PERMFILE68700

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 7/30/2007
• Doc Name: Taxonomic Unit Descriptions
• Section_Exhibit Name: Section 2.04.9 Attachment 2.04.9-3
• Media Type: D
• Archive: Yes

WAHWEAP SERIES
LOCATION WAHWEAP AZ
Established Series
Rev. WJ/RCH/PDC
06/97
The Wahweap series consists of shallow, somewhat excessively drained soils formed in eolian sands and
sandstone alluvium on rolling plateaus. Slopes are 0 to 16 percent. Mean annual precipitation is about 7 inches and
the mean annual air temperature is about 56 degrees F.
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic, shallow Typic Haplocalcids
TYPICAL PEDON: Wahweap fine sand -rangeland. (Colors are for dry soil unless otherwise noted.)
A-0 to 1 inch; yellowish red (5YR 5/8) fine sand, yellowish red (5YR 4/6) moist; massive; slightly hard, very friable;
manyveryfine roots; many veryfine interstitial pores; 5 percent gravel; moderately alkaline (pH 8.0); abrupt smooth
boundary. (1 to 3 inches thick)
Bk1-1 to 12 indtes; yelowish red (5YR 5I8) gravelly loamy fine sand, yellowish red (5YR 4!6) moist: massive;
• slightly hard, very friable; common very fine roots; common very fine tubular pores; 30 percent gravel with thicker
lime coatings on the bottom than on the top; slightly effervescent, 10 percent caldum carbonate equivalent;
moderately alkaline (pH 8.2); dear wavy boundary. (6 to 11 inches thick)
Bk2-12 to 19 inches; yellowish red (5YR 5/6) extremely gravelly fine sandy loam, yellowish red (5YR 5/6) moist;
moderate fine subangular blocky strudure; slightly hard, very friable; common very fine roots; common very fine
tubular pores; 60 percent gravel with thicker lime coatings on the bottom than on the top; violently effervescent, l0
percent gldum carbonate equivalenh moderately alkaline (pH 8.2); dear wavy boundary. (5 to 9 inches thick)
2Cr-19 inches; pinkish whfte (5YR 8Y2) partially weathered sandstone; lime coatings in joints.
TYPE LOCATION: Coconino County, Arizona; about 7 miles northwest of Page; 1200 feet north and 500 feet east
of the southwest comer of sedion 7, T. 41 N., R.8 E.
RANGE IN CHARACTERISTICS:
Soil moisture -Intermittently moist in some part of the soil moisture control section during July-September and
December-February. Driest during May and June. Typic aridic soil moisture regime.
Soil temperature - 57 to 59 degrees F.
Rock fragments - 35 to 60 percent gravel in the control section
• Organic matter content -Less than 1 percent
(Revised March 2006) Attachment 2.04.9-3-37