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

Norlhem San Isabel and Western Pike National Forests, Colorado
TYP3CAL PROFILES:
Moran
Surface layer(s):
0 to 2 inches -dark grayish brown, gravelly
sandy loam.
2 to 10 inches -brown, gravelly sandy loam.
Subsoil layer(s):
10 to 20 inches -yellowish brown, very gravelly
sandy loam.
20 to 32 inches -light yellowish brown, very
cobbly sandy loam.
SubsVaium layer(s}:
32 to 60 inches -light olive brown, very cobbly
sandytoam.
Cryaquolls
Surface covering layer:
4 to 0 inches - dense mat of partly decomposed
vegetaton.
Surface layer(s):
0 to 12 inches -black, silt loam.
12 to 18 inches -black, very gravelly silt loam.
Substratum layer(s):
18 to 60 inches -dark greenish gray, very
gravelly sandy loam.
Histosols
Surface layer(s):
0 to 10 inches -slightly decomposed plant roots
and other organic material.
Subsurface layers}:
10 to 24 inches -slightly decomposed plant
roots.
24 to 35 inches - partially decomposed plant
roots,
Substratum layers}:
35 to 40 inches -dark grayish brown silty clay
loam.
a0 to 45 inches -dark grayish brown sandy clay
loam.
45 inches -weathered gneiss and schist.
SOIL PROPERTIES AND QUALITIES
Moran
Effective rooting depth: greater than 60 inches.
Drainage class: somewhat excessively.
Depth to seasonal high watertab/e: greater
than 6 feet.
Available water capacity: low.
Permeability: moderately rapid.
Runoff.• medium.
Cryaquolls
Effective rooting depth: greater than 60 inches.
Drainage class: very poody to somewhat poorly.
Depth to seasonal high water table: +1 to 1
fee±.
Avalla6/e water capacity: low to moderate.
Permeability: slow to moderately slow.
Runoff: medium.
Histosols .
Effective rooting depth: greater than 40 inches.
Drainage c/ass: poorly.
Depth to seasonal high water table: +1 to 1
feet.
Available water capacity: low.
Permeability: slow.
Runoff: slow.
VEGETATION
Potential nature/ communities:
Moran: kobresia/golden evens-curly sedge
(Koury/Acro-Caru) and tuned hairgrass/golden
avens(Dece/Acro}and (Sagl1-Sabr1tDece}
moist site.
Cryaquolls: grayleaf willow-willow/sedges
(Sagl1-SALT/CARE) stream drainages and
water sedge/beaked sedge {Caaq/Gaul} seeps.
Histosols: watersedgelbeaked sedge
(CaagJCaut) seeps and Baltic rush/sedges
(Juar/CARE) bogs.
Seral stages: dominated by plants of the
respective potential natural communities,
Present vegetation: dominated by plants of the
respective potential natural communities.
USE AND MANAGEMENT CONSIDERATIONS
Ma%or uses: recreation, scenic vistas, wildlife
habitat, and watershed.
Mass movement potential:
Landslides: taw.
Debris flows: icw.
Snow avalanche: bw.
Sediment delivery efficiency: high.
Road and trail Ifmitations:
Cut and fill slope stability
Moran: slight
Cryaquolls: severe- high water table and
saturated soil.
Nistosols: severe- high water table and
organic material;.
Improved unsurfaced roads:
Moran: slight.
Cryaquolls: severe- high water table and
saturated sett.
Histosols: severe- high water table and
organic materas.
Offroad vefiicle roads and trails:
Moran: severe- soil erosion, surface
compaction, and rutting.
Cryaquolls: severe- high water table and
saturated soil.
Histosols: severe- high water table and
organic materials.