1988-04-29_PERMIT FILE - C1981008A ‎(53)‎

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 4/29/1988
• Doc Name: Soil Baseline Study Nucla East Study Area
• Section_Exhibit Name: Tab 9 Attachment 9-5
• Media Type: D
• Archive: Yes

APPENDIX 9-5-3 (Cont.)
Soil Profile Descriptions for all Sampled Pedons
Soil Series, Horizon
Map Unit (MU) and 5 Additional
and Sample Depth 1 2 3 3 4 Consistence 6 Coarse 7 8 9 Features
Number (SN) Inches Texture Color Dry Color Moist Structure Dry Moist Wet Roots Fragments Reaction Boundary and Comments
Barx, scalped MU:D70B, SN:72 Fine-loamy, mixed, mesic Disturbed Land
Apk 0-8 SCL 5YR 5/4 Massive FR S/P Com F, VF, & EV, Mild Alk CS Calcic
Few M, CO (pH 7.6) horizon
Bk1 8-22 L 5YR 5/4 Massive FR S/P Few CO, M, F, 5% EV, Mild Alk AS Calcic
5YR 6/3 VF (pH 7.6) horizon
Bk2 22-32 SCL IOYR 4/2 Massive VFR S/SP Few M, F, VF EV, Mild Alk AS Calcic
(pH 7.8) horizon
Cl. 32-40 SL IOYR 5/4 Massive VFR SS/Sp Few M, F ES-EM, Mild Alk CS
10YR 4/2 (pH 7.7)
C2 40-51 L 7.5YR 5/3 Massive FR S/P Few M, F EV, Mild Alk AW
(pH 7.8)
i
�n C3 51-59 SL 10YR 5/4 Massive VFR SS/NP EM, Mild Alk AW
N (pH 7.7)
C4 59-72+ SL 10YR 5/4 Massive VFR SS/Sp EM, Mild Alk
(pH 7.6)
an e o aracteristics: Barx scalped profiles were described at 2 locations within the study area (profile description numbers 56 anBarx urie
profiles were described at 3 locations within the study area (profile description numbers 54, 55, and 57). Prior to 1976, these culturally disturbed soil
types would likely have been classified as either Barx or Progresso. Soil Conservation land leveling activities were utilized within this map unit in 1976 to
improve and expand the effective flood irrigation area by reducing the elevation difference between ridge (small knobs) and swale (drainage) landscape
positions. The Barx buried soil occurs on former swale or drainage landscapes and has fill material and buried soil features. The Barx scalped soil occurs
on former ridge landscapes and has features similar to a "scalped" Barx profile. Depth to bedrock is greater than 40 inches, and averages more than 67 inches
within the single D70B map unit. The profiles have 0 to 15 percent rock fragments. The Barx buried surface fill material has variable physical and chemical
properties due to an origin from mixed A, Bt, and Bk horizons. Fill material thickness ranges from 6 to 32 inches. The surface Ap/Apk horizon is typically a
tilled, organic matter enriched surface/subsoil mixture with textures ranging from sandy loam to sandy clay loam. The surface/subsoil horizons (0 to 32
inches) are neutral to moderately alkaline, moderately to strongly calcareous, and have calcium carbonate equivalents ranging from 10 to 17 percent. The
buried calcic horizon is at a depth ranging from 20 to 63 inches. Buried horizon colors and textures are similar to the surface, subsoil, and substratum
ranges listed for Barx map unit 70B. The Barx scalped surface Apk horizon is typically a tilled, organic matter enriched subsoil calcic horizon. The Bk
CD
calcic horizon is at a depth ranging from 66 to 32 inches. The surface/subsoil horizons (0 to 32 inches) are mildly to moderately alkaline and are moderately
N to strongly calcareous. Calcium carbonate equivalent in the shallow calcic horizon is 11 to 17 percent. Horizon colors and textures are similar to the
CD subsoil and substratum ranges listed for Barx map unit 70B. Profile description sites 54, 55, 56, 57, and 72 are all located in adjacent irrigated hayfields.
0
.o
C
CO