
Rock outcrop: severe- slope.
Teewinot: severe- slope.
Offroad vehicle roads and trails:
Moran: severe- slope and erosion hazard.
Rock outcrop: severe- cliffs and talus.
Teewinot: severe- slope and erosion hazard.
Foot trails and paths:
Moran: moderate- slope.
Rack outcrop: severe- ciifrs and talus.
Teewinot: moderate- slop=_.
Revegetation limitations:
Moran: severe- slope, short growing season, low
available water capacity, and low inherent
fertility.
Rock outcrop: severe- bedrock.
Teewinot: severe- slope, shallow depth to
bedrock, short growing season, low available
water capacity, and low inherent fertility.
Revegetation considerations: Cold to!eran±
plants are required to survive alpine climate.
Mulch or similar treatment will protect the soil
from erosion, help conserve soil moisture, and
protect emerging plant seedlings.
Wildlife management considerations: This map
unit provides foal and limited shelter during
summer months.
Other management considerations:
Management activities are limited by cold climate,
steep slopes, rock outcrop, and erosion hazard.
Alpine plant associations vary from area to area
and are controlled by miuosite conditions. This
diversiy of plant associatons creates a relatively
high degree of biodiversity on steep alpine
slcpes.
Acid precipitation buffering capacity: low.
Map Unit: 9500-Moran family -Cryaquolis -
Histosois complex, 0 to 25 percent slopes.
Ecological Land Unit: 950C-willows, grasses.
forts, and sedges on alpine cirque bottoms,
MAP UNIT SETTINGS
Location: alpine areas where igneous an
metamorphic rocks predominate.
Landform: cirque bottoms.
Parent material: alluvium.
Geologic symbol: Da and Qd.
Elevation range: 11,600 to 13,000 feet.
Aspect: ai{.
Climatic zone: alpine.
Mean annual precipitation: 30 to 50 inches.
Mean annual air temperature: 34°F. to 38°F.
Average annual snowfall: 300 to 500 inches.
COMPOSSTSON
30 percent Moran and similar sails.
30 percent Cryaquolis and similar soils.
25 percent Histosols and similar soils.
Contrasting inclusions
10 percent other wet soils that Zack development
or a dark surface.
5 percent exposed, ice scoured bedrock.