2016-05-19_PERMIT FILE - C1982056 ‎(7)‎

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 5/19/2016
• Section_Exhibit Name: Exhibit 16c 18 Right Shaft and 9 East Borehole Soil Information
• Media Type: D
• Archive: No

Fish Creek Soil Investigation

APPENDIX 3
AABERG SERIES
The Aaberg series consists of moderately deep, moderately well drained or well drained soils
formed in fine textured sediments weathered from underlying clay shale. Aaberg soils aze on
upland hills and ridges. Slopes are 2 to 65 percent. The mean annual precipitation is about 10
inches and the mean annual temperature is about 37 degrees F.
TAXONOMIC CLASS: Fine, smectitic, frigid Leptic Udic Haplusterts
TYPICAL PEDON: Aaberg clay -grassland. (Colors aze for dry soil unless otherwise noted.)
A--O to 4 inches; grayish brown (2.SY 5/2) clay, very dazk grayish brown (2.SY 3/2) moist;
strong fine granular structure; soft, friable, sticky and plastic; mildly alkaline (pH 7.6); cleaz
smooth boundary. (3 to 6 inches thick)
Bw--4 to 23 inches; light olive brown (2.SY 5/3) clay, olive brown (2.SY 4/3)) moist; weak
medium prismatic structure parting to moderate medium angulaz blocks; slightly hazd, friable,
sticky and plastic; peds aze extremely hard; few thin glossy patches on faces of peds; cracks 1 to
2 cm. wide when dry; few slickensides; mildly alkaline (pH 7.6); gradual wavy boundary. (10 to
37 inches thick)
• BC--2 to 30 inches; light olive brown (2.SY 5/3) clay, olive brown (2.SY 4/3) moist; weak coazse
angulaz blocky structure; slightly hazd, friable, sticky and plastic; peds aze extremely hazd; few
slickensides; cracks 1 to 2 cm. wide when dry; strongly effervescent; moderately alkaline (pH
8.0); gradual wavy boundary. (0 to 10 inches thick)
TYPE LOCATION: Jackson County, Colorado; 1/4 mile east and 1/8 mile north of the south
1/4 corner of Sec. 35, T. 9 N., R. 78 W.
•
RANGE IN CHARACTERISTICS: Mean annual soil temperature is 39 degrees F., and mean
summer soil temperature ranges from 55 to 59 degrees F. Exchangeable sodium ranges from 0 to
15 percent in the control section. The solum is calcareous in some pedons. Depth to the pazalithic
contact ranges from 20 to 40 inches. The particle size control section is typically clay but
averages 35 to 60 percent clay, 15 to 45 percent silt, and 15 to 45 percent sand with more than 15
percent fine or coazser sand. Rock fragments range from 0 to 15 percent in the major part of the
control section and aze mainly 0 to 10 inches in diameter. In some pedons subhorizons redder
than 7.SYR occur, but a major part of the solum and C horizons above the bedrock has hue of
7.SYR or yellower. Mottling ranges from none to few faint mottles. These soils crack widely on
drying and have a high shrink-swell potential.
The A horizon has hue of SY through 7.SYR, value of 5 or 6 dry, and 3 or 4 moist, with chroma
of 2 through 4. It is neutral or mildly alkaline.
Habitat Management, Inc. A3-1 01/06/04