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

Northam San isabed erW Vyestcvn Pike Netionaf forests. Colorado
TYPICAL PROFILES:
Moran
Surface layer(s):
0 ro 2 inches -dark grayish brown, gravely
sandy loam.
2 ro 10 inches -brown, gravelly sandy bam.
Subsoil layer(s}:
10 to 20 inches - yeflowish brown, very graveity
sandy loam.
20 to 32 inches -light yellowish brown, very
cobbiy sandy loam.
Substratum layer(s):
32 ro 60 inches -light olive brown, very cobbty
sandy loam.
Cryaquolis
Surface covering layer.
4 ro 0 inches -dense mat of partly decomposed
vegetation.
Surface Layer(s):
0 to 12 inches -black, sift loam.
12 to 18 inches -black, very gravetty sift loam.
Substratum layer(s):
18 to 60 inches -dark greenish gray, very
gravely sandy foam.
Histosola
Surface layer(s):
0 ro 10 inches -slightly decomposed plant roots
and other organic material.
Subsurface layer(s):
10 to 24 inches -slightly decomposed plant
roots.
24 ro 35 inches - partially decomposed plant
roots.
Substratum layer(s~:
35 to 40 inches -dark grayish brown silty clay
loam.
40 to 45 inches -dark grayish brown sandy clay
foam.
45 inches -weathered gneiss and schist.
SOIL PROPERTIES AND QUALfTiES
Moran
Effecdrre rooting depth: greater than 60 inches.
Drainage class: somewhat excessively.
Depth to seasonal high water table: greater
than 6 feet.
AvaUablewatercapacity; low.
Permeability: moderately rapid.
Runoff: medium.
Cryaquolls
Effective rooting depth: greater than 60 inches.
Drainage class: very poorly ro somewhat poorly.
Depdt M seasonal high water table: +1 to 1
feet.
Available water capacity: low ro moderate.
Permeability: slow ro moderately slow.
Runoff: medium.
Histosols
Etfectlve rooting depth: greater than 40 inches.
Drainage class: poorly.
Depth to seasonal hdgh water table: +1 to 1
feet
Available water capacity: low.
Permeability: slow.
Runoff: slow.
VEGETATION
Potential natural communities:
Moran: kobresia/golden avens-curry sedge
(KomyJAcro-Caro) and tufted hairgrass/golden
avens (Dace/Acro) and (Saglt-Sabr1lDece)
moist site.
Cryaquolis: grayleaf willow-willowlsedges
(Sagl1-SALT/CARE) stream drainages and
water sedge/beaked sedge (CaaglGaut) seeps.
Histosois: water sedgelbeaked sedge
(CaagJCaut) seeps and Baltic rushlsedges
(Juar/CARE} bags.
Seral stages: dominated by plants of the
respective potential natural communities.
Present vegetation: dominated by plants of the
respective potential nalural communities.
USE AND MANAGEMENT CONSIDERATIONS
MaJor uses: recreation, scenic vistas, wildlife
habitat, and watershed.
Mass movement potential:
Landslides: tow.
Debris flows: low.
Snow avalanche: bw.
Sediment delltrery efticfency: high.
Road and trail Ilmitations:
Cut and fill slope s[ability
Moran; stighE_
Cryaquolis: sevem- high water table and
saturated soil.
Histosols: severe- high water table and
organic materials.
improved unsurfaced roads:
Moran: slight.
Cryaquoiis: severe- high water table and
saturated soil.
Histosols: severe- high water table and
organic materials.
Of/road vehicle roads artd trails:
Moran; severe- soil erosion, surface
compaction, and rutting.
Cryaquoiis: severe- high water table and
saturated soil.
Hlstosols: severe- high water table and
organic materials.