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)
Cg2 -- 34 to 39 inches; light gray to gray (5Y6/1) and very dark gray (5Y6/1) rubbed moist very
gravelly coarse sandy loam and loamy coarse sand; massive; hard, firm, nonsticky,
nonplastic; common fine and medium roots; common fine interstitial pores; extremely acid
(pH 4.2); 35 percent pebbles; gradual smooth boundary.
Cg3 -- 39 to 40 inches; greenish gray (5GY 5/1)and greenish gray )5GY 5/1) rubbed moist very
gravelly sandy loam and loamy sand; massive; hard, firm, nonsticky, nonplastic; few fine and
medium roots; common fine interstitial pores; extremely acid (pH 4.3); 40 percent pebbles.
Eyre
A representative pedon of this soil occurs on a 75 percent west southwest facing back slope at
9,100 feet elevation located in the SW 1/4, SE 1/4, sec. 23 , T. 4 S., R. 82 W., in Eagle County,
Colorado supporting a aspen/Thurber fescue plant association.
Oi -- 1 to 0 inches; undecomposed grass litter; abrupt clear boundary.
Al -- 0 to 5 inches; gravelly loam, dark reddish brown (5YR 3/2) moist; weak fine subangular
blocky structure parting to weak fine granular; very friable, nonsticky, nonplastic; many very
fine and fine roots; many fine interstitial pores; 18 percent sandstone rock fragments; slightly
alkaline; clear smooth boundary.
A2 -- 5 to 12 inches; very gravelly loam, dark reddish brown (5YR 3/3) moist; weak fine
subangular blocky structure parting to weak fine granular; very friable, slightly sticky,
nonplastic; common very fine and many fine roots; many fine interstitial pores; 40 percent
sandstone rock fragments; neutral; clear wavy boundary.
Bw-- 12 to 17 inches; extremely cobbly fine sandy clay loam, red (2.5YR 4/6) moist; weak fine
and medium subangular blocky structure; very friable, slightly sticky, nonplastic; few very fine
and common fine roots; many very fine interstitial pores; 70 percent sandstone rock
fragments; neutral; abrupt smooth boundary.
R-- 17 inches; hard red sandstone
SOIL PROPERTIES AND QUALITIES
Cryoborolls
Landform:
Parent Material:
Effective rooting depth: greater than 60 inches.
Natural drainage class: well.
Depth to seasonal high water table: greater than 6 feet.
Available water capacity: moderate.
Permeability: moderate.
Runoff.• moderate.
Cryaquolls
Landform:
Parent Material:
Effective rooting depth: greater than 60 inches.
Natural drainage class: well.
Available water capacity: moderate.
Permeability: moderate.
Runoff.• moderate.
Borohemists
Effective rooting depth: greater than 40 inches.
Natural drainage class: excessively.
Exhibit I —Appendix A I-A-29 March 2024