2024-05-17_REVISION - M1977493 ‎(3)‎

• Permit No: M1977493
• IBM Index Class Name: Revision
• Doc Date: 5/17/2024
• Doc Name: Exhibit I - Soil Information
• From: Climax
• To: DRMS
• Type & Sequence: TR37
• Email Name: TJ1
• Media Type: D
• Archive: No

Permit M-1977-493—Climax Mine Technical Revision 37 (TR-37)
Map Unit: 367B
Scout - Leadville families complex, 5 to 40 percent slopes.
Ecological Land Unit: 36713—subalpine fir and Engelmann spruce on montane and subalpine,
nearly level to moderately steep mountain slopes and benches.
MAP UNIT SETTINGS
Location: throughout the survey area, major extent.
General Landforms/Geomorphology: nearly level to moderately steep mountain slopes and
benches.
Parent material: residuum and slope wash.
Geologic symbol: Pm, PPm,TrPs.
Elevation range: 9,000 to 11,600 feet.
Aspect: all.
Climatic zone: montane and subalpine.
Mean annual precipitation: 20 to 40 inches.
Mean annual air temperature: 36°F. to 44°F.
Average annual snowfall: 200 to 400 inches.
COMPOSITION
50 percent Scout and similar soils.
40 percent Leadville and similar soils.
Contrasting inclusions
10 percent Hechtman family on residuum.
TYPICAL PROFILES:
Scout
A representative pedon of this soil occurs in map unit 367B supporting a seral lodgepole
pine/grouse whortleberry community on a moderately steep 30 percent northeast facing
backslope at 9,775 feet elevation located in the NE 1/4, NE 1/4, sec. 9, T. 6 S., R. 84 W., in Eagle
County, Colorado:
Oi -- 2.5 to 1.5 inches; undecomposed needle and twig litter.
Oe -- 1.5 to 0 inches; partially decomposed needle and twig litter.
A-- 0 to 7 inches; light brown (7.5YR 6/4) very cobbly loam, dark brown (7.5YR 3/4) crushed
moist; moderate medium subangular blocky structure; slightly hard, very friable, slightly
sticky, nonplastic; common medium and many very fine and fine roots; common fine
interstitial and common very fine tubular pores; 40 percent subangular sandstone rock
fragments; very strongly acid; clear smooth boundary.
E1 -- 7 to 19 inches; light reddish brown (5YR 6/4) extremely cobbly fine sandy loam, reddish
brown (5YR 5/4) crushed moist; weak fine subangular blocky structure; soft, very friable,
nonsticky, nonplastic; many very fine and fine and many medium and coarse roots; many fine
to coarse interstitial pores; 65 percent subangular sandstone rock fragments; strongly acid;
clear wavy boundary.
E2 -- 19 to 30 inches; yellowish red (5YR 5/6) extremely gravelly sandy loam, light reddish brown
(2.5YR 6/4) crushed moist; weak fine and medium subangular blocky structure; soft, very
friable, nonsticky, nonplastic; common fine and medium roots; common medium and coarse
and many fine tubular pores; 72 percent subangular sandstone rock fragments; strongly acid;
clear smooth boundary.
Exhibit I —Appendix A I-A-12 March 2024