2005-10-24_REVISION - M1987028

• Permit No: M1987028
• IBM Index Class Name: Revision
• Doc Date: 10/24/2005
• Doc Name: Conv. Appl.
• From: Colorado Marble L.L.C.
• To: DMG
• Type & Sequence: CN1
• Media Type: D
• Archive: No

Soil and ecologi~at Land unit survey
Revpllelation limitatfons:
Monan: moderate- short growing season, low
available water capacity, and low inherent
feriility.
Roek outcrop: severe- cliffs and talus.
Cryaq~uolla: severe- high water table.
Revetletatlon considerations: Cold tolerant
plants are required to survive alpine climate.
Muir;h or similar treatment will protect the soil
horn erosion, help conserve soil moisture, and
proUact emerging plant seedlings. Revegetating
Crysrquoiis soil with riparian vegetation requires
maintaining a high water table.
Wlldlrife management considerations: This map
unit provides food, shelter, and water tc upland
gams animals. Where streams occur, this map
unit provides aquatic habitat.
Other management cons/deratfons:
Management activities require buffer zones to
protect riparian habitat.
Acid,preciprtation buffering capacity: moderate.
Map Unit: 910R--Moran family -Rubble land -
Teewinot family complex, 5 to 40 percent slopes.
Ecological Land Uni4: 910R-alpine grasses,
sedges, and (orbs on alpine mountains.
MAP UNlT SETTINGS
Locatlon: alpine areas where igneous an
metamorphic rocks predominate.
Landfonn: mountains.
Parent material: residuum and colluvium.
GeoFogk symbol: Tmi, Xb, Xffi, Xg, and Yo.
Elevattlon range: 17,600 to 13,500 feet
Aspect: alt,
Climatic zone: alpine.
Merin annual precipitation: 30 to 50 inches.
Me>:m annual air temperature: 34°F. to 36°F.
Avsvage annual snowfall: 300 to 500 inches.
Subsaii layer(s):
10 to 20 inches -yellowish brown, very gravelly
sandy loam.
20 to 32 inches -light yellowish brown, very
cobbly sandy loam.
Substratum layer(s}:
32 to 60 inches -Tight olive brown, very cobbiy
sandy foam.
Teewinot
Surface layer(s):
0 to 4 inches -dark grayish brown, very stony
bam.
4 to 10 inches -brown, very stony )oam.
Unweathered bedrock:
10 inches -hard gneiss bedrock.
SOiL PROPERTIES AND QUALITIES
Moran
Effective roofing depth; greater than 2D inches.
Drainage class: somewhat excessively.
Depth to seasonal high water table: greater
than 6 feet.
Available water capacity: k>w.
Permeabitify: moderately rapid.
Runoff: medium.
Rubble land
Landfwm: talus and felsenmeer on boulder
fields.
Parent material: residuum.
Rock type: igneous and metamorphic,
Runoff: slow.
Teewlnot
Effective rooting depth: less than 20 inches.
Drainage class: wail.
Depth to seasonal high water table: greater
than 6 feet.
Available tarater capacity: moderate.
Permeability: moderate.
Runoff: rapid.
VEGETATION
GOMPOSiT7ON
50 percent Moran and similar soils.
20 percent Rubble land.
20 percent Teewinot and similar soils.
Contrastlng Inclusions
10 percent soils that lack a dark surface on
e~:posed, convex slopes.
TYPICAL PROFILES:
Moran
Surface layer(s):
0 to 2 inches -dark grayish brown, gravelly
sandy loam.
2 'to 10 inches -brown, gravelly sandy loam.
Potential natural communttias:
Moran: kobresia/gotden evens-curly sedge
(KomyJAcro-Caro) typical site and tufted
hairgrasslgoklen evens (DeceJAcro) moist site
and kobresiaMrhiproot Cover (Komylrrda)
exposed site.
Teewinot: kobresia/goiden evens-curly sedge
(Koury/Acro-Caro) and tufted hairgrasslgolden
evens (Komy/Trda) and golden avensldwarf
clover (AcroiTma}.
Sena stages: dominated by plants of the
respective potential natural communities.
Present vegetation: dominated by plants of the
respective potential natural communities.