PERMFILE61423

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 9/14/2005
• Section_Exhibit Name: Exhibit 16e 6 Main North Intake Shaft Soils Investigation
• Media Type: D
• Archive: No

Fish Creek Soil Investigation
APPENDIX 3
MENBAR SERIES
The Menbar series consists of very deep, somewhat poorly drained soils on floodplains. They
formed in mixed alluvium. Slopes aze 0 to 3 percent. The mean annual precipitation is ]2 to 16
inches and the mean annual temperatwe is 38 to 43 degrees F.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive Aquic Cumulic Haplocryolls
TYPICAL PEDON: Menbar clay loam, on a 2 percent slope -rangeland. (Colors are for dry
soil unless otherwise stated.
Al--0 to 2 inches; very dazk grayish brown (lOYR 3/2) clay loam, very dark brown (lOYR Z/2)
moist; moderate very fine granular structwe; sofr, friable, sticky and plastic; many very fine
roots; many very fine irregulaz pores; mildly alkaline (pH 7.6); cleaz smooth boundary. (1 to 3
inches thick)
A2--2 to 9 inches; very dark grayish brown (lOYR 3/2) clay loam, very dark brown (lOYR 2/2)
moist; weak very coarse prismatic structwe parting to moderate very fine subangulaz blocky;
hard, friable, very sticky and plastic; common very fine roots; common very fine irregulaz and
few very fine to medium tubular pores; slightly effervescent, carbonates disseminated; mildly
alkaline (pH 7.8); clear wavy boundary. (3 to 9 inches thick)
A3--9 to 20 inches; brown (lOYR 5/3) clay loam, dazk brown (IOYR 3/3) moist, few small
distinct dark yellowish brown (1 OYR 4/6) mottles and common small distinct white specks;
weak fine and very fine subangular blocky structwe; hard, friable, very sticky and plastic; few
very fine roots; few very fine irregulaz and few very fine and fine tubular pores; slightly
effervescent, carbonates disseminated; mildly alkaline (pH 7.8); abrupt wavy boundary. (8 to 20
inches thick)
C--20 to 60 inches; brown (1 OYR 5/3) and grayish brown (l OYR 5/2) stratified moderately thick
lenses of sandy loam, sandy clay loam and clay loam, dark brown (lOYR 4/3) and dark grayish
brown (l OYR 4/2) moist, common small faint dark yellowish brown (lOYR 4/6) mottles, ] to 2
inch thick black lenses in lower part; massive; slightly hard, friable, slightly sticky and slightly
plastic; mildly alkaline (pH 7.6).
TYPE LOCATION: Uinta County, Wyoming; 400 feet west of NE comer of Section 34, T13N,
R113W.
RANGE IN CHARACTERISTICS: The mollic epipedon ranges from 16 to 37 inches thick.
The mean annual soil temperatwe is 40 to 44 degrees F. and the mean summer soil temperatwe
is 52 to 57 degrees F. The organic matter content ranges from 2 to 5 percent in the A horizon and
decreases irregularly with depth. The 10 to 40 inch control section has stratified textwes of
sandy loam, loam, clay loam, silty clay loam, and sandy clay loam with an average clay content
__ of 18 to 35 percent. Rock fragment content of rounded gravel and cobble is typically less than 5
Habitat Management, Inc. A3-9 01/06/04